Rolls-Royce Archives
| Identifier | Entry | ||
| 03-page001 | Scheme for carburettor mixture control and related ignition control revisions. | ||
| View original record | To BY. FROM E. C. to BY. RS. x7080 E2/M6.7.26. EAC.7. CARBURETTER MIXTURE CONTROL. - X.7240. X8685 We send you herewith drawing LeC. 2266. giving a scheme for the mixture control to suit LeC.2262. The… | ||
| 03-page002 | On the successful road and bed testing of new carburetter jets, designed to reduce manufacturing scrap. | ||
| View original record | To BY. from Hs/GWH. X7080 Hs/GWH1/LG31.3.27. CARBURETTER JETS - E.75287/8. 12-EX. These jets were fitted to the carburetter on the road test does not give any detrimental results; good slow running… | ||
| 03-page003 | Experimental induction pipe manifold arrangements for the revised Phantom engine. | ||
| View original record | Hs. from E. c. to BJ. BY. X7330. X7070 E3/M7.6.27. X.8330 x X7070 X.7330 x 8070 INDUCTION PIPES FOR REVISED PHANTOM. In connection with the work on the revised aluminium Phantom, R. would like you to… | ||
| 03-page004 | Hand-drawn diagram illustrating two alternative connection schemes for a component. | ||
| View original record | SCHEME 1 SCHEME 2 EACH SCHEME WITH & WITHOUT CENTRAL CONNECTION SHOWN DOTTED | ||
| 03-page005 | Engine detonation using french petrol, pre-ignition and misfires. | ||
| View original record | Hs. E. from R. c. to B.J. Wor. +7080 R4/M29.12.27. EAC.7 - ALUM: ENGINE, TURBULENT HIGH COMP: 5/1, RUBBER SUSPENSION. X.7770 X.7005 X.7080 So far good, but with french petrol it detonates at slow… | ||
| 03-page006 | Design and fitment of a Weir induction pipe for models EAC.14 and EAC.10. | ||
| View original record | hs. from E. c. to BJ. X7080 E2/M/3.1.28. EAC.14 WEIR INDUCTION PIPE. X.7070 X.3579 X.8070 X.7080 The Weir induction pipe was not made for EAC.14., but as a model of EAC.10., and was regarded rather as… | ||
| 03-page007 | Proposed alterations and improvements to the EAC.7 model, including radiator design, engine suspension, and body mounting. | ||
| View original record | Hs. E. DA. from R. 47070 R2/M9.1.28. c. to BJ. LHS. RG. c. to PN. Wor. BY. c. to C. SG. CWB. X.7770 X.7530 EAC.10. X.7830 X.7410 X.7250 X.7070 I am so pleased with EAC.7. that in making the above we… | ||
| 03-page008 | Technical memorandum discussing vehicle improvements related to throttle, suspension, carburettor, brakes, and bodywork. | ||
| View original record | contd :- -2- In the EAC.10 we ought to make a desperate attempt to return to water cooling of the throttle, even if it requires my small superheater of the water on the exhaust pipe - i.e. (steam… | ||
| 03-page009 | Weir induction pipe and petrol head considerations for chassis EAC.14 and EAC.10. | ||
| View original record | Ans. from E. c. to BJ. X7070 E2/M13.1.28. EAC.14 WEIR INDUCTION PIPE. X.7070 X.3579 X.8070 X.7080 The weir induction pipe was not made for EAC.14., but as a model of EAC.10., and was regarded rather… | ||
| 03-page010 | The design of induction pipes and cylinder heads, discussing siamesed ports and comparing 4-port and 6-port arrangements. | ||
| View original record | R. from E. c. to BJ. Hs. 47070 E4/M17.1.28. EAC.10 INDUCTION PIPE AND CYLINDER HEAD. X.7070 X.7050 X.4214 ----------------- When In Derby recently we had a discussion with Mr. Lovesey on the above and… | ||
| 03-page011 | Page discussing the application of an undertype slot for induction pipes, referencing a blueprint. | ||
| View original record | contd :- -2- The question of using the undertype slot applies of course to either 4 or 6 port induction pipes. Blueprint LeC. 2509 herewith. E. | ||
| 03-page012 | Design of weir vs. slot type induction pipes for the EAC.14 engine. | ||
| View original record | R. from E. c. to B.J. Hs. BY. 47070 E2/M7.1.28. EAC.14 - INDUCTION PIPE. X.7070 X.8070 The weir or slot type induction pipe at present being tested on an EAC.14. engine was designed as a test model of… | ||
| 03-page013 | Alternative underfed slotted induction pipe for EAC.14 and testing considerations. | ||
| View original record | E. Hs. from R. BY. c. to BJ. Wor. RG. Da. +7070 R2/M21.1.28. SPORTS, (EARLY - NOT SUPER). X.8070 X.8080 I agree that an alternative slotted induction pipe for EAC.14 should be made as E. suggests -… | ||
| 03-page014 | Relocation of the Autovac position. | ||
| View original record | E. Hs. from R. BY. c. to BJ. Wor. RG. X7080 R7/M21.1.28. EAC.10 AUTOVAC POSITION. X.7510 X.3579 X.7080 I fear we must move this to the higher position suggested by E., but one does not like to place… | ||
| 03-page015 | Committing to a 6-port induction scheme over a 4-port arrangement. | ||
| View original record | X. 7070 E. Hs. from R. BY. c. to BJ. Wor. RG. R6/M21.1.28. EAC.10 INDUCTION PORTS. Further to my memo. of this morning I do not think we shall ever require the 4 port arrangement, so that the bolts… | ||
| 03-page016 | Plans for a visit from a Mr. Elliott and the development of a sports Phantom carburettor and slot induction pipe. | ||
| View original record | BY E. Hs. from. R. c. to E.J. Wor. Ds. 47070 RL/M6.2.28. X.8940b X.7080 X.7230 X.7070 STANDARD PHANTOM - NEXT 10,000 MILES. ------------------------------------------ This is expected to be ready by… | ||
| 03-page017 | The Standard Phantom's next 10,000-mile test, involving personnel arrangements and development of a sports carburetor and induction pipe. | ||
| View original record | BY E. H. from. R. c. to BJ. Wor. Da. X7080 R1/146.2.28. X.8940S X.7080 X.7230 X.7070 STANDARD PHANTOM - NEXT 10,000 MILES. This is expected to be ready by ................. Supposing Mr. Elliott can… | ||
| 03-page018 | Experimental results and requesting drawings for a modified Weir type induction manifold for the Phantom engine. | ||
| View original record | X7070 To BY/SS. from Hs/ACL. Hs/ACL1/LG10. 2. 28. WEIR TYPE INDUCTION MANIFOLD FOR PHANTOM. X7070 In course of our experiments we found that the one piece weir manifold E.76461 gave better results… | ||
| 03-page019 | Blueprint for an induction pipe and modifications to fit a Phantom carburettor. | ||
| View original record | R. from E. c. to BJ. Hs. BY. 47070 E1/MO.3.28. EAC.10 INDUCTION PIPE. X.7070 X.7080 We send you herewith a blueprint of LeC.2526., dealing with the above. This design is not complete but shews… | ||
| 03-page020 | Drawing for an inlet pipe and carburettor adaptation for the EAC.10 cylinder head. | ||
| View original record | BY. from E. c. to EY. Hs. 47080 E1/M24. 3. 28. EAC.10 CYL: HEAD. X.7050 X.7080 We send you herewith drg. LeC. 2526, shewing a drg. of an inlet pipe to suit the present type of carb. for EAC.10 The… | ||
| 03-page021 | Modification to an induction pipe and a query regarding the standard carburetter scheme. | ||
| View original record | R. from E. c. to BJ. Hs. BY. 4708 o. E4/M24.3.28. EAC. 10 CYL: HEAD. X.7050 X.7070 X.7080 Since sending you a blueprint of LeC.2528 - Induction Pipe - we have made a modification as shewn on the… | ||
| 03-page022 | Blueprint LeC.2527, approving modifications to a carburettor and induction bend water jacket. | ||
| View original record | E. Hs. BY. from R. c. to BJ. Wor. X7080 R3/M27.3.28. SS. CARBURETTER & INDUCTION. X.7080 X.7070 Blueprint LeC.2527 - I have just filed this, and think the modifications to the carb. and induction bend… | ||
| 03-page023 | Tests conducted on weir and slotted type Phantom induction pipes. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to E. DA. c. to BY. X7070 Hs/ACL1/LG21.4.28. PHANTOM INDUCTION PIPES. +8070 for sketch We have carried out a number of tests on the weir and slotted type of… | ||
| 03-page024 | Experiments with induction pipe and nozzle designs to improve engine performance. | ||
| View original record | contd :- -2- distributing pipe to make room for the carburetter flange - see sketch - and this was found to have a beneficial effect on the distribution. (2) The slot of the one piece pipe was longer… | ||
| 03-page025 | Report comparing the performance of weir, standard, and slotted induction pipes, with conclusions on future development. | ||
| View original record | contd :- -3- Appended are curves shewing the power output with the weir, standard and slotted pipes. It will be seen that the induction pipe depression with the slotted pipe is high, indicating… | ||
| 03-page026 | Requesting modifications and tests on Phantom induction pipes. | ||
| View original record | Hs. from E. c. to BJ. BY. +7070. E1/M26.4.28. PHANTOM INDUCTION PIPES. X. 8070 X. 7070 In accordance with R's recent memo. would you please have the induction pipe xx uptake shewn on LeC. 2511… | ||
| 03-page027 | Modifications to the wheelcase, throttle governor, and induction pipe for the EAC.10 engine. | ||
| View original record | BY. from E. c, to B.J. Hs. 47080 E1/M4. 5. 28. EAC.10 WHEELCASE & THROTTLE GOVERNOR. X. 7140 X. 7170 X. 7080 X. 7070 We send herewith Lec. 2556 shewing the throttle governor control, and giving… | ||
| 03-page028 | Standardisation of chassis parts for an aluminium inlet pipe. | ||
| View original record | RR 755 REVISED (10M) (D.C. 777 - 20 - 2 - 28) M.C.L.TD. +7070 COMPLETED 10.5.28 STANDARDISATION of CHASSIS PARTS. Date 26.3.28 Description of Parts. ALUMINIUM INLET PIPE. L.O.P. No. E.76692 Origin.… | ||
| 03-page029 | Standardisation document for chassis parts concerning an aluminium inlet pipe modification. | ||
| View original record | STANDARDISATION of CHASSIS PARTS ALUMINIUM INLET PIPE (1) The number of the first chassis on which the new part will be fitted. F.2.B series. (2) Date when the chassis will be handed to test. 9.6.28… | ||
| 03-page030 | Proposed modifications to a Phantom Weir type slotted induction pipe. | ||
| View original record | EXXXXXXX BY. HS. from E. c. to BJ. X7070 E2/M12.5.28. PHANTOM WEIR TYPE SLOTTED X.7070 X.7080 INDUCTION PIPE. Regarding the above job we have the design in hand, and hope to send it to Derby next… | ||
| 03-page031 | Proposal for a modification to the induction system for the F.2B series, outlining the issues with the current design and the benefits of a new one. | ||
| View original record | WOR. X7070 No. BY/G.18.5.28. RE MODIFICATION TO INDUCTION SYSTEM WHICH IS BEING PRESSED BY R. AS ESSENTIAL FOR F.2B SERIES. On the 15th inst. we received a wire from R. reading as follows :- "First… | ||
| 03-page032 | Page 2 of a memorandum listing parts affected by a proposed change, specifically induction and exhaust components. | ||
| View original record | - 2 - BY7/G.15.5.28. quoted above, and providing we could get the new parts on a car in three weeks we could manage for that length of time not to have either to stop production or fit any further… | ||
| 03-page033 | List of replaced parts for the Phantom - Weir type induction pipes. | ||
| View original record | PHANTOM - WEIR TYPE INDUCTION PIPES. --------------------------------- PARTS REPLACED. E.76881 Induction Pipe (Casting). E.77124 Jacketed Bend. " E.70629 Cover. " E.77335 Front Down pipe. E.72871 "… | ||
| 03-page034 | Lec.2560 design for throttle governor control and modifications to the induction pipe. | ||
| View original record | BY. from E/CLJ. c. to BJ. Hs. 47070 E/CLJ1/M19.5.28. EAC.10 THROTTLE GOVERNOR CONTROL. X.7140 X.7070 the above. We send you herewith Lec.2560 design for We are making modifications to the induction… | ||
| 03-page035 | Design of Phantom induction pipes and tappet clearance issues with aluminium cylinder heads. | ||
| View original record | BJ. from Hs. c. to Wor. BY. c. to C. SG. c. to PN. CWB. X7071 Hs4/LG30.5.28. PHANTOM INDUCTION PIPES. X7070 X7050 V8070 We visited WW. on Friday last to discuss with R. the difficulties which might… | ||
| 03-page036 | The design of a suitable induction pipe to enable engine running, referencing drawing Lec.2562. | ||
| View original record | BY. from E. c. to BJ. Wor. Hs. E1/M6.6.28. EAC.10 INDUCTION PIPE. X.7070 X.7080 We send herewith Lec.2562 shewing an induction pipe suitable, as far as we can make out in the absence of actual… | ||
| 03-page037 | Further tests comparing exhaust and water-heated induction pipes for the Phantom model. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. x7070 Hs/ACL1/LG9.6.28. PHANTOM INDUCTION PIPE HEATING. x8070 We have made further tests with the exhaust and water heated induction pipes on the… | ||
| 03-page038 | Comparison of engine warm-up performance between a standard exhaust heating system and a water-based system. | ||
| View original record | contd :- -2- By this method we made a comparison of the heating up with the present standard exhaust heating system with the butterfly in the down pipe and the water system in which all the jacket… | ||
| 03-page039 | Graph comparing the temperature rise of a hot spot on an F.2.B. Series Phantom engine using exhaust versus water heating. | ||
| View original record | COMPARISON OF THE TEMP RISE OF HOT SPOT ON F.2.B. SERIES PHANTOM WITH EXHAUST & WATER HEAT. Y-AXIS: TEMP OF HOT SPOT °C X-AXIS: TIME IN MINS AFTER ENGINE STARTS ENGINE STARTED UP FROM COLD & RUN LIGHT… | ||
| 03-page040 | Diagram illustrating the setup for Phantom hot spot tests. | ||
| View original record | DIAGRAM OF PHANTOM HOT SPOT TESTS STEAM VENT PIPE CONNECTING WATER OUTLET TO INLET UNION OF HOT SPOT JACKET THERMOMETER IN OIL IN INDUCTION PASSAGE OF HOT SPOT SEPARATE HOT SPOT WITH INDUCTION PASSAGE… | ||
| 03-page041 | Induction pipe heating tests for the Phantom, comparing four different systems. | ||
| View original record | X7070 To R: from Hs/ACL. c. to BJ. Wor. c. to H. DA. c. to BY. Hs/ACL1/LG14.6.28. PHANTOM INDUCTION PIPE HEATING. X8070 Further induction pipe heating tests have been carried out on the Phantom and we… | ||
| 03-page042 | Comparison of water-heated versus exhaust-heated induction systems and the benefits of a 'hot spot' for fuel evaporation. | ||
| View original record | contd :- -2- without the butterfly choke valve in the down pipe. The curves of the two water heated systems fall far below the exhaust heated and as the actual difference between the exhaust heating… | ||
| 03-page043 | Induction systems, carburettors, and 'hot-spot' heating for six-cylinder engines. | ||
| View original record | contd :- -3- It would appear that the best position to 'hot-spot' an induction system supplying six cylinders from a vertical carburetter would be round the 'Tee' junction of the uptake and horizontal… | ||
| 03-page044 | Graph comparing the temperature rise of a hot spot on an F-2-B Series Phantom engine with different exhaust and water heat configurations. | ||
| View original record | COMPARISON OF THE TEMP. RISE OF HOT SPOT ON F-2-B SERIES PHANTOM WITH EXHAUST & WATER HEAT. Y-AXIS: TEMP. OF OIL IN HOT-SPOT °C X-AXIS: TIME IN MINS AFTER ENGINE STARTS. DATA SERIES & ANNOTATIONS:… | ||
| 03-page045 | Drawings for a new experimental carburetter for the Phantom engine. | ||
| View original record | Hs. BY. from R. c. to BJ. Wor. X7080 R3/M20.6.28. PHANTOM CARBURETTER. X.7080 X.8080 This week we are sending you the drgs. of a new experimental carburetter for the Phantom engine. We shall be… | ||
| 03-page046 | Proposing a novel, patentable scheme for induction pipe heating using an independent pipe and valve. | ||
| View original record | Hs. EY. from R. c. to BJ. Wor. C. to RC. NA. C. to Mr. Claremont. +7080. R3/M21.6.28. CARS - INDUCTION PIPE HEATING. X.7070 X.5070 X.7080 Apparently from Hs' reports and our own impressions we must… | ||
| 03-page047 | Contingency plan for carburetter and induction pipe design for the Phantom and other models. | ||
| View original record | Hs. from R. c. to BJ. c. to Wor. c. to BY. X7080 R2/M21.6.28. CARBURETTERS & INDUCTION PIPES. X.7080 X.5080 X.7070 X.5070 Should the new RR. vertical expanding carburetter be a long time in… | ||
| 03-page048 | Specifications for an expanding throat carburettor and associated components. | ||
| View original record | BY. from E. c. to BJ. Hs. X7080 E1/M23.6.28. RR EXPANDING THROAT CARB: EAC.10. X.7080 X.7070 We send herewith Lec.2564 shewing the above. Induction Pipe Lec.2562 should be used for this carb., the… | ||
| 03-page049 | Alterations to induction pipes, comparing an exhaust heated jacket with a water heated scheme. | ||
| View original record | BY. from E. c. to BJ. Hs. /7070 E2/12.9.28. EAC.10. INDUCTION PIPES. X.7230 X.7070 X.8050 We send you herewith drgs. LeCs. 2591/2 dealing with the above. The former shews the alterations required to… | ||
| 03-page050 | Test report on the 'SS' engine, focusing on induction pipe distribution and camshaft timing. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to E. DA. c. to BY. X7070 Hs/ACL1/LG20.9.28. 'SS' ENGINE. X.7090 X.7070 X.1462 X.7771 Engine No.SS-3. Running conditions. Claudel Hobson Carburetter (Eagle 1X).… | ||
| 03-page051 | Report comparing camshaft power curves, noting vacuum pump lubrication issues and suggesting tappet adjustment improvements. | ||
| View original record | contd :- -2- at the lower speeds. see V.423 for full comparison. It should be noted that the power curve of the 110° camshaft was taken with the nozzle E.77799 fitted in the induction pipe, whereas… | ||
| 03-page052 | Expressing concern that the 'SS' engine development has been neglected due to the focus on aero engine work. | ||
| View original record | Hs. from R. c. to BJ. Wor. BY. X7080 R3/M17.10.28. 'SS' ENGINE. 7080 7070 K.7771 Regarding 'SS' engine, apparently owing to the importance of the aero engine work, we fear that the development of the… | ||
| 03-page053 | Engine compression experiments and improvements for the EAC.10 (SS) engine. | ||
| View original record | x7080 E. Hs. from R. BY. c. to BJ. Wor. R1/M17.10.28. EAC.10. (SS) RE. COMPRESSION. X.790 X.7080 X.7005 X.7771 In our experiments we should use the highest compression that the engine will bear… | ||
| 03-page054 | Preliminary tests of an expanding throat carburetter on an 'SS' engine. | ||
| View original record | To R: from Hs/ACL. c: to BJ. Wor. c. to E. DA. c. to EY. 47080 Hs/ACL1/LGS.11.28. RR. EXPANDING THROAT CARBURETTER. We have carried out some preliminary tests with the RR. expanding throat carburetter… | ||
| 03-page055 | Analysis of engine performance related to carburettor choke area, restrictors, and induction depression. | ||
| View original record | contd :- -2- a free choke area of 1.53 sq.ins. gave low induction pipe depression and consequently good power, with the maximum of suction at the choke. The minimum free area through the expanding… | ||
| 03-page056 | Technical memorandum discussing carburettor performance, development, and selection for 'SS' engines. | ||
| View original record | contd :- -3- of various sizes starting with one which will allow 1.53 sq.ins. in its fully withdrawn position and select a piston spring which will allow the restrictor to become fully withdrawn at… | ||
| 03-page057 | Performance comparison graph for an Expanding Throat Carburettor on Engine SS-3. | ||
| View original record | EXPANDING THROAT CARBURETTOR. ENGINE No SS-3. COMP. RATIO 4.5 HOT SPOT IN ACTION TEST BED EXHAUST SYSTEM. BRAKE HORSE POWER: EXPANDING THROAT CARR. STD. PHANTOM CARR. CLAUDEL HOBSON. INDUCTION… | ||
| 03-page058 | Performance and potential improvements for the 'SS' Carburetter. | ||
| View original record | Hs. from R. X.7080 R2/MO.11.28. c. to BJ. Wor. c. to BY. SG. 'SS' CARBURETTER. I am very pleased with the first run on the RR. single expanding carburetter: quite as good as one could expect. I have… | ||
| 03-page059 | 'SS' induction pipe hot spot and comparing exhaust versus water heating systems. | ||
| View original record | By: from Hs. C. to Wor. X7080 Hs4/LGL2.11.28. 'SS' INDUCTION PIPE HOT SPOT. X7070 It is agreed to use the Phantom type carburetter with overhead weir type induction system on the first SS. engines and… | ||
| 03-page060 | List of suggested alterations for the 'SS' carburetter. | ||
| View original record | Hs. from E. c. to BJ. BY. X.7080 E1/M15.11.28. 'SS' CARBURETTER. With further reference to R2/M10.11.28., the alter-ations suggested by R. enumerated are as follow : (1) Turn .1 off the top of the air… | ||
| 03-page061 | Mixture distribution for the SS and G4 induction pipes and a proposal for steam heating the jacket. | ||
| View original record | Hs. from R. c. to Wor. BY. E. X7070 R5/M1.12.28. SS. and G4. INDUCTION PIPE. X.7070 X.5070 In examining the distribution we cannot help thinking that there is sure to be a difference with different… | ||
| 03-page062 | Carburation practices for both aero and car engines, covering suction, cold starts, and heating. | ||
| View original record | HS. E. RG. From R. c. to BJ. Wor. c. to SG. BY. F. 47080 R1/M6.1.29. CARBURATION - AERO & CAR. X.3933 X.7080 X.4434 (1) It is possible that to give satisfactory results we must have fairly vigorous… | ||
| 03-page063 | The performance improvements of the 'SS' chassis engine, detailing increased power and better cold-start behaviour. | ||
| View original record | HS. E. DA. RG. FROM R. BY. x7070 R2/M16.1.29. c. to BJ. Wor. Sg. c. to PN. CWB. C. 'SS' CHASSIS ENGINE. X.7771 X.7770 X.7070 This is undoubtedly distinctly more powerful, and our acceleration, hill… | ||
| 03-page064 | Recommendation to design and fit a thermostat to the 'SS' engine. | ||
| View original record | To R. from Hs. c. to BJ. Sg. c. to Wor. E. c. to DA. BY. V7070 Hs7/LG21.1.29. 'SS' ENGINE. We recommend that a design is got out enabling a thermostat to be fitted to the SS. It would be nice to have… | ||
| 03-page065 | Improved screw head for 'SS' carburetter mixture adjustment, specifically for India chassis. | ||
| View original record | X. 7080 BY. from E. c. to BJ. Hs. E2/M21.1.29. 'SS' CARBURETTERS. MIXTURE ADJUSTMENT. We send herewith drg. LeC. 2642 dealing with the above, and shewing an improved screw head for tightening the… | ||
| 03-page066 | Potential improvements to the Phantom carburettor using a diffuser type jet. | ||
| View original record | To R. from Hs/ACL. c. to BJ. SE. c. to Wcr. E. c. to DA. BY. PHANTOM CARBURETTER. It has occurred to us that we might effect an improvement in the acceleration, distribution and a slight gain in power… | ||
| 03-page067 | Carburettor development, comparing a diffuser type jet with a plain jet, and the progress of the SS expanding carburettor. | ||
| View original record | contd :- -2- The first row of air holes in the diffuser could be placed under the petrol level so as to give an early 'pick up' and a suitable capacity accelerating well incorporate The mixture… | ||
| 03-page068 | Review of induction system heating and distribution, comparing past Phantom engine tests with the S.S. engine. | ||
| View original record | To R. from Hs/ACL. c. BJ. SG. E. c. Wor. Da. BY. X7090 Hs/ACL/T21.1.29. S.S.INDUCTION SYSTEM HEATING AND DISTRIBUTION. While reviewing the question of induction system heating for the S.S. engine it… | ||
| 03-page069 | Report comparing induction and heating systems, including water and superheated steam, for the Phantom engine. | ||
| View original record | Hs/ACL1/T21.1.29. -2- Contd. Up to the time that the turbulent head Phantom went on to production we were unable to make any appreciable improvement to the cold distribution of the induction system… | ||
| 03-page070 | Analysis of heat transference in exhaust and induction systems and its effect on engine operation. | ||
| View original record | Hs/ACL1/T21.1.29 -3- Contd. velocity is only very low in the full bore exhaust pipe and no doubt would be practically nil round the circumference of the pipe forming an insulating skin. This combined… | ||
| 03-page071 | Engine performance issues related to induction system and carburetter heat on the Phantom model. | ||
| View original record | Hs/ACL1/T21.1.29. -4- Contd. On the Phantom with the induction system, carburetter and autovac arranged with such proximity to the exhaust system, the whole system becomes very hot under normal… | ||
| 03-page072 | Engine induction and exhaust heating systems, with a diagram of twin exhaust ports. | ||
| View original record | -5- Contd. are subject to less variation in temp. from cold to normal working conditions which results in less variation in the mixture strength. The six port induction system with the overhead slot… | ||
| 03-page073 | Description and test results of a 'Solex' carburetter system, including a diagram of its 'hot spot' manifold. | ||
| View original record | -6- Contd. A system recommended by the "Solex" carburetter Co. and used in conjunction with a twin Solex carburetter which we tested on the Phantom, proved to be very efficient and simple. (See… | ||
| 03-page074 | Methods for accelerating engine warm-up using thermostatic water control and radiator shutters. | ||
| View original record | -7- Contd. provides good distribution, it would appear to be our immediate problem to find the best means of quickly reaching the normal water temperature. It has been suggested that this could be… | ||
| 03-page075 | Proposal and diagram for an experimental induction system to prevent engine detonation. | ||
| View original record | -8- Contd. This would in some ways appear preferable to the present Phantom hot spot system in which the mixture in the induction pipe receives the most heat when the engine is idling or running at… | ||
| 03-page076 | Proposed scheme with an improved manifolding design offering advantages over the Phantom model. | ||
| View original record | -9- Contd. At this stage, where an efficient system is required quickly, it would appear that a scheme something on the above lines would be the quickest solution - subject of course to test - and due… | ||
| 03-page077 | Further tests of the 'SS' expanding carburetter on a Phantom engine. | ||
| View original record | To R. from Hs/ACL. c. to BJ. SG. c. to Wor. E. c. to BA. BY. X7080 Hs/ACL2/LG28.1.29. 'SS' EXPANDING CARBURETTER. X7080 We have had the opportunity of carrying out some more tests on the expanding SS.… | ||
| 03-page078 | Technical report on carburetor and induction pipe depression tests. | ||
| View original record | contd : -2- induction pipe is 2.1" Hg. We aim at getting a depression of not more than 2" Hg. at 2500 r.p.m. which is the figure given by the RRCH. carb. for a choke area of 1.532 sq.ins. or 10.4%… | ||
| 03-page079 | Technical memo page discussing alternative designs for a restrictor and float chamber. | ||
| View original record | contd :- -3- We shall then have a restrictor giving the same choke space but offering less restriction to air flow in the intake. As an alternative we could cut away the float chamber walls and feed… | ||
| 03-page080 | Graph showing induction depressions on an S.S. carburettor related to the area past the choke. | ||
| View original record | INDUCTION DEPRESSIONS ON S.S. CARBURETTOR. CARBURETTOR TO L.E.C. 2564 V548 28-1-29 Y-Axis: DEPRESSION (INCHES OF MERCURY) X-Axis: AREA PAST CHOKE (RESTRICTOR) IN SQ. INS. Graph line (top): DEPN AT… | ||
| 03-page081 | Proposal for an air pump silencer to be connected to the carburetter air inlet. | ||
| View original record | R. from E. c. to BJ. Hs. c. to BY. X. 7080 SS. Air Pump Silencer. Blueprint Lec.2659 herewith shews a proposed silencer for air pump connection on carburetter air inlet. We have endeavoured to make… | ||
| 03-page082 | Carburettor design, comparing an old model with new ideas for improvement. | ||
| View original record | Hs. from R. E. c. to Sg. Wor. +7080 34/R.2.29. S.S. & G4. R.C. CARBURATION. X.7080 X.5080 19-EX has made me think that our old RR. carb. is better than I gave it credit for. At sudden full throttle it… | ||
| 03-page083 | Abandoning exhaust heating for water heating on the S.S. and G.4. induction system. | ||
| View original record | Hs. E. FROM R. DA. BY. c. to Sg. Wor. c. to PN. CWB. X7070 R3/11.2.29. S.S. AND G.4. X.7070 INDUCTION SYSTEM. X.5070 X.7230 I have read carefully Mr. Lovesey's notes on the heating of the above. I am… | ||
| 03-page084 | Proposal for a chassis engine carburetter design using two butterfly valves in series. | ||
| View original record | X. 7080 Hs/ACL. from E. E4/MS.2.29. c. to SG. BY. PROPOSED CHASSIS ENGINE CARBURETTER. ================================ Referring to your memo. Hs/ACL/LG28.1.29., and R4/M1.2.29., I suggested about 2… | ||
| 03-page085 | Confirming the change from exhaust heating to water jacketed bend heating for the carburetter on SS chassis engines. | ||
| View original record | E. Dept. c. Hs. --------- X7080 BY2/G.11.2.29. SS. CHASSIS. ----------- We have received a memo from Experimental Department (Hs5/LG.8.2.29.) in which Hs. writes to R. to say that it has definitely… | ||
| 03-page086 | Carburettor performance and cold start tests for the SS chassis. | ||
| View original record | HS. E. from R. c. to Mr. Fuller. OY. c. to SG. BY. DA. C. c. to PN. CWB. SS. CHASSIS. CARBURATION AND STARTING FROM COLD. I am extremely pleased that your tests shew that the above is satisfactory… | ||
| 03-page087 | Carburettor valve performance, engine warm-up, and design suggestions for a water seal gland. | ||
| View original record | E. from R. Hs. BY. c. to SG. Wor. DA. c. to PN. CWB. CY. X7080 R2/1425.2.29. SS. CARBURATION. X.7080 WATER CIRCULATION. X.7250 X.7230 X.7180 Lec.2675 received of the valve working with shutter control… | ||
| 03-page088 | Engine failure caused by a carburetter air valve penny pin, recommending a reversion to a previous design. | ||
| View original record | To E. from Hs/Rn. c. to BY. Wor. X7050 Hs/Rn6/LG14. 3.29. CARBURETTER AIR VALVE PENNY PINS. X7050 We have completely scrapped an S.S. Cylinder head and damaged two pistons owing to the pin which… | ||
| 03-page089 | Drawings and application details for two different chassis parts. | ||
| View original record | E.72176 V. to 150 E2. 1650 chassis. E.76463 151 E2. to H2. 600 chassis. | ||
| 03-page090 | Request for parts and flowmeters for a supercharger carburetter testing rig. | ||
| View original record | Hy. from Hs/ACL. c. to RG. Wor. x7080 Hs/ACL1/LG19.4.29. SUPERCHARGER CARBURETTER TESTING RIG. X4550 We have made out the appended list of the parts and apparatus required for the S/C. carburetter… | ||
| 03-page091 | List of parts required for a carburetter testing plant for a Phantom engine and supercharger. | ||
| View original record | CARBURETTER TESTING PLANT. LIST OF PARTS REQUIRED. FOR PHANTOM ENGINE. (1) Oil cooler similar to one made for Phantom test bed (No.5.) in Expl: Dept: with modified oil pipes to suit cooler. (2) Water… | ||
| 03-page092 | Request for information on the form and size of air ports for S.S. Carburetters. | ||
| View original record | A.C-L- Hs. Y7080 BY23/G.16.5.29. S.S. CARBURETTERS The Works have now reached the stage when it is essential that we should define for them the form and size of the air ports in the air valve… | ||
| 03-page093 | Piston seizures caused by starter carburetter over-use and the appropriate method of warning. | ||
| View original record | s/w/160 S/W (BY) from H. (C. being absent.) X7080 H2/LH/19.6.29. Copies to: Wor. He. RP. Re: Over-use of starter carburetter and piston seizures Your BY/Ogh4/G18.6.29. is not understood. In your… | ||
| 03-page094 | Proposed modifications to the SS & 20 HP starter carburetters. | ||
| View original record | SECRET. X7280 Ry. from E. El/M22.6.29. Copy to Sg. Hs. SS. & 20 HP. STARTER CARBURETTERS. ------------------- Handwritten: X7280 Handwritten: x7280 We sent you a memo- R2/M15.6.29, to Hs. in answer to… | ||
| 03-page095 | Clarifying operational instructions for the starter carburetter, intended for the instruction book. | ||
| View original record | BY. c. to Hs. c. to Wor. c. to E. c. to H. 7280 EPL/H25.6.29. re. STARTER CARBURETTER. X.7280 X.5280 With reference to your BY/Cghl/24.6.29., I suggest the following points require making clear in the… | ||
| 03-page096 | The 'fuss or roar' of the engine and defending recent chassis improvements. | ||
| View original record | SECRET. X7080 Sg. from R. R5/M26.6.29. C. to Wor. Hs. By. PN. E. C. SS. - re. FUSS OR ROAR OF THE ENGINE. X7770 X7080 We cannot account for this other than by the more vigorous carburetter suction… | ||
| 03-page097 | 'SS' carburettors recommending no change to the air ports based on test results. | ||
| View original record | BY. from Hs/ACL. c. to Wor. 47080. Hs/ACL2/LG27. 6. 29. 'SS' CARBURETTORS. As the result of tests so far carried out we have not been able to effect any appreciable improvement by modification to the… | ||
| 03-page098 | Car pistons, starter carburetters, and potential modifications. | ||
| View original record | BY. FROM E: x7280 c. to SG. WOR. c. to HS. EP. E1/M27.6.29. CAR PISTONS AND STARTER CARBURETTERS. X.7280 X.5280 In reply to your query BY7/N21.6.29., we have no instructions to do any design work on… | ||
| 03-page099 | Secret report on vehicle performance issues including steering, engine roughness, and carburetter adjustments for the SS (Phantom 2). | ||
| View original record | X7080 Hs. from R. SECRET. R2/M28.6.29. c. to Sg. Wor. OY. c. to Mr. Fuller By. FN. EP. L. DA. E. SS. (OR NEW NAME SUCH AS PHANTOM 2. X7770 X928 X7080 The impression of variation in steering is… | ||
| 03-page100 | Confirming instructions to fit a starter carburettor to D.2 series pieces and produce a special spindle. | ||
| View original record | BY/cc. c. Hs. K7280 BY2/G.16.8.29. STARTER CARBURETTER. -------------------- I wish to confirm your verbal instruction of yesterday afternoon that we should at once instruct the Experimental… | ||
| 03-page101 | Replacement and experimental parts for an 'SS' Phantom Starting Carburetter. | ||
| View original record | TO R.H.G. c. Hs/Rm. X7280. BY/CS1/IG.16.8.29. Re "SS" Phantom - Starting Carburetter - Sec:5281. Will you please instruct one set of the following parts:- E.20881. Carburetter Body replaces E.75548.… | ||
| 03-page102 | Issue with a stretched throttle control spring on an S.S. Carburetter during tests. | ||
| View original record | To EY. From G.W.H. X7080 filing GWH.1/MJ.19.8.29. S. S. CARBURETTER. THROTTLE CONTROL SPRING. ----------------------- X7080. We had trouble on 21-EX during the tests in France with firing in the… | ||
| 03-page103 | Modifications to a starter carburettor to improve engine starting. | ||
| View original record | xy7280 filing To Ev. from Hs/GWH. C. to MX. WOT. GWH.1/MJ.26.8.29. S.S. STARTER CARBURETTER. -------------------------- To overcome the objection of E.P'and Mx's complaint, re too fine a setting of… | ||
| 03-page104 | Best mechanical jet settings for the S.S. engine carburetter. | ||
| View original record | To Hs/Rm. from Hs/AJL. C. to Mr. Walker. file x7080 Hs/AJL.1/MJ.29.8.29. S.S. ENGINE CARBURETTER JET SETTING. The best mechanical jet setting for the S.S. engine carburetter is as follows:- Low Speed… | ||
| 03-page105 | Petrol flow issues with an SS Carburetter float chamber and the satisfactory test of a new needle. | ||
| View original record | x7080. from Mx. Mx9/T30.8.29 SS CARBURETTER As I have already reported to you verbally we have trouble on the dynamometer at maximum revs. in obtaining sufficient petrol flow passed the float chamber… | ||
| 03-page106 | Questioning the necessity of proceeding with autovac testing based on a report that S.S. carburetter trouble is unrelated. | ||
| View original record | Hs/Rm. from SFT. C. to Wor. By. C. to Roy. Mx. x7080. SFT.4/B.2.9.29. x7510. x7080. Memo. Hs/Rm.1/MJ.26.8.29. We are making arrangements to test autovacs as per instructions contained in the above… | ||
| 03-page107 | Recurring petrol system failure possibly linked to the Autovac and the necessity for specific testing. | ||
| View original record | x7080 To Sft. from Hs/Rn. c. to WGR. BY. c. to RDY. Mx. Hs/Rn.4/AJ.2.9.29. x7510 x7080. With reference to SFT.4/B.2.9.29. While Mx. reports that the particular failure he is investigating is not due… | ||
| 03-page108 | The distribution of a leaflet titled 'Starting Carburetter' and its insertion into various chassis instruction books. | ||
| View original record | X 280 -BY. EP. Hm. Hy. Hm/NRC. Mx. He. BP. EFC. C. to Sn. Rolls-Royce School of Instruction. H. (Sales). Bkl.( ). from BY/N.W. BY/NW1/MB2.9.29. X 280 OVER-USE OF STARTING CARBURETTER. We send herewith… | ||
| 03-page109 | Requirement and methods for exhaust heating the carburettor's induction pipe on the Phantom II. | ||
| View original record | Hs. from R. c. Sg. By. Oy. X7080 R3/M4.10.29. X7910 X7238 PHANTOM II. INDUCTION PIPE HEATING. With reference to the requirement of exhaust heating for the carburetter on Phantom II, the following… | ||
| 03-page110 | Experimental instructions for 'S.S. Hot Spot' testing and a performance upgrade program for a 20 HP engine. | ||
| View original record | To CHP. from Hs/ACL. c. LNS. c. GP. *7080. Hs/ACL2/AD16.10.29. x7080. x7230 x5680 x5230, S.S. HOT SPOT EXPERIMENTS. (1) Make up two sets of thermo couples which can be used on car or test bed. (2) Run… | ||
| 03-page111 | List of action points for engine modifications, component testing, and comparisons with other models. | ||
| View original record | -2- (8) Put in hand a larger bore inlet manifold. All up to item (6) can be tested first (open exhaust) (7)&(8) can be tried later. (9) Look into the limits of dimensions of cylinder block, con. rods,… | ||
| 03-page112 | The development and testing of an expanding carburetter on a Standard Phantom I engine. | ||
| View original record | X.7080. To R. from Hs/ACL. c. Sg. c. Wor. E. c. Da. Ey. Hs/ACL1/AD21.10.29. R.R. EXPANDING CARBURETTER. Further work has been carried out on the R.R. expanding carburetter, and together with the later… | ||
| 03-page113 | Comparison of carburettor performance, focusing on choke sizes, manifold depression and power output. | ||
| View original record | -2- This we considered, was evidence that the larger restrictor employed with the larger choke was restricting the air flow to the choke. We then removed the two inner walls of the float chamber so as… | ||
| 03-page114 | Report page detailing carburetter experiments, including pressure restoration and power curve comparisons. | ||
| View original record | -3- standpipe for an ordinary jet made from the diffuser tube of an "F" engine carburetter. No emulsion air was admitted and the fuel was sprayed from holes in the top of the tube. The free choke… | ||
| 03-page115 | Technical analysis of carburettor modifications, including enlarged chokes and restrictors, to improve power output on Phantom and S.S. engines. | ||
| View original record | -4- old four port Phantom with full silencer system and are consequently lower than we are at present accustomed to on the S.S. engines. With the enlarged choke and restrictor, we found that removal… | ||
| 03-page116 | Report page detailing tests on a carburetor's jet needle, choke, and diffuser performance. | ||
| View original record | -5- output is good - not being too ambitious at the start e we intend to proportion the taper of the jet needle to give the required metering. We hope to have this done very soon and report on its… | ||
| 03-page117 | Graph of power curves comparing different carburettor configurations on a Standard Phantom engine. | ||
| View original record | EXPANDING CHOKE CARB. EXPTS. POWER CURVES ON STD PHANTOM ENGINE. R.R. EXPANDING CHOKE CARB. CHOKE DIA = 1 3/8" AND FLOAT CHAMBER WALLS REMOVED. COMPARISON WITH RRCH HAVING 1.53 DIA CHOKE AND STD… | ||
| 03-page118 | Graph plotting Brake Horse Power (BHP) against RPM for two expanding choke carburettor configurations. | ||
| View original record | EXPANDING CHOKE CARB. EXPTS. EXPANDING CARB WITH RESTRICTOR REMOVED AND CENTRAL JET PUT IN ITS PLACE GIVING FREE CHOKE AREA OF 1.400 □". EXPANDING CARB WITH RESTRICTOR GIVING A MAX FREE CHOKE AREA OF… | ||
| 03-page119 | Experiments on an exhaust-heated hot spot for the Phantom II engine. | ||
| View original record | To R. from Hs/ACL. c. BS. c. MOT. E. c. DA. EV. PHANTOM II EXHAUST HEATED HOT SPOT. We have carried out a number of experiments with exhaust heating to the hot spot jacket of Phantom II engine. The… | ||
| 03-page120 | Test report comparing exhaust temperatures with different silencer arrangements and suggesting design improvements. | ||
| View original record | -2- The temperature recorded during this test are considerably higher than encountered on a road test, the max. road test temperature being approx. 300°C. The arrangement was slightly different for… | ||
| 03-page121 | Power curve graph for Engine No. SS.15, comparing an exhaust-heated hot-spot system to a standard water-heated one. | ||
| View original record | POWER CURVE (EXHAUST HEATED HOT-SPOT) ENGINE No. SS.15 STANDARD INDUCTION SYSTEM EXCEPT FOR HOT-SPOT CAR TYPE SILENCER HOT-SPOT EXHAUSTS INTO ATMOSPHERE BRAKE HORSE POWER R.P.M. OF ENGINE HOT-SPOT… | ||
| 03-page122 | Blueprint drawing of an Exhaust Hot Spot Silencer. | ||
| View original record | V721 BLANK WELDED ON DRILL 30 HOLES .250 DIA 10 ROWS OF 3, STAGGERED AS SHOWN 1.000 .750 2.500 3.000 15.000 2.000 .375 .750 .375 EXHAUST HOT SPOT SILENCER. WELD WHERE MARKED 'A'. MATERIAL: SHEET STEEL… | ||
| 03-page123 | The standardisation of the Phantom II exhaust heated carburetter. | ||
| View original record | X7080. To By. from Hs. c. Wor. Hs4/AD25.10.29. PHANTOM II. We are expecting to standardise exhaust heated carburetter very shortly. The probable alteration is that the exhaust heated bend will be made… | ||
| 03-page124 | Experimental results for an exhaust-heated carburettor on the Phantom II. | ||
| View original record | To Sg. from Hs. x 7080. HS2/AD25.10.29. EXHAUST HEATED CARBURETTER FOR PHANTOM II. We have two experimental Phantom II cars running with exhaust heat to the carburetter. The results we are obtaining… | ||
| 03-page125 | Development and urgency of an exhaust heated carburetter for the Phantom II, specifically for the American market. | ||
| View original record | x7080 S/W To Hs. from Sg. re Exhaust Heated Carburetter for Phantom II. SG20/E28.10.29 Many thanks for Hs2/AD25.10.29. I am very interested to note that you have two experimental Phantom II cars… | ||
| 03-page126 | Design options for the Phantom II exhaust heated throttle and silencer system. | ||
| View original record | HS.) FROM BY.) R. c. to Sg. Wor. Ba. E. +7080. R.3/M28.10.29. PHANTOM 11 EXHAUST HEATED THROTTLE. I am very pleased to hear that the simple and original scheme is so satisfactory. I agree that it will… | ||
| 03-page127 | Standardisation of exhaust-heated carburettors for the Phantom II chassis, listing affected parts. | ||
| View original record | Sft. c. Wor. c. Hs. c. ROY. x7080. BY/Cghl/G.31.10.29. PHANTOM 11 CHASSIS - EXHAUST HEATED CARBURETTERS. The Experimental Department are hoping to get through the standardisation tests for the exhaust… | ||
| 03-page128 | Supply of new exhaust heated carburetter parts for a Phantom II to the American company. | ||
| View original record | S/W (Hs) copy to G. "" By. x7080. Whr3/MA1.11.29 (dictated 31.10.29). Re: Exhaust Heated Carburetter for "Phantom II". With reference to Sg20/E28.10.29, I saw Oy. yesterday, and he asked me to arrange… | ||
| 03-page129 | The fitting of an exhaust heated carburetter for a Phantom II. | ||
| View original record | W/s. C. Hs. O. G. +7080. BY/Cgh4/G.5.11.29. re EXHAUST HEATED CARBURETTER FOR PHANTOM 11. With reference to Whr3/MA.1.11.29. there should be no difficulty in R.R.A.I. fitting the new parts for the… | ||
| 03-page130 | Power output tests of an expanding choke carburetter on a Phantom II engine. | ||
| View original record | To R. from Hs/ACL. c. Sg. c. WGR. E. c. Ds. BY. X7080 Hs/ACL4/ADS.11.29. R.R. EXPANDING CARBURETTER - POWER OUTPUT ON PHANTOM II ENGINE. Most of the work on the Expanding Choke Carburetter has been… | ||
| 03-page131 | Progress report on resolving engine metering problems by testing combinations of needle taper and diffuser air piston springs. | ||
| View original record | Hs/ACL/4/ADS.11.29. contd. -2- needle taper. Now we have shewn that the power output is good we are working on the metering problem i.e. the right combination of needle taper, diffuser air piston… | ||
| 03-page132 | Graph comparing the power output of a Phantom III engine with an expanding choke carburettor versus a standard Phantom carburettor. | ||
| View original record | V740 POWER OUTPUT WITH EXPANDING CHOKE CARB. COMPARED WITH STD PHANTOM CARB ON A PHANTOM III ENGINE. OPEN EXHAUST. 160 140 120 100 80 60 40 EXP CHOKE CARB. STD PHANTOM CARB. 750 1000 1250 1500 1750… | ||
| 03-page133 | Analysis of obstructions in the petrol supply line to the carburettor and their effect on delivery flow rates. | ||
| View original record | To R. from Hs/Rn. c. SG. c. WOT. E. c. DA. EY. X. 7080 Hs/Ha2/AD7.11.29. PETROL SUPPLY TO CARBURETTOR. x7080 x7770 We have only just sufficient petrol supply in the float chamber to keep the car… | ||
| 03-page134 | Analysis of fuel flow obstructions and delivery rates under various supply conditions. | ||
| View original record | -2- State of Supply Delivery Pts/Hr. (5) Banjo coupled up. Delivery taken through bottom of valve seat unit (G in sketch) 89 pts/hr. (6) As (5) but delivery taken through needle valve seat (E) 78.0… | ||
| 03-page135 | Table of fluid delivery results under various component configurations. | ||
| View original record | Column 1: Delivery through needle valve. Delivery through needle valve seat, needle removed. Column 2 (Header: Standard Conditions): 75.0 78.0 Column 3 (Header: With largest banjo reasonable cross… | ||
| 03-page136 | Needle valve seat and fuel flow tests with recommendations for improvement. | ||
| View original record | HS/Rm2/AV/7.11.29 contd. -3- of the needle valve seat because we get no improvement when we open up dia x. from .218 to .312. We also tried under-cutting the seat to reduce the length of the narrow… | ||
| 03-page137 | Comparison table of flow rates for a standard filter versus a modified filter. | ||
| View original record | Hs/Rm2/AD/.11.29 contd. -4- | Standard filter | Modified filter ---|---|--- Flow from banjo condition (4) | 97.5 pts/hr. | 110 pts/hr. Flow through needle valve condition (7) | 75 pts/hr. | 78.7… | ||
| 03-page138 | Drawing of a nipple used for petrol flow tests. | ||
| View original record | 6-11-29 lbs 2.43 NIPPLE USED FOR PETROL FLOW TESTS - S.S MADE FROM F 47S. Nut E51307 OPENED OUT .375 DIA TO ADMIT NIPPLE THESE WERE MADE TO REPLACE THE BANJO TYPE FITTINGS OF E76531 VALVE SEATING… | ||
| 03-page139 | Blueprint showing the dimensions of a larger banjo used on petrol flow tests, supplied with Zenith petrol filters. | ||
| View original record | Hs 244 1-11-29 .400 DIA .312 DIA .675 DIA .480 DIA .280 .480 .120 .500 .775 DIA of UNDERCUT .440 DIA .950 DIA DIMENSIONS OF LARGER BANJO USED ON PETROL FLOW TESTS - S.S. SUPPLIED WITH ZENITH PETROL… | ||
| 03-page140 | Cross-section drawing showing a modification to part E76531 for petrol flow tests. | ||
| View original record | Hs 241 of S.A.T.S.S 4-10-29 .300 .210 .2187 DIA X 1.387 -10 MODIFICATION TO E76531 PETROL FLOW TESTS DESIGN OFFICE No 17 7 NOV 1929 | ||
| 03-page141 | Blueprint detailing a valve assembly and various points at which petrol flow deliveries were measured. | ||
| View original record | Needle Valve Removed. Delivery E. Needle Valve in Position Delivery A Delivery Through Banjo C Delivery H Delivery Through Bottom of Banjo Union or Valve Seating Connection G Various Points at which… | ||
| 03-page142 | Testing and development of an exhaust heating device for Phantom II carburettors, for chassis ordered by America. | ||
| View original record | *7080 A3 To Hs. from Sg. re Exhaust Heating to SG23/Ell.11.29 Copy to Wsr. War. Carburetters. Phantom II. Would you please let me know what testing or development work has taken place in regard to… | ||
| 03-page143 | Noise issue with the exhaust heating system for Phantom II carburettors. | ||
| View original record | x.7080. To Sg. from Hs. c. Wor. c. War. Hsl0/AM2.11.29. EXHAUST HEATING TO PHANTOM II CARBURETTERS. ---------------------------------------- Sg.23/Ell.11.29. We have come up against a difficulty with… | ||
| 03-page144 | Noise issues with the exhaust heated hot spot on the Phantom II. | ||
| View original record | X 7080. To R. from Hs. c. Sg. c. W.F. E. c. Da. HY. Hs2/AD16.11.29. x7080 x7230 x7772. EXHAUST HEATED HOT SPOT - PHANTOM II. We are in trouble with the scheme because when this is fitted we have not… | ||
| 03-page145 | Customer suggestion to connect the red warning lamp to the starter carburetter on Phantom cars. | ||
| View original record | To R. from Hs. c. SS. c. Wor. E. c. De. Sy. X 7280 Hs2/AM.8.11.29. STARTER CARBURETTER FOR PHANTOM CARS. We have received a suggestion from one of our customers which we consider is worthy of… | ||
| 03-page146 | Proposal to add a red warning lamp for the starting carburetter to alert customers when it is left on. | ||
| View original record | To D. Dept. c. E. Dept. c. Hs. x7280 BY16/N.18.11.29. X5280 X7280 X8280 Re: Starting Carburetter. ------------------------ In order to warn customers when the starting carburetter has inadvertently… | ||
| 03-page147 | Design to silence the noise in the exhaust heated induction pipe for the Phantom II. | ||
| View original record | By. from E. c. Sg. HS. X7080. E4/M27.11.29. X7910 X7230 PHANTOM II EXHAUST HEATED UPTAKE. We send herewith LeC. 2766, showing the above. The object of the design is to silence the noise in the exhaust… | ||
| 03-page148 | Design schemes for an exhaust-heated throttle on the Phantom II model. | ||
| View original record | X7080. Hs. } FROM R. Ry. c. Sg. Wor. R1/M29.11.29. X7910 X7238 PHANTOM II. EXHAUST HEATED THROTTLE. We agree that this should be done universally as soon as possible on all cars. We have sent a scheme… | ||
| 03-page149 | Alternative exhaust-heated carburettor uptake for the Phantom II, designed to dampen exhaust noise. | ||
| View original record | BY. FROM E. x1080 E1/M3.12.29. Copy to SG Copy to HS. PHANTOM 2. EXHAUST HEATED CARBURETTER UPTAKE. We send you herewith LeC. 2767. shewing the above. This design is an alternative to the corridor… | ||
| 03-page150 | Proposal for improvements to carburetters, outlining a system combining fixed and expanding type features. | ||
| View original record | HS. BY. Mr. CLAREMONT. ) FROM R. X7080 Copy to SG. WOR. E. R3/M3.12.29. X.7080. X.5080. IMPROVEMENTS IN CARBRUETTERS In motor car work the call for power from the engine varies very greatly, namely,… | ||
| 03-page151 | Technical description of carburettor design features and principles of operation. | ||
| View original record | (2) It is also preferable to multiple jets because of the difficulty of the imperfect way they come successively into action. Probably the best arrangement of this carburetter is in the vertical type,… | ||
| 03-page152 | Page discussing an air valve, a restrictor needle, and referencing an attached carburetter drawing. | ||
| View original record | - 3 - of the actual air valve, and of the restrictor needle in the fuel passage. _________ The drawing of the carburetter - LeC. 2768. - is attached to BY's copy of this memo. R. | ||
| 03-page153 | New expanding carburetter design based on a recent patent, aimed at increasing MEP at higher speeds. | ||
| View original record | HS. BY. FROM R. X7080 R2/M4.12.29. C. to SG. WOR. RG. CAR CARBURETTERS. X.7080. X.5080. E. is very busy getting out a first drawing of the carburetter in accordance with our recent patent, namely,… | ||
| 03-page154 | Modifications to the Phantom II Air Silencer Carburetter to reduce power loss. | ||
| View original record | To Ey. From Hs/ACD. c. to E. X7080. Hs/ACL.1/AF.7.12.29. PHANTOM II AIR SILENCER CARBURETTER. Experiments carried out shew that we have to make certain modifications to the chassis Air Silencer… | ||
| 03-page155 | List of requested alterations for various parts, with a supporting diagram for one modification. | ||
| View original record | Please supply drawings showing the following alterations :- (1) E.79642 - Length of slots increased to 2.900".no (2) E.79643 - Size of the 40 holes to be increased to .505.no dia. (3) E.79644 - Length… | ||
| 03-page156 | From Sg. to Hs. regarding the approval and fitting of an exhaust-heated carburettor. | ||
| View original record | x7080. x7230. x7080. To Hs. from Sg. re Exhaust Heating to Carburetter. Sg21/E16.12.29 I should be glad to know whether R. approved of the exhaust heated carburetter as fitted up on 18-EX, and whether… | ||
| 03-page157 | Issuing a standardisation sheet for an exhaust heated bend for the Phantom II model. | ||
| View original record | x7080. To Sg. From Hs. c. Wor. C. c. By. Hs.1/MJ.16.12.29. X.7772 X.7230 X.7080 EXHAUST HEATED BEND FOR PHANTOM 11. We are issuing a standardisation sheet for exhaust heated bend for Phantom ll so… | ||
| 03-page158 | Carburetter standardisation, Phantom II frame modifications, and the 20 HP model. | ||
| View original record | X7080. To SG. From Hs. c. to WGR. Hs.1/WJ.17.12.29. X7770. X7230 X7080. X4674. Replying to Sg21/Z16.12.29. We have already sent round a standardisation sheet for a preliminary scheme of exhaust… | ||
| 03-page159 | Design decisions for rubber engine mountings, aero engine R, reduction gear noise, and material treatments. | ||
| View original record | -2- completed the design for the rubber engine mounting. No decision was come to as regards any further modification to the 20 HP. Whilst discussing the aero engine R. agreed that Rg. should go ahead… | ||
| 03-page160 | Requesting views on an attached note regarding an exhaust heated carburetter. | ||
| View original record | To Bx. From Wor. To Hs. " " X7080. Wor7/T.18.12.29. Re Exhaust Heated Carburetter. I attach copy of a note to Hs' copy (By already having received a copy) of memo received from Cx. this morning. Could… | ||
| 03-page161 | Requesting to fit an exhaust heated carburetter to a customer's Phantom II chassis destined for the U.S.A. | ||
| View original record | Copy. Cx14/KW17.12.29. S/W. Wor. Copy to BY. Sn. Re Exhaust Heated Carburetter. Sg. informs me that a Standardisation Sheet for exhaust heated carburetter for Phantom II is now being issued, so that… | ||
| 03-page162 | Fitting of an exhaust heated carburetter to Phantom II cars destined for use in the U.S.A. | ||
| View original record | To Wor. From Hs. c. to By. X7080- Hs.2/MJ.19.12.29. EXHAUST HEATED CARBURETTER PHANTOM 11. We see no reason at all why the suggestion for the exhaust heated bend should not be fitted to Mrs. Barings… | ||
| 03-page163 | Report discussing piston seizure and scoring issues attributed to misuse of the starter carburetter, proposing a modification. | ||
| View original record | Pt.2/PH/19-12-29 47280 By. Derby. (Copy to Hm,Derby, Whr,London, Hs. Derby.) Some time ago Chassis 33-CL - Chirnside, seized up unaccountably within a mile of leaving the coach-builders where it was… | ||
| 03-page164 | Suggestion for a simplified, non-adjustable lubrication system using an 'upper cylinder' lubricant. | ||
| View original record | Pt.2/PH/19-12-29. By.Derby. (Copies to Hn. & Hs.Derby & Whr.London) -2- capable of being tinkered with and the whole raison d'etre might be nullified. As an alternative to oil under pressure, an oil… | ||
| 03-page165 | Tests carried out on an Air Silencer Carburetter S.S. detailing power loss issues. | ||
| View original record | To R. From Hs/ACL. c. to Gk. c. to WOF. c. to L. c. to Da. c. RY. +7080. Hs/ACL.1/MJ. 20.12.29. AIR SILENCER CARBURETTER S.S. ------------------------- V7080 X7770. A number of tests have been carried… | ||
| 03-page166 | Analysis of power loss caused by cowling and air-silencer modifications on a carburetter. | ||
| View original record | -2- of the cowling around the air-valve ports. The curve V.758 shews the power loss caused by this cowling, which amounts to 3.0% at 2500 R.P.M. Since fitting the standard air-valve, diaphragm and… | ||
| 03-page167 | Proposed modifications to a silencer and carburettor to improve airflow and reduce noise. | ||
| View original record | -3- The aforementioned modifications are thought to be the most that can be done to the existing parts, as the air flow is restricted at the air valve ports and the annular spaces between the… | ||
| 03-page168 | Graph comparing Brake Horse Power vs RPM for an engine with different air silencer carburettor configurations. | ||
| View original record | 6-12-29 AIR SILENCER CARBURETTOR (L.C. 2734) V757 ENGINE No SS-7 STANDARD INDUCTION MANIFOLD OPEN EXHAUST BRAKE HORSE POWER R.P.M. OF ENGINE STANDARD CARB. MODIFIED AIR SILENCER CARB. (STD. AIR VALVE… | ||
| 03-page169 | Graph plotting Brake Horse Power against RPM for Air Silencer Carburettor development on Engine No. S-7. | ||
| View original record | 9-12-29 V 758 AIR SILENCER CARB. DEVOLOPEMENT. ① ENGINE Nᵒ S-7 STRAIGHTENED INLET PIPE OPEN EXHAUST BRAKE HORSE POWER R.P.M. OF ENGINE STANDARD CARB. CURVE Ⓑ: AIR SILENCER CARB (L.C. 2724), FITTED… | ||
| 03-page170 | Performance graph analysing silencer losses during air silencer carburettor development on Engine N° 55-7. | ||
| View original record | AIR SILENCER CARB DEVOLOPEMENT ② ANALYSIS OF SILENCER LOSSES ENGINE N° 55-7 STD. INDUCTION PIPE OPEN EXHAUST STANDARD CARB BRAKE HORSE POWER RPM OF ENGINE CURVE A: AIR SILENCER CARB (LC 2734) FITTED… | ||
| 03-page171 | Performance graph analyzing engine brake horsepower versus RPM for various air silencer carburetor configurations and losses. | ||
| View original record | AIR SILENCER CARB DEVOLOPEMENT ② ANALYSIS OF SILENCER LOSSES ENGINE N° SS-7 STD. INDUCTION PIPE OPEN EXHAUST STANDARD CARB BRAKE HORSE POWER RPM OF ENGINE CURVE Ⓐ: AIR SILENCER CARB. (L.C. 2734)… | ||
| 03-page172 | Design, materials, and silencer for the Phantom II exhaust-heated induction pipe. | ||
| View original record | X7080 R. from E. C. SG. HS. Hy. E2/M21.12.29. PHANTOM II EXHAUST HEATED INDUCTION PIPE. It will be remembered that designs have been completed for the above as far as the induction pipe and its… | ||
| 03-page173 | Required modifications for the Air Silencer Carburetter, LeC.2734. | ||
| View original record | To E. From Hs/ACL. c. to HV. Wor. X7080 Hs/ACL.2/MJ.28.12.29. AIR SILENCER CARBURETTER LeC.2734. We have found that certain modifications to the Air Silencer Carburetter are necessary in order to get… | ||
| 03-page174 | Drawing for a proposed modification to the Phantom II Air Silencer. | ||
| View original record | MS. FROM E. Copy to SG. Copy to WOR. Copy to BY. X7080 E1/M2.1.30. PHANTOM 2. AIR SILENCER. We have a drawing in hand of proposed modification to the above. E. | ||
| 03-page175 | The exhaust heated throttle fitted to cars sent to America. | ||
| View original record | To Hm. From Hs/Rn. For Depot Sheet. x7080. Hs/Rn. 2/3.1.30. EXHAUST HEATED THROTTLE. V7772. X7910 Cars despatched to America will be fitted with an exhaust heated throttle. This takes the place of the… | ||
| 03-page176 | The supply and fitting of exhaust-heated carburetters for various Phantom II chassis. | ||
| View original record | S/W. (Wer.) c. to Hs. c. to D/DP. c. to BF. c. to Sn. Hs. x7080. x7910 x7772 Re: Exhausted Heated Carburetters - Phantom II. Hs.1/MJ.16.12.29. Sg. authorises that the fittings for exhaust-heated… | ||
| 03-page177 | Modification instructions for the Phantom 11 carburetter air inlet and silencer. | ||
| View original record | c. He/ACL. X7080 BY/CS1/IG.4.1.30. RE PHANTOM 11. Modification to Carburetter Air Inlet & Silencer - Sec:5080. Please receive herewith prints of the following drawings, detailed in accordance with… | ||
| 03-page178 | Modification of a suction piston for a high-speed choke tube. | ||
| View original record | -2- BY/CS1/IG.4.1.30. The suction piston is standard design, shortened slightly, to suit the higher castle of the High Speed Choke tube. Will Hs/ACL please note that the above does not include the… | ||
| 03-page179 | The results of fitting a Solex Duplex carburettor to a Phantom II engine. | ||
| View original record | To R. From Hs/ACL. c. to Sk. Nor. c. to E. Da. c. to Ey. 87080. Hs/ACL.1/MJ.7.1.30. X3603. X7080 SOLEX DUPLEX CARBURETTER. TESTS ON PHANTOM II ENGINE. Sometime ago we carried out tests on Phantom I… | ||
| 03-page180 | Performance comparison of Standard, R.R.C.H., and Solex twin carburettors on a Phantom II engine. | ||
| View original record | -2- by 3.25", the power was reduced a maximum of 3%. On an appended print we give three power curves taken on Phantom II engine with (a) Std. chassis carburetter. (b) R.R.C.H. carburetter. (c) Solex… | ||
| 03-page181 | The performance of a Solex induction system and carburetter on a Phantom I car (12-EX). | ||
| View original record | -3- Excellent distribution was obtained with the Solex induction system and the hot spot on the bends, although of such small area, proved to be very effective. Previously when we tested this… | ||
| 03-page182 | Graph plotting Brake Horse Power against RPM for Solex twin carburettor tests on a Phantom II engine. | ||
| View original record | B.H.P. SOLEX TWIN CARB. TESTS ON PHANTOM II ENGINE. OPEN EXHAUST RESULTS POWER CORRECTED FOR TEMP & PRESS. 32MM SOLEX .893 B "CHOKE" STD PHANTOM R.R.C.M 1.900 "CHOKE" X-AXIS (B.H.P.): 40, 50, 60, 70,… | ||
| 03-page183 | Query about the suggestion to add a red warning lamp for the starter carburetter on 'Phantom' cars. | ||
| View original record | S/W. Hs...from PN. Copy to Sg. Wor. H. De. By. M280 PN.1/WT10.1.30. STARTER CARBURETTER FOR "PHANTOM" CARS. Was the suggestion in your Hs2/AD.18.11.29 approved or modified by R. and is it proposed to… | ||
| 03-page184 | Drawing for an expanding carburetter with a fixed throat for the Phantom II. | ||
| View original record | BY. FROME. C. to SG. R. HS. X7080 E2/M19.1.30. R.R EXPANDING CARBURETTER WITH FIXED THROAT - PHANTOM 2. The number for the above drawing left with you at Derby yesterday is Lec. 2780. Would you please… | ||
| 03-page185 | Modification to force lubricating oil into cylinders when using the starting carburetter. | ||
| View original record | Pb. C. c. Hs. ----- +7280 BY/C.M16/G.28.1.30. With reference to PH/2/FR/19.12.29, a special point is made in our instruction books in connection with the proper use of the starting carburetter, but… | ||
| 03-page186 | The performance improvements of the Phantom II engine when fitted with a twin Solex carburettor, including feedback from Sir Henry Segrave. | ||
| View original record | x7080 To R. (held up) From Hs. c. to BE. W.R. c. to E. Da. c. to HY. PN. PHANTOM II CARBURETTORS AND PERFORMANCE. We have recently sent a report showing the increase in BHP on a Phantom II engine when… | ||
| 03-page187 | Improving engine performance and acceleration by using twin carburetters, with references to competitors and specific engine models. | ||
| View original record | -2- hold our power at full throttle down to 32) r.p.m. six to seven m.p.h. on top gear. We can get instant acceleration from eight m.p.h. by opening to full throttle suddenly there are no flat spots… | ||
| 03-page188 | Dynamometer and road test report comparing a Solex twin choke carburetter against the standard on a Phantom II. | ||
| View original record | x7080 (crossed out) To R. (Held up) From Hs/AJL. c. to Sg. Wor. c. to W. Da. c. to Ry. PM. Hs.3/14J. 22.1.30. x7080 x7770. SOLEX TWIN CHOKE CARBURETTER ON PHANTOM II. POWER AT ROAD WHEELS AND ROAD… | ||
| 03-page189 | The performance of a simple carburettor and potential improvements. | ||
| View original record | -2- carburetter as regards metering at medium throttle openings etc. but in spite of this it functions remarkably well. It is possible to bang open the throttle from 5 m.p.h. on top gear and the car… | ||
| 03-page190 | Graph comparing power at road wheels for a Solex Twin Choke Carburetter versus an RR Carburetter on a Phantom II. | ||
| View original record | SOLEX TWIN CHOKE CARBURRETTTER ON PHANTOM II POWER AT ROAD WHEELS ( 32MM CHOKES IN SOLEX CARBURRETTER ) IGNITION TIMING. MAG. 18° B.T.D.C. BATTY. 12° B.T.D.C. CUT-OUT CLOSED. CHASSIS N° 19 Ex. ROAD… | ||
| 03-page191 | Resolving petrol feed issues on the Phantom II model during dynamometer testing. | ||
| View original record | To By. From Hs/Rn. c. to E. c. to MX. c. to Wor. x7080. Hs/Rn. 2/MJ. 27.1.30. x7940c. x3320. x7080. PETROL FEED. PHANTOM 11. Some months ago the difficulty of obtaining a satisfactory petrol feed on… | ||
| 03-page192 | Modifications to the Phantom II air inlet silencer to reduce power loss. | ||
| View original record | BY. FROM E. .17080 E2/M28.1.30. Copy to SG. Copy to HS. PHANTOM 2. AIR INLET SILENCER. We send you herewith a blueprint of LeC.2786. shewing the above modified to reduce the power lost which occurred… | ||
| 03-page193 | The Phantom II exhaust heated throttle, its testing, and a proposal for an extra oil supply scheme. | ||
| View original record | Hs. G.So G.Wot. G.IS G.DA G.Ey G.PH X7080. EP18/T28.1.30 re PHANTOM II EXHAUST HEATED THROTTLE With reference to Standardisation Sheet re the above. I have today signed this, being satisfied that if… | ||
| 03-page194 | Test report and recommendation for the Phantom II exhaust heated jacket induction system silencer. | ||
| View original record | x7070. Hs/AJL.1/WJ.30.1.30. x7910 x7070 To R. From Hs/AJL. (Held up). c. to SG. Wor. c. to DA. R. c. to HY. PHANTOM II EXHAUST HEATED JACKET INDUCTION SYSTEM. We have tested the silencer to M.Sch.3004… | ||
| 03-page195 | Phantom II exhaust heated jacket induction system, the malleable iron feed pipe, and a silencer design. | ||
| View original record | HS. FROM E. C. to SG. R. (held up) C. to WOR. BY. DA. x7070 EL/M1.2.30. X.7230. X.7910. X.7070. PHANTOM 2. EXHAUST HEATED JACKET INDUCTION SYSTEM - HS/AJL1/MU 30130. We are glad you find our malleable… | ||
| 03-page196 | Unsatisfactory noise issue with exhaust heated throttles on production chassis under light load. | ||
| View original record | Hs. C.E. E.P. C.M. X7910. EP11/N14.2.30. re. EXHAUST HEATED THROTTLES. Although we are now accepting these on Production chassis, I do not think from a noise point of view they can be considered… | ||
| 03-page197 | Responding to a complaint about a noisy exhaust heated throttle system on the 22-EX chassis. | ||
| View original record | EP. From Hs/Rn. c. to E. BY. MX. X7910 Hs/Rn.1/W.15.2.30. EXHAUST HEATED THROTTLE. With reference to EP11/H14.2.30. We are unable to appreciate that the production exhaust heated throttles are any… | ||
| 03-page198 | Proposing finer manufacturing limits for the Phantom II exhaust heated induction bend. | ||
| View original record | BY. From Hs/AJL. c. to E. x 7910. Hs/AJL.1/WJ.18.2.30. EXHAUST HEATED INDUCTION BEND. PHANTOM II. On examination of the detail drawings of E.80194, (Feed Pipe) and E.80010 (Jacketed Bend) we find that… | ||
| 03-page199 | The eighth report of the design committee discussing developments for the Phantom ll, 20 HP, Condor, and Schneider Trophy engines. | ||
| View original record | R.(Held up). Sg. Wor. BY. E. Hs. X7080. Rg.3/LW.25.2.30. X.2924 X.7080 X.4418 X.4649 EIGHTH REPORT OF DESIGN COMMITTEE. Twin Carburetter on Phantom ll Engine. This question was discussed and it was… | ||
| 03-page200 | Engine modifications and development requirements for the 1931 Schneider Trophy race. | ||
| View original record | RES/LW.25.2.30. -2- Schneider Trophy 1931 (contd.) We are confident that no drastic re-design of the engine is necessary but a good many of the pieces will require modification, that is, the engines… | ||
| 03-page201 | Summary of tests with twin Solex carburetters on the Phantom II vehicle, comparing performance improvements. | ||
| View original record | To Hs. From ACL. X7080. V1053 X7080. SUMMARY OF TESTS WITH TWIN CARBURETTERS ON PHANTOM 11. --- Our tests with Twin Solex carburetters on Phantom 11 show that the improvement so obtained is greater… | ||
| 03-page202 | Extract from quarterly complaints for the 20 HP & Phantom models, detailing a suggestion for the starter carburetter. | ||
| View original record | EXTRACT FROM:- Rn. From Hs. C. to AJL. x7280 HS.1/MJ.27.2.30. xJL80 QUARTERLY COMPLAINTS OF 20 HP. & PHANTOM. Points which need Experimental attention are as follows:- (6) STARTER CARBURETTER. There… | ||
| 03-page203 | Standardisation of an exhaust heated induction pipe bend to improve carburation on cars for the U.S.A. | ||
| View original record | RR 753 REVISED (10M) (OF 657 4-1-29) SM. 2/5243. X7910. COMPLETED - 7.3.30. STANDARDISATION of CHASSIS PARTS. Date 16.12.29. X No. X.7910. Description of Parts. Exhaust Heated Induction Pipe Bend.… | ||
| 03-page204 | Standardisation document for an exhaust heated induction pipe bend. | ||
| View original record | STANDARDISATION of CHASSIS PARTS Exhaust Heated Induction Pipe Bend. To improve carburation. This scheme is the prop. of A.E. and for immediate use. To be used on cars XI-XX As fitted to XI-XX It is… | ||
| 03-page205 | Proposal for the standardisation of the Phantom II exhaust heated induction pipe bend system. | ||
| View original record | He/AJL.13.12.29. PHANTOM 11 EXHAUST HEATED INDUCTION PIPE BEND. The exhaust heated hot spot system which is fitted to 18-EX and which is proposed for immediate standardisation is as follows :- (a)… | ||
| 03-page206 | Proposing a design for an adjustable mechanism for the radiator shutter and starting carburetter controls. | ||
| View original record | X7280 Ry. from Da. c. Hs. De7/G11.4.30. RADIATOR SHUTTER & STARTING CARBURETTER CONTROLS. X.3499 X.5240 X.7240 X.7280 X.5280 With reference to the question of providing an adjustment for the above… | ||
| 03-page207 | Development of twin carburetters for 6-cylinder engines, potentially for the Phantom II. | ||
| View original record | X7080 E. Hs. } FROM R. By. } (At Le Canadel) R2/14.5.30. C. Sg. Wor. Da. X.7080. X.5080. CAR WORK - CARBURETTERS. From HS/AJL's work we shall probably have twin carburetters for 6 cyl. engines, and… | ||
| 03-page208 | Power loss due to the carburettor air silencer and proposed modifications. | ||
| View original record | x7080. To R. (Held up) From Hs/Rm. C. to GG. Cor. C. to SS. De. C. to L. HV. Hs/Rm.2/MJ.7.5.30. AIR SILENCERS CARBURETTOR. The attached report shows that we still lose more power than is desirable… | ||
| 03-page209 | Preliminary tests of a modified air-silencer carburetter (LRC.2786) for F.II engines. | ||
| View original record | To H. (Held up) From Hs/CHP. c. to Sg. Mor. c. to Rg. Da. c. to E. Hy. MODIFIED AIR SILENCER CARBURETTER (LRC. 2786). Preliminary tests have now been carried out on the modified air-silencer… | ||
| 03-page210 | Analysis of power loss from air-port cowling and silencer tubes with proposed modifications to improve performance. | ||
| View original record | -2- (8%) at 2750 R.P.M. This figure may be split up as follows :- Air port cowling = 4 BHP.(3%); air-silencer end pieces, E.904 65/6 = .8 BHP.(.6%); inner silencer tube E.80481 = 2.2 BHP.(1.7%); outer… | ||
| 03-page211 | Blueprint graph comparing brake horsepower against engine RPM for a Phantom II engine with and without an air silencer carburettor. | ||
| View original record | 6-5-30 V850 AIR SILENCER CARBURETTOR (Le.C.2786). PHANTOM II ENGINE No SS-7. STANDARD INDUCTION SYSTEM OPEN EXHAUST BRAKE HORSE POWER R.P.M. OF ENGINE. STANDARD CASE AIR SILENCER CASE to L.C. 2786. | ||
| 03-page212 | Graph analysing the power loss of an air silencer carburettor by plotting brake horse power against engine RPM. | ||
| View original record | 6.5.30 V851. AIR SILENCER CARBURETTOR (LEC 2786) ANALYSIS OF POWER LOSS: ENGINE No SS-7 STANDARD INDUCTION SYSTEM. OPEN EXHAUST. STANDARD CARBURETTOR WITHOUT AIR INTAKE. BRAKE HORSE POWER R.P.M. OF… | ||
| 03-page213 | Preliminary test report and modification request for the Phantom II starting carburetter nozzle and needle. | ||
| View original record | To E. From Hs/AJL. c. to BY. X7280. Hs/AJL.1/WJ.14.5.30. PHANTOM 11 STARTING CARBURETTER WITH FIXED MAXIMUM RESTRICTION LEC.2731. Preliminary tests carried out on the fixed maximum restriction… | ||
| 03-page214 | Diagram of a needle valve assembly for a starting carburetter. | ||
| View original record | STARTING CARBURETTER & E2731 MODIFIED NEEDLE WITH 30° SEAT NEEDLE VALVE SEATING .031" MAX RESTRICTION HOLE | ||
| 03-page215 | Oil draining and power loss issues with a carburetter silencer, proposing design modifications. | ||
| View original record | Hs. from E. c. Sg. By. X7080 E2/M31.5.30. X.7080 X.7910. P. 2. CARBURETTER SILENCER Referring to the complaint of oil draining from the carburetter after a hard run on 23-EX. the only difference we… | ||
| 03-page216 | Comparing the power output of an experimental induction pipe versus a production induction pipe. | ||
| View original record | 87070. To Mx. From Hs/Rm. INDUCTION PIPES. We hand you herewith the induction pipe of which we spoke to you yesterday. The following figures shew the power obtained with this pipe compared with the… | ||
| 03-page217 | Carburetter silencer design, suggesting experiments for oil discharge and a modification for power loss. | ||
| View original record | X7080 Hs. } FROM E. By. } c. Sk. Wor. E2/M2.6.30. X7080 P.2. CARBURETTER SILENCER. Referring to our drawing Lec. 2802, R. is not in agreement with this scheme as yet. He would prefer to retain the… | ||
| 03-page218 | Modifications to the carburetter silencer to reduce power loss at high speed. | ||
| View original record | X7080 BY. from E. c. Sg. c. Wor. Hs. E1/W4.6.30. X7080. P.2. CARBURETTER SILENCER. We send herewith Lec. 2803. shewing modifications for reducing the power loss at high speed, as follows :- (1) Larger… | ||
| 03-page219 | Temperature tests and issues found during trials at Brooklands. | ||
| View original record | COPY. X7080 To Hs/Hn. From F.Dodd. Hs/FD.1/WJ.11.6.30. X.788. X.766. X.7080. X.4050. X.3395. BROOKLANDS 4.6.30. Temperature tests of top and bottom water temperature, oil temperature, scuttle… | ||
| 03-page220 | Acceleration test results comparing a standard carburetter with an air silencer carburetter. | ||
| View original record | Hs/FDL/Wll.S.30 contd. -2- during these tests, temporarily, but came free after cooling down, Acceleration tests were taken with both air silencer and standard carburetters fitted. These shew that the… | ||
| 03-page221 | Steering tests conducted at Brooklands with different tyre types and pressures. | ||
| View original record | BROOKLANDS. STEERING TESTS. 4.6.30. Tests were carried out with Standard Dunlop Silent tyres. U.S.A. 7 x 19 Royal, and 7 x 20 ½" off set special. U.S.A. 7 x 19 at 40 lbs. pressure. Steering slightly… | ||
| 03-page222 | Test report on Dunlop Silent Tyres, evaluating steering and ride quality at various pressures and with different wheel setups. | ||
| View original record | 7 x 20 Dunlop Silent Tyres. At 40 lbs. - Steering very light at high speeds, not so positive as 1/2" Off-set wheels. Good for joggles. At 35 lbs - Steering not quite so light but joggles slightly… | ||
| 03-page223 | Progress report on the design of double carburettors for the P. 2 engine. | ||
| View original record | Extract from - X7080 SG. RG.) FROM R. HS. BY.) RL/M8.7.30. WORK AT W.W. DOUBLE CARBURETTERS FOR P. 2. ENGINE. Good progress has been made, and some hope ful ideas with this job, but disappointment has… | ||
| 03-page224 | The production of an experimental induction pipe for the P. 2 research project. | ||
| View original record | X 7070 HS. FROM E. E1/M11.7.31. C. to SG. WOR. BY. X7070 EXPERIMENTAL INDUCTION PIPE. We send you herewith Lec. 2927. in accordance with R's instructions, shewing a pipe for P. 2, which can be adapted… | ||
| 03-page225 | Increasing petrol consumption and proposing tests on carburetter performance. | ||
| View original record | Hs. from R. c. Sg. By. X7080 R5/M10.7.30. X.459 X.7080 X.5080 CARBURATION. Our petrol consumption is increasing rather alarmingly. We hope that this will not be worse with the fixed carburetter, I… | ||
| 03-page226 | Standardisation report on a new union in the feed pipe to the carburetter. | ||
| View original record | RR 755 REVISED (10M) (OF 687 4-1-28) RM. 2/5943 X7080. COMPLETED 16.7.30. STANDARDISATION of CHASSIS PARTS. Date 6.6.30. X No. 7080. Description of Parts. NEW UNION IN FEED PIPE TO CARBURETTER.… | ||
| 03-page227 | Design suggestions for a non-expanding carburettor, specifically the accelerator pump mechanism. | ||
| View original record | X7080. By. from E. c. Sg. Hs. By/NW. c. Mr.Claremont. E1/M23.7.30. NON-EXPANDING CARBURETTORS ----------------------- X.7080. In connection with the above R. has made one or two suggestions which… | ||
| 03-page228 | The function of an accelerator pump and a starting device for a carburetter system. | ||
| View original record | -2- These springs may be individually varied in loading, etc. to give any desired period of lag for charging or discharging the accelerator pump in conjunction with a given piston clearance. This… | ||
| 03-page229 | Typed note discussing the operation and design of a P.2. non-expanding carburetter, referencing blueprints. | ||
| View original record | -3- There will be a flow of air into one orifice and out of the other according to the balance of suction set up by the attitude of the throttle which will affect the mixture to some extent, but the… | ||
| 03-page230 | Arrangement of controls for the starting carburetter using a universal joint. | ||
| View original record | X7280 By. from Ds. C. Sg. Hs. Dal/M25.7.30. P.2. CONTROLS FOR STARTING CARBURETTER, ETC. X.7240 X.7280 Your By/CGH7/G18.7.30. has been passed to us by E. and we send herewith N.sch.3137. showing how… | ||
| 03-page231 | Proposal to put the starting carburetter control stop on the dashboard. | ||
| View original record | X 7280. Ey. from Da. c. HS. Da4/M21.8.30. X 7240 X 7280 P.2. STARTING CARBURETTER CONTROL In reply to Ey/CGH8/G15.8.30. we propose to put the stop on the dashboard and will send you a sketch in the… | ||
| 03-page232 | Whether improved car performance is due to drilling an air-valve or advanced ignition timing. | ||
| View original record | COPY. X 7080 R. From PN. c. to Sg. By. HS. PN.3/WT28.7.30. X. 7080 X. 5080. X. 459. Referring to R.5/M.10.7.30. Carburation. I think there is no doubt it will be found any increased acceleration and… | ||
| 03-page233 | Design memo detailing the features of the P.2 Twin Carburetters, page 2. | ||
| View original record | X7080 -2- Hs. ) FROM R. E. Py ) E/CLJ. C.Sk. Wor. RL/M21.8.30. P.2. TWIN CARBURETTERS. After several weeks of careful designing work we are just finishing the designs for the twin carburetter,… | ||
| 03-page234 | Sending of drawings for twin carburetters for the Phantom chassis. | ||
| View original record | Ry. from E. c. Sg. Wor. c. Rg. Hs. X7080 A2/M23.8.30. X.7080. RR. TWIN CARBURETTORS FOR PHANTOM CHASSIS. We are sending you under separate cover 4 drawings giving the remaining information for the… | ||
| 03-page235 | Induction pipe and hot spot for the twin carburetter on a Phantom II. | ||
| View original record | X7080 By. from E. c. Sg. Hs. E2/M/31.8.30. X.7080. PHANTOM II. Herewith please find LeC. 2816. shewing induction pipe and hot spot for the twin carburetter. E. | ||
| 03-page236 | Requesting an estimated timeline for the commencement of testing on new carburetters. | ||
| View original record | HS x7080. To Hs. from Sg. re P.II. Twin Carburetters. Copy to pr. hor. Sg18/E3.9.30 Referring to R1/MP1/3.30 I presume it will be some little time before these new carburetters can be made but I… | ||
| 03-page237 | Providing a timeline estimate for the testing and drawing of Phantom II twin carburetters. | ||
| View original record | To Sg. From Hs. c. to By. c. to Wor. x7080. Hs.3/MJ.5.9.30. PHANTOM 11 TWIN CARBURETTERS. Replying to Sg18/23.9.30. As an approximate estimate it will be eight or ten weeks before we are able to… | ||
| 03-page238 | Revising the delivery time for Phantom II twin carburettors. | ||
| View original record | 87080. To Sg. From Hs. c. to By. c. to Wor. Hs.2/MJ.6.9.30. PHANTOM 11 TWIN CARBURETTERS. After further consideration we think the promise we gave you of eight to ten weeks is too optimistic. A more… | ||
| 03-page239 | Modification of a carburetter with an air maze gauze screen for cars in Australia. | ||
| View original record | BY. FROM E. Copy to SG. Copy to Wor. Copy to Hs. X7080 E1/M9.9.30. AIR FILTERS - Lac. 2803. X.7080. X.4037. Referring to your memo. BY/MTN17/N25830., concerning the question of fitting air filters on… | ||
| 03-page240 | Outstanding issues with the Phantom II Left Hand Chassis following 10,000 miles of testing. | ||
| View original record | COPY. To Sr. F-om Hs. c. to Wor. c. to War. By. x7080- X.7772. X.7941d. X.7250. X.3499 X.7310. X.7480. X.7080. Hsl/AD9.9.30. PHANTOM II LEFT HAND CHASSIS. As a result of running 24-EX 10,000 miles in… | ||
| 03-page241 | Modifications to the clutch, carburettor, and brakes for experimental cars. | ||
| View original record | we can overcome some of the faults with the present clutch by adding extra rivets, this is being done at once. 25-EX will go away with the new type clutch if the modifications now being tested make it… | ||
| 03-page242 | Confirming the completion of design work for twin carburetter controls. | ||
| View original record | X "080 BY. FROM E. E1/M17.9.30. Copy to SG. Copy to HS. CONTROLS FOR TWIN CARBURETTER. We send herewith LeCs. 2822. and 2823. This completes the design work for the above job. E. | ||
| 03-page243 | Modifying car 58-GN's springing and fitting a carburetter with an air silencer, compromising power for reduced engine noise. | ||
| View original record | COPY. x7080. To Sg. From Hs. Hs.2/MJ.13.10.30. c. to WoR. X. 7960. X. 7410. X. 7080. Re. 58-GN. Springing. Replying to Sg21/E10.10.30. We should much prefer to have 58-GN. car at Derby to change the… | ||
| 03-page244 | The finalisation of the Phantom II carburetter air intake design, pending high-speed tests. | ||
| View original record | To BY. From Hs/AJL. x7080. Hs/AJL.2/MJ.13.10.30. PHANTOM 11 CARBURETTER AIR INTAKE. We understand that the P.11 air silencer carturetter is held up pending our final decision. We have carried out a… | ||
| 03-page245 | Tests to determine the necessary degree of silencing for the Phantom II carburettor air intake. | ||
| View original record | To R. From Hs/AJL. c. to SE. Sor. c. to E. Da. c. to EY. 87080 PHANTOM II CARBURETTOR SILENCER. We have carried out a series of tests to determine the degree of silencing necessary on the Phantom II… | ||
| 03-page246 | Alterations to a carburetter and silencer system, detailing the effects on power loss and noise levels. | ||
| View original record | -2- Hs/S.L.1/L.22.10.30.Contd. tube 94%. Two further alterations are carried out, (1) two layers of 20 mesh wire gauze are wrapped round the innermost baffle tube; this does not give any appreciable… | ||
| 03-page247 | The condition of tests comparing lap speeds for various carburettor and air silencer configurations. | ||
| View original record | -3- CONDITION OF TESTS. LAP SPEED M.P.H. Complete Silenced Carburetter. 77.5 Standard Carburetter (off 19-EX.). 78.43 Silenced Carburetter with air silencer off complete. 78.85 Air Silencer with outer… | ||
| 03-page248 | Performance test results comparing an air maze and an air silencer, with speed and acceleration tests on a 19-MX car. | ||
| View original record | -4- He/AL.1/GL.22.10.30.Contd. If the two outer tubes are taken off and replaced by an air maze ( in this case the air valve relief holes are deleted on account of noise), we regain .4 M.P.H. at the… | ||
| 03-page249 | Air silencer tests, comparing different baffle designs and proposing a new standard for Phantom II cars. | ||
| View original record | -5- He/Ah.1/ML.22.10.30.Contd. no loss when accelerating from 10 to 30 M.P.H.; from 30 to 60 M.P.H. there is a loss of only .6 seconds. All results are the mean of three separate tests. The following… | ||
| 03-page250 | Continued document page discussing how three outer baffles stop dust from being drawn into the carburetter. | ||
| View original record | -6- He/AJL.1/AL.22.10.30.Contd. stop what little dust can pass through the three outer baffles from being drawn into the carburetter. He/AJL. | ||
| 03-page251 | Graph comparing the performance (B.HP vs Engine R.P.M.) of standard vs. air silenced carburettors. | ||
| View original record | AIR SILENCED CARBURETTER STANDARD EXHAUST SYSTEM B.H.P. ENGINE R.P.M. STANDARD CARBURETTER:- COMPLETELY SILENCED CARB:- AIR VALVE RELIEF HOLES IN COMPLETELY SILENCED CARB. | ||
| 03-page252 | Blueprint diagram of a Carburetter Air Silencer P.I. showing modifications. | ||
| View original record | CARBURETTER AIR SILENCER P.I. PART OF L.G. 2303 MODIFIED TO SUIT THE AIR SILENCER ON L.G. 2734 8 HOLES .375" DIA EQUALLY SPACED CE - 80237 E-80230 E-80229 E80228 2.875" CARBURETTER To L.G. 2303 LATEST… | ||
| 03-page253 | The standardisation of a silencer for the carburetter on the Phantom II car. | ||
| View original record | [Handwritten]: Hs/Rm [Handwritten]: X7080. To Hs/Rm. from Sg. re Silencer for [Text struck through]: Copy to Wop. EV [Text underlined]: Carburetter. Referring to the above, i.e. the device fitted to… | ||
| 03-page254 | Standardisation arrangement for fitting a carburetter silencer to both home and American chassis. | ||
| View original record | Sg. [crossed out] c. Hon. [crossed out] c. Hs. x7080. BY/Cgh3/G. 29.10.30. RE SILENCER FOR CARBURETTER. --------------------------- With reference to Sg5/L. 29.10.30. a standardisation sheet was… | ||
| 03-page255 | Standardisation of a carburetter silencer for home and American markets. | ||
| View original record | X7080. Hs/Rm To Hs/Rm. from Sg. re Silencer for Carburetter. Referring to the above, i.e. the device fitted to the second L.H. experimental P.II car, would you please let me know whether it is… | ||
| 03-page256 | Proposal to standardise the Air Silencer Carburetter for both English and American use. | ||
| View original record | To Sg. from Hs/Rn. c. Wor. c. By. X7080. Hs/Rm2/M330.10.30. Silencers and Carburetter. With reference to Sg5/E.29.10.30. It is proposed to standardise the Air Silencer Carburetter both for English use… | ||
| 03-page257 | Performance characteristics of a silencer for a carburetter. | ||
| View original record | X7080 To Sg. From Hs/Rn. c. to Hor. c. to Hy. Hs/Rn.1/MJ.31.10.30. Re. Silencer for Carburetter. ------------- With reference to Sg5/E29.10.30. We have signatures for everyone except yourself for the… | ||
| 03-page258 | Alterations and tests on starting carburetters with fixed maximum restriction. | ||
| View original record | To R. From Hs/AJL. c. to SE. Wor. c. to Da. E. c. to BY. STARTING CARBURETTERS WITH FIXED MAXIMUM RESTRICTION. In hs/AJL.1/MJ.14.5.30. we asked for an alteration in design to the fixed maximum… | ||
| 03-page259 | Avoidance of a new design in favour of modifying the existing starter carburetter. | ||
| View original record | To BY. From Hs/Rm. c. to WGR. x7=80. Hs/Rm.1/MJ.21.11.30. With reference to Hs/AJL.3/MJ.21.11.30. We have been trying to avoid the application of the design LEC.2731 which R. has been agitating for… | ||
| 03-page260 | Update on the testing of Phantom II Twin Carburetters. | ||
| View original record | x7080. S/W To Hs/Rm. from Sg. re Phantom II Twin Carburetters. Sg15/E8.12.30 Referring to Hs.2/MJ.6.9.30, would you please let me know how this matter now stands? I rather think, when I was at Derby… | ||
| 03-page261 | Thermostat settings, carburation issues, and silencer design for the 25HP and 45HP models. | ||
| View original record | X7080 HS. FROM R. R4/M11.12.30. C. to SG. WOR. C. to BY. FN. CAR WORK - 25HP. AND 45HP. X.3499. THERMOSTATICALLY CONTROLLED SHUTTERS. X.7080. X.5080. The figures shew that in hard running there will… | ||
| 03-page262 | Note regarding a delay in testing twin carburetters for the Phantom II. | ||
| View original record | Sg. from Hs/Rn. x7080. Hs/Rn2/ADL12.12.30. TWIN CARBURATTERS - PHANTOM II With reference to your note re. the twin carburetters for the Phantom II. We held up the job for a little while because we… | ||
| 03-page263 | Request to supply spare slow running jets for a Phantom Twin Carburetter for experimental work. | ||
| View original record | X7080. RHC. From Hs/ACL. Hs/ACL.1/MJ.16.12.30. PHANTOM TWIN CARBURETTER Will you please supply the spare slow running jets we have shewn on appended print, for experimental work on this carburetter.… | ||
| 03-page264 | Urgent request for a new scheme for a reserve tank on a 40/50 HP chassis due to a new petrol pump and twin carburetter combination. | ||
| View original record | c. Hs/Rm. c. Dy/GS. X7080. BY30/G.19.12.30. x7080. x 7080 40/50 HP. CHASSIS - NEW PETROL PUMP AND TWIN CARBURETTER COMBINATION. On LeC.2806 a pipe is shown going to a reserve tank. The present Autovac… | ||
| 03-page265 | Issue of noise from twin carburetters and proposing a solution using the crankcase as a silencer. | ||
| View original record | To A.F. From He/Wm. C. to DB. [strikethrough] cy to EV. [strikethrough] 87080 Hs/Rs.1/W.20.12.30. X.7080. X.5080. CARBURETTER NOISES. We now have the twin carburetters running. Naturally, in view of… | ||
| 03-page266 | The preliminary tests of a new twin-choke carburettor for the Phantom II. | ||
| View original record | To R. From Hs/ACL. c. to Sr. Wor. c. to E. Da. c. to Hy. 87080. Hs/ACL.1/MJ.24.12.30. TWIN CHOKE CARBURETTER FOR PHANTOM II. We have made some preliminary tests with the new twin choke carburetter on… | ||
| 03-page267 | Advantages of drawing air through the crankcase and the use of a honeycomb flame damper. | ||
| View original record | -2- Hs/ACL.1/AL.24.12.30.Cont of the advantage we have obtained over the standard carburetter. Drawing the air through the crankcase appears to possess several advantages. A flame damper would be… | ||
| 03-page268 | Twin type carburettor design, including intake from the crankchamber, draining, and air metering. | ||
| View original record | X7080 E. HS. ) FROM R. BY. ) (At Le Canadel.) R4/M26.12.30. C. to SG. WOR. CAR WORK - CARBURETTERS. C. to PN. TWIN TYPE. ---------------- I agree to trying intake into crankchamber. My fear is that… | ||
| 03-page269 | Instruction to produce a new carburetter valve seating for the Phantom 11 to prolong its life and prevent flooding. | ||
| View original record | To. RHC c. Hs/Mr.Hancock. X7080 BY/CS1/IG.27.1.31. PHANTOM 11 - CARBURETTER - SEC: 5080. Please receive herewith blueprint of the following drawing:- E.82042 Valve Seating which replaces E.70397. Will… | ||
| 03-page270 | Tests and corrections made on Phantom II twin choke carburettors. | ||
| View original record | To R. From Hs/LoV. c. to Ss. Hor. c. to E. Da. c. to Ey. PHANTOM II TWIN CHOKE CARBURETTERS. Tests have been continued on the twin choke carburetters and we have corrected some of the troubles… | ||
| 03-page271 | Progress report on the development and testing of an aero-based downdraught carburetter scheme. | ||
| View original record | -2- Hs/Inv.1/AL.27.1.31. can with our aero carburetter scheme. Our aero carburetter scheme of variable position discharge orifice in relation to throttle edge is very good and we have applied it to… | ||
| 03-page272 | Modifications to the Phantom 11 twin choke carburetter. | ||
| View original record | To RHC. From Hs/ACL. K7080 Hs/ACL.1/MJ.27.2.31. PHANTOM 11 TWIN CHOKE CARBURETTER. We herewith append a list of modifications which we have made to the first twin choke carburetter. If you are… | ||
| 03-page273 | Performance comparison graph of twin carburettors versus a standard carburettor system. | ||
| View original record | TWIN R.R. CARBS AND INDUCTION SYSTEM COMPARISON WITH STANDARD R1 CARBURETTOR AND INDUCTION SYSTEM TEST BED EXHAUST SYSTEM V1023 BHP RPM BMEP TWIN CARBS 1.35 DIA CHOKES TWIN CARBS 1.25 DIA CHOKES… | ||
| 03-page274 | Single versus double carburetter configurations for 6-cylinder engines and their potential effects on performance. | ||
| View original record | HS. E.) FROM R. BY. ) (At Le Canadel.) X7080 R2/M.2.31. Copy to - SG. Copy to - WOR. CARBURETTERS - 6 CYL. ENGINES. X.7080 Copy to - RG. X.5080. I understood that we must use double carburetters if we… | ||
| 03-page275 | Tests of a downdraught carburettor on a Phantom II, detailing issues with distribution. | ||
| View original record | To R. From Hs/Lov. c. to SE. c. to Dr. R. c. to Da. By. 7080 Hs/Lov./6/RT.26.2.31. DOWNDRAUGHT CARBURRETTER ON PHANTOM II. We have carried out several tests with the Downdraught Carburetter on Phantom… | ||
| 03-page276 | Comparing downdraught and SU carburettors, focusing on distribution and proposing tests for induction heating. | ||
| View original record | - 2 - Hs/Lov.6/KT.26.2.31.Cont. Appended is a power curve comparing the Downdraught and SU. carb. We think the power may be improved when we get better distribution. In looking at these power curves… | ||
| 03-page277 | Performance graph comparing Downdraught and Standard carburettors on a Phantom II engine with a 5/1 compression ratio head and open exhaust. | ||
| View original record | COMPARISON OF DOWNDRAUGHT & STD. CARBURETTERS, ON PHANTOM II FITTED WITH 5/1 COMPn RATIO HEAD, OPEN EXHAUST, C/B.H.P., DOWNDRAUGHT CARB, STD. CARB, B.H.P., B.M.E.P, DOWNDRAUGHT, STD, R.P.M., B.M.E.P.… | ||
| 03-page278 | List of modifications for the Phantom twin-choke carburetter. | ||
| View original record | (1) The following are a list of Modifications up to date on the Phantom twin-choke carburetter Leo. 2810, 2811, 2812 & 2813. (1) Variable valve sleeves to V.1059 now having 3 - .066 dia. holes. (2)… | ||
| 03-page279 | List of modifications and settings for carburetter components. | ||
| View original record | (2) (16) Slow running plugs to V.1030. (17) Scheme for location of slow running plugs to V.1058. (18) Drilling of E.81437 to accomodate slow running plugs. It is important that these two holes should… | ||
| 03-page280 | Blueprint showing a cross-section of a valve seating component. | ||
| View original record | V1004 VALVE SEATING 4° .138 DIA. FOR OTHER DIMENSIONS SEE (ER1552) Y.W.A 20.12.72 | ||
| 03-page281 | Blueprint detailing a modification to a sleeve for a variable valve on a twin choke carburettor. | ||
| View original record | V1059 .100 CRS 3 HOLES EQUALLY SPACED DRILL .066 DIA. FOR ALL OTHER DIMENSIONS SEE E 81748. MODn. TO SLEEVE (VARIABLE VALVE) TWIN CHOKE CARB. P.O L4.C 26.2.31 | ||
| 03-page282 | Blueprint for a modification to a diffuser body for a Twin Choke Carburettor PII. | ||
| View original record | V1057 FOR ALL OTHER DIMENSIONS SEE E.81572 .500 DIA. -.475 +/- .01 .250. +.25 DEPTH OF FINE LIMIT BORE MODIFICATION TO DIFFUSER BODY TWIN CHOKE CARB PII | ||
| 03-page283 | Blueprint showing modifications to a pedestal, including two views and some dimensions. | ||
| View original record | V.1061., Vulture? (faint), MODIFICATION TO PEDESTAL, .025, .010, FOR OTHER DIMENSIONS, SEE (E 21897), H.C.P., 4.2.20 | ||
| 03-page284 | Blueprint detailing a modification to a diffuser outer tube. | ||
| View original record | V.1060. 6. HOLES DRILL .055 EQUALLY SPACED FOR OTHER DIMENSIONS SEE E.81573. MODIFICATION TO DIFFUSER (OUTER TUBE) | ||
| 03-page285 | Control scheme for an accelerator pump connection with the throttle spindle for twin carburettors. | ||
| View original record | V1031 THROTTLE SPINDLE COVER & RISER TO BE FITTED THIS END .850 Crs ±.5 2.000 Crs ±.5 ADJUSTABLE LENGTH CONTROL SCHEME FOR ACCEL. PUMP CONNEXION WITH THROTTLE SPINDLE (V1032) TWIN-CARBS (PII) | ||
| 03-page286 | Blueprint drawing of a slow running plug (F.1.). | ||
| View original record | V1030, .313 DIA, DRILL .075 DIA, ANNULAR RING, .050 RADIUS, .250 +/- 5, .025 THICK, .300 DIA +/- 2, .375 DIA +/- 2, .150 +/- 2, 1.015 +2, 1.065 -2, .170 +/- 5, MAT : BRASS, SLOW RUNNING PLUG (F.1.),… | ||
| 03-page287 | Schematic diagram for a slow running system of a twin-choke carburetor, detailing an adjusting screw. | ||
| View original record | V1058 ADJUSTING SCREW TO BE FIXED TIGHT WITH GUIDE & SPRING IN POSITION SLOW RUNNING SCHEME (Twin Choke Carb.) PI 6.4.36 | ||
| 03-page288 | Blueprint for a machined part with drilling, reaming, spotfacing, and tapping instructions. | ||
| View original record | V1010 TO BE JIG DRILLED DRILL & REAM 2 HOLES B.312 DIA .990 ±2 SPOTFACE TO ABOVE DIMENSION .898 TAP & PLUG 2 HOLES SHOWN FOR OTHER DIMENSIONS SEE E 81437 SECTION D.D. MODIFICATION SLOW RUNNING P II A… | ||
| 03-page289 | Blueprint showing a cross-section and dimensions for a Tappet Spindle (Twin Series B). | ||
| View original record | For Other Dimensions See (E.20A.) TAPPET SPINDLE (TWIN SERIES B.) 1.600 +2 1.600 +2 1.000 +5 1.700 +5 .250 +1 .248 +1 V1032 [Faint, top left] 3.1.28 | ||
| 03-page290 | Blueprint showing a modification to a sleeve for a slow running jet. | ||
| View original record | V. 1056. SCALE 1/1 .171 DIA. SCALE 2/1 MODIFICATION TO SLEEVE (SLOW RUNNING JET) 2 off G.L. C.W.H. 25.2.30 | ||
| 03-page291 | Cross-section diagram showing the modification of passage sizes from a float-chamber to variable valves. | ||
| View original record | V1005 2 HOLES DRILL .213 DIA TAP 26 TPI RH FOR OTHER DIMENSIONS SEE (ER1436) SECTION EE MODIFICATION OF SIZE OF PASSAGES FROM FLOAT-CHAMBER TO VARIABLE VALVES | ||
| 03-page292 | Drawing of an atmospheric release to float chambers and petrol feed to an accelerating pump well. | ||
| View original record | V.1055. ATMOSPHERIC RELEASE TO FLOAT CHAMBERS & PETROL FEED TO ACCELERATING PUMP WELL 2 HOLES DRILL .105 DIA. 9/64" 120° 47° A 1 HOLE DRILL .1719 DIA EXISTING HOLE TO BE SCREWED AND PLUGGED AND HOLE… | ||
| 03-page293 | Drawing of a modified carburetter throttle for a PII model. | ||
| View original record | V1019, SEE DRAWING FOR CLEARANCE, 1.599 DIA, -1, 23¼°, ±¼°, 90°, .125, RAD, 2 SLOTS, .225, +.010, 1.000 CRS, ±.001, THESE FACES CLEANED TO A MINIMUM THICKNESS OF .125 IF NECESSARY, SCALE 1/1, TO HAVE… | ||
| 03-page294 | Blueprint of a carburetter choke. | ||
| View original record | V1022 .125 RAD .075 RAD .412 RAD .062 8.°48' 1.300 DIA. +.5 1.700 DIA. -.5 SCALE 8/1 FOR OTHER DIMENSIONS SEE E.B/598 CHOKE (CARBURETTER) A P II 2 OFF 15.3.31 | ||
| 03-page295 | Experimental modifications to the Phantom downdraught carburetter. | ||
| View original record | To RHC. From Hs/ACL. X7 080. Hs/ACL.3/MJ.5.3.31. DOWNDRAUGHT CARBURETTER. We wish to make some experimental modifications to the Phantom downdraught carburetter. These modifications consist of making… | ||
| 03-page296 | Request to supply restrictor jets and jet needles for Phantom carburetters. | ||
| View original record | To RHC. From Hs/Lov. 87080 Hs/Lov.1/MJ.10.3.31. PHANTOM CARBURETTERS. Will you please supply four sets of restrictor jets as shewn on V.1079 for use on the twin choke carburetter. Also will you please… | ||
| 03-page297 | Specification table detailing the dimensions for jet needles for a downdraught carburetter. | ||
| View original record | DOWNDRAUGHT CARBURETTER. Dimensions for Jet Needles Required. Dia. Large End Taper. .148 .148 .148 .153 .153 .153 Dia. Small End Taper. .093 .098 .103 .093 .098 .103 Included Angle of Taper for these… | ||
| 03-page298 | The performance issues of a twin carburetter under various driving conditions. | ||
| View original record | To Hs. From Hs/GWH. *7080 HS/GWH.1/KT.13.3.31. R.R. TWIN CARBURETTER. 22-EX. With the present settings of the carburetter, slow running stationary is very good and even. On the road a steady 6 M.P.H.… | ||
| 03-page299 | Inadequate carburetter silencer, requesting new versions V.1083 and V.1082 be made for car 27-EX. | ||
| View original record | To RHC. From Hs/Rm. V7080. Hs/Rm.2/MJ.17.3.31. TWIN CARBURETTER AIR SILENCER SCHEME. The silencer on this carburetter is quite inadequate. We shall have to make some alteration before 27-EX. goes… | ||
| 03-page300 | Request to manufacture diffuser parts for Phantom Twin carburettors. | ||
| View original record | 87080. To RHC. From Hs/Lov. Hs/Lov.8/MJ.20.3.31. PHANTOM TWIN CARBURETTERS. Will you please make for us the diffuser parts shown on the appended prints. Hs/A.C.Lovesey. Att: V.1086/7/8. | ||
| 03-page301 | Proposal for an improved induction pipe for the P. 2 down draught carburetter to improve fuel distribution. | ||
| View original record | BY. FROM E. C. to SG. WOR. C. to HS. BY. X7080 E1/2.4.31. P. 2. DOWN DRAUGHT CARBURETTER. No useful experimental work can be done on the down draught carburetter until it is fitted with an improved… | ||
| 03-page302 | Experiments to improve fuel distribution with a downdraught carburetter. | ||
| View original record | To R. From Hs/Lov. c. to Sg. Mor. c. to E. Da. c. to By. X7080 Hs/Lov.1/KT.2.4.31. X7080. x5080. DISTRIBUTION WITH DOWNDRAUGHT CARBURETTER ----------------------- As previously reported the… | ||
| 03-page303 | Road tests of a Phantom II twin-choke carburettor. | ||
| View original record | To R. From Hs/Lov. c. to Sg. Mor. c. to E. Da. c. to Hy. 8080. Hs/Lov.2/MT.2.4.31. PHANTOM II TWIN CHOKE CARBURETTER TESTS ON CAR. We have now had some road tests with the twin choke carburetter with… | ||
| 03-page304 | Carburettor metering, fuel starvation during turns, and performance test results. | ||
| View original record | (2) Hs/Lov.2/RT.2.4.31.cont. With regard to the metering we found on the road that it showed a rich characteristic just above the change over position at full throttle and reached a normal mixture… | ||
| 03-page305 | Progress report on carburettor testing and development, covering noise, performance, and fuel consumption. | ||
| View original record | (3) Slow running and snap opening up are very good. A silencer is needed to bring it to the same degree of quietness as the std. carburetter, but in its present form it is not unduly noisy. It would… | ||
| 03-page306 | Development of double carburetters, addressing issues of uneven flow, slow filling, and cornering. | ||
| View original record | X7080 E. HS/LOV. ) FROM R. (AT Le canadel.) R2/M9.4.31. Copy to - SG. WOR. CAR CARBURETTERS. X.7080. X.5080. Mr. Lovesey seems to be getting on well with double carburetters. We are glad to hear that… | ||
| 03-page307 | Investigation into carburetter flooding and fuel starvation issues on the Phantom II during sharp turns. | ||
| View original record | To R. From Hs/Lov. c. to SG. Nor. c. to E. Da. c. to EV. PHANTOM II. TWIN CHOKE CARBURETTERS. We pointed out in a previous report that we had experienced trouble with flooding when making sharp or… | ||
| 03-page308 | Carburetor float issues during turns in the R. engine and Phantom II. | ||
| View original record | - 2 - Not quite the same on the R. engine because in a machine of this type - the S.6.- flat turns are seldom intentionally made, but in the car the turns are always flat. The main condition where it… | ||
| 03-page309 | Diagram illustrating a float chamber issue in a Phantom II Twin Choke Carburetter at a 14-degree inclination. | ||
| View original record | P.II. TWIN CHOKE CARBURETTER DIAGM. SHEWING THAT IF INCLINATION EXCEEDS ABOUT 14° THERE IS NO RESERVE BUOYANCY OF FLOAT IN THE MOST FILLED FLOAT CHAMBER AND FLOATS THEREFORE DROP AS FUEL RECEIVES FROM… | ||
| 03-page310 | The petrol level performance of a P.2 twin choke carburetter, comparing present and modified designs. | ||
| View original record | R. from E. c. Sg. Wor. c. Hs. Bv. X7080 E1/M21.4.31 P.2. TWIN CHOKE CARBURETTERS. X.7080 Referring to Hs/Lov3/KT17.4.31, the slope obtained on the petrol level when turning under normal conditions is… | ||
| 03-page311 | Fuel supply of low and high-speed jets and the design of the float chamber lid joint. | ||
| View original record | E1/M21.4.31. contd. -2- The low speed jet gets its fuel supply from the high speed jet and will therefore be subject to the conditions of supply of the latter. The low speed jet will also experience a… | ||
| 03-page312 | Alterations to the P.2. carburetter to prevent cutting out and advocating for the in-house development of double carburetters. | ||
| View original record | X7080 Hs. } FROM R. EV. } c. Sg. Wcr. E. R2/M4.5.31. DOUBLE CARBURETTER P.2. AND J.1. X.7080 X.5080. The alterations to P.2. to prevent the cutting out effect and flooding at the corners has been… | ||
| 03-page313 | Adjustments and a proposed final design for P. 2. twin carburetters. | ||
| View original record | HS/LOV. FROM E. X7080 E1/MS.5.31. 6 Copy to - BY. P. 2. TWIN CARBURETTERS. We understand you to say that you had cancelled the slow running adjusting screws and replaced them by an eccentric hole… | ||
| 03-page314 | Drawings for a modified twin carburetter and hot spot piping. | ||
| View original record | BY. FROM E. K9080. EL/112.5.31. C. to SG. MOR. C. to HS. HY. | ||
| 03-page315 | The slow running scheme and modifications for twin choke carburettors. | ||
| View original record | To R. from Hs/Lov. c. Sg. c. Wor. E. c. Da. Ry. r7080. Hs/Lovl/AHS.5.5.31. X1053. P.2. TWIN CHOKE CARBURETTARS. The slow running scheme we have employed on the twin choke carburetter fitted to 27-EX… | ||
| 03-page316 | Carburetter performance, detailing issues with idling mixture and comparing different metering schemes. | ||
| View original record | -2- Now closing the throttles down to the slowest idling speed it was found the adjusting screw opposite the club foot (No.2 on diagram) had to be fairly well opened. The quality of the mixture could… | ||
| 03-page317 | Description of the slow running scheme, easy starting scheme, and accelerator pump for a Zenith 36 D.U.P. double choke carburetter. | ||
| View original record | Hs/Lovl/AM15.5.31 contd. -3- Zenith slow running Scheme. We have just examined one of the latest double choke Zenith carburetters (36 D.U.P.) which has one or two interesting features. The slow… | ||
| 03-page318 | Carburettor components including the accelerator pump, slow running unit, and Zenith float. | ||
| View original record | Hs/Lovl/AHS.5.31 contd. -4- The piston is a working fit in the cylinder and the fuel replenishment obtained past a little loose disc valve attached to the base of the piston. The accelerating fuel is… | ||
| 03-page319 | Diagram of a Phantom II Twin Choke Carburetor indicating adjustment points. | ||
| View original record | P.II TWIN CHOKE CARB. No. 1. ADJ SCREW Club Foot. No. 2. ADJ SCREW. CWB/ 3 | ||
| 03-page320 | Blueprint detailing a modification for slow running on Phantom II twin choke carburettors. | ||
| View original record | MODIFICATION TO SLOW RUNNING ON TWIN CHOKE P.II CARBS ECCENTRIC DISCHARGE HOLE IN ROTATING BRASS PLUG SCREW HEAD FOR ROTATING BRASS PLUG TO ADJUST TICK OVER MIXTURE THESE PASSAGES BLANKED EXPERIMENTAL… | ||
| 03-page321 | Schematic diagram of a Zenith slow running system. | ||
| View original record | ZENITH SLOW RUNNING SCH THROTTLE EDGE TOP DISCHARGE HOLE FOUR AIR HOLES DRILLED DOWN TO INTAKE SMALL DISCHARGE HOLE ABOVE THROTTLE DISCHARGE HOLE WITH MOVEABLE RESTRICTIONS UNCOVERED WHEN THROTTLE IS… | ||
| 03-page322 | High-speed engine experiments, discussing performance, carburettors, component layout, and vibration mitigation. | ||
| View original record | Hs. from R. c. Sg. c. WOr. c. Ev. X7080 R5/M28.5.31. HIGH SPEED EXPERIMENTS. X.7771 X.7080 X.7005. We are pleased to hear that you are getting on well with the power of P.2. at high speeds and maximum… | ||
| 03-page323 | Analysis of different carburetter arrangements and their performance results for the Phantom II and 25 HP models. | ||
| View original record | To E. from Hs/Rm. 87080 Hs/Rm11/AD7.7.31. CARBURETTER ARRANGEMENTS. P.II. AND 25 HP. x8080 Further to our 'phone conversation, herewith a curve shewing some results. We used the 114 R. shaft as it… | ||
| 03-page324 | Engine performance, ramming, carburation, and cylinder head design. | ||
| View original record | -2- Superficially one would say that we shall then get better low speed M.E.P. than with the carbs. close to the engine and nearly the same top H.P. Summarising the results, it would seem that there… | ||
| 03-page325 | Progress report on engine development, comparing different designs ('Japan' and 'China') and discussing ongoing experiments. | ||
| View original record | -3- does not give us more power and we believe possibly less, due to the cramped arrangement of the valves, but we are proving this out. It is heavier due to its greater height and also awkward for… | ||
| 03-page326 | Performance graph comparing various carburettor arrangements on a Phantom II engine with an aluminium head. | ||
| View original record | Hs 411 COMPARISON OF VARIOUS CARB. ARRANGEMENTS P II 4.9 C/R ALUM HEAD ① TWO S.U'S PIPE ABOVE ② AS ① BUT PIPES JOINED TOGETHER CENTRALLY WITH THROUGH BORE ③ TWIN RR CARB 1.4 DIA CHOKES ④ SINGLE… | ||
| 03-page327 | Twin carburetter options and a new universal pipe design for Phantom & Japan models. | ||
| View original record | HS. FROM R. C. to SG. WCR. BY. X4080 R4/M8.7.31. (SENT OFF 11.7.31.) X.7080 X.5980 PHANTOM & JAPAN TWIN CARBURETTERS. With reference to the single carburetters we have already sent you for Japan,… | ||
| 03-page328 | Experiments comparing different carburetter arrangements for a car engine. | ||
| View original record | 87080 To R. From Ha/Rm. c. to Sg. Wor. c. to Da. E. c. to By. Ha/Rm.6/WJ.11.7.31. 85080. We have been conducting various experiments on the positioning of carburetters with a view to determining the… | ||
| 03-page329 | Various carburettor arrangements, including Claudel and Zenith types, and their performance on the 40/50 model. | ||
| View original record | -2- Ha/Bm.6/W.11.7.31.Cont'd. Arrangement (4) - Does not seem to have any particular merit as it eliminates ramming completely and whilst producing no more top HP. gives a very poor low speed M.E.P.… | ||
| 03-page330 | Technical note on the characteristics and slow running of S.U. carburettors. | ||
| View original record | -3- Ha/Rm.6/W.11.7.31.Cont'd. S.U.CARBURETTERS. The S.U's. in spite of being a fixed jet carburetter, seem to break up the fuel stream very well. This of course is a feature of the expanding… | ||
| 03-page331 | Performance comparison graph of various carburettor arrangements for a Phantom II engine with an aluminium head. | ||
| View original record | SHEET II Hs 411 COMPARISON OF VARIOUS CARB. ARRANGEMENTS P II 4.9 C/R ALUM HEAD ① TWO S.U'S PIPE ABOVE ② AS ① BUT PIPES JOINED TOGETHER CENTRALLY WITH THROUGH BORE ③ TWIN RR CARB 1.4 DIA CHOKES ④… | ||
| 03-page332 | Performance comparison graph for different carburettor arrangements on a 25 HP engine. | ||
| View original record | SHEET I HS. 413. COMPARISON OF CARBURETTER ARRANGEMENTS FOR 25 HP JAPAN UNIT IV. G.8. 5.45 C/R OPEN EXHAUST No I TWO CLAUDELS. MM CHOKES. 25 INDUCTION AS SHOWN No II TWO. 36. VI. ZENITH. CHOKES 25… | ||
| 03-page333 | Pros and cons of different carburetter arrangements for a 6-cylinder car. | ||
| View original record | HS. FROM R. RL/13.7.31. C. to SG. WOR. C. to BY. E. CARBURETTERS. X.7080 X.5080 X7080 On the subject of car carburetters we appear to have several different opinions, so I am trying to clear it up as… | ||
| 03-page334 | The development and performance of an air intake silencer for a Phantom II twin choke carburetter. | ||
| View original record | To H. from Hs/Lid. c. Sg. Wcr. c. E. Da. Wy. 87080 Hs/Lid/ATL2.8.31. P.II. TWIN CHOKE CARBURETTER. AIR INTAKE SILENCER. We attach particulars of an air intake silencer which we have evolved for the… | ||
| 03-page335 | Blueprint for a Phantom II twin carburettor air silencer. | ||
| View original record | PHAN. II TWIN CARB. AIR SILENCER., SILENCER TO BE MADE OF 22 S.W.G. (.028), BONNET, 4 LOCATING TABS, 8.675, .96, .546, .5, 6.5, 7.2, 6'', 4.75'', 3'', 2 1/2, 19 AUG. 32, T3 1124 C2 | ||
| 03-page336 | Reluctance to change the existing carburetter and the need for personal testing of any new specimen. | ||
| View original record | X7080 HS. FROM R. R3/M20.8.31. C..to SG. WOR. BY. re. CARBURETTERS. X. 7080 X. 5080. You will realise that we have been going extremely well with out old carburetter - for our type of car - for a… | ||
| 03-page337 | Outlining the requirements and design considerations for twin and 25HP carburetters. | ||
| View original record | HS. FROM R. X7080 R2/M25.8.31. C. to SG. WOR. P.2. CARBURETTERS X.7080. Ct to BY. HS/LOV. X.5080. THE TWIN CARBURETTER WHICH YOU HAVE. This has been corrected; what is the best it will do? 25HP.… | ||
| 03-page338 | Exhaust heating and carburation requirements for cold climates like the USA. | ||
| View original record | -2- (12) Again we understand that for USA, and other very cold winter climates we must have good cold distribution - rapid heating by exhaust. Our requirements would not be met by S.U. or Bentley… | ||
| 03-page339 | The decision not to proceed with the production of an induction pipe for a down-draught carburetter. | ||
| View original record | c. Hs. r7080. BY.3./G.31.8.31. WEST WITTERING CALL AUGUST 27TH. RE LeC. 2895 - INDUCTION PIPE FOR DOWN-DRAUGHT CARBURETTER. --------------------------------------------------------------- Just after… | ||
| 03-page340 | List of modifications for Phantom ll twin carburetters. | ||
| View original record | Y7080. To RHC. From Hs. Hs.2/MJ.3.9.31. List of modifications for Phantom ll twin carburetters. (1) Variable valve sleeve E.82375 to have 3.066 diam. holes. (2) Diffuser body E.81572 to V.1057… | ||
| 03-page341 | Tests of twin carburetters for the Phantom II, specifically modifying the float design to prevent flooding. | ||
| View original record | To R. from Hs/Swn. c. Sg. Wor. c. E. Da. c. W. x7080. Hs/Swn.1/A1R 7.9.31. TESTS OF R.R. TWIN CARBURATTERS FOR PHANTOM II. MODIFIED TO Lec. 2905/6. The main modification to the twin carburetters has… | ||
| 03-page342 | Carburetter adjustments and design modifications for improving slow running performance. | ||
| View original record | Hs/Swn.1/AM 7.9.31 contd. -2- Slow Running. The double slow running feed gives good results over the idling range when correctly adjusted i.e. .025 jet, the front adjustment unscrewed 1 1/4 turns and… | ||
| 03-page343 | Modifications to variable valves and diffusers to improve mixture range, metering, and power. | ||
| View original record | Hs/Swn.1/AD17.9.31 contd. -3- Variable valves and diffusers. By making the feed holes in the variable valve sleeves (.066 dia. and three in number) we can with the existing variable valves obtain a… | ||
| 03-page344 | Schematic drawing of a slow running scheme for a twin choke carburettor. | ||
| View original record | V1058 ADJUSTING SCREW TO BE FIXED TIGHT WITH GUIDE & SPRING IN POSITION. SLOW RUNNING SCHEME (TWIN CHOKE CARB.) PI C.M.P. 24-2-31 | ||
| 03-page345 | Suggesting a modification to the twin choke carburetter on the P.2. to overcome a difficulty with the petrol level. | ||
| View original record | To Ry. from Hs/Rm. c. E. X7080. Hs/Rm.1/AM9.9.31. TWIN CHOKE CARBURETTERS. E. suggested on the telephone call yesterday that the best way to overcome our difficulty with the twin choke carburetter on… | ||
| 03-page346 | Technical note regarding an issue with the float weight in twin carburettors. | ||
| View original record | X7080. R3/M24.9.31. HS. ) FROM R. RE HS/ACL. ) BY ...) C. to SG. WOR. P. 2. TWIN CARBURETTERS. 1931 SEP The trouble at the moment is that in altering the float to complete circles (i.e. non-cut away)… | ||
| 03-page347 | Trials, development, and comparison of various carburettor designs. | ||
| View original record | COPY. X7080 HS. } FROM R. BY. } RA/M28.9.31. X7080 X5080 C. to SG. WOR. E. CARBURATION. After considerable trials and experiments with double carburetters with fixed throats, it has been agreed that… | ||
| 03-page348 | Challenges and requirements for fitting a large S.U. carburetter to a Phantom II. | ||
| View original record | RHC. from Hs/Rm. x7080. Hs/Rm.5/AD5.10.31. LARGE S.U. CARBURETTER FOR THE PHANTOM II. y487 We have received a print from the S.U. Co. of a carburetter they are making for us which is the right size… | ||
| 03-page349 | Effects of different choke sizes on a Phantom II single carburetter. | ||
| View original record | To R. from Hs/Rm. c. Sg. Wer. c. Da. E. c. Iv. x7080. Hs/Rm.3/AD9.10.31. x3603. We send herewith curves indicating the effect of various choke sizes used in a single carburetter on the Phantom II. The… | ||
| 03-page350 | Graph showing Brake Horsepower and Depression curves from experiments with various choke sizes on a Half Solex twin carburetter. | ||
| View original record | DEPRESSION WITH VARIOUS CHOKE SIZES PH. II EXPERIMENTS USING HALF SOLEX R.M. P.29 TWIN CARBURETTER 1.6 DIA. THROTTLE DIFFUSER DIA. P DENOTES B.H.P. CURVE D DENOTES DEPRESSION CURVE B.H.P. R.P.M. DEPN.… | ||
| 03-page351 | Modifications to the float mechanism for P.2 Twin Choke Carburetters. | ||
| View original record | COPY. X7080. BY. FROM E. C. to SG. WOR. HS. E1/18.10.31. X7080 P. 2. TWIN CHOKE CARBURETTERS. We send you herewith LeCs. 2960. and 2962., shewing the modifications required to the above for… | ||
| 03-page352 | Graph of engine BHP and induction depression versus RPM, comparing performance with two different carburetter choke sizes. | ||
| View original record | DEPRESSION WITH VARIOUS CHOKE SIZES. P1 STANDARD CAMSHAFT VALVE LIFT .480 TABLE DATA: CARBURETTER | CHOKE DIA. | DIFFUSER AREA | FREE AREA THROUGH CHOKE | THROTTLE | BARREL R.R.C.H. A | 1.40 | .28 SQ… | ||
| 03-page353 | Comparing the specifications of a Claudel carburetter with the performance of an S.U. carburetter on a different engine. | ||
| View original record | To E. from Hs/Rm. X7080. Hs/Rm.1/AD10.10.31. With reference to your query as to the size of the Claudel carburetter which we use on the P.2. to obtain maximum B.H.P. We find that this carburetter is… | ||
| 03-page354 | Power output difference between balanced and unbalanced twin carburettors, referencing curve Rm.P30. | ||
| View original record | To R. from Hs/Rm. c. SG. Nor. C. Dr. H. By. x7080. Hs/Rm.2/ADL.2.10.31. BALANCED TWIN CARBURETTERS. x7090 We send you herewith curve Rm.P30 showing the difference in power output of the twin… | ||
| 03-page355 | Blueprint graph comparing the power output of balanced versus unbalanced twin carburettors. | ||
| View original record | RM. P 30 COMPARISON OF POWER OUTPUT BALANCED & UNBALANCED TWIN CARBS STANDARD CAMSHAFT VALVE LIFT .460 STANDARD HEAD 4.78 C.R TWIN CARBS 1.4 CHOKES Circular Diagram Text: Ex IN SI 7.5 55 .013 Clce… | ||
| 03-page356 | Spring control for a 25 HP starter carburetter and potential modifications for 20/25 and 40/50 models. | ||
| View original record | COPY. To Hs. from Sg. Copy to PN. Wor. BY. Cx. X7280 re Spring Control for Sg12/E15.10.31. 25 HP. Starter Carburetter. I am in receipt of Hs.3/MJ.14.10.31. X.5280 I quite appreciate the point you… | ||
| 03-page357 | Instructions for modifications to the Twin Choke Carburetter designs LeC's 2960 and 2962. | ||
| View original record | L. Swindall. Please note & return To. By/Ogh. c. Hs/Rm. X7080 BY/SS2/N.30.10.31. RECEIVED 31 OCT 1931 P.2. Twin Choke Carburetter - LeC's 2960 and 2962. Before completing our instructions for the… | ||
| 03-page358 | Continued memo detailing modifications to a slow-speed jet and petrol passages. | ||
| View original record | -2- ----- BY/SS2/N.30.10.31 Cont'd. ------------------------- 5. Experimental Dept. would like us to look into the passage formed by the slow speed jet E.81723 and its sleeve E.82365 so that more even… | ||
| 03-page359 | Development of a new single carburettor design to replace the S.U. pattern. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. x7080 R2/119.11.31. X1487 X7080 X8080 CARBURETTERS. We want to depart from the very common S.U. pattern for various reasons. Amongst others the reputation of this… | ||
| 03-page360 | Extract from a memo discussing the design and selection of carburettors for car work. | ||
| View original record | EXTRACT FROM: x7080. Hs. ) FROM R. By. ) C. to SG. WOR. CAR DESIGN WORK. CARBURETTER. R.2/M.10.11.31. X5080 X7080 X1487 We are now all agreed that the single carburetter is the best for our work, and… | ||
| 03-page361 | Advance print for an expanding updraught single choke carburetter for the continental Phantom. | ||
| View original record | x7080 BY. FROM E. E2/M14.11.31. C. to SG. WOR. HS. EXPANDING UPDRAUGHT SINGLE CHOKE CARBURETTER - P. 2. We send you herewith an advance print of LeC. 2972. shewing the above. This is a single… | ||
| 03-page362 | Technical discussion on various carburettor configurations for 6-cylinder engines. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. X7080 RS/MS.16.11.31. Sent off 19.11.31. X7080 X5080 X1487 CARBURATION. We have for a long time understood that it is advisable with double carburetters to have some… | ||
| 03-page363 | Standardisation report for an air silencer carburetter. | ||
| View original record | RR 755 (10M) (3-7-30) B.M. & /2571. 87080. COMPLETED 21.11.30. STANDARDISATION of CHASSIS PARTS. Date 3.10.30. X No. 7080. Drawing No. LeC. 2803. Part List E80520. Description of Parts. AIR SILENCER… | ||
| 03-page364 | Scheme of controls for a new type of expanding carburetter to be adapted for the Phantom. | ||
| View original record | X7080 BY. FROM E. E1/M24.11.31. C. to SG. WOR. HS. P.2. NEW TYPE EXPANDING CARBURETTER. We send you herewith the original of LeC. 2972., shewing the above. We are now proceeding with the scheme of… | ||
| 03-page365 | Pros and cons of single versus dual carburetters for a 6-cylinder engine. | ||
| View original record | x7080 HS. FROM R. R10/M28.11.31. Sent off 1.12.31. C. to SG. WOR. BY. P. 2. & J. 3. - CARBURETION. X.7080 X.5080 It is now pretty definitely established that we must have a through pipe for all the 6… | ||
| 03-page366 | Use of a double-hole type eccentric plug adjuster over a single-hole type for P.2 twin carburettors. | ||
| View original record | X9680 HS/RM. FROM E: E3/M/30.11.31. Copy to - BY. re. P.2. TWIN CARBURETTERS. We have never shewn a single hole eccentric plug adjuster on the above carburetter. Our last design LeC.2905. still shews… | ||
| 03-page367 | Modifications for carburettor hot spots on the Phantom II Continental model. | ||
| View original record | By. from Hs/Rm. x7080 Hs/Rm.3/AD30.11.31. HOT SPOTS - P.II CONTINENTAL. We are now fitting the two carburetters which were designed for J.III on the Continental P.II (Carbs. to L&C.2924). In order to… | ||
| 03-page368 | Blueprint of an induction pipe for twin S.U. carburetters on a P.2 chassis. | ||
| View original record | E*6383 CONNECTIONS WELDED TO HOTSPOT OTHER SIDE SIMILAR (OPPOSITE HAND) SEE E.81673 1.500 BORE x 16G (064") 2.750 5.500 ANY OTHER DIMS. TO E.81673. INDUCTION PIPE FOR TWIN S.U CARBURETTERS ON P.2 6.25… | ||
| 03-page369 | Test results for a higher compression 40/50 cylinder head comparing different carburetters. | ||
| View original record | R. From Hs/Rn. c. to Ss. Wor. c. to E. Da. c. to Ey. X7089 Hs/Rn.7/MA. 8.12.31. X7050 X7080 HIGHER COMPRESSION HEAD 40/50 We have carried out tests on a Cyl Head pieces No. E 82455, a drawing of which… | ||
| 03-page370 | Graph comparing engine performance characteristics for two different compression ratios. | ||
| View original record | COMPARISON OF COMPRESSION RATIOS R.M.P.44 2/12/31 114° CAMSHAFT E.82448 OPEN EXHAUST MANIFOLD ONLY STD VALVES 1.9 VALVE THROAT STD ROCKERS SINGLE S.U. CARB PIPE EX 7188 SKETCH 5 COMP. RATIO 5.22-1… | ||
| 03-page371 | Blueprint graph comparing engine performance with two different compression ratios. | ||
| View original record | COMPARISON OF COMPRESSION RATIOS RM P46 114° CAMSHAFT E 82448 OPEN EXHAUST MANIFOLD ONLY STD VALVES 1.9 INLET THROAT STD ROCKERS R.R. TWIN CHOKE CARB 1.4" DIA CHOKE COMPRESSION RATIO 5.22-1… | ||
| 03-page372 | Series of tests conducted to eliminate the phenomenon of induction pipe power roar. | ||
| View original record | To R. from Hs/Rm. c. to Sg. Wor. c. to Rk. Dk. c. to By. x7080 Hs/Rm.1/WJ. 12.12.31. x7070 INDUCTION PIPE POWER ROAR. We have now completed a series of tests on the elimination of this phenomenon. The… | ||
| 03-page373 | Induction pipe and carburettor arrangement tests, with accompanying blueprint sketches. | ||
| View original record | -2- He/Bm.1/MJ.12.12.31.Cont'd. Sketch (1). INTAKE SILENCER SCHEME FOR RAMMING TWIN CARBS INDUCTION PIPE ARRANGEMENT. We tried three entirely separate types of carburetter on three cyl.ramming pipes… | ||
| 03-page374 | Report with sketches detailing experiments on induction pipes and carburetors to reduce engine roar. | ||
| View original record | -3- (Sketch (3)). The induction pipes were then joined together in the centre for the full bore. The metering and slow running of the carburetters was upset by this alteration as one would expect, but… | ||
| 03-page375 | Carburetter and induction pipe performance tests, including a blueprint for a single S.U. induction pipe. | ||
| View original record | -4- A further test with this balance piece was then carried out joining the two halves of the induction pipe by means of a pipe 1.25" dia. This resulted in a further 60% reduction in the roar which in… | ||
| 03-page376 | Carburetter and silencer testing, including performance notes and proposed modifications. | ||
| View original record | -5- Ha/Rm.1/W.12.12.31 Cont'd. power. On the road the single S.U. behaves exceedingly well It will slow run at 180 R.P.M. with 5.25 c/r and will accelerate without hesitation throughout the whole… | ||
| 03-page377 | Photograph showing the left side of an automobile engine installed in a chassis. | ||
| View original record | 1. | ||
| 03-page378 | Photograph of an engine bay focusing on twin carburettors with large circular air cleaners. | ||
| View original record | 3. | ||
| 03-page379 | Photograph of an engine bay, focusing on the large circular air cleaner and radiator. | ||
| View original record | 5. | ||
| 03-page380 | Graph showing the effect of induction pipe diameter on twin carburettor engine performance. | ||
| View original record | EFFECT OF PIPE DIA. ON TWIN CARB. RM. P36 27/11/31 114° CAMSHAFT T.H.O INLET CAMS HIGH LIFT ROCKERS OPEN EXHAUST COMP. RATIO 4.65:1 1 3/4" CHOKES INDUCTION PIPE DIA. 1.875 ------ 1.550 _____ Valve… | ||
| 03-page381 | Photograph of a car engine bay, showing the air cleaner, radiator, and fan assembly. | ||
| View original record | 5. | ||
| 03-page382 | Testing of a single expanding carburetter. | ||
| View original record | 87080. To R. From Hs. c. to Rg. Wor. c. to E. Da. c. to By. Hs.1/MJ.29.1.32. R.R. SINGLE EXPANDING CARBURETTER. We have one of these carburetters running on the test beds. We expect it will be a few… | ||
| 03-page383 | Preliminary test report on the Phantom 11 Expanding Carburetter. | ||
| View original record | To R. From Hs/Sdl. c. to Sg. Wor. c. to E. Ds. c. to Hy. R.R. Phantom 11 Expanding Carburetter. We have carried out preliminary tests on the Phantom 11 expanding carburetter to Lec.2972. The first… | ||
| 03-page384 | Carburettor performance issues and development, focusing on fuel metering and potential leaks. | ||
| View original record | -2- Slow running operates quite well and covers the idling range up to 500 RPM. light running at which speed the diffuser definitely commences to supply fuel. Under full load conditions the small… | ||
| 03-page385 | Performance comparison graph between a single SU carburetor and an RR updraught expanding carburetor. | ||
| View original record | V1304 COMPARISON BETWEEN 2.800 BORE SINGLE SU CARB AND RR UPDRAUGHT EXPANDING CARB (LEC 29T5) TESTS WITH OPEN EXHAUST W.W. 114° (E.P.E.L.L.B) CAMSHAFT 4.8:1 COMPRESSION RATIO AREA PAST SU CARB = 1.9… | ||
| 03-page386 | Requesting the construction and modification of a new Phantom vertical expanding carburetter for testing. | ||
| View original record | To RHC. From Ha/Lov. 87089 Hs/Lov.4/MJ.19.2.32. NEW PHANTOM VERTICAL EXPANDING CARBURETTER. We are anxious to get another of the new Phantom carburetters in hand for test work. Would you please build… | ||
| 03-page387 | Test results for the Phantom II expanding type carburettors. | ||
| View original record | To R. from Hs. c. SS. Nor. c. E. De. c. FY. X7080 Hs.3/ADL3.2.32. PHANTOM II EXPANDING TYPE CARBURETTERS Following on our preliminary report He/adl.5/MJ. 12.2.32, the following results have been… | ||
| 03-page388 | Carburettor modifications and performance evaluation to address insufficient fuel supply. | ||
| View original record | -2- One of the troubles we have had was insufficient fuel at maximum R.P.M. full throttle. The main jet was increased from .125 to .172" without any appreciable difference. We made one experiment by… | ||
| 03-page389 | Features and performance of various carburettor types for the Phantom model. | ||
| View original record | E. HS. } FROM R. RG. } (At Le Canadel.) X7080. R2/M26.2.32. Sent from VV. 29.2.32. C. to SG. WOR. BY. PN. CAR WORK - CARBURETTERS. X.7080 X.5080 I thank Mr. Elliott for his memo. re. our vertical… | ||
| 03-page390 | Valve timing, considering excessive overlap, cam specifications, and tappet clearance. | ||
| View original record | -2- This week I heard of a South American living near here sending his Graham-Paige (recently new) for sale because it was doing under 8 miles per gallon. In the past RR. cars have been exceptionally… | ||
| 03-page391 | Merits of single versus dual carburettors and the development of a new expanding carburetter. | ||
| View original record | To R. From Hs. c. to Sy. c. to Wor. c. to E. c. to Da. c. to By. c. to FH. x7080. Hs.1/MJ.3.3.32. x5080. CARBURETTERS. It must be remembered that one of the chief difficulties we have in coming to a… | ||
| 03-page392 | Tests conducted on the Phantom II expanding carburetter to improve opening up from idling speeds. | ||
| View original record | R. From Hs/Swdl. c. to SS. WDF. c. to S. RV. c. to Ds. PHANTOM II EXPANDING CARBURETTER. The recent tests on the P.II expanding carb. have been directed towards producing good opening up from idling… | ||
| 03-page393 | Technical report on carburettor testing, focusing on acceleration issues, slow-running fuel supply, and proposed choke modifications. | ||
| View original record | -2- It is usually found that trouble with opening up and acceleration only appears when the choke is increased to provide about the last 25 to 30% power. We have therefore made some chokes to try out… | ||
| 03-page394 | Page outlining modifications to a carburettor's air piston and slow running fuel system. | ||
| View original record | -3- He/Swld.2/VA.3.3.32.contd. (2) We wish to use the minimum of damping on the air piston so that it will fall quickly on closing the throttle and therefore be in the condition to permit quick… | ||
| 03-page395 | Design of a P.2 semi-expanding carburetter, including historical context and solutions for snap acceleration. | ||
| View original record | E. HS.) FROM R. BY. ) (At Le Canadel.) C. to SG. WOR. HS/LOV. C. to RG. PN. EP. 17080 R2/My.3.32. Sent from WW. 12.3.32. REC'D 11 NOV 1932 CARBURETTERS GENERALLY. P.2. SEMI-EXPANDING CARBURETTER. I… | ||
| 03-page396 | Comparing the performance and practicality of various carburettor configurations for Continental Phantom & 25HP models. | ||
| View original record | SG. FROM E. x7080. C. to WOR. Hs. E1/MS.3.3.32. X.7080 K.5080 CARBURETTERS - CONTINENTAL PHANTOM & 25HP. The best all round performance has been obtained with two SU carburetters, but there are… | ||
| 03-page397 | Design sketch with annotations for a valve arrangement, discussing modifications to control lift and suction. | ||
| View original record | (2) Now since we have too much energy of lift we can get much better results if we arrange the air for the suction in our old way, which looks as if we can carry it out as shewn on the sketch below:… | ||
| 03-page398 | List of main modifications for the R.R. Semi-Expanding Carburetter - PH.II, sent with blueprint LEC.3026. | ||
| View original record | 87080; RECEIVED 1932 MAR 18 BY. c. HJW. c. Hs. c. RHB. ------------- E/JNRL/HP.15.3.32. ----------------- R.R. Semi-Expanding Carburetter - PH.II --------------------------------------- We send you… | ||
| 03-page399 | Two designs for an air valve for a Semi-Expanding Carburettor, Phase 2. | ||
| View original record | RHC. c. Hs. x708/0. E/JNR3/HP17.3.32 R.R. Semi- Expanding Carb. Ph.2. We send you herewith LEC.3029 which shows two designs for an air valve. Scheme 2 follows the recent instructions from R. We wish,… | ||
| 03-page400 | Continued tests of a Phantom II semi-expanding carburetter, focusing on acceleration and 'snap opening'. | ||
| View original record | R. From Hs/Swdl. c. to Sd. H.Cr. c. to E. Oa. c. to Sy. 87080. Hs/Swdl.3/MA.19. 3. 32. PHANTOM II SEMI-EXPANDING CARBURETTER. We have continued our tests on the Semi-expanding carburetter Lec.2972… | ||
| 03-page401 | Testing and performance of different carburettor suction piston designs. | ||
| View original record | -2- ES/Cwd.3/CA.19.3.32.contd The disadvantage to this scheme is the, slow fall of the piston when closing the throttle from full open at high speeds. If the throttle is again opened up before the… | ||
| 03-page402 | Carburetter sticking issues and proposed modifications for improved performance. | ||
| View original record | -3- HS/Shell.3/A.19.3.32.contd. In the original piston having no centre guide but taking its bearing on the side of the piston, we experienced trouble by sticking and careful attention to the bearing… | ||
| 03-page403 | List of modifications to a carburetter, detailing changes to various components and their dimensions. | ||
| View original record | -4- Hs/Sec.3/WA.19.3.32.contd (3) Modification Lec. 2993 which increases the distance between the small venture and the throttle edge in an open position to be made as one unit with the throttle body… | ||
| 03-page404 | Continuation of notes on carburetter modifications, specifically the hot spot, needle valve, and air valve performance. | ||
| View original record | -5- (11) Hot spot to be shorter by amount which the carburetter has been dropped in accordance with Lec.2999. (12) Needle Valve as (E.82638). We may later have to modify the needle taper. Other parts… | ||
| 03-page405 | Blueprint for a modification to a piston for an experimental carburettor. | ||
| View original record | V1324 2.748 DIA -1/4 1 HOLE DRILL .075 DIA 1.156 0.457 45° SEAT 90° 1.800 DIA -2 2.100 DIA -2 MOD'N TO PISTON (EX'P'G CARB) OTHER DIMENSIONS SEE (Ex 7804) 1.900 +0 -6 2.050 4 HOLES EQUALLY SPACED… | ||
| 03-page406 | Requesting a new Phantom II semi-expanding carburetter with the latest modifications. | ||
| View original record | To E. From Hs/Lov. c. to By. c. to RHC. Y7080. Hs/Lov.21/MA. 23. 3. 32. PHANTOM II SEMI-EXPANDING CARBURETTER. We are urgently in need of another carburetter embodying all the latest modifications… | ||
| 03-page407 | Design considerations and suggestions for a semi-expanding carburetter. | ||
| View original record | E. ) FROM R. HS. ) (At Le Canadel.) BY. ) X7080. R1/M29.3.32. Sent from W.W.1.4.32. C. to SG. WOR. RG. SEMI-EXPANDING CARBURETTER. X. 7080 This seems to be hopeful of soon being satisfactory. It is… | ||
| 03-page408 | Three potential modifications to reduce air valve lift in a semi-expanding carburetter. | ||
| View original record | E. ) FROM R. HS. } (At Le Canadel.) BY. ) X7080 R2/M29.3.32. Sent from W.W. 1.4.32. C. to SG. WOR. RG. SEMI-EXPANDING CARBURETTER. X.7080 I understand that our air valve has too much lift when we take… | ||
| 03-page409 | The development and testing of a new air piston for a B.11 semi-expanding carburettor. | ||
| View original record | 87080 To R. From Hs/Lsv. c. to Sg. Wor. c. to Rg. E. c. to By. Da. Hs/Lsv.2/MJ.5.4.32. B.11 SEMI-EXPANDING CARBURETTER. We have tested out the new air piston shown in R.2/M.9.3.32 (Lec.3029 Sch.1) in… | ||
| 03-page410 | Page from a memo discussing the need for road testing on a chassis to identify issues missed on the test bench. | ||
| View original record | -2- Hs/Lov.2/MJ.5.4.32. Cont'd. on a chassis to see if there are any points shown up by road test which have escaped us on the test bench. Hs/A.C.Lovesey. | ||
| 03-page411 | Requesting a shorter hot spot junction piece to fit a P.2 expanding carburetter for road tests on a 20-EX chassis. | ||
| View original record | X7080. To RHC. From Hs/Lov. Hs/Lov.6/MJ.7.4.32. P.2 EXPANDING CARBURETTER. With regard to fitting up the test bed carburetter on a chassis for road test, it will be necessary to provide a shorter hot… | ||
| 03-page412 | Modifications to be carried out on the Phantom II Semi Expanding Carburettor (LeC.3026). | ||
| View original record | To RHC. From Ha/Swdl. c. to BY. x7080 Hs/Swdl.3/WJ.11.4.32. Modifications to be carried out on Phantom II Semi Expanding Carburettor (LeC.3026). which is now being built. (1) Diameter of the suction… | ||
| 03-page413 | Confirming the completion of design work for fitting the Phantom II Semi-Expanding Carburetter. | ||
| View original record | BY. c. Hs. ------- Y7080. E/JNR.1/HP.12.4.32. Phantom II - Semi-Expanding Carburetter. ------------------------------------- We send you herewith LeC.3061, a drawing which shows the throttle lever… | ||
| 03-page414 | Design alteration for the cap on the Air Valve Guide of the Semi-Expanding Carburettor, Phase II. | ||
| View original record | 87080 To-By. from E/JNR. Hs. WHC. ------------------- E/JNR.1/HP.15.4.32. ------------------- Semi-Expanding Carb: Ph.II --------------------------- Will you kindly note that the cap on the top of the… | ||
| 03-page415 | Carburettor floats being too light and proposing a trial with a heavier gauge material. | ||
| View original record | To BY. From Ha/Swdl. c. to RHC. c. to E. 87080. Ha/Swdl.1/MJ.15.4.32. SEMI EXPANDING CARBURETTER. LEC.3026. We find that when setting the petrol level, the present floats (28 SWG.) .0148 are too light… | ||
| 03-page416 | Blueprint updates for the Phantom II Semi-Expanding Carburetter, detailing replacement part numbers for the float assembly. | ||
| View original record | X7080 To etc. c. Hs/Swdl. BY/CS2/EH.16.4.32. Re Phantom II - Semi-Expanding Carburetter - Section 5080. Lec. 3026. Please receive herewith marked-up blueprints of the following:- E.83139 Float Cover… | ||
| 03-page417 | Proposal for the control of an expanding carburetter, suggesting specific settings for normal running, warming up, and starting. | ||
| View original record | 87080. To R. from E. c. Sg. For. Hs. By. E.4/HP.22.4.32. Control for R.R. Expanding Carburetter. With any taper needle expanding type of carburetter it is not possible to have a range of mixture… | ||
| 03-page418 | Blueprint for a steering wheel-mounted mixture control for a semi-expanding carburettor PII. | ||
| View original record | LEC 3079 54° FAST NORMAL RICH START ADV RETARD DIM DIPPED NOR ROLLS-ROYCE, LTD. PRINT ROOM APR 22 1932 DERBY. STEERING WHEEL MIXTURE CONTROL SCALE 1/2 & 2/1 SEMI-EXPANDING CARB PII J.D. Pearson… | ||
| 03-page419 | The initial chassis tests of a new semi-expanding carburettor, detailing performance, modifications, and starting issues. | ||
| View original record | To R. From Hs/Lov. c. to Sg. Wox. c. to E. Da. c. to By. 87080 Hs/Lov.5/MJ.25.4.32. R.R. SEMI EXPANDING CARBURETTER. We have now had the first tests on a chassis with the new semi-expanding… | ||
| 03-page420 | Carburetter performance, detailing issues with slow running, mixture control, noise, and fuel build-up. | ||
| View original record | -2- Hs/Lav.5/MJ.25.4.32.Cont'd. to be forced downwards from the holes in the diffuser tube. We did not have a chance to investigate this at the time. It is, however, receiving attention. It was found… | ||
| 03-page421 | Calculations and design considerations for carburettor air silencers on the Phantom II. | ||
| View original record | To E. From Hs/Rm. 87080. Hs/Rm.3/MJ.2. 5. 32. AIR SILENCERS FOR R.R. CARBURETTERS. We have been doing some calculations on the air intake silencers for the R.R. semi-expanding carburetter on Phantom… | ||
| 03-page422 | Power output curves for the Phantom II with various carburettors and silencer losses. | ||
| View original record | COPY. X 7080. To E. From Hs/Rm. Hs/Rm.1/AD12.5.32. POWER OUTPUT - PHANTOM 11. X.7771. X.7080. We attach curves of the power output of the Phantom 11 with various carburetters, which may be of use to… | ||
| 03-page423 | Graph comparing power output with a 5.25 compression ratio under four different carburettor and intake setups. | ||
| View original record | COMPARISON OF POWER OUTPUT WITH 5.25 COMP. RATIO 1 1/4" CAMSHAFT (E.82448) (LONG TYPE SILENCER COMPLETE) (DOUBLE VALVE SPRINGS) (STANDARD ROCKERS) ① STANDARD P.I. CARB & INTAKE SILENCER ②… | ||
| 03-page424 | Parts to be incorporated into two semi-expanding carburetters. | ||
| View original record | V7080 To By. from He/LHS. c. to RHC. He/LHS.3/KT.23.5.32. SEMI EXPANDING CARBURETTER (LeC.3026) We should like the following parts to be incorporated on the 2 carburetters which are now being built.… | ||
| 03-page425 | Scheme to overcome air lock trouble in the Semi-Expanding Carburetter Ph.II. | ||
| View original record | x7080. To Hs. c.c. R.H.S. E/JNR.1/HP.9.6.32. Re Semi-Expanding Carburetter Ph.II. We send you herewith Lec.3123. We have prepared this scheme to overcome the air lock trouble when filling up with… | ||
| 03-page426 | Design and production of a resonance silencer and semi-expanding carburetter. | ||
| View original record | X7080. To RHC. from Hs/Rn. Hs/Rn.11/KT.10.6.32. RESONANCE SILENCE P.II. R.R. SEMI EXPANDING CARBURETTER. We hand you herewith LeC.3100. On this we have marked the dimensions which matter, the rest can… | ||
| 03-page427 | Resonance air silencer tests for carburettor roar on a Phantom II semi-expanding carburettor. | ||
| View original record | Files. 87080. 15.6.32 CARBURETTER ROAR. P.II. SEMI EXPANDING CARB. RESONANCE AIR SILENCER TESTS. Inside dia. of tuning pipe 2.750" For 40 m.p.h. roar, length of pipe 4" For 60 m.p.h. roar, pipe… | ||
| 03-page428 | Performance of a new semi-expanding carburettor compared to previous models. | ||
| View original record | X7080 HS. } FROM R. R2/M15. 6.32. E. } C. to SG. WOR. BY. SEMI EXPANDING CARBURETTER. ----------------------- The specimen shewn me on 19-EX. seems to do its duty extremely well, and better than… | ||
| 03-page429 | Patent infringement and royalty payments for the expanding carburetter. | ||
| View original record | X7080 X1487 To Eg. c.c. Mr. Hs. Hy. By. Wn. By/NW. re R.R. Expanding Carburetter Referring to the use of the central guide on the air valve of the new R.R. expanding carburetter, it will be remembered… | ||
| 03-page430 | Test report on the Phantom II semi-expanding carburetter, detailing weaknesses and potential improvements. | ||
| View original record | 87080. E. From Hs/Swdl. c. to Hcr. c. to Ey. Hs/Swdl.2/MA.20.6.32. PHANTOM II SEMI EXPANDING CARBURETTER. Since our last report we have had the opportunity of testing the carburetter Lec.3026 which… | ||
| 03-page431 | Carburetter starting and slow running issues, including proposed solutions. | ||
| View original record | -2- Hs/Swdl.2/4A.20.6.32.Contd. (a) Direct feed passage from main jet into the diffuser without any unnecessary capacity between the two. (b) Slow running feed on same level from the diffuser and… | ||
| 03-page432 | Test results and specifications for carburettor acceleration and metering. | ||
| View original record | -3- Bs/Swdl.2/MA.20.6.32.Contd. Now that the slow running feed is taken from the diffuser, the filter could be moved to a more useful position, somewhere before the petrol enters the mechanism.… | ||
| 03-page433 | Carburetter adjustments, focusing on quick thread adjustment, suction piston performance, and float material. | ||
| View original record | -4- Hs/Swdl.2/MS.20.6.32.Contd. We have fitted a quick thread adjustment for the main jet to V.1353/6 which gives a movement of .050 on the jet, when the control is moved from rich to weak (approx… | ||
| 03-page434 | Cross-section drawings comparing a modified carburetor component with a later version. | ||
| View original record | V1389 FROM MAIN JET JET EXTENSION 1.00 MODIFIED Lec 2972 EXTERNAL FEED PIPE .125 BORE FROM DIFFUSER TO SLOW RUNNING UNIT Lec 3026 ROLLS-ROYCE, LTD. PRINT ROOM JUN 20 1932 DERBY. R.B.S / 17-6-32 | ||
| 03-page435 | Blueprint for a modification to a slow running body for an expanding carburettor. | ||
| View original record | V1390 1.575 +10 .151 2 DIA .3115 DIA +3 -2 .400 +5 -10 .075 RAD ±5 MOD'N SLOW RUNNING BODY (EXP'D'G CARB) OTHER DIMENSIONS SEE (E82875/6) ROLLS-ROYCE LTD. PRINT ROOM JUN 20 1932 DERBY 17-12 | ||