Rolls-Royce Archives
| Identifier | Entry | ||
| 04-page001 | Instructions regarding the carburetter, induction pipe, and petrol feed for the Goshawk chassis. | ||
| View original record | R.R.BD.122A.1,000.7-18.C.&S.G.Ltd.5002 X.3582 XW228 E2/G10.2.20. To Da. from E. Copy to CJ. * Bn. * Hs. * CK. X.3582. RE GOSHAWK CHASSIS. X.3581. CARBURTETTER AND PETROL FEED. In accordance with Mr.… | ||
| 04-page002 | Dispatching two blueprints for 'A' Scheme 574, showing an initial arrangement of the 'Goshawk' carburetter and induction pipes. | ||
| View original record | [Top Right]: 1 R.R. OBS. (D.S.T.) C.R.H. 150. 11-19-50 C. 1918. [Handwritten and crossed out]: X.3582 [Stamp]: RECEIVED OCT 26 1920 To HY from DA. Copy to TS (1 print). Copy to HS (1 print). Copy to… | ||
| 04-page003 | Scheme for temporary Goshawk carburettor controls. | ||
| View original record | To SX from DA. Copy to TB (1 print). Copy to HS (1 print). Copy to RWD(1 print). Copy to FV. X.3582 D43/CB1-1 2-120 Re Goshawk Carburetter Controls etc., The scheme of the temporary controls suitable… | ||
| 04-page004 | Modifications to the carburetter throats of a Goshawk engine. | ||
| View original record | To-WT from DA/STT. Copy to NS (1 print). Copy to IB (1 print). Copy to WHT(1 print). Copy to EFC. X.3582 DA/STT1/CB7-12-20. Goshawk Engine - Carburetter Throats. We send herewith two blue prints of… | ||
| 04-page005 | Experiments to determine the correct proportions for Goshawk engine carburettor throats. | ||
| View original record | X 3582 To - De/Stt, from Ha/TMW. c. to RH. c. to HED. c. to EWE. Ha/TMW2/LGC.18.20. X 3582 GOSHAWK ENGINE - CARBURETTOR THROATS. De/Stt1/CBT.12.20. Referring to your note ref: above, please note, that… | ||
| 04-page006 | Preliminary report on the road behaviour of the 'Goshawk' chassis. | ||
| View original record | X3583 To R. from He/TMW. c. to Cd. c. to Col. c. to En. c. to E. c. to Dn. c. to Wor. He/TMW1/LGB.1.21. X.3481. RE "GOSHAWK" CHASSIS. We have now run the "Goshawk" on the road sufficiently long to be… | ||
| 04-page007 | Title page for the Goshawk II. | ||
| View original record | Goshawk II | ||
| 04-page008 | Use of a scaled-down carburetter for a new small chassis to save time. | ||
| View original record | R.R. 128m 100 T/b. H.H. ex 21/10/20 G 2729 X4228 To CJ. from R. Extract from R4/G17.11.20. X.4218. RE SMALL R.R. CHASSIS. X.4228. We shall use present 40/50 R.R. H.P. carburetter reduced in scale to… | ||
| 04-page009 | Extract detailing design updates for the HE Goshawk II engine, including cylinder heads, ignition, and induction systems. | ||
| View original record | R.R. 288A (old T & S. R. 25A) 1M-11-20 C. 2029 X4228 To Ds. from H. ----------------- Extract from R3/G18.1.31. ------------------------- X.3481. HE GOSHAWK II (3) We expect to send you the drawing of… | ||
| 04-page010 | Extract from a visit report regarding carburetter designs for the Goshawk 11 and an experimental setup for the 40/50 HP chassis. | ||
| View original record | R.R. Labs (100) C. H. Tbk. 10m-12-20 S. 6548 X4228 31.3.21. VISIT AND MESSRS. WORMALD AND HIVES TO WEST WATERING ON SATURDAY MARCH 19TH. 21. Extract from E6/G31.3.21 X.4228. -------- GOSHAWK 11… | ||
| 04-page011 | The Goshawk II carburetter, its drawing, and a proposed hot air supply system using radiator shutters. | ||
| View original record | X.4228 To Wa. from E. &: to CJ. &: to Wor. c. to Hg. & EFC. c. to HY. R2/G13.5.21. X.4228 - Re. GOSHAWK II CARBURETTER. We send you herewith drawing No.LeC.1386 shewing the above. This drawing shews… | ||
| 04-page012 | Gasket options for the 'Goshawk II' carburettor to cylinder block joint. | ||
| View original record | To BA. from E. Copy to HX. " " E.O. X4228 RECEIVED 24 MAY 1921 E2/G23/5/21. RE "GOSHAWK II" CARBURETTOR : LBC.1386. Referring to the joint between the carburettor flange and the cylinder block, it… | ||
| 04-page013 | Hill climb test of an exhaust heated throttle shutter on a 40/50 chassis. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. X4228 To: C.H. Hives Order No.: Customer's No.: GGS II Exhaust heated throttle shutter controlled by accelerator pedal. 40/50 Chassis, Shell 810% paraffin.… | ||
| 04-page014 | Carburetter modifications for the Goshawk 11 engine, including the float chamber, throats, and air valve. | ||
| View original record | To Hs. From R. c. to CJ. c. to Mor. c. to Ds. c. to EY. [Stamp]: COPY [Handwritten]: WHARF [Handwritten]: Exhaust K.4219. GOSHAWK 11. [Handwritten]: X.4228 R10/C14.9.21. I was pleased to hear that the… | ||
| 04-page015 | Technical memorandum discussing modifications to the carburetter, a Goshawk switch, the starting handle, and other fittings. | ||
| View original record | contd. -2- R10/G14.9.21. getting the carburetter to work accurately. I have also suggested that the upper fitting part of the piston is lengthened and the use of an air tight groove in such a way that… | ||
| 04-page016 | Modifications to the rear tank, dynamo, auto-vac, springs, and exhaust system. | ||
| View original record | contd:- -3- X.4481 X.4318 fixings. Instructions for shortening the rear tank at least ½" so as to clear more securely the rear spring has been attended to by Mr. Evernden. The distributing board has… | ||
| 04-page017 | Technical note discussing the fan blades, radiator shutters, and undershield. | ||
| View original record | contd. -4- R10/G14.9.21. The fan behind the radiator looks as though it should be made with longer blades. The liberal space allowed was for shutters between the fan and the radiator, but we are not… | ||
| 04-page018 | Drawing LeC.1448 for the Goshawk 11 carburetter, specifically the larger float chamber and a revised petrol strainer cover. | ||
| View original record | To Da. from E. c. to CJ. c. to WOr. c. to Hs. c. to BY. X4228 E6/G16.9.21. X.4228 - RE GOSHAWK 11. CARBURETTER. We send herewith drawing No.LeC.1448 giving particulars of the larger floatchamber which… | ||
| 04-page019 | Revisions to the Goshawk II carburetter, specifically modifications to the jets to prevent flooding on gradients. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to Hs. c. to EY. X4228 E1/G26.9.E1. RE GOSHAWK II CARBURETTER. X.4228. We send you herewith drawing No.Lec.1455 shewing revision of the Goshawk II. carburetter… | ||
| 04-page020 | Telegram from Elliott to Roycar Derby regarding slow running and low speed jets for starting. | ||
| View original record | POST OFFICE TELEGRAPHS C. OR B. Recd in 11-14 By HB Prefix: Q Handed in at: 11/4 Office of Origin and Service Instructions: Chichester T No. of Telegram: 20 Sent: 1.26 M To: 1320 By: AR Office Stamp:… | ||
| 04-page021 | The Goshawk 11 carburetter, addressing slow running issues and comparing different jet and throttle types. | ||
| View original record | X4228 E. from Hs. Hs5/LGS.05.10.21. GOSHAWK 11, CARBURETTER. X4228 With reference to your telegram asking whether the slow running with the Goshawk 11. carburetter is sufficiently good on the ordinary… | ||
| 04-page022 | Confirmation of a telegram regarding engine noise reduction and scheduling of comparisons. | ||
| View original record | y4228 7th. Oct. 1921. CON FIRMATION 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… | ||
| 04-page023 | Extract regarding the design of a pilot jet and a silencer for the Goshawk carburetter. | ||
| View original record | X4228 Extract from E2/G8.10.21 X.4219. 8.10.21. X.4228 (struck through) X4387 We are proceeding to design a pilot jet for the Goshawk carburetter fitted with an automatic valve somewhat on the… | ||
| 04-page024 | Telegram regarding a modified scheme for the Goshawk two carburetter setup. | ||
| View original record | CONFIRMATION POST OFFICE TELEGRAPHS X 6228 No. of Telegram 54 Office Stamp: DERBY 12 JU 31 Prefix Handed in at: 216/ Chichester T 15 Words: 15 Received here at: 2-36 Roycar Derby Hives re Goshawk two… | ||
| 04-page025 | Alterations to the Goshawk 11 carburetter for silencing and control. | ||
| View original record | X4228 10.12.21 FROM R. c. to CJ. c. to Wor. c. to BY. c. to Da. RE/G11.10.21. X.4228 - GOSHAWK 11. CARBURETTER. We are altering the form of the carburetter casting and the upper part of the mixing… | ||
| 04-page026 | To halt production of current carburetter castings and propose designing a simpler, new version. | ||
| View original record | contd. -2- R5/G11.10.21. no doubt of it acting satisfactorily, and therefore ready for immediate production. In the meantime, hold up the production of the present castings pending this alteration, as… | ||
| 04-page027 | Modifications to the Goshawk II carburettor. | ||
| View original record | X.4228. To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. E1/G14.10.21. GOSHAWK II - CARBURETTER. X.4228. In accordance with Mr. Royce's instructions, we send you herewith an advance blue print… | ||
| 04-page028 | Modifications to the Goshawk 11 carburetter to address a noisy intake and float chamber issues. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to Da. c. to HY. X4228 RB/G17.10.31. GOSHAWK 11 - CARBURETTER. X.4228. With regard to the reported noisy intake of Goshawk 11, we felt sure that this would be… | ||
| 04-page029 | Letter discussing carburetter jet adjustments, slow running, and the redesign of a butterfly throttle control. | ||
| View original record | CONTD -2- to use this small jet, except for starting, so that it can be han adjusted strong enough to always give a satisfactory start. We are pleased to hear that you could get quite satisfactory… | ||
| 04-page030 | Blueprint for the Goshawk 11 carburetter, detailing modifications, a silencer trial, and design features. | ||
| View original record | X4228 To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. E6/G19.10.21. GOSHAWK 11. CARBURETTER. X.4228. We send you herewith a blue print of Lsd.1467 shewing the Goshawk 11. Carburetter fitted… | ||
| 04-page031 | New silencer design and modified control gear for the Goshawk II engine, referencing drawings LeC.1467 and LeC.1474. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. X4228 E4/G29.10.21. RE GOSHAWK II. SILENCER FOR CARBURETTER AND MODIFIED CONTROL GEAR. X.4237 X.4228 X.4239 We send you herewith the original of… | ||
| 04-page032 | Requesting instructions on the specifications for five Goshawk II carburetters for a Works' chassis. | ||
| View original record | To Hs. from BY/Bhn. X4228 BY/Bhnl/DB.4.11.21. RE 'GOSHAWK II' - CARBURETTER. D.O.P. E.50675. 5 CARBURETTERS FOR WORKS' CHASSIS With reference to the five carburetters for the Works' chassis, will you… | ||
| 04-page033 | Replacement of problematic cracking and leaking fibre washers with continental micarta on various components. | ||
| View original record | X4228 BY. From Hs. c. to GJ. Hs3/LG29.12.21. FIBRE WASHERS. X4225 X4228 We wish to get rid of fibre washers wherever possible. Will you please instruct some washers for the 40/50 and Goshawk steering… | ||
| 04-page034 | Criticisms of the Goshawk carburetter with silencer, particularly its noise level, and proposing modifications. | ||
| View original record | X4228 Extract from RT/AGO.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… | ||
| 04-page035 | Accompanying a blueprint for a 'Goshawk II' carburetter, detailing a raised petrol level. | ||
| View original record | To Mr. [redacted]. From BY/Bhn. c. to Hs. Y4228 BY/Bhn3/DB.3.3.22. X.4228 - "GOSHAWK II" - CARBURRETTER. Please receive herewith one blueprint of E.51611 - Sketch showing Petrol Level raised .375. The… | ||
| 04-page036 | Blueprint for the Goshawk II engine showing a modification to raise the petrol level. | ||
| View original record | E.51611. E51607 NORMAL LEVEL ALTERNATIVE NEEDLE E51609 E51608. ROLLS-ROYCE LTD. PRINT ROOM 2 - MAR 1932 DERBY E.51611. GOSHAWK II PETROL LEVEL RAISED '375. | ||
| 04-page037 | Extract discussing a carburetter modification to increase damping on the air valve. | ||
| View original record | X.4228. Extract from E1/7.3.22 (3) CARBURETTER. X.4228. To get more damping on the air valve the piston could be extended upwards above the suction annulus with many rings turned in it. This appears… | ||
| 04-page038 | Requesting a recommendation for a Goshawk II carburetter spring and a list of production modifications. | ||
| View original record | Y4228 To Hs. from BY/Shn. Cottesmore. BY/Shnl/DB.7.3.22. RE "GOSHAWK II" - CARBURETTER. Will you please let us know which Suction Chamber Spring E.51320-1-2 you recommend for production. Will Mr… | ||
| 04-page039 | The Goshawk II carburetter float weight and petrol level. | ||
| View original record | To Hs. from BY/Shn. X4228 BY/Shn/DB.7.3.22. RE "GOSHAWK II" - CARBURETTER. With further reference to the instructions issued for raising the petrol level .375, as shown on drawing E.51614, could you… | ||
| 04-page040 | Suggestion to test the Goshawk 11 carburetter on the exhaust side of the engine to improve pulling at low speeds. | ||
| View original record | X.4228. To Rs. from E. c. to CJ. c. to Wor. ES/10 17.3.22. GOSHAWK 11. CARBURETTER. X.4228. With regard to the suggestion you have made to test Goshawk 11. carburetter on the exhaust side of the… | ||
| 04-page041 | Carburetter throat sizes and air valve specifications for the Goshawk 11. | ||
| View original record | To O.J. for R. from E. c. to C.J. c. to Wor. c. to Hs. c. to BY. Handwritten: X4228 E2/113.4.32. RE. GOSHAWK 11. CARBURETTER. X.4228. x12768 The high speed throat on the 40/50 carburetter is 50%… | ||
| 04-page042 | Carburetter quantities, air valves, and springs, comparing a 40/50 model to a Goshawk-11 for a 55 HP engine. | ||
| View original record | contd:- -2- wrong with the proportions of those given on the detail drawings for the original air valve: they should be, and are, as near as possible all reduced to .84 of the 40/50 to agree with the… | ||
| 04-page043 | Issues with petrol filters on a G-Goshawk-11 carburetter due to a blockage by fine silt. | ||
| View original record | Y4228 Grand Hotel de l'Ouest, Laval. 19.4.22 (Wednesday) EP. from Hs. PETROL FILTERS. X4228 X4086 X4266 When running from Le Canadel here, the filters on G-Goshawk-11 carburetter got made up on two… | ||
| 04-page044 | Adapting a 40/50 carburetter for the Goshawk 11 engine, based on calculations and Mr. Royce's instructions. | ||
| View original record | To EP. from E. c. to CJ. X4228 E3/M20.4.22. GOSHAWK 11. CARBURETTER. X.4228. X276F We send you herewith a copy of a memo. E2/M13.4.22.) dealing with the Goshawk 11. carburetter, also a blue print of… | ||
| 04-page045 | Drawing for a larger air valve for the Goshawk 11 carburetter. | ||
| View original record | To Da. from E. c. to CJ. c. to Wor. c. to BY. c. to Hs. X4228 El/M25.4.22. GOSHAWK 11. CARBURETTER. X.4228. We send you herewith drawing No.Lec.1557 shewing a larger air valve for the Goshawk 11.… | ||
| 04-page046 | Vacuum figures and air valve diameter for the Goshawk 11 carburetter. | ||
| View original record | X.4228. To R. from E. c. to CJ. c. to Hs. c. to BY. E2/M25.4.22. GOSHAWK 11. CARBURETTER. X.4228. With reference to report E2/M13.4.22. Would you kindly note that the figures for the Vacuum in the air… | ||
| 04-page047 | The Goshawk 11 starting carburetter and mixture control, detailing modifications to avoid fouling the Klaxon horn. | ||
| View original record | X 4228 To EY. from Da. c. to CJ. c. to Wor. c. to Hs. Da8/M10.5.22. GOSHAWK 11. STARTING CARBURETTER & MIXTURE CONTROL ON INSTRUMENT BOARD. X.4067. X.4239. X.4228 We send herewith N.sch.1272 shewing… | ||
| 04-page048 | Design changes to the Goshawk 11 carburetter controls. | ||
| View original record | To Da. from E. c. to CJ. c. to WCr. c. to Ey. c. to Hs. c. to EP. X422P E2/LE22.5.22. GOSHAWK 11. CARBURETTER CONTROLS. X.4228. X.4239. We send you herewith drawing No.Lec.1583 showing the hand… | ||
| 04-page049 | Experimental modifications to the Goshawk 11 carburetter air valve. | ||
| View original record | X.4228. To Hs. from R. c. to CJ. c. to Wor. c. to Ey. c. to EP. c. to Hy. R1/M23.5.22. GOSHAWK 11. CARBURETTER X.4228. AIR VALVE. (1) The larger size should be made experimentally and tested to see if… | ||
| 04-page050 | Modifications for the Goshawk carburetter, including petrol level and needle adjustments. | ||
| View original record | X.4228. To Da. from E. c. to CJ. Wor. c. to SY. Hs. Sp. EL/M20.6.30. GOSHAWK CARBURETTER MODIFICATIONS X.4228. We send you herewith drawing No.Lec.1598 showing the carburetter modifications mentioned… | ||
| 04-page051 | Continued document discussing a standard modification for a 2.BA box spanner. | ||
| View original record | contd:- -2- spanner requires a slight modification to ensure that it will always be the right diameter over the outside. This modification should be standardised for the 2.BA box spanner where-ever… | ||
| 04-page052 | Advantages of the adjusting needle for the pilot jet on the Goshawk carburetter. | ||
| View original record | To E. From Hs. c.c. to CJ. c.c. to De. c.c. to BY. c.c. to EF. X4228 Hs3/LG29.6.22. GOSHAWK - CARBURETTER. X4228 Referring to your memo. El/MED.6.22. We have found that there is a definite advantage… | ||
| 04-page053 | The Goshawk engine's performance issues and proposals for future design tests. | ||
| View original record | To Hs. from R. XG228 R6/23.6.22. RE GOSHAWK. X.4228. X.4240. I have the impression that the Goshawk engine is susceptible to bad petrol and cold weather, better than most engines but not quite so good… | ||
| 04-page054 | The re-arrangement of the Goshawk throttle control to address complaints of poor delicate control. | ||
| View original record | X.4228 To Hs. From R. c. to CJ. c. to EY. c. to EP. c. to HY. c. to HY. RA/M&S. 6. 22. GOSHAWK - THROTTLE CONTROL X.4239. X.4228. We are re-arranging the control by putting the spring which closes the… | ||
| 04-page055 | Alteration to the pilot jet adjusting needle on a Goshawk carburetter, following a report by Mr. Hives. | ||
| View original record | To BY. from E. c. to CJ. c. to Wor. c. to Hs. X.4228. E2/M29.6.22. GOSHAWK CARBURETTER. X.4228. Referring to Mr. Hives report Hs3/LG22.6.22., in which he asks for us to retain the adjusting needle for… | ||
| 04-page056 | The adoption of a glass window in the Goshawk carburetter's float chamber. | ||
| View original record | E. from Hs. X4228 Hs5/LG3.7.22. GOSHAWK - CARBURETTER. X4228 X1692 Is it intended that the glass window in the float chamber should be adopted as standard on all carburetters? We cannot see any… | ||
| 04-page057 | The difficulty in achieving sensitive control for the Goshawk throttle and a proposed modification. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. V4228 Hel/LCS.7.22. GOSHAWK - THROTTLE CONTROL. V4228 V4239 The chief difficulty in getting a nice sensitive and gradual control for the Goshawk… | ||
| 04-page058 | Adoption of a glass window for the Goshawk Carburetter float chamber as standard. | ||
| View original record | To Hs. from E. c. to CJ. Wor. c. to HY. BP. X4228 E1/147.7.22. GOSHAWK CARBURETTER. X.4228. In reply to your memo. He5/LG3.7.22., it is intended that the glass window in the float chamber should be… | ||
| 04-page059 | Mr. Royce's requests for Goshawk carburetter parts and information. | ||
| View original record | To Hs. from E. X4228 E2/129.7.22. GOSHAWK CARBURETTER X.4228. Kindly note Mr. Royce is anxious to receive the cone restrictors for the carburetter jets for Goshawk. He is also waiting to know the… | ||
| 04-page060 | Instructions detailing throttle gap measurements for the Goshawk II engine. | ||
| View original record | X4228 R.R. 29 20M Bks.) C&E Ltd. 13-2-35. M.P. 10023 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To C/S Jones Order No. Customer's No. Re Goshawk II Throttle With control lever as near the perpendicular as… | ||
| 04-page061 | Modifying the Goshawk II throttle control for smoother operation on a limousine. | ||
| View original record | V4228 To R. from Hs. c. to C.J. c. to R. c. to Da. c. to BY. He4/LMD.9.7.32. GOSHAWK II, THROTTLE CONTROL. We tried on the limousine car arranging the controls to the latest Lec. drawing. We found… | ||
| 04-page062 | Continuation of a report on throttle lever and butterfly valve adjustments and testing results. | ||
| View original record | Contd:- -2- With levers arranged as shown on the latest LoC, an .020" feeler can be inserted in the gap of the throttle for .250" movement on accelerator pedal. With the angle of the butterfly valve… | ||
| 04-page063 | The dispatch of blueprints for 'Goshawk II' carburetter parts for an experimental set. | ||
| View original record | To Hs. from BY/Shn. X4228 BY/Shnll/DB.20.7.22. X.4228 - "GOSHAWK II" - CARBURETTER. Please receive herewith one blueprints of each of the following:- E.51940 - Valve. E.51949 - Valve Rod. E.51941 -… | ||
| 04-page064 | Request for Goshawk carburetter cone jets, proposing to send a complete new carburetter instead. | ||
| View original record | E. from Hs. Y422D Hs4/LG24.7.22. GOSHAWK CARBURETTER - X.4228. Referring to your request for cone for the carburetter jets. We propose sending to you in about a weeks time, a complete new carburetter… | ||
| 04-page065 | Instructions from Mr. Royce regarding the installation of induction pipes, exhaust pipes, and carburetter for the Goshawk-1 engine. | ||
| View original record | X422P To BY+ from E. c. to CJ. c. to Wor. c. to Hs. E1/M25.7.22. GOSHAWK 1. INDUCTION PIPES, EXHAUST PIPES & CARBURETTER. X.4226. X.4227. We send you herewith drawings Nos. Lec.1613 and 1614 shewing… | ||
| 04-page066 | Carburetter alterations for Goshawk-11 patterns and a directive from Mr. Royce. | ||
| View original record | Contd: -2- standard Goshawk-11 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… | ||
| 04-page067 | Tests on Goshawk 11 induction pipes regarding fuel distribution and performance with inferior petrol. | ||
| View original record | To R. from Hs. c. to CJ. c. to L. c. to Du. c. to HY. X4228 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.… | ||
| 04-page068 | Carburettor tests with various fuels to diagnose hesitation and performance issues 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… | ||
| 04-page069 | Carburetter testing to diagnose engine hesitation and weakness related to the air valve and 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… | ||
| 04-page070 | Modifications to the Goshawk throttle and carburetter. | ||
| View original record | To Hs. from R. c. to CJ. BJ. c. to R.P. c. to HY. Hy. X4228 E2/H/27.7.32. GOSHAWK THROTTLE X.4238. X.4228. I am extremely pleased to hear that you have discovered that there is a distinct advantage in… | ||
| 04-page071 | Carburation schemes for Goshawk and Condor engines, including sketches. | ||
| View original record | XU228 To Hg. from R. c. to CJ. RE. CARBURATION X.4305. X.4228. R2/M28.7.22. X.354E With reference to carburation the suggestion on Lec.1350 has been supplanted by a scheme similar to that we have sent… | ||
| 04-page072 | Modification to Goshawk II carburettor floats to prevent production delays. | ||
| View original record | To Dft. from BY/Shn. and to Mr. SYKES. c. to Hd. c. to Dft. for Mr Cox. c. to Dft. for Mr Ellis. V4228 RE "GOSHAWK II" - CARBURETTER FLOATS - SEC:5080. In order not to delay production, it has been… | ||
| 04-page073 | Requesting confirmation on carburetter float specifications for the Goshawk II engine. | ||
| View original record | To Hs. from BY/Shn. c. to RTT. c. to JA/DB. c. to RHK. U.W. X4228 BY/Shnl/DB.19.8.22. RE "GOSHANK II" - CARBURETTER. Will you kindly confirm that the lighter float weighing 1.250 ounces is found most… | ||
| 04-page074 | Extract detailing carburetter and ignition issues on a Goshawk-II engine. | ||
| View original record | X.4228. Extract from RL/MSH.8.22. X.4219. X.4096. 6-Goshawk-II. X.4228 - CARBURETTER. 6-Goshawk-II engine owing to its present compression naturally runs better slowly, and seems very satisfactory but… | ||
| 04-page075 | Telegram received by telephone regarding the supply of carburettor parts and data. | ||
| View original record | ROLLS-ROYCE, LIMITED. TELEGRAM RECEIVED BY TELEPHONE. X4228 Y3408 Time Received: 10.45 By: W B Date: 29-9-22 To: Royce Derby from: Colchester 9.58 [Stamp: DERBY] Main message: Olives are must save D O… | ||
| 04-page076 | Telegram received by telephone with a handwritten instruction from Royce. | ||
| View original record | R.R. 541A (md). S.E.No. 5743. N.P. 10/22. ROLLS-ROYCE, LIMITED. TELEGRAM RECEIVED BY TELEPHONE. STAMP: RECEIVED 9 MAY 1924 DERBY Time Received Date To By From Handwritten Message: try one to each set… | ||
| 04-page077 | Letter from The 'TRIAT' Carburettor Company proposing their patented carburettor for a new car model. | ||
| View original record | X4228 The 'TRIAT' Carburettor Company. (WILLIAM JAMES, PROPRIETOR) MANUFACTURERS OF THE "TRIAT" (TRIPLE ATOMISING) BIRKENHEAD PATENT AUTOMATIC CARBURETTOR. (PATENTED IN ALL PRINCIPAL COUNTRIES).… | ||
| 04-page078 | Blueprint for an experimental governor control arrangement on a carburettor for the 40/50 HP (Phantom I) chassis. | ||
| View original record | [ "Arrangement of Governor Control on Carburettor.", "for 40/50 H.P. (Phantom I) Chassis.", "Experimental", "CARBURETTOR DEPT", "T.O. & D.O.", "BICKENHILL" ], | ||
| 04-page079 | Blueprint showing the arrangement of an L.B. Cylinder to accommodate a new valve. | ||
| View original record | ROLLS-ROYCE LIMITED ALTERATIONS A 4329 / 17.5.15 165.A. ARRGT OF L.B. CYLINDER TO TAKE NEW VALVE. SCALE. FULL SIZE. DRG No H2393 | ||
| 04-page080 | Modification to the Goshawk 11+ carburetter air valve, with a suggestion from Mr. Royce for further improvement. | ||
| View original record | X4228 To BY. from E. c. to CJ. c. to Wor. c. to Hs. c. to EP. E2/M24.10.22. GOSHAWK 11+ CARBURETTER X.4228. We send herewith drawing No.LeC.1646 shewing the air valve of Goshawk-11 carburetter… | ||
| 04-page081 | Trial of lead or leather washers to prevent cracking in the Goshawk II carburetter float level window. | ||
| View original record | To Hs. X4228 BY/Shn2/DB.21.12.22. RECEIVED Hs DEC 21 1922 X.4228 - "GOSHAWK II" - CARBURETTER - FLOAT LEVEL WINDOW. Owing to the trouble being experienced in the Works with cracked and chipping glass… | ||
| 04-page082 | Agreeing to increase the weight of the Goshawk 11 carburetter float by three drams. | ||
| View original record | X4228 Hs BY9-P28.12.22. RECEIVED DEC 28 1922 Mr Shelton. c.c. HPT/Mr Ellis. c.c. He. GOSHAWK 11. CARBURETTER. RE. WEIGHT OF FLOAT. It is agreed that it is necessary to increase the weight of the float… | ||
| 04-page083 | Instructing to fix a stuck air valve on a carburetter. | ||
| View original record | To Hs. from R. X4228 RS/M10.1.23. 6-GOSHANK. X.4219 X.422 & It was reported to me that the air valve stuck open on this carburetter. Please see that it does not cause anyone trouble - have it made… | ||
| 04-page084 | Requesting an update on steps to reduce carburettor whistling on a 20 HP car. | ||
| View original record | X4228 FH21/DW/24.1.23. TO Hs. FROM FH. BJ. asks me what steps you are taking with a view to reducing the amount of whistling in the carburettor on the 20 H.P. car we tested recently and which, I… | ||
| 04-page085 | Tests to reduce carburettor noise on the 20 HP model. | ||
| View original record | W/S PN. from Hs. X.2.28 Hs8/LG30.1.23. NOISY CARBURETTERS ON 20 H.P. Luzzy We are carrying out a full series of tests in connection with this. We have two objects in view. One is to set a certain… | ||
| 04-page086 | Investigation into carburetter noise, specifically a whistling sound at certain speeds. | ||
| View original record | To R. from Hs. c. to CJ. c. to N. c. to Ds. c. to BY. CARBURRETTER NOISE. X4228 X2768 With reference to the complaints on carburetter noise, we are carrying out two lines of investigation :- (1)… | ||
| 04-page087 | Carburetter noise, comparing different types of throttle valves. | ||
| View original record | contd:- -2- entrance to the pipe half-way along the chassis, the noise from the carburetter is entirely eliminated. It is not until one arranges the air inlet in this way that one realises the amount… | ||
| 04-page088 | Investigation into the cause of carburettor whistling on a Goshawk-11 engine. | ||
| View original record | X4228 CARBURETTER WHISTLING ON GOSHAWK-11. The most noticeable whistle is at approximately 1/6 open throttle, increasing with engine speed. There is also a very slight whistling at very low engine… | ||
| 04-page089 | Investigation into curing a low speed whistle and suction noise from a carburettor. | ||
| View original record | contd:- -2- [Handwritten note next to diagram] This space must be filled up to prevent whistling. [Text on diagram] CARB. TUBE The low speed whistle was then investigated and found to be proceeding… | ||
| 04-page090 | Investigation into the cause and remedy for a whistling carburetter on a Goshawk-11 engine. | ||
| View original record | X4228 CARBURETTER WHISTLING ON GOSHAWK-11. The most noticeable whistle is at approximately 1/6 open throttle, increasing with engine speed. There is also a very slight whistling at very low engine… | ||
| 04-page091 | Investigation into curing low-speed whistle and suction noise in a carburetter. | ||
| View original record | contd:- -2- Cylinder block Carb. top This space must be filled up to prevent whistling The low speed whistle was then investigated and, found to be proceeding from the low speed jet venturi. This… | ||
| 04-page092 | Investigation into a whistling carburetter on a Goshawk II engine. | ||
| View original record | X4228 Carburetter whistling on Goshawk II The most noticeable whistle is at approximately 'E' open throttle, increasing with engine speed. There is also a very slight whistling at very low engine… | ||
| 04-page093 | Investigation into the cause of a whistling noise from a G.U. carburettor. | ||
| View original record | 2 throttle and a Claudel barrel throttle; there is nothing to choose between the butterfly and piston type throttle, but Claudel throttle appears slightly quieter than the other. It was then noticed… | ||
| 04-page094 | Notes on modifying a carburettor needle and diffuser to cure whistling and suction noise. | ||
| View original record | 3. cured by removing the top step of the 'petrol diffuser' portion of the needle. [Diagram of a carburettor needle] Remove shaded portion to cure low speed whistling. An attempt was then made to cure… | ||
| 04-page095 | Materials for petrol joints on the 20 HP carburetter, proposing cork or leather as superior alternatives to fibre. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. X 4228 HS3/LG6.2.23. PETROL JOINTS X.4228. X.4266 On the 20 HP. carburetter we have a whole lot of petrol joints which have to be made tight by… | ||
| 04-page096 | Carburettor noise, detailing modifications tested to reduce suction noise without power loss. | ||
| View original record | XC228 To R. from Hs. c. to GJ. c. to Z. c. to Ls. c. to HY. Hs4/106.2.23. CARBURETTER NOISE. XC228 We have proved that if we do away with the annulus left between the spigot on the carburetter and the… | ||
| 04-page097 | Baffle to achieve the same degree of silence as a long hot air pipe, with a standardisation sheet being circulated. | ||
| View original record | contd: -2- baffle we can obtain the same degree of silence as with the long hot air pipe. We are sending round a standardisation sheet for this. Hs. | ||
| 04-page098 | Issue of a whistling carburettor on an open demonstrating 20 HP car. | ||
| View original record | X4228 RECEIVED FEB 9 1923 To Hs. from BJ. Copy to HP. BJ3/H9.2.23. Open Demonstrating 20 H.P. I understand that you will be discussing with P.N. the possibility of stopping the whistling of the… | ||
| 04-page099 | Noisy brake lever, a speedometer showing kilometres, and a whistling trouble. | ||
| View original record | X4228 To EP. from BJ. c. to PN. Hs. BJ7/H26.2.23. CHASSIS 46-G-1. X.4228. X.4253 X.4077 Thank you for EP7/H23.2.23. Please let me know the cost of changing the brake lever. Would it not be possible,… | ||
| 04-page100 | Alterations for a noisy brake lever and a whistling throttle on chassis 46-G-1. | ||
| View original record | X4228 BJ. c. to P.N. c. to Hs. EP5/H28.2.23. re. Chassis 46-G-1. X4228 With reference to your BJ7/H26.2.23 - I have discussed with Hs. the possibility of altering the present plunger fitting to cure… | ||
| 04-page101 | Urgent need to rectify rattling brake levers and whistling carburetters on 20 HP chassis. | ||
| View original record | X4228 To H.T. from B.J. -> Copies to: Hs. RJ9/H2.3.23. Chassis 46-G-1. X4228 X4283 With reference to your KP5/H28.2.23, I am glad to hear that arrangements are being made at once to prevent, if… | ||
| 04-page102 | Issues with rattling brake levers and whistling carburettors on chassis 46-G-1. | ||
| View original record | X.4228 To BJ. c. to Hs. c. to PN. c. to C. c. to SG. EP/Thn1/H5.3.23. RE. CHASSIS 46-G-1. X.4228. X.4253. With reference to your memo. BJ9/H2.3.23 :- (1) Brake levers rattling. (2) Whistling… | ||
| 04-page103 | The cause and modification of whistling carburetters and noisy brake levers on the 20 HP chassis. | ||
| View original record | X4228 To EP. from Hs. c. to BJ. c. to HY. c. to FH. c. to C. c. to Sg. Hs4/106.3.23. 20 HP. CHASSIS WHISTLING IN CARBURETTER. X4228 NOISY BRAKE LEVERS. X4257 As you are aware, the most frequent cause… | ||
| 04-page104 | Modifying carburetters and a proposed scheme for a floating stock of modified brake levers. | ||
| View original record | contd:- -2- whistles or does not whistle. To go round modifying all carburetters might do more harm than good. As regards the brake levers, we are now trying a scheme on the experimental cars and if… | ||
| 04-page105 | Actions to fix whistling carburetters and noisy brake levers on the 20 HP chassis. | ||
| View original record | X4228 To Hs. from B.J. Copy to EB. BJ5/H9.3.23. 20 H.P. Chassis. Whistling in Carburetter. Noisy Brake Levers. Y4228 X4253 I was glad to receive your H84/LG6.3.23. I have instructed our Test Dept.… | ||
| 04-page106 | Cover memo attaching a completed standardisation sheet for a low speed jet spindle and cone experiment. | ||
| View original record | X4228 ORIGINAL To CJ. and BJ. from Hs. c. to R. c. to War. c. to JA. c. to BY. c. to RG. c. to EP. c. to PH. Hs/LRC.3.23. X.4228 - LOW SPEED JET SPINDLE AND CONE. Attached is copy of completed… | ||
| 04-page107 | Standardisation of the low speed jet spindle and cone to prevent whistling noise and to strengthen the part. | ||
| View original record | E.E. 716 (D+2) D+S 168. 20-2-23 (3784) C 2500. STANDARDISATION of CHASSIS PARTS. COMPLETED 8.3.23. Date 23. Description of Parts. LOW SPEED JET SPINDLE AND CONE. Origin. To prevent whistling noise and… | ||
| 04-page108 | Standardisation and costs for the Low Speed Jet Spindle and Cone. | ||
| View original record | To Hs. from My/JW. My/JW/N2/139A/15.3.23. STANDARDISATION OF CHASSIS PARTS. X.4228 - LOW SPEED JET SPINDLE AND CONE. Receive herewith standardisation sheet and costs filled in. The old part has been… | ||
| 04-page109 | Modifications for rattling brake levers and whistling carburetters on the Goshawk chassis. | ||
| View original record | X4228 c. to Hs. EP/Thn2/H10.3.23. re. MODIFICATIONS ON GOSHAWK CHASSIS. (a) Brake Levers Rattling. X4253 (b) Whistling Carburetters. X4228 With reference to Mr. Hives' memo to me reference… | ||
| 04-page110 | Delivery of 20 HP cars with whistling carburettors and rattling brake levers. | ||
| View original record | To JLH from BJ. Copies to: Hs. X4228 BJ7/H12.3.23. 20 H.P. Whistling Carburetters and Noisy Brake Levers. X4228 X4253 With reference to your LE9/H10.3.23, you should please deliver cars with the… | ||
| 04-page111 | Carburettor adjustments for the Goshawk II engine, specifically regarding whistling and the use of varied thickness washers. | ||
| View original record | Y4228 HY/SmaB/DB.27.3.23. c. to MR. RE "GOSHAWK II" - CARBURETTER - SEC:DCDO. WHISTLING. - c/D6813. With further reference to memo HY/Man/DB.13.3.23. re closing up the annulus between the spray… | ||
| 04-page112 | Failures, faulty use, and petrol leakage from the starter carburetter on 20-HP cars. | ||
| View original record | X4228 c. to Hs. EP1/H13.4.23. re. 20-HP. Starter Carburetter Failures. We are now getting our 20-HP cars into service, and one of the most serious troubles we are experiencing is the failure of, or… | ||
| 04-page113 | Letter about the seizure of carburetter throttles for the 20-HP model, discussing materials and poor assembly of control pins. | ||
| View original record | XC228 BMc C. to Hs. C. to Sft. EP1/H18.4.23. re. SEIZURE OF CARBURETTER THROTTLES - 20-HP. With reference to the conversation I had with you a short time ago to the effect that we were having trouble… | ||
| 04-page114 | Road tests for 20 HP carburation modifications on a Goshawk engine. | ||
| View original record | Y4228 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hall/LG10.5.23. 20 HP. CARBURATION. + C4228 From tests on the road we have proved that the original Goshawk-1 with the latest scheme of… | ||
| 04-page115 | Engine performance improvements, including consumption, torque, and acceleration, with details of ongoing vehicle testing. | ||
| View original record | contd:- -2- We are doing this at present. From the results we have obtained so far, however, we can safely say that the consumption will be improved 10 or 12% and that the low speed torque will be… | ||
| 04-page116 | Poor response and adjustment of the throttle lever on the 20 HP chassis. | ||
| View original record | To HY. From BJ. Copies to: -> Ha. -> H. V6225 BJ6/H31.5.25. Throttle Lever on 20 H.P. X4228 We have often noticed with the 20 h.p. chassis that the throttle lever has to be set at perhaps half way… | ||
| 04-page117 | Seizing of the Goshawk II carburetter's throttle valve spindle and potential solutions. | ||
| View original record | To Hs. [REDACTED] X4228 BY/ShnB/DB.6.6.23. RE "GOSHAWK II" - CARBURETTER - SEIZING OF THROTTLE VALVE SPINDLE. We are still having trouble with the seizing of the P.B. Throttle Valve Spindle, and would… | ||
| 04-page118 | Tests to resolve throttle valve spindle seizure in the 20 HP chassis carburetter. | ||
| View original record | X4228 BY/Bhm/DB.12.6.23. c. to Hw. RE 20 HP CHASSIS - CARBURETTER - SEC:5080. THROTTLE VALVE SPINDLE SEIZURE. In connection with the complaints re seizure of the throttle valve spindle E.50624 in the… | ||
| 04-page119 | Adopting a plug type starting carburetter cock for the 20HP model. | ||
| View original record | X4228 Mr Shelton. c, Hq. BY8-P21.6.23. 20HP. STARTING CARBURETTER COCK. Hs, is anxious for us to adopt a plug type coack in place of the parallel as soon as possible. I believe we have a scheme for… | ||
| 04-page120 | Requesting a dimensional change to phosphor bronze bushes for a 20 HP chassis carburetter. | ||
| View original record | XU28 BY/Bhm7/DB.6.7.23. c. to H.R. RE 20 HP CHASSIS - CARBURETTER - SEC:SC50. With reference to the fitting of cast phosphor bronze bushes in the 6 sets of 20 HP spray chambers, as instructed in our… | ||
| 04-page121 | Carburettor restrictor issues in 20 HP demonstration cars following a visit. | ||
| View original record | X4228 To Hs. & EP. from R. c. to CJ. BJ. c. to FN. BY. R7/12 26.7.23. RE. 20 HP. DEMONSTRATION CARS. VISIT TO W.W. - BY, BJ. AND FN ON 13.7.23. KC45 X4228 The blue and grey open cars appear to have… | ||
| 04-page122 | Carburetter control, the unsatisfactory position with tapers, and plans for retrospective action. | ||
| View original record | LURIE C. [illegible] XP. C. [illegible] C. [illegible] C. FW. C. BY. C. Hs. EP4/H23.7.23. re. CARBURETTER CONTROL. With reference to the instructions contained in the last paragraph of your memo… | ||
| 04-page123 | Carburetter control modification standardisation sheet for the 4-Goshawk-II car. | ||
| View original record | To R. from Hs. c. to CJ. c. to BJ. c. to Wor. c. to BY. c. to EP. c. to FN. X4228 Hs1/LG25.7.23. EP4/H23.7.23 - CARBURETTER CONTROL. X4228 X4229 A standardisation sheet was sent round on the 26th.Feb.… | ||
| 04-page124 | Preferred carburetter settings and a warning against incorrect mixture configurations. | ||
| View original record | To PN. from R. c. to CJ. BJ. EP. c. to Hm. Hs. H. Br. X4228 X.4226 X.2766. R1/1227.8.23. With reference to your memo. PN13/DN23.8.23. sent to EP. at WW. which arrived after he had left. I prefer… | ||
| 04-page125 | Complaint about the carburetter control cone taper on the 20-HP chassis and potential retrospective action. | ||
| View original record | X4228 c. Hs. EP6/HS.9.23. re. Carburetter Controls - 20-HP Chassis. With reference to the recent complaint from R. re carburetter control to the effect that the cone was too rapid, i.e. 1 in 5, which… | ||
| 04-page126 | Necessity and expense of correcting carburetter controls on 334 cars. | ||
| View original record | Y4228 Bp. c. Hs. CARBURETTER CONTROLS. BY11-P7.9.23. Referring to EP6/H5923, before deciding to go to such an extreme as correcting 334 cars I would like to discuss the matter with Hs, and receive his… | ||
| 04-page127 | Inconsistent H.S. Air Valve action on the 20 HP Chassis carburetter, proposing a trial of experimental sets with a slack thread. | ||
| View original record | to Hs. c. to Hs. c. to ED c. to Alt. L4228 BY/Ehn4/DB.3.10.23. X.4228 - 20 HP CHASSIS - CARBURETTER - SEC:5080. With reference to recent complaints of the inconsistent action of the H.S. Air Valve,… | ||
| 04-page128 | Measuring frame deflection on a 20 HP frame with a static load. | ||
| View original record | X4228 EXPERIMENTAL REPORT. R.R. 499 (40-42) 42.12.7-500-J.H.P. COPIES TO: BC BJ. WOR By E Da EP. PN. OY Exptl. No. X.4260 X.4228 REF. Hs3/LG10.10.23. OBJECT OF TEST. To measure frame deflection on 20… | ||
| 04-page129 | Diagram and chart analyzing 20 HP frame deflections under a distributed load of 5200 lbs. | ||
| View original record | F.52766 TOTAL LOAD 5200 lbs DISTRIBUTED THUS:- 400lbs 400lbs 400lbs 500lbs 500lbs 500lbs 500lbs 300lbs 300lbs 1 — OR — 4 2 — ORIGINAL TIE RODS 3 — OR — 5 VIEW OF FRAME STIFFENERS FITTED ON NOS 4 & 5… | ||
| 04-page130 | Querying the continued use of Monel metal for 20 HP chassis carburetter filters, when a change to brass was previously requested. | ||
| View original record | To Hs. X4228 BY/Shn7/DB.11.10.23. RE 20 HP CHASSIS - CARBURETTER FILTER. We hear from the Order Office that all 20 HP Carburetter filters up-to-date, have been made in Monel metal, whereas our drawing… | ||
| 04-page131 | Faulty carburetter petrol filter on the 20-HP chassis, allowing fluff and foreign matter to enter the jets. | ||
| View original record | BY: Hs. SFF. for Mr. Ellis. X4228 EP2/H12.10.23. 20-HP Chassis. Faulty Carburetter Petrol Filter. We are continually having trouble with fluff and foreign matter getting into the carburetter jets,… | ||
| 04-page132 | Suggestion to relocate the petrol supply cut-off tap on the 'Goshawk' model for easier access in an emergency. | ||
| View original record | From Pt.To:- Hs. Y4228 Pt6/CW12.11.23. It is obvious that the Needle Valve controlling the supply of petrol from the Vacuum Tank to Carburetter on the 'Goshawk', has been placed in its present… | ||
| 04-page133 | Failure of the high speed jet control in a 20-HP carburettor. | ||
| View original record | K4228 BY. c. Hs. c. SFI. for Mr. Ellis. EP4/H20.12.23. re. 20-HP Carburetter. Failure High Speed Jet Control. It has been reported to us on one or two occasions that the carburation has been at fault,… | ||
| 04-page134 | Failure of a high-speed jet control on a Solex carburettor, with a proposed design improvement. | ||
| View original record | Y4228 [Strikethrough] Mr. B. [/Strikethrough] [Strikethrough] C. C. Ha. [/Strikethrough] [Strikethrough] C. C. Mr. Shelton. [/Strikethrough] BYG-P27.12.23. SOLEX CARBURETTER. [Strikethrough] RE… | ||
| 04-page135 | Customer complaints about a rattling petrol pipe on the 20-HP Chassis, requesting a redesign for better clearance or support. | ||
| View original record | BYM. c. Hs. X4228 EP14/H2.1.24. re. 20-HP Chassis. Rattle from Petrol Pipe Autovac to Carburetter. This feature is complained of by several customers owing to 'rattles' taking place on the engine. I… | ||
| 04-page136 | Failures of a carburetter high-speed jet sticking on a 20-HP chassis. | ||
| View original record | X4228 BY. c. Hs. c. Wor. EP1/H19.1.24. 20-HP Chassis . Carburetter High Speed Jet Sticking With reference to your instructions, BY/SS1/DB16.1.24, we have had two further failures due to the sticking… | ||
| 04-page137 | Production points for a modified air inlet on a 20 HP car. | ||
| View original record | To EY. from Hs. c. to EY/Shn. Y4228 Hs3/LG29.4.24. PRODUCTION POINTS. MODIFIED AIR INLET - 20 HP. CAR. Care must be taken that there are no sharp edges left anywhere in the air stream, or whistling… | ||
| 04-page138 | Standardisation document for a carburetter air inlet, proposed to reduce engine noise. | ||
| View original record | RR 758 (10m) (L.591) 3-11-23) MP 281287 X 14228. Completed 22/5/24 STANDARDISATION of CHASSIS PARTS. Date 29.4.24. Description of Parts. CARBURETTER AIR INLET. X No. 4228 Drawing No. Part List Origin.… | ||
| 04-page139 | Modified air inlet for a 20 HP car, detailing noise reduction and performance improvements. | ||
| View original record | R.R. 452a. (200) (T.A. 433 20-2-34) A.R.S. EXPERIMENTAL REPORT Expt. No. 4238 REF: Hs/TMW/LG29.4.34. MODIFIED AIR INLET FOR 20 HP. CAR. We recommend that Air Intake No.E.53197 be made standard. At… | ||
| 04-page140 | Required modification to the Goshawk 11 carburetter controls. | ||
| View original record | X4228 To BY. from DA/EV. c. to Hs. DA/EV2/M7.7.24. X.3730 X.4239 X.4228. GOSHAWK 11. MODIFIED CARBURETTER CONTROLS. We send herewith N.sch.1820 shewing a spherical fitting for both ends of the… | ||
| 04-page141 | Modifications to the Goshawk III carburetter and its filter design. | ||
| View original record | To BY. From E. c. to CJ. HS. X5080 E2/107.7.24. GOSHAWK lll. X.9080 CARBURETTER. X.9230 X5080 We send you herewith drawing No.Lec.1900., shewing Goshawk lll. carburetter with exhaust heated throttle.… | ||
| 04-page142 | Goshawk III four-speed gearbox, detailing the casing, declutching gear, and method for preventing rotation of the reverse shaft bearing. | ||
| View original record | X 5080 To EY. from AJS. c. to CJ. c. to Hs. AJS1/M27.8.24. GOSHAWK III. FOUR SPEED GEARBOX. X.4980. X.5080 X.5310. We send herewith drawing No. LeC.1913., showing particulars of the casing,… | ||
| 04-page143 | Letter discussing experiments with the Goshawk starter carburetter for improved slow running on the EAC.2 chassis. | ||
| View original record | To BY. } FROM R. To HB. } S E C R E T. X4228 R2/M16.10.24. EAC.2. CHASSIS. X.8770 X.4219 X.4228. You do not say the date on which we are to expect you with the EAC.2. We have been making some… | ||
| 04-page144 | Required weight for a 20 HP engine's float for use with Benzol fuel. | ||
| View original record | X.4228 To Hs. from Hs/TSW. Hs/TSW/LG1.1.25. 20 HP. FLOAT FOR BENZOL. X4228 X.53 Herewith float which has been weighted to give correct level in float chamber when using Benzol. Particulars of weight… | ||
| 04-page145 | Schedule of alterations for the 20 HP carburetter as requested by Mr. Royce. | ||
| View original record | To BY. from E. c. to CJ. Hs. X5080 E1/M12. 8. 25. 20 HP. CARBURETTER. E.5080 X.4228 Please find attached a schedule of alterations which Mr. Royce wishes to incorporate in the 20 HP. carburetter. The… | ||
| 04-page146 | Changing 20 HP and 40 HP filters in the back tank and carburettors to a fine mesh to solve choked jets. | ||
| View original record | To Hs. from R. c. to CJ. BY. H. V5080 R3/M25.8.25. RE. 20 HP. AND 40 HP. FILTERS IN BACK TANK AND CARBURETTERS. X.8080 X.5080 X.8190 You will remember that we are expecting both these to be changed to… | ||
| 04-page147 | Modifications to a 20 HP carburetter and the fitting of cutouts. | ||
| View original record | To Hs. from R. c. to CJ. BY. Y5080 R4/M25.8.25. 20 HP. CARBURETTER. X.5080 X.5490 +5193 We are hoping to receive a modified carburetter for the 20 HP. here, having a lighter piston, finer filter,… | ||
| 04-page148 | Carburetter modifications for the 20 HP car to increase power and address performance issues. | ||
| View original record | To Hs. from R. c. to CJ. BY. 45080 R7/10.9.25. 20 HP. CAR. X.5080 X.5770 X.5070 We have some modifications instructed for the carburetter which we hope will give more power, if we take the trouble to… | ||
| 04-page149 | Solutions for a broken flange on a Goshawk induction pipe and proposing further tests. | ||
| View original record | To Hs. To HY. } FROM R. c. to CJ. X5080 RE. GOSHAWK INDUCTION PIPE (BROKEN FLANGE). X.5070 X.5080 This should have been referred to E. at WW. I do not like the idea of screwing it in because it does… | ||
| 04-page150 | Attempts to increase power on the 20 HP engine and details of chassis weight increases. | ||
| View original record | EXPERIMENTAL REPORT. X5080 COPIES TO: HCJ BJ WOR By E Day PN OT RG Expt. No. X5079 REF. Hs1/LG17.2.26. OBJECT OF TEST. To increase power on 20 HP. TESTER. A. C. Lovesey. CONDITIONS. Test bench.… | ||
| 04-page151 | Experiments on a 20 HP engine to determine if power output can be increased by using a larger carburetter and induction passage. | ||
| View original record | 20 HP. ENGINE - POWER WITH LARGER CARBURETTER THROTTLE AND 1.5" DIAMETER PASSAGE IN CYL. BLOCK. The following experiments were carried out, as requested, to determine if the power output of the 20 HP.… | ||
| 04-page152 | Engine power output tests comparing standard and large carburettor throttle sizes and throat sizes. | ||
| View original record | contd :- -2- valve, dashpot, and spring were retained. The power curves given below are the average of several tests. The standard silencing arrangements were used. | R.P.M. | B.HP. Std. pipe and… | ||
| 04-page153 | Carburetter metering issues and maximum power tests on a 20 HP engine. | ||
| View original record | contd :- -3- employed for each test. With regard to the metering of the large throat carb., it was found to be bad at low depressions and possessing a very weak region just before the high speed jet… | ||
| 04-page154 | Test report page comparing a standard carburetter with a diffuser jet carburetter, including a performance graph. | ||
| View original record | contd :- -4- This simple test however is sufficient to show that with the present engine and type of carburetter used there does not seem much possibility of obtaining any appreciable power increase… | ||
| 04-page155 | Carburettor experiments, comparing a diffuser and a light aluminium air valve against standard components. | ||
| View original record | contd :- -5- show the relationship between specific consumption and mean effective pressure with varying mixture strengths for each carb. at 750 r.p.m. It will be seen that there is a very slight gain… | ||
| 04-page156 | Experiments with carburetter throat size and diffuser jets to increase power in the 20 HP engine. | ||
| View original record | contd :- -6- The metal thickness between the cylinder bores and the induction passage with the large diameter is .075" and makes casting more difficult. CARBURETTER THROAT SIZE. By increasing the… | ||
| 04-page157 | Proposal to revert to the original method of fixing the spring in the air valve to improve reliability. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. COMPLETED 22.2.26. Date 11.1.26. X No. 5080 No. 3080 Description of Parts: FIXING OF SPRING IN AIR VALVE. Origin: To improve reliability. Experimental Test Report: It… | ||
| 04-page158 | Complaint about leakages from the window on the 20 HP carburetter float chamber, suggesting its removal. | ||
| View original record | X.5080 HS. BY14/H. 1.8.26. 20 HP. WINDOW ON CARBURETTER FLOAT CHAMBER. EP. complains that he is constantly getting leakages occurring at the joints for the little/window to observe the petrol level.… | ||
| 04-page159 | Proposal and approval to delete the window in the float chamber to prevent leaks. | ||
| View original record | RR. 756. (100) (2M-12-24) WG 30122 COMPLETED 16.3.26 X5080 STANDARDISATION of CHASSIS PARTS. Date 5.3.26 Description of Parts: DELETION OF WINDOW IN FLOAT CHAMBER. Origin: To avoid leaks. Experimental… | ||
| 04-page160 | Improvement to the carburetter for the 20 HP model. | ||
| View original record | EXPERIMENTAL REPORT X5080 S.S. 425 (50 Bks) GL st 12-25. J.R.D. COPIES TO R.C. B.I. WOR. B.Y. E.Da. E.P. PN. OY. RG Expl. No. 5080 REF. Hs9/LG18.3.26. OBJECT OF TEST. Improvement to carburetter on 20… | ||
| 04-page161 | Test report comparing a new light aluminium air valve with the standard brass valve for a 20 HP carburetter. | ||
| View original record | 20 HP. CARBURETTER WITH ALUMINIUM AIR VALVE. The new light aluminium air valve was tested in a standard 20 HP. carburetter unit where it was proved to possess the definite advantage of commencing to… | ||
| 04-page162 | Performance analysis chart and text for a 20HP carburettor, detailing mixture control against engine RPM. | ||
| View original record | contd :- -2- STD CARBURETTOR - 20HP. MARKING CURVE FOR GRADUALLY INCREASING LOAD UP TO 2250 RPM WHEN ENGINE IS THEN FULL THROTTLE. ABOVE NORMAL LINE INDICATES WEAKNESS - BELOW RICHNESS. GRAPH TEXT:… | ||
| 04-page163 | Method for developing carburetter air ports using an adjustable test rig to achieve the correct mixture. | ||
| View original record | contd :- -3- starting to spray when the throttle is suddenly opened. It was thought that by slight alteration to the shape of the ports - both those operated by the diaphragm and the air valve - a… | ||
| 04-page164 | Carburetter development, detailing the relationship between depression and air valve lift, port design, and results from a 10,000-mile road test. | ||
| View original record | contd :- -4- We then take a curve connecting depression and air valve lift on a normal carburetter in which the air valve is governed by the spring to be employed. It is clear that for a given spring… | ||
| 04-page165 | Report page discussing carburettor jet performance, with blueprint diagrams of an adjustable carburettor and high-speed choke. | ||
| View original record | contd :- -5- 'well' being rather on the small side for the demands of high acceleration. We are however persevering with this jet and although the metering does not seem so good as obtained with the… | ||
| 04-page166 | Need for a locking device on a float chamber lid for carburetters. | ||
| View original record | X5080 To Hs. } FROM E. To BY. } E1/M23.3.26. X.8080 X.8080 RE. LOCKING FLOAT CHAMBER LID. In reply to memos. Hsl/LG19.3.26. and HY3/H19.3.26. I have looked into this matter and cannot see any better… | ||
| 04-page167 | Addition of locks for the float chamber lid on the 20 HP model. | ||
| View original record | X5080 c.Hs. -- BY8/H. 26.3.26. LOCKS FOR FLOAT CHAMBER LID. -------------------------- Referring to E1/M.23.3.26. I should consider it equally desirable to lock the 20 HP. float chamber lid as the… | ||
| 04-page168 | Alterations for a 20 HP, 10,000-mile car currently in France. | ||
| View original record | Hs. ) To DA. } FROM R. BY. } LE CANADEL: c. to CJ. BJ. X5080 R2/M31.3.26. 20 HP. 10,000 MILES CAR AT PRESENT IN FRANCE. X.5840a X.5500 X.5430 X.5080 I was very pleased with this, but there are one or… | ||
| 04-page169 | Request to produce designs for locking the float chamber lids for two chassis. | ||
| View original record | X5080 To EY, from E. c. to Hs. E2/M16.4.26. LOCKS FOR FLOAT CHAMBER LID. X.8080 X.5080 EE In reply to your EY8/H26.3.26., we should be glad if you would get out designs for locking the float chamber… | ||
| 04-page170 | Approval for testing schemes for float chamber cover locking devices on Phantom & 20 HP models. | ||
| View original record | To BY. from E. c. to BJ. Hs. X5080 E1/MM/3.7.26. FLOAT CHAMBER COVERS - PHANTOM & 20 HP. X. 5080 X. 5080 Please note Mr. Royce has approved of schemes 759 and 760., shewing float chamber cover locking… | ||
| 04-page171 | Request for a new anti-detonating cylinder head casting for a 20 HP engine. | ||
| View original record | To E. from R. c. to Wor. BY. BJ. Hs. XVD80 R7/M8.11.26. 20 HP. ENGINE. X.5050. X.5080. We want a new cylinder head casting with freer passageways, anti-detonating, and carburetter on left side (as… | ||
| 04-page172 | Proposing to swap and compare carburetters and induction systems between a Lorraine car and a 20 HP chassis. | ||
| View original record | To Hs. from R. c. to BJ. X5880 R8/M9.11.26. RE. LORRAINE CAR. X.3588 X.5080 X.5070 I think it would be worth while to rig up one of our 20 HP. carburetters on the Lorraine, and also the Lorraine… | ||
| 04-page173 | Customer complaint for vehicle GOK-75 regarding weakness of carburation and poor performance. | ||
| View original record | S/W Hs. X5080 C12/C1.1.27. I think you were asking recently for instances of choked jets. GOK-75 has been sent to the Works, the owner complaining that after about 40 miles running there is every… | ||
| 04-page174 | Need to examine choked petrol jets to understand the necessary filter type. | ||
| View original record | To C. from Hs. c. to CWB. X50810 Hs2/LGS.1.27. Replying to C12/Cl.1.27. It was arranged when CWB. was in Derby sometime ago, that we should receive samples of choked petrol jets - i.e. when a car went… | ||
| 04-page175 | Investigation into choked jets on a 20 HP model, and the dispatch of a fluff sample for analysis. | ||
| View original record | S/W. Hs. X5090 CWB3/GM/11-1-27. Hs 20 HP. CHOKED JETS. Reference your Hs2/MGS.1.27. I am now making enquiries of the various people whom I circulated some six weeks ago, asking them to collect any… | ||
| 04-page176 | Various induction pipe and carburettor configurations for the Phantom engine. | ||
| View original record | To Hs, E, EY. from R. 45080 c. to BJH?, M, PA. R/M20.2.27. ROLLS-ROYCE DERBY PHANTOM INDUCTION PIPE - X.8070 X.1053 PRESENT STD: X.8080 X.1452 X.5080 Agreed that this is better than many cars, some of… | ||
| 04-page177 | Use of gauze filters versus slit filters for the Phantom and 20 HP models. | ||
| View original record | To Hs. CWB. BY. EP. from R. c. to BJ. Wor. E. RG. DA. X5080 R2/M12.3.27. PHANTOM AND 20 HP. RE.FILTERS. X.3701 X.8080 X.5080 I do not object to a lengthy trial of any promising filter, but I think… | ||
| 04-page178 | Choking of low speed carburettor jets on a 20 HP car, chassis GYK-48. | ||
| View original record | S/W. Hs. Copy to:- EF. V5080 CWB10/GM/15-3-27. CHOKING OF LOW SPEED CARBURETTOR JETS 20. H.P. CHASSIS NO. GYK-48 - T. SIMPSON. You are probably aware that we have had very considerable trouble with… | ||
| 04-page179 | The finish of 30 HP low-speed jets. | ||
| View original record | X5090 To CHB, from Ha/Sn. Ha/Rn12/LG16.3.27. c. to EP. LOW SPEED JET - 30 HP. The finish of the low speed jets is receiving attention. Ha/Sn. | ||
| 04-page180 | Instructions and parts list for a carburetter modification on a 20HP Chassis. | ||
| View original record | c. to Hs. X5080 BY/CS7/DB.22.4.27. Re 20HP Chassis - Carburetter - Sec:5080. We send you herewith two blueprints off the following:- E.54392 - Carb:Spray Chamber which replaces E.52813. Will you… | ||
| 04-page181 | Letter to Stromberg Motor Devices Ltd. requesting to test their carburetters on a 20 HP car engine. | ||
| View original record | X5080 Expl: Dept: X4660 28th. May 1927. The Stromberg Motor Devices Ltd., Nulman's St, & Cheyne Walk, Chelsea, S.W.10. Dear Sirs, We should like to try two of your carburetters on our 20 HP. car… | ||
| 04-page182 | Continuation of a letter discussing desired carburetter performance features and trials. | ||
| View original record | contd :- -2- Good 'pick up' from slow running on top gear when the throttle is suddenly opened is another of the desirable features we wish to preserve. Apart from the use of two carburetters, we also… | ||
| 04-page183 | Suggestion for improving an air valve to prevent corrosion and sticking by using cathode treatment or a different alloy. | ||
| View original record | Hs. BY. from R. c. to BJ. Wor. E. X5080 RS/W7.9.27. 40/50 HP. & 20 HP. CARBS. X.5080 X.8080 X.4351 It will be remembered that I experienced corrosion of air valve, causing sticking. The following is… | ||
| 04-page184 | Experiments with Phantom carburetters concerning high induction pipe depressions and power output. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. An experimental Phantom cHs/ACLl/LG19.9.27. PHANTOM CARBURETTERS. REASONS FOR HIGH INDUCTION PIPE DEPRESSIONS. At various times… | ||
| 04-page185 | Carburettor performance, comparing a 'straight through' type with existing Claudel and Zenith systems on Phantom, Goshawk and 20 HP models. | ||
| View original record | contd :- -3- could be reduced by using a 'straight through' type of carb. on the existing std. induction systems. On the Phantom an old type horizontal Claudel was attached to the hot spot bend and a… | ||
| 04-page186 | Summary of carburetter test results for the Phantom and 20 HP models, discussing power gains and future testing. | ||
| View original record | contd :- -4- very good distribution without any heat. We may summarise these carburetter tests by saying that experimental proof has been obtained to shew that no appreciable gain in power results by… | ||
| 04-page187 | Power curve graph for the Lighting Phantom engine, showing an increase due to a low deflection carburettor. | ||
| View original record | LIGHTING PHANTOM POWER CURVE (SHEWING INCREASE DUE TO LOW DEFLECTION CARBURETTOR) ENGINE No. 100 R.M. COMPRESSION RATIO 4.6 TO 1 MAIN TUBE 36mm MAIN INLET & SECTION 7mm SQUARE CARBURETTOR:- N.T.P.… | ||
| 04-page188 | Power curve graph for a Phantom engine, showing the increase due to larger chokes in the carburettor. | ||
| View original record | STANDARD PHANTOM POWER CURVE (SHEWING INCREASE DUE TO LARGER CHOKES IN CARBURETTOR) ENGINE No. RE 225. COMPRESSION RATIO = 4 1/2 TO 1 STANDARD INDUCTION PIPE REAR EXHAUST SYSTEM (LATE SILENCER) CURVES… | ||
| 04-page189 | Customer's report on a choked low-speed carburettor jet on a 20 HP model. | ||
| View original record | S/W. Hs. X5080 CWB3/GM/23-9-27. Re: CHOKING OF LOW SPEED CARBURETTOR JETS 20 H.P. The following is an extract from a letter received from Miss E. Simpkin with reference to GMJ-18. "I am very glad I… | ||
| 04-page190 | BJ to Hs returning a signed standardisation sheet regarding mixture control on the column. | ||
| View original record | X5080 To Hs. from BJ Standardisation Sheets. BJ8/E7/10/27 Referring to your Hs1/LG6/10/27 I return here- with Sheet No.5080/5430, Mixture Control on Column, which I have signed. I am taking up the… | ||
| 04-page191 | Standardisation of chassis parts, specifically the mixture control on the column. | ||
| View original record | A.M. 726 REVISED (10M) (B.C.&S. D-18-26) NO. S/1587. COMPLETED 7.10.27 STANDARDISATION of CHASSIS PARTS. BOX: SO BOX Date 23.5.27 K426 X No. 5080 / 5430 Drawing No. Sch No. 2354 Part List P. 54863… | ||
| 04-page192 | Introduction of a new part for the 'M' Series chassis, including test date and costs. | ||
| View original record | STANDARDISATION OF PARTS (1). The number of the first chassis on which the new part will be fitted. 'M' Series. (2). Date when the chassis will be handed to test. 1.4.28. (3). Cost of scrapped… | ||
| 04-page193 | Whistling noise from 20HP carburettors and a proposed modification. | ||
| View original record | X5080 HS. Mx/McM3/T16.1.28. re 20HP Carburettors We are constantly experiencing a certain amount of trouble with whistling carburettors, and in a large number of case, a considerable improvement can… | ||
| 04-page194 | Modification of the throttle valve drawing for the 20 HP chassis carburetter. | ||
| View original record | Mr. Hs. c. Hs. c. Sft. X5080 BY/Cgh7/G.18.1.28. re 20 HP. CHASSIS - CARBURETTERS. With reference to Mx/MCM3/T.16.1.28. we have modified our detail drawing of the throttle valve showing a radius to be… | ||
| 04-page195 | Sending drawings Lec. 2627 and 2630 related to India 4 controls. | ||
| View original record | BY. from E. c. to BJ. Hs. +5080 ? E2/118.1.29. INDIA 4 - CONTROLS. X.5240 X.5080 ? We send you herewith drgs. Lec. 2627 and 2630 mentioned in our memo. E2/M22.12.28 to R. - copy to yourself. E. | ||
| 04-page196 | Potential engine improvements and design changes for a 20 HP Phantom scheme. | ||
| View original record | E. from R. c. to BJ. Nor. BY. Hs. 45080 HS/M28.2.28 INDIA 3. X.5170 X.5070 X.5230 X.5080 X.5010 X.5000 In addition to the 5 items given in DW/EV/24.2.28., we ought to get some engine improvements: (7)… | ||
| 04-page197 | Design schemes and specifications for the India 3 engine. | ||
| View original record | X5080 E. Hc. BY. from R. RL/M21.3.28. c. to BJ. Wor RG. FL. INDIA 3. ENGINE. X.5770 X.5070 X.5080 X.5080 You send me quite a lot of good schemes to choose from. Though this is very urgent we must have… | ||
| 04-page198 | Competitive pressures from Buick and Sunbeam, and outlining necessary engineering improvements for the 20 HP model. | ||
| View original record | Hs. E. from R. DA. BY. c. to HY. Wor. 75080 Rl/M27.3.28. 20 HP. X.3770 X.634 X.3080 X.5010 X.3531 Owing to the improvements (Hs/Hn's report) made by our competitors - amongst them Buick and Sunbeam -… | ||
| 04-page199 | Underfed type of induction pipe for the India 3 model, referencing blueprint Lec. 2543. | ||
| View original record | R. from E. c. to BJ. Hs. BY. X5080. EL/MS.4.28. INDIA 3 - UNDERFED TYPE OF INDUCTION PIPE. X.5070 X.5080 We send herewith blueprint of Lec. 2543 shewing the above arranged for the same head as the… | ||
| 04-page200 | With a diagram discussing an alternative design for an induction pipe feed. | ||
| View original record | E.W.H from R. Hs. BY. c. to B.J. Wor. RG. Fl. X 5080 R1/M7.4.28. INDIA 3. X.5070 X.5080 LeC.2541. I am not very pleased with this. Is it not better to feed the induction pipe thus :- Floats. Water… | ||
| 04-page201 | Design of induction pipes and a carburettor for the India 3 model, comparing it to the 'SS' Phantom. | ||
| View original record | X5860 Z. BY. from R. HS. c. to BJ. Wor. Rl/MS.4.28. INDIA 3 - INDUCTION PIPES. CARBURETTER ETC. X.5070 X.5080 You will notice that I favour this being exactly the same as 'SS' Phantom. Therefore as… | ||
| 04-page202 | Contingency plan for a new carburettor, proposing an alternative using an over-fed slot pipe. | ||
| View original record | Hs. from R. c. to DJ. c. to Wor. c. to HY. X5080 R2/M21.6.28. CARBURETTARS & INDUCTION PIPES. X.7080 X.5080 X.7070 X.5070 Should the new RR. vertical expanding carburetter be a long time in… | ||
| 04-page203 | Design and adaptation of an induction pipe for the India 3 project, referencing drawing Lec.2371. | ||
| View original record | BY. from E. c. to EJ. He. X5080 E2/104.7.28. INDIA 3. INDUCTION PIPE. X.3070 X.5230 X.5080 We send you herewith drg. Lec.2371 showing an induction pipe for India 3. of the underfed slot type. The drg.… | ||
| 04-page204 | Short memorandum regarding the positioning of jets in the 20 HP and 40/50 HP carburetters. | ||
| View original record | F. c. Hs. ----- X5080 BY/Cgh5/G.20.7.28. 20 HP. CARBURETTER. ------------------ With reference to E2/M16.7.28. both the high and low speed jets are above the restricted portion of the chokes in… | ||
| 04-page205 | Clarifying a proposed alteration to the 20 HP carburetter's choke and jet passage-way. | ||
| View original record | X. 5080 BY. from E. c. to Hs. E1/M25.7.28. RE. 20 HP. CARBURETTER. We are sorry if our memo. E2/M16.7.28., appeared in any way to impute that the LeC.drgs. had not been followed. It was not intended.… | ||
| 04-page206 | Modifications to the 20 HP mixture adjustment lever to resolve a running issue. | ||
| View original record | BY. from E. c. to BJ. Hs. X5080 E1/M24.8.28. 20 HP. MIXTURE ADJUSTMENT. X.5080 X.5080 Owing to the recent trouble with the mixture adjustment on the 20 HP. (fabric coupe used by R. during the… | ||
| 04-page207 | The poor slow running of the 20 HP engine, proposing a test with a Zenith carburetter. | ||
| View original record | Hs. from E. c. to BJ. X5080 E2/M24. 8. 28. RE. 20 HP. SLOW RUNNING. X.5771 X.5080 X.1053 The general standard of slow running on the 20 HP. has never been superlatively high, and this we have… | ||
| 04-page208 | Follow-up memo on a half-finished drawing for carburetor alterations for the 20 HP model. | ||
| View original record | X.5080 Hs. from R. c. to BJ. Wor. BY. R2/M26.10.28. "20 HP" A drg. (half finished) of the present carb. alterations for the new head was given to Hs. personally while at WW. so that the alterations… | ||
| 04-page209 | With a sketch detailing a simplified throttle control scheme for the 'India 4' model. | ||
| View original record | BY. from E. c. to Hs. X 5080 E1/M29.11.28. INDIA 4. CONTROLS. X.5240 X.5080 The scheme on which we are working out the above is as shown on sketch : EXISTING LAYSHAFT THROTTLE LAYSHAFT WITH FLOATING… | ||
| 04-page210 | Advance blueprints for 20 HP. controls. | ||
| View original record | X.5080 BY. from E. c. to BJ. Hs. E2/M.12.28. 20 HP. CONTROLS. Please find attached advance blueprints of the above (LeC's 281a/9) shewing what we have done. E. | ||
| 04-page211 | Design improvements and various ideas for carburation. | ||
| View original record | HS. from R. E. c. to Sg. Wor. +45060 RA/M1.2.29. S.S. & G4. RE. CARBURATION. X. 7080 X. 5080 19-XX has made me think that our old RR. carb. is better than I gave it credit for. At sudden full throttle… | ||
| 04-page212 | Customer's difficulty in dismantling a carburettor jet on a 20 HP car, proposing a design improvement. | ||
| View original record | R. from E. c. to SG. Wor. c. to Hs. HY. X.5080 21/MS.4.29. RE. 20 HP. CARBURETTER. X.5080 X.4118 Arising out of Mr. Minchin's letters concerning his 20 HP. car (with which car he is exceedingly… | ||
| 04-page213 | Potential engine and chassis improvements for a new car model. | ||
| View original record | E. DA. Hs. BY. from R. c. to SG. Wor. c. to PN. LUS. 75080 RS/M27.4.29. X.5770 20 HP X.5050 This will now become the 25 HP. if bored 3.250" and 25.3 HP. if bored 3.250. The new head (alux;) has 1.35… | ||
| 04-page214 | Sales management, performance, testing, and a specific gearbox fault observed on a customer's car. | ||
| View original record | contd :- -2- (1) For ease of management (confusion) of Sales. (2) Instruction Book and Spares. (3) To make a definite impression of gain in performance. (4) To save time and money in testing and… | ||
| 04-page215 | Technical memorandum on carburettor settings and performance on experimental larger bore 20 HP engines. | ||
| View original record | To R. from Hs/ACL. c. to SG. Mor. c. to L. DA. c. to SY. X5080 CARBURETTERS ON THE EXPL: LARGER BORE 20 HP'S. When using the std. carbn. on the larger bore expl: 20 HP. cars it was found the induction… | ||
| 04-page216 | Specification sheet for two experimental 20 HP engines, one with an aluminum turbulent head and the other a modified cast iron standard head. | ||
| View original record | contd :- -2- as to be ready with information should it be considered advisable to enlarge the std. model. SPECIFICATION OF ENGINES IN THE TWO EXPS: 20 HP%. Alum. turbulent head engine. (1) This head… | ||
| 04-page217 | Change in throttle valve and venturi passageway diameter for the 20 HP carburetter. | ||
| View original record | Hs. BY. from E. c. to SG. X5080 E2/M2.5.29. 20 HP. CARBURETTER. X.5080 X.5050 Referring to the throttle valve diameter on the above, R. thinks we should return to the 1.5" instead of the 1.375" at… | ||
| 04-page218 | Wire from Royce requesting a car for an election and the return of another car with carburetter modifications. | ||
| View original record | COPY WIRE. OK5080 WW. 25. 5. 29. HIVES. ROYCAR. DERBY. SEND US FOUR DOOR TWENTY FOR THE ELECTION BY MONDAY EVENING AND LET DRIVER RETURN 12-G-4 DURING THE-NIGHT WITH R.… | ||
| 04-page219 | 'S.S. Hot Spot Experiments' and the '20 HP Programme'. | ||
| View original record | X5080 To C.H.P. From Hs/ACL. c. LNS. c. GP. Hs/ACL2/AD16.10.29. X.7080 X.7230 X.5080 X.5230 S.S. HOT SPOT EXPERIMENTS. (1) Make up two sets of thermo couples which can be used on car or test bed. (2)… | ||
| 04-page220 | Outlining proposed engine modifications and testing procedures. | ||
| 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 the demensions on cylinder block, con.… | ||
| 04-page221 | Lighter air valve for a 20 HP carburetter. | ||
| View original record | Hs. x5080. BY2/N.11.11.29. Re: 20 HP. Lighter Air Valve to Carburetter. It is probable that you will have pieces made and may have tested them. The experiment in question was suggested by Mr Royce in… | ||
| 04-page222 | Air temperature readings taken at the carburettor intake under normal running conditions. | ||
| View original record | 15080. 29.11.29. AIR TEMP. - 14-G4. Under normal running conditions with the water temp. constant at 80°C., the air temperature taken at carb. intake records:- 40°C. F. Dodd. | ||
| 04-page223 | Requesting instructions for building a copper induction pipe to test a single Stromberg carburetter against a twin carburetter system for 'Japan'. | ||
| View original record | X5080 To EV. From Hs/ACL. Hs/ACLA/AD29.11.29. X.5070 X.5080 X.4660 RE: 'JAPAN' INDUCTION PIPE. R. wishes us to see if we can get similar results to those given by twin carburetters by means of one… | ||
| 04-page224 | Proposed scheme for improvements in carburetter design. | ||
| View original record | HS. BY. MR. CLAREMONT. FROM R. Copy to SG. WOR. S. X5080 RS/M3.12.29. X.7080. X.5080. IMPROVEMENTS IN CARBURETTERS In motor car work the call for power from the engine varies very greatly, namely, at… | ||
| 04-page225 | Technical description of different carburetter arrangements and their operational principles. | ||
| 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,… | ||
| 04-page226 | Page 3 of a memo regarding an air valve, a restrictor needle, and a 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. | ||
| 04-page227 | First drawing of a new expanding carburetter design based on a recent patent. | ||
| View original record | HS. BY. FROM R. R2/M4.12.29. C. to SG. WOR. RG. CAR CARBURETTERS. X.7080. X.5080. X1080 E. is very busy getting out a first drawing of the carburetter in accordance with our recent patent, namely,… | ||
| 04-page228 | Tests comparing a single carburetter with a two-branch induction pipe against a dual carburetter system on a 'Japan' engine. | ||
| View original record | TO L. From HA/ACL. C. to AL. HGR. C. to L. DA. C. to EV. Y5080 HA/ACL.1/WJ.28.12.29. "JAPAN" INDUCTION SYSTEM. TESTS WITH TWIN RANGING PIPE & SINGLE CARBURETTER. Y5070 Y5080 Y3605 Y4660 We have now… | ||
| 04-page229 | Comparison of single versus twin carburettor systems and their performance characteristics on a Phantom model. | ||
| View original record | -2- are, however, modifying this so as to get the low speed readings. Also the distribution was not good when using the two Claudels and we think considerable improvement can be made by taking the… | ||
| 04-page230 | Performance graph comparing two different induction pipe and carburettor setups for Engine No. 176.S-8. | ||
| View original record | 24-12-29 V763 INDUCTION PIPE COMPARISON (JAPAN) ENGINE No 176.S-8 COMPRESSION RATIO = 5.25 116° CAMSHAFT. STD. EXHAUST GAUGES CORRECTED TO N.T.P BRAKE HORSE POWER INDUCTION PIPES & TWO CLAUDELS HOBSON… | ||
| 04-page231 | Diagrams from tests of various induction pipe configurations for the JAP.VN. engine. | ||
| View original record | INDUCTION PIPE TESTS ON JAP.VN. 2.7" Crs 1.5" Dia 2" Rad. 2" Dia Indn Pipe used with Stromberg Carb. 'Z' or 'Tee' Pipe for twin Carbs. giving one way gas flow to cylinders. Indn Pipe tested with two… | ||
| 04-page232 | The trial of a twin choke Zenith carburetter on the 20 HP 'Japan' engine. | ||
| View original record | BY. From Hs/ACL. V 5080 Hs/ACL.2/MJ.30.1.30. TWIN CHOKE CARBURETTERS ON 20 HP. Y5080 Y1053 After the success of the Solex carburetter on Phantom ll we are anxious to try the effect of a twin choke… | ||
| 04-page233 | Suggested programme for 20 HP twin carburetter tests. | ||
| View original record | CHP. From HS/ACL. Y5080 Hs/ACL.2/W.24.4.30. SUGGESTED PROGRAMME FOR 20 HP. TWIN CARBURETTER TESTS. Y5080 X1053 (1) Power curve with Std. engine. That is, 2 1/2 to 1 compression ratio, 110° Camshaft,… | ||
| 04-page234 | Carburetter design choices for 6-cylinder engines and the Phantom II. | ||
| View original record | X5080 E. Hs. ) FROM R. By. ) (At Le Canadel) R2/M.5.30. C. Sg. Wor. Da. X.70a) X.S080. CAR WORK - CARBURETTERS. From Hs/AJL's work we shall probably have twin carburetters for 6 cyl. engines, and for… | ||
| 04-page235 | Twin carburettor tests and camshaft comparisons for the 'Japan' engine. | ||
| View original record | COPY. To R. From H8/ACL. c. to Ss. Wor. c. to Rs. E. c. to D1. By. V5080 Hs/ACL.1/WJ.23.5.30. X.5080 X.1053 X.5090 X.5070 Y5130 TWIN CARBURETTER TESTS & CAMSHAFT COMPARISONS ON 'JAPAN' ENGINE. We have… | ||
| 04-page236 | Engine tests comparing different riser pipe and choke sizes for power output and efficiency. | ||
| View original record | -2- tests it was an advantage to keep the riser pipes as short as possible both with regard to power output and quick engine response to throttle opening. The hot spot was formed by a patch round the… | ||
| 04-page237 | Engine testing, comparing performance with different camshaft durations and carburetter configurations. | ||
| View original record | -3- Hs/ACL.1/ML.23.5.30.Contd. at low R.P.M. full throttle. We found we could open up the brake to maximum R.P.M. and the engine would speed up without the slightest unevenness. With the Std. six port… | ||
| 04-page238 | Summary of engine experiment results on 'Japan' concerning carburettors, camshafts, and induction systems. | ||
| View original record | -4- Hs/ACL.1/WJ.23.5.30. Contd. and 112° long duration camshaft. The results of our experiments on "Japan" can be summarised as follows :- (1) Twin carburetters give a very definite gain in power over… | ||
| 04-page239 | Table of actual valve timing data taken on an engine with a .020 Tappet Clearance. | ||
| View original record | ACTUAL VALVE TIMING TAKEN ON ENGINE WITH .020 TAPPET CLE CAMSHAFT | 116° | 112° | 115° In. Opens | 1½° A.T.C. | 7° A.T.C. | 16° A.T.C. In. Closes | 47° A.B.C. | 43° A.B.C. | 37° A.B.C. Ex. Opens | 42°… | ||
| 04-page240 | Performance graph comparing large and small bore induction manifolds on a 'Japan' engine with twin Zenith carburettors. | ||
| View original record | TWIN ZENITH CARBS ON "JAPAN" COMPARISON OF LARGE & SMALL BORE INDUCTION MANIFOLD. 26 M/M CHOKES IN CARB. 6.25/1 COMPn RATIO. 116° CAMSHAFT OPEN EXHAUST SMALL BORE PIPE * LARGE BORE PIPE + B.H.P.… | ||
| 04-page241 | Performance graph comparing different camshaft configurations on the 'Japan' engine model. | ||
| View original record | CAMSHAFT COMPARISONS ON "JAPAN" TWIN ZENITH CARBS - 26 M/M CHOKES. SMALL INDN PIPE (1.25" INT. DIA) 5.25/1 COMPn RATIO OPEN EXHAUST V 868. B.H.P. (CORRECTED TO 760 M/M) R.P.M. B.H.P. F.M.E.P. 112°… | ||
| 04-page242 | Performance graph comparing a Twin Zenith carburettor against a standard chassis carburettor with different camshafts. | ||
| View original record | TWIN ZENITH CARBURETTER ON 'JAPAN' COMPARISON WITH STD CHASSIS CARBURETTER. ZENITH USED WITH 26 m/m CHOKES - SMALL BORE HOT PIPE - 112° & 116° CAMSHAFTS - 5.25/1 COMPn RATIO. OPEN EXHAUST. V869 B.H.P.… | ||
| 04-page243 | Blueprint for the arrangement of twin Zenith carburettors and induction pipes on a Japan engine. | ||
| View original record | V870 INLET TO TOP SPOT 1.250 INSIDE DIA. 1.400 DIA TURBINE BOSS OUTLET FROM HOT SPOT PIPES TAPER FROM / 1.250 DIA TO 1.400 DIA / TO MATCH CARB THROTTLES 3.125 2.625 ARRANGEMENT OF TWIN ZENITH CARB ON… | ||
| 04-page244 | Report comparing the road test performance of Twin Zenith and Solex carburetters on different engines. | ||
| View original record | To H. From HA/ACL. c. to Ed. Mor. c. to L. DA. c. to RY. TWIN CHOKE CAR CARBURETTERS. We have carried out a few road tests on the Twin Zenith carburetter on a 'Japan' engine but although we have not… | ||
| 04-page245 | Carburettor design, comparing emulsion type diffusers with plain tube jets and the need for an acceleration pump. | ||
| View original record | -2- HS/A.L./L.LL.S.R.S.Contd. size than the model Solex we are sending you. The induction branches we think should be the same size as the inlet ports or only a little smaller. We could build up one… | ||
| 04-page246 | Carburetor testing, comparing Zenith and Stromberg models and discussing road test results on a Phantom. | ||
| View original record | -3- HS/ACL.1/BLL.6.32.Contd. Zenith 140 miles was done with the accelerating pump and 140 without and a careful check made of the fuel consumption. No difference could be detected in either case. We… | ||
| 04-page247 | Diagrammatic sketch of a Stutz-Zenith carburettor. | ||
| View original record | V184 IDLING DISCHARGE HOLE AIR NOZZLE IDLING AIR ADJUSTMENT IDLING JET FLOAT FULCRUM PIN FLOAT NEEDLE VALVE BY-PASS COMPENSATOR PETROL FILTER DOUBLE THROTTLE VALVE PRIMARY VENTURI ACCELERATING JET… | ||
| 04-page248 | Visit to WV, a 25HP chassis, and design progress on the Phantom II induction system and petrol pump. | ||
| View original record | X5080 Hs. from E. C. Se. WOP. ES/ms.9.7.30. X.1698 X.5080 X.2677 RE. VISIT TO WV. NEXT WEEK. In connection with the above R, would like you to bring down a 25 HP. chassis fitted with the twin… | ||
| 04-page249 | Increasing petrol consumption, suggesting bench tests to investigate carburation issues. | ||
| View original record | X5080 Hs. from R. C. Sg. RV. RS/10.7.30. K.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… | ||
| 04-page250 | Test drive report on a 25 HP car with a double Zenith carburetter. | ||
| View original record | X5080 Sc. From R. C. Mot. Hs. Ev. R7/10 9.7.30. X.5080 X.1053 25 HP. CAR WITH DOUBLE ZENITH CARBURETTER. I drove this car for some miles and was very impressed with the carburetter, which appeared to… | ||
| 04-page251 | Whether increased acceleration on a Phantom II car was due to a drilled air-valve or advanced ignition timing. | ||
| View original record | COPY. R. From PN. c. to Sg. BY. Hs. X7080 P.N.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… | ||
| 04-page252 | Brake thumping and carburation issues for a 25 HP car (Japan model). | ||
| View original record | HS. BY. } FROM R. RL/M20.8.30. X5080 C. to SG. MOR. C. to DA. E. 25 HP. CAR (JAPAN). X.5770. X.5080. X.5000. BRAKES. During the holidays I drove the 25HP. car (Japan) about 700 miles. In that time the… | ||
| 04-page253 | High engine oil consumption and potential remedies, including increasing the oil reserve. | ||
| View original record | (2) ENGINE OIL CONSUMPTION. This was rather heavy, and coupled with the fact that the engine does not carry much oil in the crankchamber some-thing should be done to increase the reserve of oil so… | ||
| 04-page254 | Brake issues, crankchamber modifications, and testing for the 25 HP model for Japan. | ||
| View original record | COPY. Y8080. To Hs. From Sg. re. 25 HP. Japan. Sg26/21.9.30. X.5770. X.5360. X.5420. X.5080. X.5000. X.986. I have just seen R1/M20.8.30. Would you kindly send me a copy of your reply in regard to the… | ||
| 04-page255 | 25 HP car in Japan, addressing a brake failure and an experiment with extra oil. | ||
| View original record | COPY. X5080. To Sg. From Hs. Hs.1/MJ.8.9.30. 25 HP. JAPAN. X.5770. X.5080. X.5360. X.8000. X.5420. X.986. Replying to Sg26/21.9.30. We have sent you a copy of our He/Rn.8/MJ.5.9.30., which replies to… | ||
| 04-page256 | Requesting the development of an air silencer for the 20/25 HP carburetter. | ||
| View original record | x5080 By. from Hs/AJL. Hs/AJLL/AD25.10.30. CARBURETTER AIR SILENCER 20/25 HP. We are anxious to develop quickly an air silenced carburetter for the 20/25 HP. car on the same lines as that recently… | ||
| 04-page257 | Thermostat temperature settings, carburation imperfections, and twin carburetors for 25HP and 45HP cars. | ||
| View original record | HS. FROM R. R4/181.12.30. C. to SG. WOR. C. to HY. PN. CAR WORK - 25HP. AND 45HP. THERMOSTATICALLY CONTROLLED SHUTTERS. X.3499. X.7080. X.5080. X5080 The figures shew that in hard running there will… | ||
| 04-page258 | Carburettor noise on the Phantom II and a proposal to use the crankcase as a silencer. | ||
| View original record | To R. From Hs/Rm. c. to ES. Wor. c. to Og. H. c. to Hy. Handwritten: X5080 Hs/Rm.l/J, 20.12.30. X.7080. X.5080. CARBURETTOR NOISES. We now have the twin carburettors running. Naturally, in view of… | ||