Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | With instructions regarding the carburetter, petrol feed, and induction pipe for the Goshawk chassis. | ||
| View original record | R.R. 235 a (100 T)R.F. 846 6-8-19 G. 2460. To Ds. from E. Copy to CJ. " " Bn. " " Hs. " " Ck. X.3582. RE GOSHAWK CHASSIS. X.3581. CARBURETTER AND PETROL FEED. In accordance with Mr. Royce's wishes… | ||
| Scan002 | Various schemes for fitting induction pipes to the Goshawk engine. | ||
| View original record | 16 1920 To R from DA. Copy to BH. Copy to EFC. RECEIVED X.3581 DA2/UB16-9-20. "Goshawk" Induction Pipes. X.3581 We have got the "Goshawk" engine running with some temporary copper pipes and an R.R.… | ||
| Scan003 | Enclosing two blueprints for scheme 574, showing an arrangement of the Goshawk carburetter and induction pipe. | ||
| View original record | X 3581 To By. from Da. Copy to TB. (1 print). Copy to Hs. (1 print). Copy to RHC. (1 print). Copy to EFC. Da10/CB25.10.20. X. 3582. "Goshawk" Carburetter & Induction Pipes. X.3581. Please receive… | ||
| Scan004 | Drawing LeC 1327 for the carburetter and induction pipe flanges of the 'Kite' engine. | ||
| View original record | To Da. from E. C. to CJ. WOR. HS. EFC. X.4224 (handwritten and crossed out) E4/G1. 1. 2D. X 4227. RE"KITE" ENGINE - INDUCTION PIPE FLANGES. We send you herewith drawing No. LeC 1327 shewing the… | ||
| Scan005 | The distribution of two blueprints for the 'KITE' chassis. | ||
| View original record | X4224 To By. from Da. c. to Hss (1 print). c. to TB. (1 print). c. to RHC.(1 print). c. to EFC. Da4/CB3.1.21. X.4220. X.4227. RE "KITE" CHASSIS. Please receive herewith two blue prints of LeC.1326 -… | ||
| Scan006 | Extract detailing design updates for the Goshawk II engine, including the detachable head, induction pipe, and auxiliary drives. | ||
| View original record | R.R. 235A (100 T) (S.H. 159. 11-8-20) G. 2800 X4224 TO Da. from R. Extract from R3/G18.1.21. X.3481. RE GOSHAWK II" (3) We expect to send you the drawing of the latest detachable head for the… | ||
| Scan007 | Drawing Lec.1333 for the Goshawk 11 - 3/21 Gear Box and its assembly. | ||
| View original record | K.R. 225a - 100 T) (S.H 798 10-12-20) G. 2947 X4247 E3/G2.2.21. To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to By. c. to EFC. X.4247. RE "GOSHAWK 11" - 3/21 GEAR BOX. Herewith please receive… | ||
| Scan008 | Suggested assembly order for the 3/21 Goshawk 11 gearbox. | ||
| View original record | 31st. Januaryn 1921. SUGGESTED ORDER OF ASSEMBLING 3/21 GEARBOX - "GOSHAWK 11". (1) Fit in top middle ball bearing and fix. (2) Put in all bolts and ring same where required. (3) Put in large helical… | ||
| Scan009 | Numbered list of assembly instructions, page 2, for a mechanical component. | ||
| View original record | -2- (18) Press in bearing for lower shaft. (19) Put spring plungers and housing in position in the top sides of box. (20) Lock gears by pushing (handwritten: meshing) reverse and forward gear wheels,… | ||
| Scan010 | Modifications to the Goshawk 11 induction and exhaust pipes. | ||
| View original record | To Da. from E. c. to CJ. c. to WOR. X.4227 c. to Hs. X.4238. c. to BY. c. to EPC. X.4227. E3/G24.2.21. RE. GOSHAWK 11 INDUCTION AND EXHAUST PIPES. We send you herewith LeC.1356 shewing the above. For… | ||
| Scan011 | Considerable trouble with porous induction and exhaust pipes on the Goshawk 11. | ||
| View original record | X4227 To BY. from Hs. c. to WOR. Hs3/LG27.9.21. GOSHAWK 11. INDUCTION AND EXHAUST PIPES. X4227. We are having considerable trouble with the Induction and Exhaust Pipes on Goshawk 11. being porous.… | ||
| Scan012 | Blueprints for Goshawk 11 cylinder inlet pipes and part replacements. | ||
| View original record | X.4227. To RHC. from BY/Shn. c. to EFC. c. to Wd. c. to Sft. c. to Mr. Broome. BY/Shn2/DB30.9.21. X.4225 - GOSHAWK 11. CYLINDER. X.4227 INLET PIPES. Please receive herewith two blueprints of each of… | ||
| Scan013 | Investigation into a roaring noise from the Goshawk 11 induction system. | ||
| View original record | X4227 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. HS2/LG5.10.21. (422) GOSHAWK 11. INDUCTION SYSTEM. X1692 With reference to the roar we get from the induction system.… | ||
| Scan014 | Modified induction pipe design for the Goshawk 11 engine to solve hot spot issues. | ||
| View original record | X4227 To Da. from E. c. to CJ. c. to Wor. c. to HS. c. to BY. E2/G6.10.21. X.4227 - RE GOSHAWK 11. INDUCTION PIPE. We send you herewith drawing Lec.1459 shewing a modified induction pipe for the… | ||
| Scan015 | Telegram discussing the reduction of Goshawk engine roar. | ||
| View original record | Roycar Derby. Hives re goshawk suggest roar can only be reduced by effective combined silencer on carburator and extra air intakes reason why noisier than others more vigorous suction and less… | ||
| Scan016 | Two design schemes for overcoming a hot spot issue on the Goshawk 11 induction pipe. | ||
| View original record | R.R. 555a (100 T) (S.B. T98, 10-12-20) G. 1947 X.4227 Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. E3/G7.10.21. X.4227 - RE GOSHAWK 11. INDUCTION PIPE WITH MODIFIED HOT SPOT. We send you… | ||
| Scan017 | Telegram confirmation regarding reducing engine roar on the Goshawk model by fitting a silencer. | ||
| View original record | CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. ORIGINAL To. ROYCAR DERBY. X.4227 / X4238 X4219 HIVES RE GOSHAWK SUGGEST ROAR CAN ONLY BE REDUCED BY EFFECTIVE COMBINED SILENCER ON CARBURETTOR AND… | ||
| Scan018 | Investigation into the cause of a roar in the Goshawk 11 induction system by comparing it with the Goshawk 1. | ||
| View original record | To R from Hs. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. X4227 Hs4/LG10.10.21. X.4219 - GOSHAWK 11. X.4227. With reference to your telegram of the 7th.inst. We have carried out further tests… | ||
| Scan019 | Confirmation of a telegram regarding a testing suggestion for a double port alteration. | ||
| View original record | CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. ROYCAR DERBY. HIVES SUGGEST TESTING ONE AND SIX ONLY BY BLANKING OFF OTHERS SENDING SUGGESTION FOR ALTERATION TO DOUBLE PORT WHICH MUST CAUSE ROAR.… | ||
| Scan020 | Investigation into the cause of 'Induction Roar' and tests to reduce it by altering valve design. | ||
| View original record | X.4227. Extract from Hs3/LG13.10.21. INDUCTION ROAR X.4227. We have carried out further tests in connection with this and feel fairly convinced that the noise doesnot come from the induction passages.… | ||
| Scan021 | Altering the shape of the double inlet and exhaust ports on the Goshawk 11 cylinder head to reduce noise. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. (X4227) E5/G13.10.21. X.4227 - RE GOSHAWK 11. CYLINDER HEAD - ALTERATION TO SHAPE X.4225 OF DOUBLE INLET AND EXHAUST PORTS TO REDUCE NOISE. We… | ||
| Scan022 | Goshawk engine induction roar and starter motor pinion issues. | ||
| View original record | 4227 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. Hs2/LG14.10.21. GOSHAWK 11. X.4219. INDUCTION ROAR. X.4227. We are disappointed with the improvement made by altering a… | ||
| Scan023 | Confirmation of a telegram from Royce to Hives regarding a meeting and a comparison of the Goshawk and Marmon. | ||
| View original record | CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. X4227 1st November, 1921. X4227 X1692 X3614 ROYCAR DERBY. HIVES WHEN DO YOU HOPE TO BE HERE MANY THINGS TO DISCUSS RE USA SEE COPY OF LAST NIGHTS… | ||
| Scan024 | Confirmation of a telegram telephoned to Chichester regarding engine and chassis modifications. | ||
| View original record | X4227 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 3rd November, 1921. W. Hs ROYCAR DERBY. X4227 / X4226 X4329 / X4244 HIVES SUGGEST RECORD SPEED ROAR COMMENCES THEN INCREASE STRENGTH VALVE… | ||
| Scan025 | Reducing engine roar on the Goshawk and a broken supporting tube. | ||
| View original record | X4227 4.11.21. ROYCE, ELMSTEAD, WEST WITTERING. X4227 X4219 ROAR ON GOSHAWK VERY CONSIDERABLY REDUCED BY LATER VALVE TIMING STOP ONE OF SUPPORTING TUBES FOR FRONT OF ENGINE BROKEN ON BUMP AFTER TWENTY… | ||
| Scan026 | Confirmation of a telegram regarding engine roar and suggested exhaust modifications. | ||
| View original record | R.R. 335a (100 T: S.H. 708, 10-12-20) G. 2948 X4227 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 4th. Nov.1921. X.4328 X4238 X.4227 ROYCAR DERBY. HIVES CONCLUDE ROAR CAUSED BY PRESSURE REMAINING… | ||
| Scan027 | Modifications to the Goshawk 11 induction and exhaust pipe. | ||
| View original record | X4227 To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. E1/G19.11.21. X.4227 X.4238 - INDUCTION AND EXHAUST PIPE - GOSHAWK 11. We send you herewith drawing LeC.1485 shewing the induction pipe… | ||
| Scan028 | Requesting comparative testing of induction pipes for Goshawk 11 and Neptune engines using a paraffin fuel mix. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to Da. c. to BY. c. to EP. c. to HY. c. to OY. X4227 R3/M15.12.21. X.3583 X.4227 - INDUCTION PIPES - GOSHAWK 11. & NEPTUNE. We do not know how Goshawk 11.… | ||
| Scan029 | Comparison of the Goshawk and Dorris schemes for self-draining induction pipes. | ||
| View original record | X4227 To R. from Hs. c. to GJ. c. to E. c. to DA. c. to BY. c. to EP. c. to FN. c. to HST. for R.R. Inc. X4305 X4227 for attention of OY. Hs3/LG16.12.21. INDUCTION PIPES. X4390 X1449 "We do not find… | ||
| Scan030 | Testing of a 40/50 model, including a cold start with a paraffin mixture. | ||
| View original record | contd. -2- HS3/LS16.12.21. **************** The reason for this is that the latest 40/50 is wonderfully good. As soon as we can have 6.EX Car for a week we should like to fit this car with the latest… | ||
| Scan031 | The limitations of the 40/50 collector and vaporiser system and the need for an improved induction system. | ||
| View original record | X.4227 Extract from R7/M30.12.21. X.4219. (10) INDUCTION PIPES X.4227. Although the system of collectors and vaporisers on the 40/50 does so well when starting from cold I think that we should not… | ||
| Scan032 | Modifications to the Goshawk 11 engine's induction and exhaust pipes. | ||
| View original record | To BY. from E. c. to CJ. c. to Wor. c. to Hs. X4227 E2/M18.3.22. GOSHAWK 11. INDUCTION & EXHAUST PIPES. X.4238 X.4227. With reference to the modifications necessary to the standardised form of… | ||
| Scan033 | Design changes and sending advance blueprints for the Goshawk radiator, fan, and cowling. | ||
| View original record | To BY. from E. c. to CJ. c. to Wor. c. to Hs. c. to EF. X4227 E1/M28.6.22. GOSHAWK RADIATOR, FAN, COWLING, SHUTTERS, ETC. X.4240. X.4227. We send you herewith 2 advance blue prints of LeC.1588 and… | ||
| Scan034 | Continued letter discussing alterations to the cylinder block and the status of official blueprints. | ||
| View original record | contd:- -2- existing eccentric adjustment by automatic spring tension adjustment. This is so on LeC.1601 and as you will observe it necessitates altering the facing and stud bosses on the front end of… | ||
| Scan035 | Exhaust and induction tests for a 20 HP engine, focusing on performance, economy, and heat modifications. | ||
| View original record | To HS. from R. c. to CJ. X4227 RL/M4.7.24. 20 HP. EXHAUST AND INDUCTION TESTS. X.4238 X.4227 With regard to the above tests I should like to know if the freer exhaust, such as you have with the 3 pipe… | ||
| Scan036 | Instructions for completing the installation of the Goshawk-1 induction pipes, exhaust pipes, and carburetter system. | ||
| View original record | To BY+ from E. c. to CJ. c. to Wor. c. to Hs. X4227 E1/1/25.7.22. GOSHAWK 1. INDUCTION PIPES, EXHAUST PIPES & CARBURETTER. X.4228. X.4227. We send you herewith drawings Nos.LeC.1613 and 1614 shewing… | ||
| Scan037 | Carburetter and dynamo starter motor arrangements for Goshawk-11 and 40/50 patterns. | ||
| View original record | contd: -2- standard Goshawk-ll patterns, but with an alteration carried out in the foundry. The float chamber may require a rough pattern making to get the low speed, and high speed jets in the… | ||
| Scan038 | Tests conducted on Goshawk induction pipes regarding petrol distribution and engine faults. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. X4227 Hs5/LG26.7.22. GOSHAWK - INDUCTION PIPES. X.4227. X.4390. X.1487. X.4228. We have carried out a number of tests lately on Goshawk 11.… | ||
| Scan039 | Carburettor performance tests with various fuels and heating methods on Goshawk and 40/50 HP models. | ||
| View original record | contd:- -2- We have carried out tests which show that a carburetter will work perfectly on Aviation petrol or Benzol but if inferior petrol with paraffin added is used, there will be a definite… | ||
| Scan040 | Carburetter testing, diagnosing engine hesitation and weakness related to the air valve position and petrol supply from the high-speed jet. | ||
| View original record | contd:- -3- by means of a pipe. With this arrangement we proved that the movement of the valve on the instrument board was identical to the one in the carburetter so that it was possible to see at a… | ||
| Scan041 | On the successful testing of a new induction pipe design and a proposal for further experiments on the Marmon engine. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. X4227 Hs6/LG2.2.23. INDUCTION PIPES X.1692 X.4227. X.2758. We have succeeded in making an induction pipe with the carburetter fitted on the exhaust side of the engine… | ||
| Scan042 | Testing aluminium washers for induction and exhaust pipes on a 20 HP chassis. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. 4227 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By E. Da. EP PN. OY. Expl. No. X4227 X4238 REF. Hs/TMW1/LG30.5.24. OBJECT OF TEST. To test aluminium… | ||
| Scan043 | Tests and proposed modifications to the 20 HP engine's exhaust and induction systems. | ||
| View original record | 4227 To HS. from R. c. to CJ. R1/M4.7.24. 20 HP. EXHAUST AND INDUCTION TESTS. X.4238 X.4227 With regard to the above tests I should like to know if the freer exhaust, such as you have with the 3 pipe… | ||
| Scan044 | Query and suggestion regarding a cost-saving modification to the 20 HP chassis induction system. | ||
| View original record | TMW 4227 Hs. BY12/H. 9. 12. 24. 20 HP. CHASSIS. INDUCTION SYSTEM. --------------------------------- We would like to know how far you have got in testing out the scheme by which we screwed a steel… | ||
| Scan045 | Modifications to the Goshawk engine valve gear arrangement. | ||
| View original record | X 3580 X 4226 To Da. from E. Copy to CJ. " " Bn. " " Hs. " " Ck. E2/G10.2.20. X.3310. RE GOSHAWK VALVE GEAR. X.3586. X.3580. We send you herewith drawing No. LeC.1201 giving an arrangement of the… | ||
| Scan046 | Modifications to the camshaft casing and valve springs to allow the engine to run at 4,000 rpm. | ||
| View original record | R.R. 235 a (100) T. (R.F. 816. 6-8-19) G. 2460. -2- E2/G10.2.20. Contd. 2 BA spanner. It may be necessary to provide a special key for rotating the tappet screw. The camshaft casing itself, together… | ||
| Scan047 | Parts fitted to a 'Goshawk' engine for testing. | ||
| View original record | X3580 To EFC. from RHC. c. to Hs. Hs4/LC20.9.20. X.3481. RE "GOSHAWK" ENGINE. The above engine has been placed on test and has been fitted with the following parts. X.3624. - Water Pump. X.3310. -… | ||
| Scan048 | Test results for exhaust valve clearance and tappet noise on the Goshawk engine. | ||
| View original record | X 3586 Extract from Hs2/LG28.9.20. X.3481. RE"GOSHAWK" ENGINE. X.3580. We made tests to find the amount the exhaust valves on the small engine lengthened when under maximum load. We find that if we… | ||
| Scan049 | Proportions and performance data for 'Goshawk 11' valve springs. | ||
| View original record | X4226 To Da. from E. c. to CJ. c. to Wpr. c. to HS. c. to EFC. E2/G25.1.21. x.4226. RE "GOSHAWK 11" VALVE SPRINGS. We send you herewith drawing No. Lec.1337 giving the proportions and data for the… | ||
| Scan050 | Modifications to the Coshawk 11 valve gear spring washer. | ||
| View original record | X.4226. To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. E6/G17.10.21. COSHAWK 11 - VALVE GEAR. X.4226. We send you herewith drawing LeC.1466 shewing the valve spring washer modified. The… | ||
| Scan051 | Directive regarding the non-use of castellated nuts for the cylinder head and valve gear. | ||
| View original record | X4226 21.10.21. Extract from E1/G21.10.21. X.4219 CYLINDER AND VALVE GEAR NUTS. X.4225 X.4226 Mr. Royce does not wish the cylinder head nuts, whether enclosed or outside, to be castellated, neither… | ||
| Scan052 | Telegram suggesting modifications to an engine to reduce speed roar, such as increasing valve spring strength. | ||
| View original record | R.R. 144A (100B.) SE 867. 9.7.18 MP 193871 ROLLS-ROYCE, LIMITED. Handwritten Reference: X4226 TELEGRAM RECEIVED BY TELEPHONE. References: X4226, X4237, X.4244. x, X.4329 x Time Received: [blank] Date:… | ||
| Scan053 | Telegram received by telephone with instructions for vehicle modifications. | ||
| View original record | ROLLS-ROYCE, LIMITED. TELEGRAM RECEIVED BY TELEPHONE. Time Received. Date. To HE. By. from 2. to make all inlet ports double Stop bring chassis with shock dampers and improved clutch. FROM Royce. THIS… | ||
| Scan054 | Requesting information on experimental Goshawk engine valve timing and clearances to decide on alterations for Goshawk II. | ||
| View original record | URGENT. X4226 To Hs. from E. c. to CJH BY. E1/M30.12.21. RE VALVE TIMING ON GOSHAWK II. X.4229. X.4226 With reference to he above, it is necessary to decide what alterations are required to the cam… | ||
| Scan055 | Using double valve springs and a modified valve gear cover nut for the Goshawk 11 engine to test high speed vibration. | ||
| View original record | X4226 To Da. from E. c. to CJ c. to Wor. c. to BY. c. to HS. E1/M11.2.22. GOSHAWK 11. X.4226. X4221 DOUBLE VALVE SPRINGS & MODIFIED VALVE GEAR COVER NUT . We send you herewith drawing No.Lec.1533… | ||
| Scan056 | Stronger valve tappet springs for the Goshawk 11 engine, including an experimental spring and a proposal for standardization. | ||
| View original record | To Da. from E. c. to CJ c. to Wor. c. to HY. c. to Hs. X4226 E2/M.16.2.22. GOSHAWK 11. STRONGER VALVE TAPPET SPRINGS. X.4226. We send you herewith drawing No.Lec.1534 shewing a stronger valve tappet… | ||
| Scan057 | Request for dynamometer figures and valve timing data for the Goshawk 11 engine, for comparison against other car engines. | ||
| View original record | X4226 EP. from E. c. to CJ. c. to Wor. c. to Hs. E2/M3.4.22. GOSHAWK 11. X.4129 X4134 X.4526 X.4226. We should be very glad if you could supply us with figures giving the HP. of the Goshawk 11. car,… | ||
| Scan058 | Proposal to try a larger, lightened .625' roller on the Goshawk 11 valve rockers to solve issues with flats forming. | ||
| View original record | for R. To C.J. from E. c. to Hs. X4226 E2/M28.4.22. GOSHAWK 11. VALVE ROCKERS. X.4226. In connection with dealing with the flats which form on the rollers of the Goshawk 11 valve rockers, we would… | ||
| Scan059 | Issue of flates forming on Goshawk II valve rockers and a proposal to use a larger roller. | ||
| View original record | Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. c. to EP. X4226 E1/M28.4.22. GOSHAWK ll. VALVE ROCKERS. X.4226. To deal with the question of flates forming on the rollers of Goshawk ll. valve… | ||
| Scan060 | Alterations to cure oil leaks from Goshawk 11 valve gear covers. | ||
| View original record | To Da. from E. c. to CJ. Wor. c. to BY. Hs. c. to EP. X4226 E1/M9.5.22. X.4226 COSHAWK 11. ALTERATIONS TO CURE OIL LEAKS X.4225 FROM VALVE GEAR COVERS. " We send you herewith drawing No.LeC.1569… | ||
| Scan061 | Investigating and resolving oil leaks from Goshawk 11 engine valve gear covers. | ||
| View original record | Hs. from E. c. to CJ. Wor. c. to BY. EP. X4226 E5/M9.5.22. X.4225. GOSHAWK 11. OIL LEAKS FROM VALVE GEAR COVERS. X.4226 With regard to the above we feel that we ought to have more information as to… | ||
| Scan062 | Query seeking more particulars about a No.9 sticking valve on a 6-Goshawk-11 engine. | ||
| View original record | X4226 Hy. from Hs. Hs3/LG12.5.22. 6-GOSHAWK-11. X4086 X4226 (crossed out) In Waldrons report of the 10th.inst. he states that they were stopped on the road owing to No.9 valve sticking up. We should… | ||
| Scan063 | Issues with flats forming on Goshawk 11 engine rocker rollers and potential solutions. | ||
| View original record | To Hs. from R. c. to CJ. BY. c. to Hy. EP. X4226 R6/M19.5.22. GOSHAWK 11. LARGER ROLLERS FOR ROCKERS. X.4226. X.4229. With reference to the flats on the rollers it has not been clear as to whether… | ||
| Scan064 | The practical arrangement and degree of slack for rollers in a bore. | ||
| View original record | contd:- -2- and the bore is important. As for the degree of slack in the bore and on the faces, I should suggest as much as .010" be tried. You may find that with such a slack the rollers are always… | ||
| Scan065 | Goshawk 11 outlet water pipe with three connections and the associated drawing. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. c. to EP. X4226 E5/M30.5.22. GOSHAWK 11. OUTLET WATER PIPE WITH 3 CONNECTIONS. X.4225. X.4226. We send you herewith drawing No.LeC.1592 shewing… | ||
| Scan066 | Causes of valve troubles, wear, and material changes in post-war cars. | ||
| View original record | X4226 To R. from Hs. c. to CJ. c. to E. c. to De. c. to Dy. c. to Ef. c. to Hm. HS4/T2. 6. 22. X4432 X4226 X3315 VALVE TROUBLES ON POST WAR CARS. Valve troubles on post war cars consist of excessive… | ||
| Scan067 | Investigation into causes of increased valve wear, including faulty springs and fuel quality, and the testing of lubrication methods. | ||
| View original record | ontd. -2- pulled the valve over one way when fitted up. Or in other cases the coils have been wound unevenly so that, when compressed, the spring leans over and causes the valve to rub on one side. We… | ||
| Scan068 | Lubricating worn valve guides and a proposal for standardization of replaceable guides. | ||
| View original record | Contd. -3- Hs4/T1.6.22. fairly easily from a syringe and ensures that the felt is soaked with oil. Hm. who has mostly to deal with troubles caused by the worn valves and guides has tried a scheme of… | ||
| Scan069 | The poor quality of parts and spanners for the No. 4 Goshawk-11 tappets. | ||
| View original record | To BY. & Hs. from R. c. to CJ. Wor. Da. c. to E. EP. Hy. X4226 R1/M2.6.22. RE. No. 4-GOSHAWK-11 TAPPETS. X.4226. On readjusting the tappets of this engine I was very disappointed in the lasting… | ||
| Scan070 | Modification to the Goshawk 11 cylinder head to prevent cracking when running without water. | ||
| View original record | X4226 To Da. from E. c. to CJ. Wor. c. to BY. Hs. c. to EP. E1/M13.6.32. GOSHAWK 11 CYLINDER HEAD. MODIFICATION TO REDUCE LIABILITY OF CRACKING THE JACKET OF EXHAUST VALVE SEAT WHEN ENGINE IS RUNNING… | ||
| Scan071 | Failure of Goshawk rocker rollers during testing and recommending their discontinuation. | ||
| View original record | X.4226. To R. from Hs. c. to CJ. c. to E. c. to BY. c. to EP. c. to Wor. GOSHAWK - ROCKER ROLLERS X.4229. X.4226. Hs4/LH19.6.22. We have tested a set of the larger diameter rollers which have… | ||
| Scan072 | Potential design improvements for Goshawk tappet rollers to avoid flats. | ||
| View original record | To hs. from E. c. to CJ. Wor. c. to BY. EP. X.4226. E2/M16.6.22. GOSHAWK TAPPET ROLLERS. X.4226. We are anxiously waiting to know if you have yet achieved any improvement in avoiding flats on rollers… | ||
| Scan073 | Design and potential strengthening of a Goshawk valve gear rocker spindle. | ||
| View original record | To Da. from E. c. to CJ. Wor. c. to BY. Hs. EP. X.4226. E2/M20.6.22. GOSHAWK VALVE GEAR X.4226. We send you herewith drawing No. LeC.1599 shewing a valve gear rocker spindle with a small hole through… | ||
| Scan074 | Cancelling rollers on Goshawk engine valves and replacing them with new case-hardened rockers with curved ends. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to BY. c. to EP. (4226 R3/M21.6.22. RE. GOSHAWK ENGINE X.4229. X.4226. It is understood that we are cancelling rollers on the top of the valves because of the… | ||
| Scan075 | The design of the Goshawk valve rocker lever without a roller. | ||
| View original record | To BY. from E. c. to CJ. Wor. c. to ns. EP. V4226 E4/M5.7.22. GOSHAWK VALVE ROCKER LEVER WITHOUT ROLLER X.4226. We send you herewith drawing No.LeC.1608 giving the particulars of the above. You will… | ||
| Scan076 | On a suggested design by Mr. Royce for quieter Goshawk valve rockers using oil cushioning. | ||
| View original record | X.4226. To Hs. from E. c. to CJ. c. to Wor. c. to BY. c. to EP. E1/M19.7.22. GOSHAWK VALVE ROCKERS X.4226. The suggestion referred to by Mr. Royce in a recent memo, that he has made with a view to… | ||
| Scan077 | Comparison of valve, port, and cam specifications for Goshawk I and 11 engines. | ||
| View original record | Mr. Hives. from TMW. X4226 26.10.22. GOSHAWK 1 and 11. Valves, ports and Cams compared. Gos.1 valve ports 1.4" dia. Gos.11. " " 1.2 and 1.3" dia. Gos.1 valves 1.25" dia. Gos.11 " 1.20" " Gos.1 Exhaust… | ||
| Scan078 | Goshawk 11 engine with a burnt exhaust valve and reduced power, possibly due to incorrect valve timing. | ||
| View original record | X4226 PN19/DN/27.11.22. TO Hs. c. to Bk. FROM PN. 4 Goshawk 11. X.4226 In reply to your Hs5/LG/24.11.22, I have noted your remarks about the state of the engine of this chassis on arrival at the Works… | ||
| Scan079 | Instruction to despatch a burnt Goshawk exhaust valve for Mr. Royce's examination. | ||
| View original record | Y4226 BP. from Hs. c. to Chat. Hs4/LG2.12.22. We are sending into the Stores - 1 burnt Exhaust Valve - Goshawk. Will you please instruct the Stores to despatch this to W.W. for Mr. Royce's… | ||
| Scan080 | Cause of a burnt exhaust valve in a Goshawk engine and suggesting a radiator modification to act as a boiling water warning. | ||
| View original record | [Handwritten top center] X4226 [Handwritten top right] 2. To R. from Hs. c. to CJ. c. to E. c. to Da. c. to EY. [Top right] Hs3/LG2.12.22. [Strikethrough] 7-GOSHAWK-11. [/Strikethrough] [Handwritten,… | ||
| Scan081 | Telegram received by telephone regarding production delays, design modifications, and material requirements. | ||
| View original record | R.R. 144A (100B.) SE 867. 9.7.18 MP 193871 X4226 ROLLS-ROYCE, LIMITED. In Hives TELEGRAM RECEIVED BY TELEPHONE. Time Received: 4.10 Date: 18/12/22 To: Roycar Derby By: mB from: Chichester S.17… | ||
| Scan082 | Telegram message from Royce about increased metal in the head and valve angles. | ||
| View original record | ROLLS-ROYCE, LIMITED. TELEGRAM RECEIVED BY TELEPHONE. from 2 increased metal in head and thirty or forty-five degree valve fact Per post letter follows FROM Royce RECEIVED | ||
| Scan083 | Modifications to valves and spring drives for the Goshawk engine. | ||
| View original record | X4226 To BY & HS. from R. c. to CJ. BJ. c. to Wor. EP. R1/M1 8.12.22. RE. GOSHAWKS. X.4226 X.4222 X.4221 X.3551. (1) RE VALVES X.4226. With heavy bodies I fear we are asking for a lot of HP. for a… | ||
| Scan084 | Modifications to the half-time gears, magneto assembly, and exhaust valve reliability. | ||
| View original record | contd;- -2- In regard to the half time gears we are hoping that with a special oil jet upon the crankshaft pinion (and possibly with fan added) the half time unit drive will permit slack embodying all… | ||
| Scan085 | Relaying a telegram from Mr. Royce regarding Goshawk engine spring drives and valve design modifications. | ||
| View original record | Wor. c. to Hs. X.4226 BY2/P19.12.22. X.4226 X.4222 I have received the following wire from Mr. Royce :- "BAILEY GOSHAWK ONLY PRODUCE SPRING DRIVES SUFFICIENT TO PREVENT DELAYS IN DELIVERY stop SENDING… | ||
| Scan086 | Outlining proposed modifications to Goshawk 11 engine valves to reduce operating temperature following a burnt valve incident. | ||
| View original record | X,4226. To Hs. from R. c. to CJ. Wor. c. to BY. EP. GOSHAWK 11. VALVES. X.4226. R1/M9.12.22. With reference to the recent burnt valve we have had on 7-Goshawk, I think we might try the following… | ||
| Scan087 | Valve life, investigating seat angles and clearance settings for Goshawk & 40/50 engines. | ||
| View original record | To Hs. from R. c. to CJ. BJ. c. to FN. Wor. c. to BY. HM. c. to CY. EP. X4226 R9/M27.12.22. RE. GOSHAWK & 40/50 VALVES X.2764. X.4226 You will remember that I suggested that possibly valves were not… | ||
| Scan088 | High rate of valve spring failure in a new Riviera car. | ||
| View original record | X4226 To EY. from BJ. BJ12/H19.3.23. Copies to: Mr. Hs. Hmr. H. N. Re 4-YG - Riviera Car. This car was delivered as a new car and taken to France by H. on the 8th February. He reports on the 17th… | ||
| Scan089 | Tappet adjustment clearance issue for the 20 HP engine and a recommendation for a new adjustment type. | ||
| View original record | X.4226. To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs2/LG28.5.23. 20 HP. - TAPPET ADJUSTMENT. X.4226. When the cam is on the top of its lift, there is very little clearance before either… | ||
| Scan090 | Issue of bent push rods on a 20HP engine and potential solutions. | ||
| View original record | X.4226 To BJ. from R. c. to CJ. c. to BY. c. to Hs. c. to EP. R1/M30.5.23. 20-HP. BENT PUSH RODS X.4226. In reply to your memo. BJ11/H25.5.23., probably the clearance as actually made in valve spring… | ||
| Scan091 | Tappet adjustment and valve clearance on the Goshawk 11 engine. | ||
| View original record | To R. from E. c. to CJ. c. to Hs. c. to BY. X.4226. E2/M31.5.28. GOSHAWK 11. TAPPET ADJUSTMENT X.4226. Regarding Mr. Hives statement that there is very little clearance on the Goshawk before either… | ||
| Scan092 | Valve and spring clearances on the Goshawk II engine concerning bent tappet rods. | ||
| View original record | X4226 To Hs. from BJ. Copies to RP EV BJ3/H4.6.23. Goshawk II - Bent Tappet Rods. ____________________ The following is a copy of R4/ML.6.23, for your information:- "Mr. Elliott says:- 'Regarding Mr.… | ||
| Scan093 | On tappet adjustment for the Goshawk 11 engine, detailing new clearances. | ||
| View original record | X4226 BJ. Hs. BY8-P7.6.23. GOSHAWK 11. TAPPET ADJUSTMENT. In connection with BJ3/H4623 and R1/M30583, we have gone very carefully through the method of limiting, and find that whilst our limiting,… | ||
| Scan094 | Modification details for valve spring top and bottom washers on the 20 HP chassis. | ||
| View original record | Y4226 c. to Hs. BY/Shn8/DB.11.6.23. RE 20 HP CHASSIS - VALVES & FITTINGS - SEC:5060. Under alteration No.7760/E, we have made the following modification to E.51088 - Valve Spring Top Washer and to… | ||
| Scan095 | Modification to the chamfer on valve spring washers for the 20 HP chassis. | ||
| View original record | [REDACTED] c. to Hs. Y4226 BY/Shn1/DB.14.6.23. RE 20 HP CHASSIS - VALVES & FITTINGS - SEC:5060. 0/50863. Further to our memo BY/Shn8/DB.11.6.23, regarding the chamfer on the Valve Spring Washers… | ||
| Scan096 | Design specifications and material considerations for improved engine valves. | ||
| View original record | To Rg. from Hs. from R. c. to CJ. and BJ. V4226 R2/M20.6.23. VALVES. X.4226 X.2764 X.3616 Regarding the improved valves for the engines, I am getting Mr. Elliott to set out what we think an ideal… | ||
| Scan097 | Modifications to the Goshawk engine valve timing, including cam angles, lap, and clearances. | ||
| View original record | To Hs. from R. c. to CJ. OY. EP. 4226 R4/M6. 7. 23. GOSHAWK VALVE TIMING. X.1770 X.4226 I understand from the experiments on Gos.l. that it is advisable to somewhat modify the valve timing on Goshawk… | ||
| Scan098 | Cause of burning exhaust valves and proposing modifications to the valve seat angle and shape. | ||
| View original record | To Hs. from R. c. to Wor. OY. c. to BY. EP. RG. 74226 R3/M6.7.23. RE. VALVES. X.3616 X.2764 X.4226 We were pleased to hear that you were able to reproduce the burning of exhaust valves as occasionally… | ||
| Scan099 | Test results on the Goshawk I engine, specifically the effect of valve timing on power. | ||
| View original record | EY. from Hs. EP. ---------------- X4226 X5310 Hs3/LG9.7.23. X4226 We attach herewith prints showing the effect of Valve Timing on Power. These were taken on the original Goshawk 1. engine which has… | ||
| Scan100 | Power curve comparison chart showing BHP vs RPM for a 1G.T. engine with two different valve timing configurations. | ||
| View original record | POWER CURVE COMPARISON X AVERAGE GOSHAWK II o BEST INLET & EXHAUST TIMINGS ON 1G.T. ENGINE 1G.T. ENGINE TEMP. 80°C. B.H.P. R.P.M. BEST INLET & EXHAUST TIMINGS COMBINED I.C. 32° I.O. 5° E.O. 42° E.C.… | ||
| Scan101 | Two graphs showing the effect of valve timing on Brake Horse Power for Engine I.G.I. | ||
| View original record | Main Titles: EFFECT OF VALVE TIMING ON POWER BRAKE HORSE POWER Top Graph Section: INLET TIMING. FIXED. EXHAUST VARIED. Y-Axis Values: 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41,… | ||
| Scan102 | Graph showing the effect of various inlet valve timings on brake horse power against RPM for engine 1G1. | ||
| View original record | EFFECT OF VALVE TIMING ON POWER ENGINE 1.G.1. EXHAUST VALVE TIMING FIXED. INLET TIMING VARIED. BRAKE HORSE POWER R.P.M EXHAUST TIMING (CONSTANT) E.C. 40° E.O. TAPPET CLEARANCE - .010 INLET: I.C. 5°… | ||
| Scan103 | Graph plotting Brake Horse Power against RPM to show the effect of varied exhaust valve timing on engine I.G.I. | ||
| View original record | BRAKE HORSE POWER EFFECT OF VALVE TIMING ON POWER. ENGINE I.G.I. INLET VALVE TIMING FIXED: EXHAUST TIMING VARIED. R. P. M. INLET TIMING (CONSTANT) I.C 45° I.O 5° TAPPET CLEARANCE .010 EXHAUST ______… | ||
| Scan104 | Comparison of engine valve timing results for various Goshawk engine and camshaft combinations. | ||
| View original record | E. from Hs. X4226 Hs1/LG16.7.23. GOSHAWK TIMING. X.4229 X.4238 X3942 X.4226 X.3310 The results given on the Charts were all taken on Goshawk 1. engine with Goshawk 1. Cams. The average Goshawk 11… | ||
| Scan105 | To determine the accuracy of checking valve timing by hand compared to when the engine is running. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X4226 EXPERIMENTAL REPORT. COPIES TO: R.C.J. WOR By. E. Da. EP. EN-OK Expl. No. X.1770 / X.4226. REF. HS3/LG16.8.23. OBJECT OF TEST. To determine whether… | ||
| Scan106 | Engine timing variation and gear rattles. | ||
| View original record | R.R. 493A (40 H) (EL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4226 REF: Hs3/LG16.8.23. Variation in Timing. As the engine speed is increased, the valve timing becomes slightly later.… | ||
| Scan107 | The expansion of Goshawk 11 exhaust valves under running conditions. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H.,D. X4226 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 4226 4238 REF. Hsl/LG1.9.23. OBJECT OF TEST. To find the expansion of… | ||
| Scan108 | Comparing the expansion properties of different engine valve types. | ||
| View original record | R.R. 403A (40 H) (SL 12 18-7-23). J.H. D. EXPERIMENTAL REPORT Expl. No. 4226 REF: He1/LG1.9.23. Umbrella shaped Valve.45° - expands .010". After running, this valve shows a very cool head, but a very… | ||
| Scan109 | Recommendation to modify the current valve design to 45° angle seats and send samples. | ||
| View original record | contd:- -3- Hs1/LG1.9.23. Our recommendation is that we continue to use the present design of Valve modified to 45° angle seats. Scheme of proposed modification attached. We are sending a sample of… | ||
| Scan110 | Scheme drawing comparing valve seatings for 20HP and 40/50 models. | ||
| View original record | SCHEME No 494 15° 45° 20 HP VALVE SEATINGS 30° 45° 40/50 SCALE 10% SCHEME NO 494 ROLLS-ROYCE LTD. NIGHTINGALE RD 1-DEC-19 DERBY | ||
| Scan111 | Despatch of two sample valves to the Stores for examination. | ||
| View original record | X4226 BP. from Hs. C. to Mr. Chatwin. Hs3/LGl.9.23. We are sending into the Stores for despatch to R.W.W. 2 sample valves. Will you please issue the necessary instructions to Stores. These are being… | ||
| Scan112 | Modification to the 20 HP Chassis valve seating, changing the angle from 15° to 45°. | ||
| View original record | X4226 BY/Shn1/DB.1.9.23. C. to Hs. U.W. RE 20 HP CHASSIS - VALVE SEATING. We attach herewith blueprints of - E.52936 - Valve. E.52952 - Cylinder Head. showing the modification necessary to existing… | ||
| Scan113 | Suggesting an extension on the valve guide for the Goshawk 11 engine, referencing drawing No. Lec.1760. | ||
| View original record | To BY. from E. c. to CJ. Hs. EP. X.4226. E2/M6. 9. 23. GOSHAWK 11. EXTENSION ON VALVE GUIDE. X.4226. We send you herewith drawing No.Lec.1760 shewing a suggestion regarding obtaining extra… | ||
| Scan114 | Proposal to standardise 45° angle seats on valves to prevent them from burning. | ||
| View original record | R.R. 755 (10M) (SL 72 18-7-23) MP 274954s. (11) /4226 COMPLETED 14.9.23 STANDARDISATION of CHASSIS PARTS. Date 1.9.23. Description of Parts: 45° angle seats on valves Origin: To avoid valves burning.… | ||
| Scan115 | Modifications to the 20 HP chassis valves and fittings to prevent fouling of rocker arms. | ||
| View original record | X4226 c. to Hs. BY/Shn7/DB.5.9.23. RE 20 HP CHASSIS - VALVES & FITTINGS - SEC:5060. The Test Dept: have pointed out to us that when the Top Valve Spring Washers bed themselves on the split cone… | ||
| Scan116 | Causes of excessive engine bedding due to undersized valves and the subsequent design alterations to rectify the issue. | ||
| View original record | -2- BY/Bhn7/DB.5.9.23. Contd. chocking before full lift disappears. Since writing the above, the Inspection Dept: have reported that the engine on which excessive bedding had taken place, was due to… | ||
| Scan117 | Faulty valves and fittings on the 20-HP Chassis and arranging for replacement parts. | ||
| View original record | Y4226 BY/ c. to Hs. EP/Thn9/H7.9.23. re. 20-HP Chassis.Valves & Fittings. With reference to your memo BY/Shn7/DB5.9.23., instructing certain modifications to be carried out on all further chassis… | ||
| Scan118 | Standardisation document regarding the use of Silchrome steel for valves on 40 HP and 20 HP chassis. | ||
| View original record | STANDARDISATION of CHASSIS PARTS Date 30.10.23. X No.2764 4226 Drawing No. Part List Description of Parts. 40 HP. and 20 HP. CHASSIS. MATERIAL FOR VALVES. Origin: To increase life. Experimental Test… | ||
| Scan119 | Investigation into burnt engine valves on a 20-HP demonstration car. | ||
| View original record | X4226 BM c. Hs. EP1/H28.12.23. re. 20-HP. Engine Valves 'Burning'. The Demonstration Class 20-HP car was brought to us for attention as the engine was very unsatisfactory and on investigation the… | ||
| Scan120 | Letter concerning the failure of 20-HP valve springs due to a suspected batch of faulty material. | ||
| View original record | BY, c. Hs. c. SFT X4226 EP2/H14.1.24. re. 20-HP Valve Spring Breakages. We send you herewith a valve spring which has failed. This was taken off chassis No. 768, a new chassis on test. The spring… | ||
| Scan121 | The investigation into the burning of exhaust valves on the 20-HP chassis. | ||
| View original record | Hs. X4226 EP14/H18.1.24. 20-HP Chassis. Burning of Exhaust Valves. As requested, we have tried to produce the burning of the valves on the unit test bed, but we have only been able to do this by… | ||
| Scan122 | Repair of a valve seating and the study of a faulty cylinder. | ||
| View original record | - 2 - EP14/H18.1.24 a few moments grinding in with the new valve soon made the seating O.K. We suggest that in cutting up the faulty cylinder which has now been returned to you the question of even… | ||
| Scan123 | Inadequacy of a special tool for removing valve springs on a 20 HP chassis. | ||
| View original record | V4226/ EP. C. Hs. ------ BY/C11/H. 22. 1. 24. ---------- 20. HP. CHASSIS. SPECIAL TOOL FOR REMOVING VALVE SPRINGS. ------------------------------------------- In reply to EP/Thn1/H. 15. 1. 24, we do… | ||
| Scan124 | Burnt valves on a 20HP demonstration car and the consideration of buying improved valves made from Silchrome steel. | ||
| View original record | EP. c. Hs. V4226 BY10-P22.1.24. 20HP. DEMONSTRATION CAR. BURNT VALVES. Referring to EP1/H281223, an examination of the valve does not give me any idea of the cause of the trouble. It appears to be… | ||
| Scan125 | Repeated failure of valve springs on 20-HP cars during testing, requesting new inspection methods. | ||
| View original record | Y4226 c. Hs. EP/H28.1.24. re. 20-HP Faulty Valve Springs. Further to my memo EP2/H14.1.24. I am today sending you two further valve springs which have broken on 20-HP cars on test, i.e. Nos. 756 and… | ||
| Scan126 | The fourth instance of a faulty valve spring breaking on a 20-HP test car, number 792. | ||
| View original record | c. Hs. X4226 EP/Thn5/H30.1.24. re. 20-HP Faulty Valve Springs. With further reference to our EP2/H14.1.24 and EP1/H28.1.24, we are sending you a further valve spring which has broken on a car on test,… | ||
| Scan127 | Modifications to a 20-HP air valve to resolve a sticking issue. | ||
| View original record | X4226 SPT. c. Mr. Matthews, Works. c. Mr. Ellis. c. BY. c. HS. EP7/H25.6.24. re. 20-HP Air Valve Sticking. Further to our EP15/H18.6.24, Mr. Ellis has now demonstrated to us an Air Valve which appears… | ||
| Scan128 | The despatch of a Valve Lifter for a 20 HP car for inspection. | ||
| View original record | X.4226 To BP. from Hs. c. to Mr. Chatwin - Stores. Hs3/LG26.6.24. RE. 20 HP. CAR. We are sending into the Stores for despatch to Mr. Elliott, West Wittering - 1 Valve Lifter. This tool is being sent… | ||
| Scan129 | Works order for the dispatch of a valve lifter for a 20 HP Car for inspection. | ||
| View original record | R.R. 6158 (50T Sets.) (SE 592 13-3-18) MP 190785 New Aires. *4226 72694 WKS. ORDER No. CHASSIS No. 20 H.P. Car Customer's Order No. HS3/LG26.6.24 Date 26th. June 1924 Customer's No. Owner's Name… | ||
| Scan130 | New 20 HP valve lifter tool to enable changing valve springs without dismantling the cylinder head. | ||
| View original record | [Handwritten: X4226] To E. from Hs. Hs2/LG26.6.24. 20 HP. VALVE LIFTER. [Handwritten: X5911 (crossed out) X4226] We are sending to you a 20 HP. Valve Lifter tool. This tool has been got out to enable… | ||
| Scan131 | Simplifying the Goshawk II engine's valve spring changer tool. | ||
| View original record | To BY. from E. c. to CJ. HS. X4226 E2/M2. 7. 24. X.591. X.4226 GOSHAWK 11. VALVE SPRING CHANGER TOOL. Referring to the tool which we received from Mr. Hives for changing Goshawk valve springs without… | ||
| Scan132 | Usability issues of the Goshawk 11 valve spring changing tool and the need to retain the existing cramp. | ||
| View original record | E. from HS. c. to BY. X4226 Hs1/LG7.7.24. RE. GOSHAWK 11. VALVE SPRING CHANGING TOOL. (Handwritten, crossed out: X4220, X591) With reference to LeC.1890. We have used for years a similar tool as shewn… | ||
| Scan133 | The inclination of sparking plugs on the Goshawk I engine. | ||
| View original record | To Hs. from E. c. to R. HY. X4226 E1/M12.7.24. RE. GOSHAWK 1. X.4226 X.3481 All WW. drawings shew the sparking plugs on the above engine inclined towards the camshaft drive end, e.g. the front end of… | ||
| Scan134 | Cause of failure in 20 HP valves and comparing them with High Silicon and Stainless type valves. | ||
| View original record | X4226 AH. c. Hs. e. Wer. BY17/H. 17. 7. 24. 20 HP. VALVES. --------------- I am sending you herewith a 20 HP. valve which shows the characteristic failure we have had with this type of valve for the… | ||
| Scan135 | Difference between Quickstep and High Silicon Valve steel from Firths'. | ||
| View original record | - 2 - BY17/H. 17. 7. 24. ---------- Incidentally, it means that having now conceived an intelligent reason for the difference between the Quickstep and the High Silicon Valve, my nervousness in regard… | ||
| Scan136 | Burnt exhaust valves on 20-HP cars, specifically from chassis GAK-40, and subsequent investigation. | ||
| View original record | 4226 BY c. Hs. c. Hl. EP2/Hl9.7.24. re. 20-HP. Burnt Exhaust Valves. Further to our previous memos pointing out the trouble we are experiencing with exhaust valves burning on 20-HP. cars in service… | ||
| Scan137 | Hardness test results for a 20 HP valve from chassis 89-K6. | ||
| View original record | By. c. to Hs. c. to Wor. X4226 H111/EF7824. Laboratory. Re 20 HP. Valve from Chassis 89-K6, submitted for hardness tests. As requested in your memo. By17/H.17.7.24, we have cut a section from the… | ||
| Scan138 | Chart showing the results of Brinell hardness tests on a component. | ||
| View original record | Chart of Brinell tests made on Rockwell Hardness Tester with 1/16" steel ball and a load of 150 Kg. Numbers on diagram: 381 227 202 249 194 231 242 247 250 A B Key to position of section - shaded part… | ||
| Scan139 | Laboratory report on hardness tests conducted on a burnt exhaust valve from a 20 HP, Chassis GAK-40. | ||
| View original record | 4226 HP. c. By. c. Hs. c. Wor. H12/FW.12.8.24. Laboratory. Re. 20 HP. Chassis Burnt Exhaust Valve (from Chassis GAK-40). As requested by By we have made a series of hardness tests on a section cut… | ||
| Scan140 | Chart of Brinell hardness tests on a component section using a Rockwell Hardness Tester. | ||
| View original record | Chart of Brinell tests made on the Rockwell Hardness Tester with 1/16" steel ball and a load of 150 Kg. 286 286 244 256 286 231 193 214 202 207 207 A B Key to position of section - shaded part… | ||
| Scan141 | Page featuring a 'RECEIVED' stamp and a 'ROLLS-ROYCE, LIMITED PRINT ROOM' stamp. | ||
| View original record | RECEIVED H9 19 14 AUG 1924 ROLLS-ROYCE, LIMITED PRINT ROOM, 12 AUG. 24 DERBY | ||
| Scan142 | Improved valves for 20-HP cars, clarifying previous instructions and material specifications. | ||
| View original record | X4226 C. Hs. EP10/H25.3.25. 20-HP Cars. Improved Valves. With reference to your PN5/DN23.3.25. instructions were issued some time ago to the Depots for valves of the improved material to be fixed in… | ||
| Scan143 | The availability of new burn-proof steel alloy valves for a customer's 20 HP car. | ||
| View original record | X4226 PN5/DN23.5.25. TO Hs FROM PN c. to EP I was under the impression that all valves made by us at the present time, were of the new steel alloy (name forgotten), which we have found to be proof… | ||
| Scan144 | Requesting a model of three varieties of tappet adjusting screws to be made for inspection. | ||
| View original record | BY. FROM E. C. to SG. WOR. HS. X4256 E2/14.6.31. TAPPET ADJUSTING SCREWS - J. 1. We send herewith LeC. 2916. shewing 3 varieties of tappet adjusting screws. Would you kindly have these made up into a… | ||
| Scan145 | Issue with self-adjusting tappets (LeC. 2808) where reserve oil is not retained at high speed, causing noise. | ||
| View original record | HS: FROM E. X4226 E1/MS.6.31. Copy to SG. " WOR. " BY. SELF ADJUSTING TAPPETS. LeC. 2808. A propos of our telephone conversation, and with further reference to self adjusting tappets, we have been… | ||
| Scan146 | Proposed exhaust pipes for the Goshawk engine, referencing 'N' Scheme 683 and using model LeC.1315 for testing the 'Kite' exhaust system. | ||
| View original record | X.3588 X4238 To R from DA, Copy to BN. Copy to KFC. DA3/CB11-12-20. X.3588 Re "Goshawk" Exhaust System. ----------------------- We send herewith a print of "N" Scheme 683 the proposed exhaust pipes… | ||
| Scan147 | Proposed arrangements for the 'Goshawk' exhaust system, with references to modifications based on the 40/50 model. | ||
| View original record | X.3588 To R from DA. Copy to BN. Copy to EFC. DA4/CB15-12-20. X.3588 Re "Goshawk" Exhaust System. --------------------------- We send herewith a print of "N" Scheme 685 shewing the proposed… | ||
| Scan148 | Mr. Royce's criticisms and suggested modifications for the 'Goshawk' exhaust system. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to EFC. c. to Hs. X3588 X.3588. RE "GOSHAWK" EXHAUST SYSTEM. Referring to the above, would you kindly note Mr. Royce's criticisms set out as follows, and… | ||
| Scan149 | List of points and required modifications for manifold, exhaust pipe, and silencer designs, referencing specific schemes. | ||
| View original record | Contd. -2- E5/G30.12.20. covering. The shape of this pipe should follow the lines of the one shewn for the "Buzzard" (Lec.1238) and these lines have been approximately indicated in pencil on blue… | ||
| Scan150 | Design notes outlining modifications for end plates, a silencer jacket, and a swan neck pipe support, including a sketch and instructions from Mr. Royce. | ||
| View original record | R.R. 584A (150 T) S.H. 159, 11-8-20; G. 9800 Contd. -3- E5/G30.12.20. The only other points on this scheme refer to the end plates; these should be made from sheet metal press-ings, not forgings, and… | ||
| Scan151 | Instructions for positioning the exhaust pipe and silencer according to provisions laid down by Mr. Royce. | ||
| View original record | Contd. -4- E5/G30.12.20. exhaust pipe a little further off than indicated by the pencil line. The correct position of the silencer is not intended to be indicated on the returned prints, but required… | ||
| Scan152 | Modifications and alternative proposals for the Goshawk I engine exhaust system. | ||
| View original record | To R from DA. Copy to BN. Copy to EFC. X 3588 DA10/CB17-1-21. Goshawk I - Exhaust System. -------------------------- We have modified this exhaust system in accordance with Mr Elliott's E5/G13-12-20,… | ||
| Scan153 | The adaptation of an exhaust manifold for the Goshawk engine. | ||
| View original record | DA10/CB17-1-21. contd. The present Goshawk has an exhaust manifold based on "N" Scheme 684 but built up out of steel and welded, in order to get it quickly, with a flange connection at the bottom. We… | ||
| Scan154 | Modifications to the Goshawk exhaust system and related component schemes. | ||
| View original record | X/3588 To -- from BA. Copy to Mr. [illegible] (1 print). Copy to Mr. [illegible] (1 print). Copy to NPC. DA9/CH17-18-21. X 3588 GOSHAWK EXHAUST SYSTEM. -------------------------------- The present… | ||
| Scan155 | Design alterations for the 'Goshawk I and II' silencer system. | ||
| View original record | To DA. from E. Copy to Co. MCR. HS. DY. MPG. X.1238 / X.35/8 RE "GOSHAWK I and II" - SILENCER The designs in connection with the silencing system will apply in principle to both "Goshawk I" and II.… | ||
| Scan156 | List of instructions for modifying a silencer pipe and diaphragm assembly, including a diagram. | ||
| View original record | To DA. from E. -2- E2/GG/1/21 Contd. (8) The holes for the diaphragms should be re-arranged. They should be fewer in number, and larger in size, and spread in a double line round the outer edge of the… | ||
| Scan157 | Revised drawings for the Goshawk I & II silencer and exhaust system. | ||
| View original record | R.R. 253A (100 T) (S.H. 783. 10-12-20) G 2747 To R from DA. c. to BH. c. to E.O. RE GOSHAWK I & II - SILENCER. We send herewith drawings of the Silencer and Exhaust System revised in accordance with… | ||
| Scan158 | The revised 'Goshawk' engine exhaust pipes, including initial design decisions and removal instructions. | ||
| View original record | X4238 To Da. from E, c. to CJ. c. to Wor. c. to Hs. c. to By. c. to EFC. E4/G4.12.20. X.4238. RE REVISED "GOSHAWK" - EXHAUST PIPES. We send you herewith drawing No. LeC.1315 shewing the above. Mr.… | ||
| Scan159 | Suggested adaptation of the Goshawk exhaust system for the 'Kite' model. | ||
| View original record | X.4238 To R from DA. Copy to BN. Copy to EFC. EFC DA1/CB18-12-20. X.4238 Re "Kite" Exhaust System. ------------------------ We send herewith a print of "N" Scheme 696 shewing the suggested adaptation… | ||
| Scan160 | Extract discussing design updates for the 'RE GOSHAWK II' engine. | ||
| View original record | R R 235A (100 T) (S H. 139. 11-8-20) G. 2800 x4238 To Ds. from R. Extract from R3/G18.1.21. X.3481. RE GOSHAWK II (3) We expect to send you the drawing of the latest detachable head for the cylinders.… | ||
| Scan161 | Simplification of the Goshawk 11 engine's induction and exhaust pipe attachments. | ||
| View original record | X.4238 To Da. from E. c. to CJ. X.4227 c. to WOR. X.4238. c. to Hs. c. to BY. c. to EFC. E3/G24.2.21. RE. GOSHAWK 11 INDUCTION AND EXHAUST PIPES. We send you herewith LeC.1356 shewing the above. For… | ||
| Scan162 | Alterations to the Goshawk I and 11 silencer system. | ||
| View original record | To Da. from E. c. to CJ. c. to WCr. c. to Hs. c. to BY. c. to EFC. X 4238 X.3588 "GOSHAWK 1 AND 11" SILENCER. The designs in connection with the silencing system will apply in principle to both… | ||
| Scan163 | Specifications for the redesign and construction of a silencer, detailing changes to diaphragms, pipes, and assembly methods. | ||
| View original record | R.R. 821A (100 T) (S.H. 768, 10-12-20) G. 1947 contd. -2- E2/G9.3.21. 1½". This will necessitate some slight redesigning of the union to the manifolds on the engine and the fish-tail outlet on the… | ||
| Scan164 | Sending revised drawings for the Goshawk I & 11 engine's silencer and exhaust system. | ||
| View original record | X.4238 To R. from Da. c. to BN. c. to E.O. DeA/LG6.4.21. X.3588 RE GOSHAWK 1 & 11 SILENCER. X.4238 We send herewith drawings of the Silencer and Exhaust System revised in accordance with Mr. Elliott's… | ||
| Scan165 | Issues with screwed exhaust joints on the Goshawk 11 engine and recommending a solution. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. 4238 Hs2/LG29.9.21 4238 GOSHAWK 11. EXHAUST JOINTS. The screwed exhaust joint on the manifold is the type which the end of… | ||
| Scan166 | Telegram confirmation about reducing Goshawk engine roar using a combined silencer. | ||
| View original record | X4238 7th. Oct. 1921. CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. ROYCAR DERBY. X.4227 X.4238 X.4219. HIVES RE GOSHAWK SUGGEST ROAR CAN ONLY BE REDUCED BY EFFECTIVE COMBINED SILENCER ON… | ||
| Scan167 | Confirmation of a telegram telephoned to Chichester regarding engine roar and a suggested exhaust modification. | ||
| View original record | R.R. 235a (100 T) (S.H. 798, 10-12-20) G. 2948 X4238 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 4th. Nov.1921. X. 4226 /1238 X. 4227 ROYCAR DERBY. HIVES CONCLUDE ROAR CAUSED BY PRESSURE… | ||
| Scan168 | The Goshawk 11 magneto drive, detailing its installation and required modifications. | ||
| View original record | To Wa. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. X4238 E1/G5.11.21. X.6550 (struck out, X.4238 written above) - GOSHAWK 11. MAGNETO DRIVE. (X.4357) We send you herewith drawing No.LeC.1479… | ||
| Scan169 | Recommendation for a stay for the exhaust pipe to prevent vibration and noise against the petrol tank. | ||
| View original record | X.4238. Extract from Hsl/LG15.11.21. STAY FOR EXHAUST PIPE X.4238. The exhaust pipe for the back axle vibrates badly and sometimes makes a noise against the petrol tank. We think that it should be… | ||
| Scan170 | The design of the induction and exhaust pipe for the Goshawk 11 engine. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to BY. X4238 E1/G19.11.21. X.4227 X.4238 - INDUCTION AND EXHAUST PIPE - GOSHAWK 11. We send you herewith drawing LeC.1485 shewing the induction pipe… | ||
| Scan171 | Criticisms and potential improvements for the Goshawk carburetter with silencer. | ||
| View original record | X4238 Extract from R7/M30.12.21. X.4219. (11) GOSHAWK CARBURETTER WITH SILENCER. X.4238 X.4228 With reference to Mr. Hives( criticisms that the new Goshawk carburetter with silencer is noisier than… | ||
| Scan172 | Modifications to the Goshawk 11 engine's induction and exhaust pipes. | ||
| View original record | To BY. from E. c. to CJ. c. to Wor. c. to Hs. X4238 E2/M18.3.22. GOSHAWK 11. INDUCTION & EXHAUST PIPES. X.4236 X.4227. With reference to the modifications necessary to the standardised form of… | ||
| Scan173 | Improvements to the Goshawk throttle and carburetter. | ||
| View original record | To hs. from R. c. to CJ. BJ. c. to E. EP. c. to BY. Hy. X4238 E2/M27.7.22. GOSHAWK THROTTLE X.4238. X.4228. I am extremely pleased to hear that you have discovered that there is a distinct advantage… | ||
| Scan174 | Appropriate metal for covering Goshawk engine exhaust/inlet tubes and resolving procedural conflicts with dynamometer testing. | ||
| View original record | X4238 Hs. from BY. c. Wa c. EB BY1-P28.8.32. RECEIVED 28 AUG 1932 GOSHAWK 11. RE COVERING OF EXHAUST & INLET TUBES X4238 WITH "BLOWN METAL" I notice that we have only received pipes covered in… | ||
| Scan175 | Excessive oil consumption and smokey exhaust in Goshawk engines, with a proposed solution of beveling piston rings. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. X4238 Hs3/LG9.10.22. GOSHAWK 11. X.4134. X.4224. X.4238 There have been one or two cases of excessive oil consumption on Goshawk engines. The… | ||
| Scan176 | Adoption of a bevelled scraper ring for maximum efficiency over other components. | ||
| View original record | contd:- -2- we adopt the scraper ring with a bevel. It would appear better to obtain the maximum efficiency from the scraper ring rather than to have to resort to tightly fitting bearings, oil baffle… | ||
| Scan177 | Requesting a longer throttle control rod for a Goshawk engine and inquiring about a sparking plug spanner. | ||
| View original record | To Hs. from E. X4239 E1/M25. 8. 22. X.4239. With reference to the Goshawk at WW. the throttle control rod is insufficiently long and it is not possible to close the throttle at all, also the levers… | ||
| Scan178 | Drumming noise and supposed noisy exhaust on a 20 HP Landaulet trials car. | ||
| View original record | X4238 S/W. Hs. Spl/H/25.11.22. 20 - HP. Landaulet Trials Car X.4258 [crossed out] X.3730 [crossed out] ------------------------------------------------- BJ. has complained about a drumming noise heard… | ||
| Scan179 | The investigation into Goshawk exhaust pipe drumming on closed cars. | ||
| View original record | X4238 PN8/DN/23.11.22. TO Hs. c. to BJ. FROM PN. Goshawk Exhaust. I understand that arising out of certain criticisms recently with Closed Cars especially, you are going into the matter of altering… | ||
| Scan180 | The challenges in silencing the 20 HP exhaust and attributing booming issues to the car's bodywork. | ||
| View original record | To PN. from Hs. c. to BJ. c. to EP. X4238 Hs2/LG24.11.22. COSHANK EXHAUST. Referring to your PN8/UN23.11.22. We cannot give any promise with regard to making any marked improvement in the exhaust… | ||
| Scan181 | 'Goshawk' exhaust system on 20 HP cars, addressing noise levels and experiments with a silencer cut-out. | ||
| View original record | Sp. from Hs. X.4238 Hsl/LG27.11.22. GOSHAWK EXHAUST. We do not anticipate being able to improve the Exhaust noise on the 20 HP. cars. We consider that the noise from the exhaust when judged from an… | ||
| Scan182 | Goshawk exhaust noise issues, particularly 'booming' sounds in relation to different coachbuilt bodies. | ||
| View original record | Y4238 PN3/DN/28.11.22. TO Hs. c. to BJ. FROM PN. Goshawk Exhaust. In reply to your Hs2/LG24.11.22, I can quite appreciate what an enormous amount of work has been done with a view to getting the… | ||
| Scan183 | Investigation into a severe 'booming' noise on a limousine trials car, attributing the cause to the exhaust note rather than axle noise. | ||
| View original record | X4238 To Hs. from Da/Ev. c. to Da. c. to Sp. Da/EV2/M5.12.22. RE. LIMOUSINE TRIALS CAR X.4256. X.4238 The limousine trials car is apparently useless due to it being a dreadful boomer, and up to the… | ||
| Scan184 | Various engine bench tests attempting to reproduce and understand the failure of exhaust valves on a 20 HP chassis. | ||
| View original record | x4238 To R. from Hs. c. to CJ. c. to H. c. to Da. c. to BY. Hel/LG27.12.22. EXHAUST VALVES FOR 20 HP. CHASSIS. x4238 We carried out a number of tests on the engine bench test in order to reproduce the… | ||
| Scan185 | Pre-ignition issues, its effect on exhaust valves, and ongoing engine tests. | ||
| View original record | contd:- -2- [REDACTED] We know from past experience that it is necessary for the pre-ignition to start at a certain point on the compression stroke in order to produce the worst results, for instance,… | ||
| Scan186 | Report diagnosing engine pre-ignition issues in a 20 HP car. | ||
| View original record | contd:- -3- They go in the same manner as the sample 20 HP. car which was sent to W.W. It is most difficult to explain the cause because the engines have been put through the most severe tests and… | ||
| Scan187 | Refuting claims about unacceptable noise levels in a limousine trials car by comparing it to other models. | ||
| View original record | To Da/Ev. from Hs. c. to Da. c. to Sp. X4238 Hs2/LG9.12.22. LIMOUSINE TRIALS CAR. X4238 X3730 With reference to your memo. Da/Ev2/M5.12.22. We do not agree with the statements you make. We agree, of… | ||
| Scan188 | Letter responding to feedback about improving an exhaust system. | ||
| View original record | contd:- -2- We should be quite pleased to receive any suggestions as regards how we can improve the exhaust system, but we think it is foolish for you to make sweeping statements with such a short… | ||
| Scan189 | Latest type of oiling arrangement for the 20 HP model and the trade-off between smoky exhaust and engine lubrication. | ||
| View original record | x4238 Wor. c. to Hs. EP4/H30.12.22. RE. 20 HP. LATEST TYPE OILING ARRANGEMENT. X.4224 X.4238 X.4219. With reference to your Wor2/M29.12.22, attaching BJ15/H28.12.22, and previous correspondence on… | ||
| Scan190 | Test results for a 20 HP green limousine, concluding no chassis alteration is needed and defending the exhaust noise level. | ||
| View original record | X4238 Wor. from Hs. c. to EP. Hs5/LG9.1.23. 20 HP. CARS. ~~X3730~~ X4238 With reference to BJ's memo. in connection with the green limousine car. We consider that the results of all the tests so far… | ||
| Scan191 | And comparing Goshawk engine timing data with different cam configurations. | ||
| View original record | E. from Hs. X4238 Hs1/LC16.7.23. GOSHAWK TIMING. X.4229 X.4226 X.4238 X.3310 X/3942 The results given on the Charts were all taken on Goshawk 1. engine with Goshawk 1. Cams. The average Goshawk 11… | ||
| Scan192 | Rusted and cracked swan neck of a silencer on a 20HP car and a recommendation for rust protection. | ||
| View original record | X4238 To BY. from Hm. C. to Wor. C. to Hs. Hm11/W20.8.23. Sales Dept. have sent a 20HP. car to N. which has done approximately 20,000 miles. I noticed that the swan neck of the silencer was rusted and… | ||
| Scan193 | Standardisation of lagging the exhaust pipe with asbestos to reduce heat. | ||
| View original record | R.R. 755 (10H) (SL 72 18-7-23) MP 274954s. X4238. COMPLETED 31.8.23 STANDARDISATION of CHASSIS PARTS. Date 16.8.23. Description of Parts. Exhaust Pipe lagged with asbestos. Origin To reduce heat under… | ||
| Scan194 | The expansion of Goshawk 11 exhaust valves to determine the required tappet clearance. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X4238 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 4226 4238 REF. Hsl/LG1.9.23. OBJECT OF TEST. To find the expansion of… | ||
| Scan195 | Valve and cylinder block expansion. | ||
| View original record | R.R. 403A (40 H) (RL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4226 REF: Hs1/LG1.9.23. Umbrella shaped Valve 45° - expands .010". After running, this valve shows a very cool head, but a… | ||
| Scan196 | Recommendation to continue using a valve design modified to 45° angle seats, with a note on sending samples. | ||
| View original record | contd:- -3- Hs1/LG1.9.23. Our recommendation is that we continue to use the present design of Valve modified to 45° angle seats. Scheme of proposed modification attached. We are sending a sample of… | ||
| Scan197 | To Mr. Hives requesting a report. | ||
| View original record | Mr Hives Could we have a report, please? [Illegible Signature] | ||
| Scan198 | Request for a report on the 20 HP chassis exhaust pipe with a new asbestos and aluminium sheath. | ||
| View original record | X4238 U. Hs. EP. BY. SFT3/EMM.24.10.23. We should be pleased to receive your report on the 20 h.p. chassis Exhaust Pipe with the new asbestos and aluminium sheath mentioned in our… | ||
| Scan199 | Proposal to test soft aluminium washers as a replacement for failing copper and asbestos washers on the 20HP model. | ||
| View original record | T.M.W HS. E.P. X4238 B/EP BY14-P26.10.23. FAILURE OF EXHAUST & INLET PIPE COPPER AND ASBESTOS WASHERS. In connection with EPL/H231023, we would like to suggest the use of soft aluminium washers… | ||
| Scan200 | Request for a report on the 20 HP Chassis Exhaust Pipe with a new asbestos and aluminium sheath. | ||
| View original record | X4238 Rg R Hs. E.P. U. SFT9/EMM.7.11.23. We should be pleased to receive your report on the 20 h.p. Chassis Exhaust Pipe with the new asbestos and aluminium sheath mentioned in our memos.… | ||
| Scan201 | Distorted exhaust pipe flange on a 20 HP chassis, proposing a larger washer for better seating. | ||
| View original record | c. to Hs. X4238 BY/SS8/DB.15.11.23. RE 20 HP CHASSIS - EXHAUST PIPE - SEC:5230. X.4238. With reference to the recent distorted flange on the Exhaust Pipe, caused through tightening up the union nut… | ||
| Scan202 | Standardisation of a reduced diameter swan neck exhaust pipe to reduce noise. | ||
| View original record | R.R. 755 (10M) (SL 72 18-7-23) MP 274954s. X4238 COMPLETED 10.1.24. STANDARDISATION of CHASSIS PARTS. Date 21.12.23 Description of Parts. REDUCED DIAMETER SWAN NECK EXHAUST PIPE. Origin (AS) To reduce… | ||
| Scan203 | Confirming the results from comparative road and bench tests on pipes for 20 HP cars. | ||
| View original record | CJ. from Hs. X4238 Hs5/LG22.1.24. STD. SHEET - X.4238. With reference to the attached. Comparative HP. curves were taken on the test bench - also comparative tests were made on the road. We have now… | ||
| Scan204 | Chasing a test report for a 20 HP chassis exhaust pipe with a new asbestos and aluminium sheath. | ||
| View original record | X4238 HS. EP. BY. SFT14/EMM.18.2.24. With reference to memo. SFT/AEM/EMM.27.9.23., concerning one 20 h.p.chassis Exhaust Pipe with the new asbestos and aluminium sheath which was handed to Hs., with a… | ||
| Scan205 | Standardisation report for an exhaust pipe stay designed to prevent vibration. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. Description of Parts. STAY FOR EXHAUST PIPE. Origin. To prevent pipe vibrating. Experimental Test Report. At low engine speeds with the engine running light, we… | ||
| Scan206 | Standardisation document for a stay to prevent exhaust pipe vibration. | ||
| View original record | RR 75S (10M) (SL391 2-11-23) MP 281297 STANDARDISATION of CHASSIS PARTS. COMPLETED 22.5.24. Date 15.4.24. X No. 4238 Description of Parts: STAY FOR EXHAUST PIPE. HS Origin: To prevent pipe vibrating.… | ||
| Scan207 | Testing aluminium washers for induction and exhaust pipes on a 20 HP chassis. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. 44238 EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR. (By) E. Da (EP) PN. OY. Expl. No. 44227 (crossed out) 44238 REF. Hs/TMW1/LG30.5.24. OBJECT OF TEST. To… | ||
| Scan208 | Report comparing horsepower figures for the Goshawk exhaust system under different configurations. | ||
| View original record | X4238 REPORT ON GOSHAWK EXHAUST SYSTEM. Comparative figures showing difference in H.P's - (a) having standard exhaust system - and (b) Front exhaust box on same lines as 40/50 HP. Also showing HP.… | ||
| Scan209 | Horsepower (HP) comparison tables at various RPMs for two different exhaust configurations. | ||
| View original record | -2- COMPLETE CURVE WITH ALL ON :- R.P.M. | HP. A. | B. 500 | 10.8 | 10.8 750 | 16.3 | 17 1000 | 21.9 | 22.7 1250 | 27.8 | 28.2 1500 | 31.8 | 32.6 1750 | 37.3 | 38.2 2000 | 42.4 | 43.4 2250 | 46.5 |… | ||
| Scan210 | Extract regarding the overheating of the 20-HP Swan Neck Exhaust Pipe and a recommendation for lagging it. | ||
| View original record | X4238 BY c. Hs. c. Wpr. EP/Thn7/H24 6.24. re. 20-HP. Swan Nexk Exhaust Pipe. We give below an extract of a memo we have received from Mr. Evans in London, which we certainly recommend for your… | ||
| Scan211 | Special silencer pipe fixing to cure exhaust pipe vibrations on a 20-HP chassis. | ||
| View original record | Hs. C BY Wor. RG R X4238 2-30 2.30 EP5/H25.6.24. re. 20-HP. Exhaust Pipe Vibrations. I am very pleased to be able to report that a special Silencer Pipe fixing which has been fixed by Mr Warwick on a… | ||
| Scan212 | 20 HP engine exhaust tests, comparing standard and modified systems. | ||
| View original record | R.R. 403a (20H) (D.A. 652 20-2-24) J.H.B. Y4238 EXPERIMENTAL REPORT. Expl. No. 4238/488 REF: HS2/LG1.7.24. To R. from Hs. c. to CJ. RG. c. to E. DA. c. to EY. WOR. 20 HP. EXHAUST TESTS. We have… | ||
| Scan213 | Horsepower test results for standard and experimental 20 HP exhaust configurations. | ||
| View original record | HP. EXHAUST. HORSE POWER. | R.P.M. | Free exhaust. | Exhaust manifold including hot-spot. | Exhaust pipe from manifold to silencer added. | Silencer added. | Swan neck exhaust pipe added. |… | ||
| Scan214 | Road and hill climb test results for vehicle 4-G-11 on Shardlow straight and Pistern. | ||
| View original record | -3- ROAD TESTS ON 4-G-11. High speed tests on Shardlow straight. 'A' STANDARD. Start M.P.H. | Finish M.P.H. | Time. secs. Out | 40 | 58 | 30 4/5 In | 40 | 58.5 | 30 3/5 Mean | 40 | 58.25 | 30.35 'B'… | ||
| Scan215 | 20 HP exhaust and induction tests to improve engine performance and fuel economy. | ||
| View original record | To HS. from R. c. to CJ. X4238 R1/MA.7.24. 20 HP. EXHAUST AND INDUCTION TESTS. X.4238 X.4227 With regard to the above tests I should like to know if the freer exhaust, such as you have with the 3 pipe… | ||
| Scan216 | Proposed exhaust and induction system tests for a 20 HP engine. | ||
| View original record | To HS. from R. c. to CJ. 4238 RL/M4.7.24. 20 HP. EXHAUST AND INDUCTION TESTS. X.4238 X.4227 With regard to the above tests I should like to know if the freer exhaust, such as you have with the 3 pipe… | ||
| Scan217 | Extract from a visit to sales regarding a resonant exhaust note on the 20 HP model. | ||
| View original record | X.4238. Extract from DA/EV4/M14.7.24. RE. VISIT TO SALES ON THE 10TH. INST. (6) 20 HP. EXHAUST NOTE X.4238. When running at 19 m.p.h. on top gear the exhaust system appears to be-come resonant over a… | ||
| Scan218 | Recommended fix using a special sliding exhaust joint for vibration on 20-HP cars. | ||
| View original record | x4238 Hs. c. BY. c. Wor. EP11/H21.7.24. re. 20-HP. Exhaust Vibration. This is a fault about which we have complained on several occasions and still exists on our 20-HP cars. We were agreeably… | ||
| Scan219 | And comparing two schemes (563 and 564) for the 20 HP chassis exhaust system. | ||
| View original record | N4238 Hs. BY2/H. 9.9.24. 20 HP. CHASSIS EXHAUST SYSTEM. We have supplied you with two schemes, respectively numbered 563 and 564, by which the front end of the silencer is clamped up rigidly to the… | ||
| Scan220 | Necessity of lagging the 20 HP swan neck exhaust pipe. | ||
| View original record | 4238 To BY. from Hs. c. to EP. c. to DA/EV. c. to Wor. Hs/TMW/LG16.9.24. EP/Thn7/H24.6.24. LAGGING OF 20 HP. SWAN NECK EXHAUST PIPE. We cannot say that our experience with the Experimental 20 HP. cars… | ||
| Scan221 | Steering stiffness and exhaust boom issues during GMK-65 trials. | ||
| View original record | W/S PN4 c. to BJ. Hs. CWB. 4238 EP4/H22.9.24. RE. GMK-65 - TRIALS. X.4238 X.4264 X.4545 With reference to your PN3/DN18.9.24. - there should not be the necessity for 'putting together' the two steel… | ||
| Scan222 | Investigation of a persistent 'booming' noise in a 20 HP car and requesting an experimental exhaust system for testing. | ||
| View original record | X4238 S/W (Hs) - copy to EP. CWB28/LH26.9.24. I am now investigating a case of a 20 H.P.car - G.F.37, The Dowager Lady Cain, which is a bad 'Boomer'. The booming is not of the normal type, in that the… | ||
| Scan223 | Reducing exhaust noise and vibrations for the 20 HP model. | ||
| View original record | R.R. 493 (40 H) (SL 45 12-7-23). J.H. D. X4238 EXPERIMENTAL REPORT. COPIES TO: (RCJ) (BJ) WOR By (E Da) (EP) PN-OK (RS) Expl. No. 4238 REF. Hs1/LG26. 9.24. OBJECT OF TEST. To reduce exhaust noise and… | ||
| Scan224 | Modified exhaust fittings for the 20 HP model, detailing schemes 563 and 564 to address vibration issues. | ||
| View original record | B.R. 496a (30M) (D.A. 662 20-3-24) J.B.D. -1- Exptl. No. REF HS/TMW/LG26.9.24. EXPERIMENTAL REPORT. 20 HP. MODIFIED EXHAUST FITTINGS. SCHEMES 563 & 564. Complaints were received some time ago of a low… | ||
| Scan225 | Reducing exhaust boom, recommending Scheme 564 for future production over Scheme 563. | ||
| View original record | B.B. 405A (ROH) (D.A. 652 20-2-24) J.B.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/TMW/LG26.9.24. reduction of the exhaust boom noticeable around 35 to 30 m.p.h., a cure however is not claimed for… | ||
| Scan226 | Despatch of Exhaust Fittings (scheme 563) to Cricklewood. | ||
| View original record | 4238 To BP. from Hs/TMW. c. to Mr. Chatwin - Stores. Hs/TMW3/LG27.9.24. We are sending into the Stores :- Exhaust Fittings to scheme 563 - to be despatched to Cricklewood per passenger train.… | ||
| Scan227 | Confirming the despatch of an experimental 20 HP exhaust system and fitting blueprint to Cricklewood. | ||
| View original record | W/S. To CWB. from Hs. X4238 Hs/TMW2/LG27.9.24. 20 HP. EXHAUST FITTINGS. Answering your CWB28/LH26.9.24. We have today despatched to Cricklewood per passenger train an experimental Exhaust System and… | ||
| Scan228 | Dispatch of a 20 HP exhaust system and fittings for experimental fitting. | ||
| View original record | W/N. X4238 To Cricklewood, from Hs/TMW. Hs/TMW1/LG27.9.24. 20 HP. EXHAUST SYSTEM. We have to day despatched per passenger train to you, a Silencer and Exhaust Fittings to scheme 563, blue print of… | ||
| Scan229 | Confirming receipt of Silencer and Exhaust fittings for a test on The Dowager Lady Cain's 20 HP car, G.F.37. | ||
| View original record | X4238 S/W (Hs) from CWB. CWB10/LH29.9.24. Thank you for your memo - Hs/TMW1/LG/27.9.24. - and the prompt despatch of Silencer and Exhaust fittings to Scheme 563 for test on The Dowager Lady Cain's 20… | ||
| Scan230 | New and irritating exhaust noises on the 40/50 HP model. | ||
| View original record | 44238 To H. from B.J. ER Copy to.... Hs. BJ1/H1.10.24. NEW EXHAUST NOISES: 40/50 H.P. I attach a copy of PN15/DN30.9.24. We are hoping that this matter can receive immediate attention in order to… | ||
| Scan231 | New 'tinny' exhaust noise on the 40/50 HP model due to a system modification. | ||
| View original record | COPY. To BJ. from PN. PN15/DN30.9.24. NEW EXHAUST NOISES: 40/50 H.P. Arising out of the provision of our new system of brakes, there has had to be a modification in the exhaust fittings. Whereas in… | ||
| Scan232 | Requesting a meeting to discuss and approve standardisation alterations for the 'U' Series, specifically concerning new exhaust noises. | ||
| View original record | H4238 To Hs. from BJ. BJ-4/D20.10.24. New Exhaust Noises. With reference to EP7/H.16.10.24, please bring with you to-morrow to show to us, a copy of the Standardisation Sheet passed by us in regard to… | ||
| Scan233 | Revised design for a 20 HP exhaust downtage support and sliding spherical joint, incorporating suggestions from Mr. Royce. | ||
| View original record | X.4238 To BY. from E. c. to HS. E2/M20.12.24. Re. 20 HP. EXHAUST DOWNTAGE SUPPORT, AND SLIDING SPHERICAL JOINT. X.4238 We send you herewith LeC.1937., shewing the revised design for the above,… | ||
| Scan234 | Suitability of an exhaust pipe on a 20 HP Goshawk-11. | ||
| View original record | To E. from R. c. to CJ. HS. X.4238 R3/M13.1.25. 20 HP. EXHAUST PIPE. X.4238. The present pipe on 5-Goshawk-11 does not seem to require any alteration. In its present simple form it seems quite… | ||
| Scan235 | Drawing No. LeC. 2040, which shows a proposed method for anchoring the 20 HP silencer to reduce vibration. | ||
| View original record | X.4238 To BY. from E. E2/M3.4.25. c. to CJ. HS. RE. 20 HP. SILENCER. X.4238 We send you herewith drawing No. LeC. 2040 shewing proposed method of anchoring the 20 HP. silencer, to damp out the… | ||
| Scan236 | Potential cancellation of instructions for fitting asbestos cord lagging on the 20 HP chassis exhaust. | ||
| View original record | X4238 HS. BY/SS. BY6/H. 28.5.25. 20 HP. ASBESTOS CORD LAGGING FOR DOWNTAKE & EXHAUST. Standardization Sheet No.X.4238 was issued for fitting asbestos cord lagging on the exhaust down take pipe of the… | ||