Rolls-Royce Archives
| Identifier | Entry | ||
| 04-page001 | Requesting the experimental production of straight-tooth constant mesh gears for the Goshawk II gearbox. | ||
| View original record | X4424 [Stamp: RECEIVED 29 OCT 1921 R.R.Co.LTD E.P.C.] Mr Coverley from BY/C. c. ad. c. EPC. c. Mr Broome. c. Mr Iacson. BY/C3/P28.10.21. GOSHAWK II. CHANGE GEARBOX. SPECIAL GEARBOX GEARS. X.4424. It… | ||
| 04-page002 | The Goshawk II footboards, specifying the metalwork for the Change Gear Mechanism should be in two pieces. | ||
| View original record | VW.251 Exp. Dept. From HY. BYLY-M27.4.22. [Stamp: RECEIVED APR 27 1922] HS GOSHAWK II. FOOTBOARDS. With reference to the metal work round the Change Gear Mechanism, which is fixed to the footboards,… | ||
| 04-page003 | Delivery of 20HP chassis fitted with coarse pitch bevel gears, conditional upon the completion of a 10,000-mile trial. | ||
| View original record | K4424 XP. Hs. BY7-P3.5.23. 20HP. CHASSIS. COARSE PITCH BEVEL GEARS. Referring to the question of delivery of chassis which have been fitted with 5 D.P. gears, I wrote BJ, & CJ, on this question… | ||
| 04-page004 | The standardization and release of chassis fitted with 20-HP, 11x50 axles. | ||
| View original record | Y4424 BJ c. to Hs. c. to C. c. to. Sg. EP4/H4.6.23. re 20-HP. AXLES. With reference to your memo BJ4/H4.6.23. We have in every case of chassis sent to London and district, i.e. those which come under… | ||
| 04-page005 | Urgent internal memo regarding the standardisation of 11 x 50 axles for 20-HP Chassis. | ||
| View original record | 4424 Hs. c. to BM. c. to Wor. EP/Thn2/H4.6.23. re. STANDARDISATION OF 11 x 50 AXLES. The following is a telephone message received from CJ. this morning:- "20-HP Chassis are arriving with 11 x 50… | ||
| 04-page006 | Urgent memo regarding the testing and release of new 20 HP axles, with a request to ship two chassis to Australia. | ||
| View original record | To BP. from BJ. Copies to: Hs. X4424 BJ4/H4.6.23. VERY URGENT. 20 H.P. AXLES. Some 20 h.p. chassis have arrived here with 11/50 axles. We understand these are new type axles made in a similar manner… | ||
| 04-page007 | Standardisation of coarser pitch rear axle gears to enable quieter axle production. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. Description of Parts. COARSER PITCH REAR AXLE GEARS. Origin. To enable quiet axles to be produced more easily. Experimental Test Report. The ratios have been altered… | ||
| 04-page008 | Cost savings on the 20 HP chassis by standardising coarser pitch rear axle gears. | ||
| View original record | To Rs. from My/JW. C O P Y. RE. STANDARDISATION SHEET X.4244. COARSER PITCH REAR AXLE GEARS - 20 HP. CHASSIS. We return herewith above-noted standardisation sheet from which it will be seen we… | ||
| 04-page009 | Design completion of a 4-speed side lever servo drive and gearbox for the Goshawk project. | ||
| View original record | To Hs. from R. c. to CJ. NJ. BY. E. DA. RG. X5340 R2/M27.6.24. RE GOSHAWK. x5370 X.5340. X.5060 X.4219. X.8016. X.4247. The 4 speed side lever servo drive and gearbox design is now nearing completion.… | ||
| 04-page010 | Technical memorandum describing the features and mechanics of the Goshawk III 4-speed gearbox with servo. | ||
| View original record | To BY. From A.J.Stent. c. to R. CJ. HS. K.4550 S310 STM/6.7.24. GOSHAWK III. 4-SPEED BOX WITH SERVO. K.4550 Y5510 We send herewith drawing of the above - LsC.1697 showing the internal mechanism. This… | ||
| 04-page011 | Dimensional changes to gearbox components for clearance. | ||
| View original record | contd :- -2- We wish to point out that the centres of all the sliders and their guides have been pushed outward from the dimension scaling on the drawing by an amount of .075" to give more clearance… | ||
| 04-page012 | Manufacturing process and design modifications for the Goshawk III four-speed gearbox striking fork. | ||
| View original record | X.4650 Y5310 To EY. From A.J. Stent. c.c. to CJ. R. HS. ST1/M23.7.24. GOSHAWK III. FOUR SPEED BOX - 1st. & 2nd. STRIKING FORK. Y5310 X.4650 We send you herewith drawing Lec.1903., shewing the above,… | ||
| 04-page013 | Construction and modifications of the Goshawk III 4-speed gearbox casing. | ||
| View original record | X.4650 X5810 To BY. from A.J. Stent. c.c. to CJ. R. HS. ST1/M24.7.24. GOSHAWK 111. 4 SPEED GEAR-BOX CASING. X.4650 X5810 We send herewith Lec.1906 the main drawing of the above. You will note that we… | ||
| 04-page014 | Drawing Lec.1913 for the Goshawk III four-speed gearbox, focusing on the casing and declutching gear. | ||
| View original record | To HY. from AJS. c. to CJ. c. to Hs. X 5310 AJS1/M27.8.24. GOSHAWK III. FOUR SPEED GEARBOX. X.4680X SD 20 X.5310. We send herewith drawing No. Lec.1913., shewing particulars of the casing, declutching… | ||
| 04-page015 | Points requiring attention for the 4-Speed Goshawk Gearbox model. | ||
| View original record | To BY. } FROM AJS. HS. } c. to R. c. to CJ. X5310 AJS1/M3.12.24. RE. 4-SPEED SIDE CHANGE SERVO X.5770 DRIVE GOSHAWK GEARBOX. X.5310 X.5370 The following are a few points requiring attention on the… | ||
| 04-page016 | List of engineering notes and required modifications for various mechanical components. | ||
| View original record | contd :- -2- (4) PEDULUM LEVER. We note the horns for operating interlock are of different heights. We cannot sanction this even to facilitate machining, and consider that they should be improved by… | ||
| 04-page017 | Design note regarding a square-edged chamfered bore to clean foreign matter from a shaft. | ||
| View original record | contd :- -3- The intention is that the more or less square edge at the forward end of the chamfered bore should clean from the shaft particles of foreign matter when the sleeve is slid upon it, and so… | ||
| 04-page018 | Improvements to the Goshawk model, including a 4-speed gearbox, front brakes, and a strengthened crankshaft. | ||
| View original record | To C.J. from R. c. to BJ. HS. c. to PN. BY. c. to E. DA. X5310 GOSHAWK 4. R3/M8.12.24. X.5310 X.5770 This is the improved Goshawk with 4-speeds and side levers, the box of which has just been… | ||
| 04-page019 | Modifications and feedback on the Goshawk 4-speed gearbox. | ||
| View original record | To HS. BY. from R. c. to CJ. BJ. √5310 R3/M10.12.24. GOSHAWK 4-SPEED BOX. X.4247 X.5310 X.5770 We have seen this on a car at WW. and think it will prove quite good. A few points require modification… | ||
| 04-page020 | Fitting and performance of a 4-speed gearbox with right-hand change on a 20 HP car. | ||
| View original record | X5310 To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. HY. c. to Wor. Hs5/LG11.12.24. 4-SPEED BOX WITH RIGHT-HAND CHANGE T4247 FOR 20 HP. We have one of these boxes fitted on a 20 HP. car. The box… | ||
| 04-page021 | Graph plotting road speed against engine RPM for the Goshawk II & III gearboxes. | ||
| View original record | GOSHAWK II & III GEAR RATIOS ROAD SPEED FOR ENGINE R.P.M. LEGEND: SOLID LINE: GOSHAWK III 4 SPEED BOX DOTTED LINE: GOSHAWK II 3 SPEED BOX THESE CURVES ARE FOR 11/50 AXLE RATIO AND THE FOLLOWING GEAR… | ||
| 04-page022 | Recommendation for car 7-G-11 with a 4-speed gearbox to be used at WW until front wheel brakes are completed. | ||
| View original record | To CJ. BJ. } FROM R. HS. BY. X5310 R5/M13.12.24. CAR FOR WW. X.4247 X.5310 X.5770. We think 7-G-11 with the 4-speed gearbox will be the best car to have at WW. for the present, until the front wheel… | ||
| 04-page023 | Testing of a Goshawk 3 three-speed gearbox with a servo mechanism. | ||
| View original record | X5370 To Hs. from R. SECRET. RL/M7.1.25. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to AJS. GOSHAWK 3. THREE SPEED X.5770 GEARBOX WITH SERVO. X.5310 X.5370 Mr. Stent points out that this servo… | ||
| 04-page024 | Two arrangement options for the Goshawk three-speed gearbox with a central change and servo. | ||
| View original record | To AJS. } FROM R. To E. } c. to CJ. BJ. c. to DA. BY. c. to HS. 15310 R4/100.1.24. GOSHAWK THREE SPEED GEARBOX. X.5310 CENTRAL CHANGE WITH SERVO. X.5770 X.5370 Re. Mr. Stent's memo. I had looked at… | ||
| 04-page025 | Cancellation of a new three-speed gearbox for the 20 HP chassis and the revised production plan. | ||
| View original record | Y5310 ~~Mr. Platforth~~ ~~Mr. Hall~~ RHC. --------- BYS/H. 16. 1. 25. 20 HP. CHASSIS. NEW THREE SPEED BOX. Will you kindly note that the new three speed box which has been instructed experimentally,… | ||
| 04-page026 | Secret memo suggesting thorough testing of the reverse shaft and gear on the Goshawk 3 four-speed box. | ||
| View original record | To Hs. from AJS. c. to R. X.5310 S E C R E T. AJS1/M.9.1.25. GOSHAWK 3 - FOUR SPEED BOX. As this box is to be brought into production immediately we suggest that the reverse shaft and gear be… | ||
| 04-page027 | Dynamometer testing of a 4-speed gearbox for 20 HP cars, detailing gear engagement issues and subsequent modifications. | ||
| View original record | X5310 To R: from Hs. c.c. to CJ. BJ. c.c. to RG. K. c.c. to BA. AJS. c.c. to BY. Wor. Hs6/LG20.1.25. 4-SPEED BOX FOR 20 HP. CARS. X5310 We have been carrying out tests on the road wheel dynamometer… | ||
| 04-page028 | Road wheel dynamometer testing of a gearbox, detailing component wear and damage after running. | ||
| View original record | contd :- -2- The car was run on the road wheel dynamometer for half an hour on 3rd. gear. half an hour on 2nd. gear. half an hour on 1st. gear, and half an hour on reverse - at maximum torque, 1000… | ||
| 04-page029 | Report page detailing measures to diagnose shaft deflection and gear meshing issues. | ||
| View original record | contd :- -3- pointers coming to the outside of the box which we hope to measure where the shafts are deflecting or what tendency there is for the gears to work out of mesh. We have wired to WW.… | ||
| 04-page030 | Failures in the Four Speed Box for the 20 HP Chassis, attributing the cause to a design issue. | ||
| View original record | Y5310 C.Hs. BY8/H. 21. 1. 25. FOUR SPEED BOX. 20 HP. CHASSIS. We have had two failures with the above box. The failures in question affect the First Speed Pinion and the Reverse Pinion. From an… | ||
| 04-page031 | Telegram received by telephone regarding a gear problem and a proposed solution. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Stamp: RECEIVED GPO JAN 1925 T. Time Received: 11-15. Date: 26-1-25. To: REGENT Derby. By: W&A. from: Lavandou 3-52 on 26th. Message: Trouble with… | ||
| 04-page032 | Telegram received by telephone regarding a fault with sliding gears and a three-speed box. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received Date To By from 2 chamfer here of sliding gears increase boxed it continuing try reverse bushing on stationary shaft stop now three speed… | ||
| 04-page033 | Form for recording a telegram received by telephone. | ||
| View original record | RR 1803 (10,000) (40-3-41) GP 1/227 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received Date To By from 3 by post FROM THIS SHEET MUST BE FILED. | ||
| 04-page034 | Graph of road speed against engine RPM for the Goshawk II & III gear ratios. | ||
| View original record | GOSHAWK II & III GEAR RATIOS. ROAD SPEED FOR ENGINE R.P.M. ______ GOSHAWK III 4 SPEED BOX. _ _ _ _ _ GOSHAWK II 3 SPEED BOX. THESE CURVES ARE FOR 11/50 AXLE RATIO. AND THE FOLLOWING, GEAR BOX RATIOS:-… | ||
| 04-page035 | Further tests and modifications to a 'USA' 4-speed gearbox due to overheating issues. | ||
| View original record | D.R. 497A (500) (O.R. 172 25-9-26) J.H.B. EXPERIMENTAL REPORT. Expl. No. X5310 REF. HS1/LG27.1.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. AJS. c. to BY. Wor. S E C R E T. TESTS ON 'USA'… | ||
| 04-page036 | Gearbox performance and durability tests, comparing 4-speed and 3-speed boxes. | ||
| View original record | S.H. 403A. (500) (D.B. 173 20-9-24) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF. Hs1/LG27.1.25. With these modifications we have run the gearbox for 15 mins. full power maximum torque on reverse, 30… | ||
| 04-page037 | Tests conducted on a 'USA' 4-speed gearbox to confirm the reliability of modifications. | ||
| View original record | E.B. 400. (500) M.B. 173 25-9-24) J.B.D. K5310 EXPERIMENTAL REPORT. Expl. No. REF: HS7/LG28.1.25. To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to RG. AJS. c. to BY. Wor. S E C R E T. 'USA' 4-SPEED… | ||
| 04-page038 | Tests conducted on a 'USA' 4-speed gearbox, focusing on modifications to the reverse gear. | ||
| View original record | EXPERIMENTAL REPORT Exptl. No. REF: HS4/LG29.1.25. S E C R E T. 'USA' 4-SPEED GEARBOX. To R. From Hs. c. to CJ. BJ. c. to RG. E. c. to DM. AJS. c. to SY. Wor. We carried out a test using the original… | ||
| 04-page039 | Design issues and suggested solutions for a 4-speed gearbox. | ||
| View original record | X.5310 AJS. Hs.) E. DA.} FROM R. RG. TO c. to CJ. BJ. BY. SECRET. R4/M29.1.25. U. S. A. 4-SPEED BOX. X.5310 Trouble with gearbox is surprising. I telegraphed Derby some of my views. I do not take the… | ||
| 04-page040 | Potential faults and cures for a gearbox, referencing pinions, reverse gear, and a new three-speed box design. | ||
| View original record | -2- prove by making two pinions, one with keys only under the second, and another with keys only under the first. The reverse might be cured by stopping the roll at the small gear end by converting… | ||
| 04-page041 | Wire confirmation requesting test results for a four-speed gearbox with an old type reverse shaft and modified fork. | ||
| View original record | CONFIRMATION OF WIRE. X5310 WEST WITTERING. 29. 1. 23. HIVES. ROYCAR. DERBY. FOUR SPEED GEARBOX PLEASE WIRE RESULT OF TEST WITH OLD TYPE REVERSE SHAFT AND MODIFIED FORK. ELLIOTT. | ||
| 04-page042 | Testing a 'USA' 4-speed gearbox, detailing issues with the reverse and first gears. | ||
| View original record | R.R. 4824 (New) (D.B. 171 25-9-24) J.H.D. EXPERIMENTAL REPORT Expt. No. X5310 REF. H84/LG30.1.25. To R. From Hs. c. to CJ. BJ. c. to RG. E. c. to DA. AJS. c. to BY. Wor. S E C R E T. 'USA' 4-SPEED… | ||
| 04-page043 | Secret memo detailing experimental improvements to a gearbox, including the reverse shaft, pinion sleeve, and striking forks. | ||
| View original record | X.5310 To BY. from AJS. S E C R E T. AJS2/M30.1.25. c. to CJ. R. Hs. U. S. A. GEARBOX. We send herewith Lec.1991 (original to BY. and print to R.) shewing improvements to this box, as dictated by… | ||
| 04-page044 | Defects and potential improvements for a 4-speed gearbox. | ||
| View original record | x.5310 S E C R E T R2/M2.2.25. To AJS. from R. c. to E. DA. c. to RG. HS. BY. U. S. A. 4-SPEED BOX. X.5310 The defects on this were surprising. I am expecting to hear a word of how it was made better… | ||
| 04-page045 | Secret memo discussing issues and improvements for a relay advance and a four-speed gearbox. | ||
| View original record | To E. DA. AJS. from R. SECRET. R1/M3.2.25. c. to CJ. BJ. Wor. c. to EB. He. BY. E. A. C. U. S. A. X.8555 X.5310 RE. RELAY ADVANCE, AND FOUR SPEED BOX. Below you will see copy of telegram sent to Derby… | ||
| 04-page046 | Modifications to pinions and shafts for improved silence and production. | ||
| View original record | contd :- -2- with others of our and other makes. You will find good timing by plungers or a certain free movement and ample clearances. The bigger pinions suggested by me may be better and any… | ||
| 04-page047 | Modifications to a 4-speed gearbox, including a detachable change speed lever and a simplified manufacturing process. | ||
| View original record | X.5310 To BY. from AJS. S E C R E T. AJS1/43.2.25. c. to CJ. R. HS. U. S. A. 4-SPEED BOX. X.5310 We send herewith LeC.1992 (original to BY. print to R.) shewing :- (1) Detachable change speed lever as… | ||
| 04-page048 | Cause and potential cure for gears creeping in a 4-speed gearbox. | ||
| View original record | To E., AJS., HS. FROM R. c. to CJ., BJ., BY. c. to RG., DA. SECRET U.S.A. X.5310 R2/MS.2.25. 4-SPEED GEARBOX. X.5310 Since writing my memo. of yesterday Mr. Elliott's letter has come to hand. I am… | ||
| 04-page049 | Technical analysis discussing epicyclic creep and potential modifications to forks, shafts, and pinions. | ||
| View original record | -2- epicyclic creep, but here again either we have not cured it or the fork was the cause. An idea has occurred to me that with the larger shaft (which is a definite improvement) we might try a taper… | ||
| 04-page050 | Secret memorandum detailing instructions and theory for modifying a 4-speed gearbox. | ||
| View original record | X.5310 To R. from AJS. c. to CJ. BY. HS. S E C R E T. AJS1/M4.2.25. U. S. A. 4-SPEED GEARBOX. X.5310 Up to the present we have forwarded what we consider the minimum of instructions necessary for… | ||
| 04-page051 | Issues with the 1st and 2nd speed gears working out on a USA8 4-speed gearbox. | ||
| View original record | S.R. 492A. (50c) (D.E. 17) 23-9-24) J.H.D. EXPERIMENTAL REPORT. X5310 Exptl. No. 5310 REF. Hs2/LG4. 2. 25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. AJS. c. to SY. Wor. S E C R E T. 'USA8… | ||
| 04-page052 | Telegram regarding a potential issue with a reverse wheel, shaft and bearings causing jittering. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. X 5310 Handwritten (top left): No Exam / B/J W.W. Huckle Time Received: 12-59 Date: 5-2-26 To: Royce N Derby By: WSA from: Lavandou 5th 10-15 Probably… | ||
| 04-page053 | Secret memo discussing the causes of 'creep' in the reverse shaft of a 4-speed gearbox for 'India'. | ||
| View original record | X. 5310 To AJS. Hs. } FROM R. c. to CJ. BJ. Wor. c. to RG. DA. BY. SECRET R1/MS.2.25. INDIA. 4-SPEED BOX. X.5310 I have received Hs. report that the reverse shaft with stepped dimensions caused the… | ||
| 04-page054 | Solutions to pinion gear creeping, slack, and binding issues. | ||
| View original record | -2- Also I must withdraw my inference that Mr. Hives wedging caused collar friction, but that it was the result of creeping against forks which were purposely made immovable. We must thank Mr. Hives… | ||
| 04-page055 | Secret memo outlining experiments for a 4-speed gearbox, focusing on pinions and a splined shaft. | ||
| View original record | X5310 TO. FROM AJS. SECRET. AJS1/148.2.25. copy to HH. MS. INDIA. 4 SPEED BOX. We send herewith Led. 1997. (original to HY., and a print to R.) which shows:- (1) Two methods of making the 1st. and… | ||
| 04-page056 | Up-to-date suggestions for a 4-speed gearbox. | ||
| View original record | Mr. H. Hives A.J.S. SECRET Copy to Mr. H.I.H. Copy to Mr. H.S. Copy to Mr. -- INDIA. 4 SPEED BOX. (5310) AJS/14.2.25. Referring to your memo. of 9/2/25 dealing with further suggestions for the above… | ||
| 04-page057 | Drawing for a plain bearing reverse shaft, detailing lubrication modifications and material considerations. | ||
| View original record | X5310 TO-DAY. FROM AJS. S E C R E T. AJS/MR.2.25. Copy to [REDACTED] I N D I A. 4 SPEED BOX. We send herewith Leo. 1996., showing a plain bearing reverse shaft with integral pinions for the above box.… | ||
| 04-page058 | Experiment on a plain bearing reverse shaft for a 4-speed gearbox, comparing whitemetal and bronze bearings. | ||
| View original record | X5810 TO R.R. FROM AJS. SECRET. AJS/1402.2.35. COPY to GM. COPY to YNS. INDIA. 4 SPEED BOX. PLAIN BEARING REVERSE SHAFT EXPERIMENT. The print of Lec. 1998. attached hereto shews a scheme of above… | ||
| 04-page059 | The Goshawk II & III chassis gear ratios. | ||
| View original record | X5310 12.2.28. GOSHAWK II & III CHASSIS GEAR RATIOS, ETC. The two back axle ratios are now :- 11/50 12/50. giving ratios of :- 1: 4.545 1: 4.167 Taking the low back axle ratio, namely, 1 : 4.545, the… | ||
| 04-page060 | Design of a 4-speed gearbox, specifically a torsionally free double pinion system. | ||
| View original record | X. 5310 To AJS. HS. FROM R. S E C R E T. R4/M13.3.25. c. to CJ. RG. E. I N D I A. c. to DA. Mr. Claremont. 4-SPEED BOX - TORSIONALLY FREE DOUBLE PINION ETC. Referring to the failure of the scheme of… | ||
| 04-page061 | Solutions for a reverse gear issue in a 4-speed gearbox, including different bearing and gear arrangements. | ||
| View original record | X. 5310 To AJS. E. BY. HS. FROM R. c. to CJ. BJ. RG. c. to DA. Wor. SECRET. INDIA. 4-SPEED BOX. X.5310 RI/103. 2.25. I understand from Hs. memo. of 4.2.25., that there is now no trouble with the… | ||
| 04-page062 | Modifications to a gearbox to address issues with torque bind and gear selection. | ||
| View original record | -2- Keys narrowed so that torque bind must be only under gear which is driving. SEE ORIGINAL FOR SKETCH. If this does not cure second speed(using a fork which is free and amply slack cut away… | ||
| 04-page063 | Secret report on the Goshank III - India 4-speed gearbox test. | ||
| View original record | TO R.H. from A.J.B. c. to Hs. S E C R E T. GOSHANK III - INDIA - 4 SPEED GEAR BOX. At 8.30 last night we wired H. as follows:- "HAVE CONCLUDED ONE HOUR TEST EACH ON FIRST "AND SECOND SPEED OF INDIA… | ||
| 04-page064 | The full torque testing of a parallel reverse shaft, detailing observations on gear meshing and performance. | ||
| View original record | -2- AJS1/DB.17.3.35.Contd. excellent condition. Owing to the removal of the plunger springs, and there being a good clearance for the lever in the gate, we find that the gears were pushed past their… | ||
| 04-page065 | Experiment thinning down splines for the first and second speed pinion, with a production suggestion. | ||
| View original record | -3- AJS1/DB.17.2.35.Contd. The thinning down of the splines for the first and second speed experiment was carried out with consider-able care to make certain that there was no possible touching of the… | ||
| 04-page066 | Secret memorandum proposing modifications and further testing on the splines of a 4-speed gearbox for India. | ||
| View original record | S.T.C. No. from AJS. c. to [illegible] c. to [illegible] c. to Hs. c. to OF. D. to [illegible] 45310 S E C R E T. AJS2/DB.17.2.25. INDIA - 4 SPEED GEAR BOX. Further to our memo AJS1/DB.17.2.25, now… | ||
| 04-page067 | Testing of a plain bearing reverse shaft and potential for rattle. | ||
| View original record | -2- AJS2/DB.17.2.25. result with this small amount out of symmetry. This will be run in conjunction with the plain bearing reverse shaft, and will be ready today. A view has been expressed here that… | ||
| 04-page068 | Secret memo detailing the results of two successful tests conducted on a 4-speed gearbox. | ||
| View original record | SECRET. Y5310 To Hs. at Le Canadel. Hs/TMWL/LG17.2.25. From TMW. RE. 4-SPEED GEARBOX. X.4255 We have run off 2 tests since you left :- (1) BY's scheme of a bush under the 1st. speed with the splines… | ||
| 04-page069 | Progress report on foot brake improvements for the 7-0-11 car, noting a reduction in groaning and squeaking. | ||
| View original record | contd :- -2- Mr. Stent has sent a report by express air mail to R. about test No.2., signed and sealed by RHC. and myself so you will know all about this before you get my note. FOOT BRAKES ON 7-0-11… | ||
| 04-page070 | Secret internal memorandum detailing the results of tests on an India - 4 speed gearbox. | ||
| View original record | Memo: from AJB. 15310 c. to C.J. c. to S.R. c. to Hs. c. to H.T. c. to T.H.S. SECRET. INDIA - 4 SPEED GEAR BOX. At 12.15 last night we sent R. the following telegram:- "GEAR CAME OUT WITH CONSIDERABLE… | ||
| 04-page071 | Tests on a reverse shaft, comparing results with and without plunger springs and using different forks. | ||
| View original record | reverse shaft on test again, with the idea of confirming the success Mr Hives had had with this, and we found that by leaving out the plunger springs and using our force measuring apparatus, that we… | ||
| 04-page072 | Technical memorandum discussing gearbox shaft experiments, including a sketch of a proposed reverse shaft. | ||
| View original record | -3- AJSL/DB.19.2.25.Contd. experiment again (at a convenient time between others), with the well cleared away forks, so as to be able to tell you whether there is then any end force registered with… | ||
| 04-page073 | Wired message suggesting a logical cure for reverse by using specific bearing and bushing arrangements. | ||
| View original record | -4- AJS1/DB.19.3.26. Contd. We have just wired R. as follows:- "WE SUGGEST LOGICAL CURE FOR REVERSE BY USING "PARALLEL BALL BEARING SHAFT WITH OUTER SLEEVE TAKING "ANGULAR BEARING UNDER TEETH AT REAR… | ||
| 04-page074 | Secret internal memo responding to a telegram about torsionally free pinions for an India 4-speed gearbox. | ||
| View original record | To H. from AJS. m. to DH. c.c. to EH. c. to HS. c. to Cor. c. to WH. V5310 AJS1/DB.20.2.25. SECRET. INDIA - 4 SPEED GEAR BOX. We have just received your telegram asking for the torsionally free… | ||
| 04-page075 | Rough drawing and experiment for torsionally free pinions on a 4-speed gearbox for India. | ||
| View original record | To W. from AJS. c. to C.I. c. to HY. c. to HS. c. to HOY. c. to RMC. Y5310 AJS1/DB.21.2.25. SECRET. INDIA - 4 SPEED GEAR BOX. We attach to R's copy of this memo a print of a rough drawing, which is… | ||
| 04-page076 | Secret memo detailing the first test of a reverse torsionally free pinion in an India 4-speed gearbox. | ||
| View original record | To Mr. [obscured] from AJS. c.c. to [obscured] c.c. to SY. c. to HS. c.c. to [obscured] c.c. to [obscured] Y5310 SECRET. AJS1/IB.23.2.25. INDIA - 4 SPEED GEAR BOX. We wired R. last night about 12.30,… | ||
| 04-page077 | Gearbox testing detailing issues with gear meshing, component damage, and proposed design modifications. | ||
| View original record | -2- AJS1/DB.23.2.25. Contd. 1.Contd. driven from the erecting to the Test Dept: On dismantling it was found that the amount of out of mesh of the gears coincided with the amount of angle through which… | ||
| 04-page078 | Secret test report on an India 4-speed gearbox, detailing the results of the second test on torsionally free reverse pinions. | ||
| View original record | Copy from AJS. Original c.c. to Mr. H.S. c. to Mr. Hives c. to Mr. Rowledge Y5310 AJS4/DB.23.3.26. S E C R E T. INDIA - 4 SPEED GEAR BOX. We wired R. this afternoon as follows:- "SECOND TEST ALL… | ||
| 04-page079 | Suggestion for facilitating gear assembly by drilling alignment holes and using etched marks. | ||
| View original record | -2- AJ84/DB.23.2.35. Contd. considered of any importance, and the Exptl:Dept: are making some new sets of gears with ground teeth, to be on as soon as possible. A feature which has been suggested by… | ||
| 04-page080 | Design modifications for a 4-speed gearbox for India, based on a telegram from Mr. Royce. | ||
| View original record | FROM A.J.B. Copy to SECRET. I N D I A. 4 SPEED GEARBOX. X5310 The following telegram from R. was re-transmitted from Derby to A.J.B.:- "MR. ROYCE TELEGRAPHS AS FOLLOWS:- * JUST RECEIVED NEW BELSIZE… | ||
| 04-page081 | Graph of car speed versus engine RPM for various 20 HP gear box ratios with an 11/50 axle ratio and 31.400 inch effective wheel diameter. | ||
| View original record | FIGURES FOR 11/50 AXLE RATIO & WHEEL DIA OF 31.400 (EFFECTIVE) INDIA AS PER PROPOSAL IN TELEGRAM REFERRED TO IN ACCOMPANYING MEMO R151/M26 2.2.25 INDIA SUGGESTED ALTERNATIVE 2nd SPD BY ADDING ONE… | ||
| 04-page082 | 'INDIA' 4-speed gearbox, detailing an issue where the second speed gear disengages under power. | ||
| View original record | R.R. 492a (500m) (D.D. 17b 25-9-24) J.H.D. EXPERIMENTAL REPORT Exptl. No. V5310 REF HSg/LG27.2.25 To R. from Hs. c. to CJ. BJ. c. to AJS. E. c. to DA. BY. c. to Wor. SECRET. 'INDIA' - 4-SPEED GEARBOX.… | ||
| 04-page083 | 40/50 HP gearbox test, noting issues with gears working themselves out. | ||
| View original record | EXPERIMENTAL REPORT To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Sor. Expl. No. 45310 REF. Hs5/LG28.2.25. S E C R E T. 'INDIA' - GEARBOX. X.5310 In connection with these experiments,… | ||
| 04-page084 | Request to test a car with a complete 4-speed gearbox in London before production. | ||
| View original record | To Hs. from B.J. Copies to Hor. By. X5310 BJ10/H2.3.25. INDIA. 4-SPEED BOX. As soon as you have a car with complete and satisfactory 4-speed box, we shall be glad to try it in London in order to form… | ||
| 04-page085 | Secret memo discussing a recurring fault with the 2nd speed on a 4-speed gearbox for the 'India' model. | ||
| View original record | X.5310 To R. from AJS. c. to CJ. BJ. c. to Hs. E. c. to DA. BY. c. to Wor. SECRET. AJS1/12.3.25. 'INDIA' 4-SPEED BOX. X.5310 Referring to Hs. report (Hs3/LG27.2.25.) that the 2nd. speed still works… | ||
| 04-page086 | Secret memo regarding production and delivery estimates for the 'India' four-speed gearbox and four-wheel brakes. | ||
| View original record | Secret. Refd. Copies. c. Hs. X5310 BYS/H. 3.3.25. 'INDIA' FOUR SPEED BOX. Referring to BJ10/H. 2.3.25. in accordance with CJ's instructions, the material for the box is being machined in parallel with… | ||
| 04-page087 | Secret memo regarding experiments and test results for a 4-speed gearbox. | ||
| View original record | X.5310 To HS. from AJS. c. to R. CJ. BY. S E C R E T. AJS2/M3.3.25. I N D I A. 4-SPEED BOX. X.5310 We received your wire today as follows :- "FIRST TEST WITH TORSIONALLY FREE FIRST AND SECOND GEARS… | ||
| 04-page088 | Secret memo on 4-speed gearbox modifications for India, discussing design changes and patentable features. | ||
| View original record | HS To BY. from RHR. ST. c. to BJ. CJ. E. DA. RG. Mr. Claremont. X. 5310 S E C R E T. R11/M3.3.25. I N D I A. 4-SPEED BOX. We hope this is satisfactorily finished. The modifications are of the simplest… | ||
| 04-page089 | Test drive in London of a 4-speed gearbox fitted to a 20 HP car. | ||
| View original record | (COPY) X5310 SECRET. TO By. from BJ. BJ7/H4.3.25. INDIA. 4-SPEED BOX. I appreciate the position mentioned in BY3/H3.3.25. What we really want to do is to have an opportunity in London of trying a… | ||
| 04-page090 | The dismantling, condition, and testing of the 'India' 4-speed gearbox. | ||
| View original record | R.R. 403A. (New) (D.R. 13) 25-9-24) J.B.D. EXPERIMENTAL REPORT. Expl. No. X5310 REF. HS2/LG4.3.25. To R. from Hs. c. to CJ. BJ. c. to AJS. DA. c. to E. BY. c. to RG. Wor. S E C R E T. 'INDIA' 4-SPEED… | ||
| 04-page091 | Confirmation of a telephone message attaching Authorisation Sheets and actioning the introduction of parts. | ||
| View original record | Secret. CL. [Strikethrough] c. WGR. c. HS. X5310 BY16/H. 5.3.25. In confirmation of telephone message of this afternoon, I attach hereto two copies of Authorisation Sheet, one of which will you kindly… | ||
| 04-page092 | Authorisation to introduce a change into 'INDIA' regarding the first and second speed wheels. | ||
| View original record | Secret. CL[REDACTED]M.R.I. c. Hs. AUTHORISATION TO INTRODUCE A NECESSARY CHANGE INTO 'INDIA' AT ONCE. Nor. He & By. agree it is essential to replace First and Second Speed Wheels at present instructed… | ||
| 04-page093 | Tests conducted on an 'India' 4-speed gearbox. | ||
| View original record | H.R. 493a (New) (D.D. 175 25-9-34) J.H.D. y5310 EXPERIMENTAL REPORT. Exptl. No. REF. Hs1/LG6.3.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. AJS. S E C R E T. 'INDIA' -… | ||
| 04-page094 | Technical memorandum discussing a mystery fault with the second speed of a 4-speed gearbox, suspecting shaft bending and proposing solutions. | ||
| View original record | X. 5310 SECRET. R1/M7.3.25. To BY. HS. } FROM R. AJS. INDIA c. to CJ. BJ. E. c. to DA. RG. 4-SPEED BOX. X.5310 I have telegraphed Derby as follows :- "ROYCAR. DERBY. ALWAYS BEEN MYSTERY ABOUT SECOND… | ||
| 04-page095 | Secret memo regarding the 'India' four-speed gearbox and its incorporation into the 'G' Series chassis. | ||
| View original record | Secret. HS. X5310 BY4/H. 9. 3. 25. "INDIA". FOUR SPEED BOX. X5310 I attach hereto your copy of AJS1/M. I. 3. 25. Since the torsionally free first and second speed pinions are satisfactory in service,… | ||
| 04-page096 | Secret memorandum discussing the redesign of a 2nd motion shaft for a 4-speed gearbox intended for India. | ||
| View original record | TO BY. FROM AJS. SECRET. AJS1/17.3.25. Copy to HS. INDIA. 4 SPEED BOX. We send herewith Lec. 2024. (original to BY., print to R.) 2nd. motion shaft for the above, redesigned in accordance with R's… | ||
| 04-page097 | Tests carried out on the 'India' gearbox. | ||
| View original record | R.R. 493A (5000) (171 23-9-24) J.H.D. EXPERIMENTAL REPORT. /5310 Expl. No. REF HB4/LG1 7.3.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. AJS. c. to BY. Wor. S E C R E T. 'INDIA' GEARBOX.… | ||
| 04-page098 | Gearbox testing, focusing on gear disengagement issues and comparing different gearbox models. | ||
| View original record | R.R. exhs (500) (D.R. 17) 25-9-34) J.H.D. EXPERIMENTAL REPORT -2- Exptl. No. REF Hs4/LG17.3.25. smallest amount of torque being transmitted. The torque is so small that we cannot measure it on the… | ||
| 04-page099 | Test of an 'India' gearbox with 14.5° obliquity gears in an old 40/50 HP car. | ||
| View original record | R.R. 60a (500) (D.B. 17) 21-9-24 J.R.D. X5310 EXPERIMENTAL REPORT. Expt. No. REF. Hs6/LG18.3.25. To R. from Hs. c. to CJ. BJ. c. to RG. AJS. c. to E. DA. c. to BY. Wor. SECRET. 'INDIA' GEARBOX. X5310… | ||
| 04-page100 | AJS's visit to Derby to review experiments on gearbox components. | ||
| View original record | To. [REDACTED] from AJS. c.c. to HS. X5310 AJS1/DB.18.3.25. Re AJS's Visit to Derby. AJS arrived here last Monday night. It was found that some of the experiments had not reached the Experimental… | ||
| 04-page101 | Suggestion for overcoming pinion unmeshing issues in the 'India' four-speed gearbox. | ||
| View original record | Secret. Y5310 AJ81/H. 21.3.25. RE "INDIA" FOUR SPEED GEAR BOX. In connection with the unmeshing of pinions on this box, we would like to make the following suggestion for overcoming this trouble. The… | ||
| 04-page102 | Technical drawing with annotations detailing a design for a splined shaft with helical portions. | ||
| View original record | - 2 - AJ81/H. 21.3.25. -------------- to the helical portions. We suggest that this scheme would be a radical cure. A.J.S. SAY .001 PER INCH. IDEAL SCHEME WITH FLAT CLEARANCE EXAGGERATED ANGLE OF… | ||
| 04-page103 | Authorisation sheet for a modification to the Brake Wheel and Gear on project 'India'. | ||
| View original record | Secret. X5310 Mr. H.C.R. [Struck out] Mr. E.W.H. [Struck out] Mr. A.G.E. [Struck out] Mr. F.H.R. [Struck out] 'INDIA'. AUTHORISATION SHEET NO. 5. I have obtained CJ's consent by telephone to the… | ||
| 04-page104 | Secret memo considering a patent for a cost-saving method of attaching gears in a 4-speed gearbox. | ||
| View original record | [REDACTED] from AJS. [REDACTED] c. to HS. X5310 SECRET. AJS1/DB.30.3.25. INDIA - 4 SPEED GEAR BOX. The method of loosely screwing together the gears to effect torsional freedom to the above box,… | ||
| 04-page105 | Tests conducted on an obsolete 'India' gearbox to diagnose a gear disengagement fault. | ||
| View original record | EXPERIMENTAL REPORT. Expt. No. X5310 REF HS3/LG20.3.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. AJS. c. to BY. Wor. S E C R E T. 'INDIA' GEARBOX. We have taken an obsolete 'India' gearbox… | ||
| 04-page106 | Authorisation sheet No.6 for the 'INDIA' project, regarding covers for the gearbox. | ||
| View original record | X5310 Secret. FWR BY/man HS. HWH BY7/H. 23.3.25. "INDIA". AUTHORISATION SHEET NO.6. It has been agreed by Wor, Hs, and BY. and CJ's consent has been received to the incorporation of two small covers… | ||
| 04-page107 | Authorisation sheet number 6 for 'India', regarding two small covers for the gearbox. | ||
| View original record | Secret. X5310 BYD/H. 25.3.29. 'INDIA'. AUTHORISATION SHEET NO.6. In cleaning up the parts lists for "India", we find that two small covers are required to cover the holes in the gear box through which… | ||
| 04-page108 | Telegram about issues with a 4-speed gearbox and a proposed new drawing. | ||
| View original record | X5310 TO H., FROM A.J.B. SECRET. AJB2/125.3.25. Copy to - R. HS. INDIA. 4 SPEED GEARBOX. We received the following telegram from you this morning:- "TELEGRAM RECEIVED FROM ROYCE AS FOLLOWS:- "REALISED… | ||
| 04-page109 | Tests conducted on the 'INDIA' gearbox to resolve issues with the 1st speed gear. | ||
| View original record | EXPERIMENTAL REPORT. Exptl. No. 15310 REF.HS4/LG30.3.25. To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to RG. AJS. c. to HY. Wor. S E C R E T. 'INDIA' GEARBOX. We have run further tests with the… | ||
| 04-page110 | Gearbox test investigating issues with the first speed gear. | ||
| View original record | R.R. 407a (30m) (D.R. 175 20-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs4/LG30.3.25. We fitted a gearbox with the standard 1st. speed gears to the car and ran that on the dynamometer, and… | ||
| 04-page111 | Delays with the 'India' chassis and testing of front wheel brake parts. | ||
| View original record | R.R. 497A.(20m) (D.B. 172 25-9-24) J.B.D. EXPERIMENTAL REPORT. Expt. No. REF: Hs/L/LGM. S. 25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to BA. Er. c. to Wor. S E C R E T. 'INDIA' CHASSIS. We are… | ||
| 04-page112 | Testing a modification to the 'India' gearbox pinion to prevent it from working out. | ||
| View original record | R.R. 497a (500) (D.B. LTD 23-9-24) J.H.D. EXPERIMENTAL REPORT Expl. No. V5310 REF: Hs5/LG8.4.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Mor. S E C R E T. V5310 'INDIA' GEARBOX.… | ||
| 04-page113 | Suggestions for the plunger location on 1st and 2nd speed sliders for a 4-speed gearbox. | ||
| View original record | X.5310 To BY. from AJS. S E C R E T. AJS1/M17.4.25. c. to CJ. HS. I N D I A. 4-SPEED BOX. X.5310 With reference to As. suggestion of more powerful plunger location of the 1st. and 2nd. speed sliders,… | ||
| 04-page114 | Bumping rig tests for an 'India' front axle, noting a chassis failure and plans for further pivot testing. | ||
| View original record | R.R. 493a (50m) (D.S. 179 23-9-24) J.H.D. X5310 EXPERIMENTAL REPORT. Expl. No. _______ REF: HS3/LG18.4.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. S E C R E T. 'INDIA' FRONT… | ||
| 04-page115 | Design of gearbox sliding pinions, comparing spiral keys to splines with modified driving angles. | ||
| View original record | AJS. } E. } FROM R. Hs. } c. to CJ. RG. c. to DA. BY. X5310 R2/M19.4.25. GEARBOXES. A.5310 X.5310 My telegram of a few days ago required some further comments to make it thoroughly clear. It seems… | ||
| 04-page116 | 2nd speed gear issue in the 'INDIA' gearbox and a proposed modification. | ||
| View original record | R.R. 497A. (Des) (D.B. 125 20-3-24) J.H.D. EXPERIMENTAL REPORT Expt. No. X5310 REF: Hs2/LG22.4.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Wor. SECRET. 'INDIA' GEARBOX. We have… | ||
| 04-page117 | Instruction of experimental shaft splines for 40/50 & India gearboxes. | ||
| View original record | X5310 To BY. from AJS. c. to Hs. SECRET AJ82/M22.4.25. 40/50 & INDIA GEARBOXES. X.5310 Y3426 Referring to our memo. AJ81/M8.4.25., where we asked for splines with a certain face angle relative to the… | ||
| 04-page118 | Secret memo regarding a modification to the splines on the 1st and 2nd speed pinions for the 40/50 & India Gearbox. | ||
| View original record | X5310 To BY. from AJS. S E C R E T. AJS1/M24.4.25. c. to HS. 40/50, & INDIA GEARBOX - X.3426 1ST. & 2ND. SPEED PINIONS. X.5310 With reference to our instructions asking for splines for these with… | ||
| 04-page119 | Depth of a slot and locking spring strength for a four-speed gearbox. | ||
| View original record | Secret. Hs. [crossed out] or hic. Y5310 BY10/H. 30.4.25. FOUR SPEED BOX. Referring to AJS1/W. 17.4.25. there is nothing that I can see that the Experimental require from the Drawing Office to carry… | ||
| 04-page120 | Confirmation of a phone message regarding India gearboxes, advising not to build them until results from modifications are available. | ||
| View original record | SECRET. X5310 CONFIRMATION OF 'PHONE MESSAGE. WEST WITTERING. 5. 5. 25. TO Ed. FROM R. {Copy to Mer.} {Copy to HS.} X5310 REGARDING INDIA GEARBOXES THESE SHOULD NOT BE BUILT UP. WE ARE AWAITING… | ||
| 04-page121 | Secret memorandum instructing a halt in production for 'India' chassis gearbox parts, pending results of modifications. | ||
| View original record | To DK from Wor. " Hs. " " Wor. SECRET. Y5310 WorE/MG/S/25. India Chassis. - Gearboxes. ======================= Further to my conversation yesterday asking you to stop production of the parts affected… | ||
| 04-page122 | Secret memo regarding modifications to four-speed gearboxes for India, discussing issues with 1st and 2nd speed pinions. | ||
| View original record | To CJ. from R. c. to BY. HS. X.5310 S E C R E T. RL/146.S.25 I N D I A. FOUR SPEED BOXES. X.5310 With reference to your memo. re. 4-speed boxes it was towards the end of Feb. that Derby were advised… | ||
| 04-page123 | Page 2 of a report discussing design suggestions for a shaft and change lever, comparing it to the 40/50 model. | ||
| View original record | -2- practice) is successful. We gave them in addition to this by wire from Le Canadel a square and hexagon shaft in case they thought these were more practical. Time has been taken by one suggestion… | ||
| 04-page124 | Modifications to decrease the height of the floorboards for the 20 HP model. | ||
| View original record | To BY. from AJS. c. to Wor. Hs. 45310 AJS1/MS. 5. 26. 20 HP. MODIFICATIONS TO DECREASE HEIGHT OF FLOORBOARDS. X. 5500 X. 5310 With reference to EY/C4/H24.4.26., dealing with the above subject, in… | ||
| 04-page125 | Secret internal memo discussing modifications to a 4-speed gearbox for India to avoid excessive scrap parts. | ||
| View original record | X.5310 To BY. from R. c. to CJ. BJ. c. to HS. Wor. S E C R E T. R1/MS.5.25. I N D I A. 4-SPEED BOX. X.5310 I wired you yesterday regarding the above, as follows :- "TO AVOID EXCESSIVE SCRAP CHANGE… | ||
| 04-page126 | The failure of a first speed gear test for the 'India' gearbox. | ||
| View original record | R.R. 493a (New) (D.B. 17) 20-9-26) I.M.D. EXPERIMENTAL REPORT. Expt. No. REF. Hs/LG13.5.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. SECRET. 'INDIA' GEARBOX. We wired you… | ||
| 04-page127 | Post Office Telegram with handwritten instructions regarding adjustments to splines and a servo drive. | ||
| View original record | Roycar Derby Try 8 splines only if still works on increase to 120 degrees still using only 3 understand larger just speed pinion does not work out if therefore 120 degrees unsatisfactory use the stop… | ||
| 04-page128 | On a Post Office Telegraph form regarding modifications to a worm wheel, servo, and braking system. | ||
| View original record | 3) Replaced lubricated felt hollow worm wheel increased length of worm and made servo do less work by increasing angle or diameter of cams also good to reduce front braking because its effect on… | ||
| 04-page129 | Modification to the 'India' 4-speed gearbox to improve oiling of the worm and worm wheel. | ||
| View original record | V5310 To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. S E C R E T. Hs2/LG16.5.25. 'INDIA' 4-SPEED GEARBOX. Investigations show that very little oil gets on to the worm and worm… | ||
| 04-page130 | Improvements to increase the wearing capacity of the India gearbox servo drive. | ||
| View original record | X5310 TO [REDACTED]. FROM AJS. Copy to [REDACTED] HS. SECRET. INDIA. AJS/16.5.25. GEARBOX. We send herewith Lec. 2069., shewing improvements for increasing the wearing capacity of the India gearbox… | ||
| 04-page131 | 'creeping' issue in a gearbox and proposing further tests on spline and serration angles. | ||
| View original record | To Hs. from R. c. to CJ. Wor. c. to BY. X.5310 S E C R E T. R1/149.5.28. INDIA. GEARBOX. X.5310 With reference to the above I understand that one of the angles of splines that we have given has proved… | ||
| 04-page132 | Instructions regarding the modification and fit of parallel and taper bore pinion serrations. | ||
| View original record | -2- and fully engaged. The parallel serrations we think ought not to creep. If they do we want you to shorten the serrations to something less than the length of the teeth on the gear. If the control… | ||
| 04-page133 | The design and supply of an oil thrower for a 4-speed gearbox. | ||
| View original record | ORIGINAL X5310 TO HY. FROM AJS. SECRET. AJS1/149.5.25. Copy to - AI/HS. INDIA. 4 SPEED GEARBOX. X5310 We send you herewith drawing No. Lec. 2070., shewing an oil thrower which can be fitted to the… | ||
| 04-page134 | Secret memo discussing experiments to fix the 'creeping gears' issue in the India 4-speed gearbox, focusing on spline angle and parallelism. | ||
| View original record | To Hs. from R. c. to CJ. Wor. BY. SECRET X.5310 R2/M21.5.25. 'INDIA' INDIA 4-SPEED BOX. X.5310 The other day I wrote to you about making experiments to see the cause of the creeping gears. Some of the… | ||
| 04-page135 | Gear bore fitment and a proposed lubrication system for a servo drive wormwheel. | ||
| View original record | -2- At the same time I am sure they would be all wrong if they are tight in any other place than directly under the driving teeth. You can imagine a slightly taper bore in a gear of very little over… | ||
| 04-page136 | Modifications to the 'India' gearbox, focusing on the angle of splines and gear alterations. | ||
| View original record | R.R. 453a (New) (D.B. 175 15-9-24) 3 M.D. EXPERIMENTAL REPORT Expt. No. X5310 REF. HS3/LG22.5.25. To R. from Hs. c. to CJ. BJ. c. to E. RG. c. to DA. AJB. c. to BY. Wor. S E C R E T. 'INDIA' GEARBOX.… | ||
| 04-page137 | Comparative diagram illustrating two designs of splined pinions. | ||
| View original record | 1.1835 DIA +000 -002, 5875, 1.425 DIA, 1.365 DIA, SPLINES PRODUCED FROM EXISTING PINIONS (TORSIONALLY FREE) AND DO NOT COME OUT OF MESH., USED ON "SOLID" PINIONS WITH UNSATISFACTORY RESULTS, REF:-,… | ||
| 04-page138 | Improved lubrication scheme for a 4-speed gearbox servo. | ||
| View original record | TO BY. FROM AJS. SECRET. X5310 AJS1/M28. 5. 25. C. to -or. HS. INDIA. 4 SPEED GEARBOX. SERVO LUBRICATION. We send herewith drawing Lec. 2072. showing an improved lubrication scheme for the above, in… | ||
| 04-page139 | Improved lubrication scheme for the 'India' four-speed gearbox and servo. | ||
| View original record | X5310 No. -- BY/C6/H. 3.6.25. "INDIA" FOUR SPEED GEAR BOX. SERVO LUBRICATION. We have received LeC. 2072 showing an improved lubrication scheme for the above, and MM. have written to the effect that a… | ||
| 04-page140 | Secret report on experiments with the 'INDIA' gearbox, focusing on oil supply to the worm wheel and spline modifications. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. X5310 SECRET. 'INDIA' GEARBOX. X. 5310 We find that the oil thrower instructed in leC.2070 is effective as regards supplying an… | ||
| 04-page141 | Modifications and testing of the 'Inma' gearbox. | ||
| View original record | EXPERIMENTAL REPORT. REF HSS/LG12. 6.25. Expt. No. X5310 SECRET. 'INMA' GEARBOX. X5310 To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. We find that the oil thrower instructed in… | ||
| 04-page142 | Modifications to the 'INDIA' gear box regarding taper serrations and keyways. | ||
| View original record | V5310 HS. [illegible stamp] BY10/H. 15.6.25. "INDIA" GEAR BOX. Referring to the gears which R. suggested should be produced on taper serrations, we had thought that you would take some of the gears… | ||
| 04-page143 | Requesting a modification to a servo drive worm wheel for a 4-speed gearbox to reduce its weight. | ||
| View original record | 45310 To BY. from AJS. c. to HS. S E C R E T. AJS2/M22625 I N D I A: 4-SPEED GEARBOX. X. 5310 X. 5370 On the model of servo drive worm wheel recently brought here by Hs., we found that the weight came… | ||
| 04-page144 | Secret memo regarding a suggested improvement to the 4-speed gearbox, specifically the clearance for the gear change lever. | ||
| View original record | √5310 TO HS. FROM AJS. SECRET. AJS1/M22. 6. 25. Copy to Mr. RW. INDIA. 4 SPEED GEARBOX. In reference to the free sliding of gear change lever transversely in its shaft bearings, we are writing this… | ||
| 04-page145 | Secret memo regarding the return of vehicle 9-G-111 for an 'India' gearbox inspection. | ||
| View original record | To AJS. from Hs. S E C R E T. /5310 Hs6/LG30.6.25. 'INDIA' GEARBOX. X5440 Referring to AJS3/M25.6.25. We are expecting 9-G-111 back at the Works in a day or two. It has now completed 10,000 miles in… | ||
| 04-page146 | Part replacements and material orders for the 2nd motion shaft on the 20-HP chassis for India. | ||
| View original record | COPY. V5310 To. Wd. C. O.P.Dept. C. TD. C. Sft. C. CHAT. C. My/Rns. C. Eff.Dept. BY/TWD/GK.2.7.25. 20-HP. CHASSIS. (INDIA). (4). 2nd. MOTION SHAFT. SECTION. 5050. Please receive herewith the following… | ||
| 04-page147 | List of drawings and part modifications for the 20-HP Chassis (India) gearbox and actuating gear. | ||
| View original record | COPY. Y5310 To Wd. C. O.P. Dept. C. TD. C. Sft. C. CHAT. C. My/Rns. C. Eff: Dept. BY/TWDG/GK.2.7.25. 20-HP. CHASSIS. (INDIA).(4). GEAR BOX AND ACTUATING GEAR. SECTION 6030. Please receive herewith the… | ||
| 04-page148 | List of drawings for the Gear Box Undersheet for the 20-HP India Chassis. | ||
| View original record | COPY. X5310 To Wd. C. O.P.Dept. C. TD. C. Sft. C. CHAT. C. MY/Rne. C. Eff.Dept. BY/TWD5/GK.3.7.25. 20-HP CHASSIS. (INDIA). (4). GEAR BOX UNDERSHEET. SECTION. 6160. Please receive herewith the… | ||
| 04-page149 | Parts list and order request for various components for Series 'P' and 'G' vehicles. | ||
| View original record | COPY CONTD. OK G.52,435.Angle of End Plate.(Pocket). 1 off. _ G.52,436.Angle on End Plate.(Centre). 1 off. " G.52,437.Side Plate (NS). 1 off. " G.52,438.Side Plate (OS). 1 off. " G.52,439.Dust Guard… | ||
| 04-page150 | Secret memo from 'R' to 'CJ' detailing a 60-mile test run of a modified India chassis. | ||
| View original record | To CJ. from R. c.c. to BJ. Hs. . . BY. EP. . . FN. SECRET. R5/M24.7.25. INDIA CHASSIS. X.5770 X.5310 (X5310) I ran the slightly modified India 60 miles last evening. This had the semi-balloon tyres,… | ||
| 04-page151 | Testing of specially ground continuous gears for a four-speed gearbox to eliminate humming. | ||
| View original record | X5310 HS. BY16/H. 6.8.25. FOUR SPEED BOX. CONTINUOUS GEARS. I am sending you herewith three pairs of continuous gears which have been ground with the large special form of tooth. The object the design… | ||
| 04-page152 | The performance of a gearbox and clutch, noting its good handling is up to standard. | ||
| View original record | To Hs. from R. c. to CJ. BY. X.5310 R9/M25.8.25. GOS.111. GEARBOX. X.5310 With the exception of servo jaggers this gearbox and clutch has functioned extremely well, the handling of the gears and… | ||
| 04-page153 | Testing the ventilation of a 20 HP gearbox by drilling a hole to investigate oil leaks. | ||
| View original record | To RP. from Hs. c. to HY. c. to Rx. [Handwritten]: X5310 HsS/LG6. 10.35. 20 HP. GEARBOX. [Handwritten]: X5310 Y4247 The question of ventilation of the 20 HP. gearbox was gone into on experimental… | ||
| 04-page154 | From 'R' to 'CJ' discussing the shift in preference from 3-speed to 4-speed gearboxes for the 20 HP and 40/50 HP models. | ||
| View original record | To CJ. from R. X5310 R4/M19.10.25. My dear CJ. (As. for your information. CJ.) EXPERIMENTAL WORK. X. 8310 X. 5310 X. 8920 Referring to your CJ7/E16.10.25., and the mention of a 3-speed gearbox, we had… | ||
| 04-page155 | Frame stiffness, the testing of a new tie-rod, and gearbox design considerations between the 20 HP and 40/50 chassis. | ||
| View original record | To Hs. from R. c. to CJ. DA. BY. R7/MS.11.25. X5310 X. 8380 X. 8310 X. 5310 I have asked DA. to arrange for you to test a tie-rod of increased dia. We are not sure that the tie-rod permanently… | ||
| 04-page156 | Investigation into a stiff gear lever on a 20 HP chassis, considering gearbox oil viscosity. | ||
| View original record | √5310 EP. C. Hc. Copy BY18/H. 25.11.25. 20 HP. CHASSIS. RE VISCOSITY OF OIL IN GEAR BOX. ---------------------------------------------------- Referring to EP13 H. 24.11.25. I have made enquiries in… | ||
| 04-page157 | Modifications to the India gearbox and floorboard for increased clearance. | ||
| View original record | To BY. from AJS. c. to Hs. X5310 AJS2/M14.12.25. INDIA GEARBOX AND FLOORBOARD CLEARANCE. X.5310 X.5500 Since writing our memo. AJS1/M14.12.25. dealing with the above, this matter has been taken up… | ||
| 04-page158 | Following up on a telegram regarding the essentiality of a lubricator for the India Gearbox servo drive. | ||
| View original record | TO PY. FROM AJS. Copy to - HS. X5310 AJS1/M14.12.25. X5310 X5500 X5370 X5960 re. INDIA GEARBOX, AND FLOOR CUT AWAY ABOVE. We telegraphed you on Thursday last as follows - "DOES HIVES CONSIDER… | ||
| 04-page159 | Modifications and clearances for the India market gearbox and floorboards. | ||
| View original record | BY. from AJS. c. to R. CJ. c. to Hs. EY/C. X5310 AJS1/M27.1.26. INDIA GEARBOX AND FLOORBOARD X.5310 CLEARANCES. X.5500 Replying to EY/CH21.1.26. and referring to your GL.172., we realised when sending… | ||
| 04-page160 | Weight comparison document for components between models G.11 and G.111. | ||
| View original record | N5310 To BY: from Hs/Rm. Spare Hs/Rml/LG1.2.26. 20 HP. WEIGHTS. +4538 We understand that on production the chassis weight of G.111. exceeds that of G.11. by 200 lbs. From the following figures it will… | ||
| 04-page161 | Modifications to the India Gearbox to allow for the lowering of floor-boards. | ||
| View original record | 40-R. FROM AJS. ORIGINAL Y5310 AJ81/M2.3.36. C. to - BY. CC. HS. RAVEN INDIA GEARBOX. MODIFICATIONS TO ALLOW FLOOR-BOARDS TO BE LOWERED. Y5310 FES We send herewith drawing LeC. 2205. (original to BY.… | ||
| 04-page162 | Solution for hot air and gas leaks through the floorboards via the gearbox gate mechanism. | ||
| View original record | To Hs. from AJS. c. to EY. LHS. DA/EV. Y5310 AJS1/M24.3.26. GAS LEAKS THROUGH INDIA FLOORBOARDS. X.5500 X.3908 X.5310 We understand that you have again taken up the matter of hot air leakage into the… | ||
| 04-page163 | Proposing a revised scheme to fix gas leaks through India floorboards to avoid issues with dismantling the gearbox. | ||
| View original record | Y5310 To Hs. From AJS. c. to BY. LHB. c. to DWEV. AJS1/M25.3.26. GAS LEAKS THROUGH INDIA FLOORBOARDS. X.3908 X.5500 X.5310 Referring to our AJS1/M24.3.26., will you kindly substitute the scheme… | ||
| 04-page164 | Sluggishness issue with the India change speed lever and requesting tests for the new EAC.7 gearbox. | ||
| View original record | X5310 To Hs. from AJS. c. to R. CJ. AJS1/M8.4.26. RE. GEARBOXES. X.5310 X.7310 The transverse sliding of the India change speed lever even when the gearbox is hot always seems a little sluggish. We… | ||
| 04-page165 | The chassis gear ratios, engine revs, and dynamo revs for the Goshawk II and III models. | ||
| View original record | X5312 1.5.26. GOSHAWK II & III. CHASSIS GEAR RATIOS, etc. The two back axle ratios are now :- 11/50 12/50 giving ratios of :- 1 : 4.545 1 : 4.167 Taking the low back axle ratio, namely, 1 : 4.545, the… | ||
| 04-page166 | Graph of road speed versus engine RPM for Goshawk II & III gear ratios. | ||
| View original record | GOSHAWK II & III GEAR RATIOS. ROAD SPEED FOR ENGINE R.P.M. ------- GOSHAWK III 4 SPEED BOX _ _ _ _ _ GOSHAWK II 3 SPEED BOX THESE CURVES ARE FOR 11/50 AXLE RATIO AND THE FOLLOWING GEAR BOX RATIOS:-… | ||
| 04-page167 | Confirming a telegram and discussing modifications to the servo braking system for a car in India. | ||
| View original record | To Hs; from R. c. to CJ. BJ. BY. Y5310 R1/M15.5.26. 'INDIA' X.5770 X.5370 X.5310 X.5410 X.5420 We give below a confirmation of telegram sent you yesterday :- "TRY 3 SPLINES ONLY IF STILL WORKS OUT… | ||
| 04-page168 | Solutions for issues with gears, worms, splines, and damping segments. | ||
| View original record | contd :- -2- gear capacity than the Hispano, and therefore if properly lubricated, and of good material and shape, the gear will be alright. It was made a straight worm wheel because it was less… | ||
| 04-page169 | Friction dampers and front spring design, discussing material choices and camber issues. | ||
| View original record | contd :- -3- to fit accurately it could be hammered when in position. The face of the alum. on the drum could have ferodo rivetted to it if by experiment it was proved advisable. In which ways these… | ||
| 04-page170 | Potential improvements to front wheel braking, the servo, and front spring stiffness. | ||
| View original record | contd :- -4- the pivots we can only improve this by giving ample initial XXXX lean, and reducing the front wheel braking as suggested in the first part of this memo. You will remember that I have… | ||
| 04-page171 | Experiments with lower gear ratios for the 20 HP car due to heavier coachwork demands. | ||
| View original record | To R. from BJr Copy to Cr. Copy to BX. Copy to Hs. X5310 HS Speed of 20 HP Car. I was interested to see DA2/M29/10/26 addressed to BY., stating that you wished to make experiments with lower gear… | ||
| 04-page172 | Standardisation document for the incorporation of 'B' type shear-levers with 'D' type steering. | ||
| View original record | NO. 705 REVISED (500) (26.5.26) 5-10-26) SM. X. 5310 COMPLETED 11.11.26 STANDARDISATION of CHASSIS PARTS Date: 22.10.26 No. X 5310 Drawing No: G.52092 Description of Parts: INCORPORATION OF 'B' TYPE… | ||
| 04-page173 | Provision of high gear ratios for 40/50 and 20 HP cars. | ||
| View original record | X5310 To BY. Hs. from DA. DA3/M16.11.26. GEAR RATIOS. X.8310 X.7310 X.5310 With reference to R3/M8.11.26., we have looked into the question of providing high gear ratios on the 40/50 and 20 HP. cars.… | ||
| 04-page174 | Wording correction on a standardisation sheet for the 20 HP chassis side lever mechanism. | ||
| View original record | W/S. c. to Mr. a. to Hs. X.5310 BY/HS/G.22.11.26. 20 HP. CHASSIS - SIDE LEVER MECHANISM. Referring to your memo C4/C19.11.26, we agree that the standardisation sheet for the incorporation of B. type… | ||
| 04-page175 | Query about the position of experimental lower gears for the 20 HP model, with handwritten notes on gear ratios. | ||
| View original record | S/H Hm. X5310 C3/013.1.27. 20 h.p. GEARBOX Will you please let me know the position in regard to the lower gears which I understand you are experimenting with on the 20 h.p. C. Standard 4.54 2d Ratio… | ||
| 04-page176 | Standardising the gearbox oil level and procedure for checking it to minimise leaks. | ||
| View original record | To Hm. from Hs/Rn. Y5310 GEARBOX. X8310 With reference to the oil level in the gearbox. In the hot weather in France we found it necessary to run with the oil level in the gearbox 3/4" below the top… | ||
| 04-page177 | Modifying the gear box tower cover on a 20 HP chassis to prevent oil leaks. | ||
| View original record | X5310 BY/IWD. c.Mr.Hancock. BY4/H. 25.5.27. 20 HP. CHASSIS. GEAR BOX. COVER FOR GEAR BOX TOWER. I understand at present this is fixed with three bolts or studs. We ought to introduce two more to… | ||
| 04-page178 | Standardization of the speedometer drive for Phantom and India models. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X5310 DA1/M23. 8. 27. PHANTOM & INDIA. SPEEDOMETER DRIVE. X. 8310 X. 5310 With reference to our recent correspondence on the question of increasing the size of the square… | ||
| 04-page179 | The 'India 3' (Next 20 HP) trial car for France, detailing work on the frame, crankshaft, and engine components. | ||
| View original record | Hs. from R. c. to BJ. BY. Y5310 RE/MS.9.27. X.5010 X.5840 X.5380 X.5310 INDIA 3. (NEXT 20 HP. FOR TRIAL IN FRANCE) We understand that the frame for this is in progress, and also the engine crankshaft… | ||
| 04-page180 | Speedometer drive issue on chassis GSK-76. | ||
| View original record | To Roy. from Hs. X5310 HS2/LGS. 9.27. X5310 X4308 RE. CHASSIS GSK-76 SPEEDOMETER DRIVE. This trouble occurred originally on the 3-speed box speedometer drives and has been corrected by the drilling of… | ||
| 04-page181 | Vibration in the change speed lever, recommending a fix with a small rubber pellet. | ||
| View original record | To DA. from Hs/Rs. c. to HX. EP. c. to HY. X5310 X5320 Hs/Rs/LGS.12.27. The Test Dept. have been troubled by a vibration of the change speed lever which coincides with the crankshaft periods of the… | ||
| 04-page182 | Investigation into change gear lever vibration and audible noise on the 20 HP model. | ||
| View original record | Hs/GWH/LG3.12.27. 20 HP. CHANGE GEAR LEVER. There have been complaints of the change gear lever vibrating and causing an audible noise when running in 3rd. gear at speeds of 38 to 42 m.p.h. Our… | ||
| 04-page183 | Blueprint diagram illustrating a cross-section of a component assembly with a rubber block. | ||
| View original record | F.30 G 51552 G 51689 RUBBER BLOCK | ||
| 04-page184 | Inquiry regarding the procedure for removing the gearbox without taking down the engine on model EAC.10. | ||
| View original record | Hs. from DA. L5310 DAL/M1.1.23. EAC.10 ETC. X.7310 X.5310 EAC.10 as you know has a unit engine and gearbox. It would be of use to us to know whether it is the practice to take down the gearboxes… | ||
| 04-page185 | The practice of removing gearboxes from 20HP chassis without removing the engine. | ||
| View original record | Hs. from Mx. X.5310 Mx14/T16.1.28 re EAC-10 etc. DA1/M11.1.28 returned herewith. It is our practice with 20HP Chassis to take down gear boxes without removing the engine. This is necessary where… | ||
| 04-page186 | Accessibility and removal of gearboxes from 20 HP chassis. | ||
| View original record | To DA. from Hs. X5310 EAC. 10. 48310 X5310 Hs2/LG23.1.28. Replying to DA1/Jd11.1.28. Below is a note from Mr. Maddocks, Production Test Dept. as regards accessibility of gearboxes :- "It is our… | ||
| 04-page187 | Modification to the tubular cross member to allow for gearbox removal without taking out the whole unit. | ||
| View original record | BY. from DA. c. to BJ. Hc. X5310 DA2/M6.3.28 INDIA 3. X.5310 X.5770 X.5310 With reference to the long frame and 'X' shaped cross member which R. instructed should be on the next 10,000 mile car, we… | ||
| 04-page188 | Proposals for improving the gas tightness of the 20 HP gear quadrant. | ||
| View original record | DA. c. Hs. X5310 BY1Q/G.18.6.28. 20 HP. GEAR QUADRANT. GAS TIGHTNESS. Referring to DA3/10.6.28. Stent did put forward a number of very ill-considered proposals, none of which had been carried… | ||
| 04-page189 | Speedometer gear ratios, noting a 3% fast reading on Mr. Royce's car and proposing an alteration for two India chassis. | ||
| View original record | To BY. From Hs/Rn. X 5>10 Hs/Ru2/LM.5. 8. 28. SPEEDOMETER GEAR RATIOS. X 4358 On Mr. Royce's car the mileage recorder reads 3% fast. As we propose to fit small instruments to both the two India… | ||
| 04-page190 | Request for modifications to use a 20 HP gearbox and motor to drive a shock absorber test rig. | ||
| View original record | To RHC. from Hs/Rm. X5310 Y235 Ha/Rml/LG3.9.28. We wish to use a 20 HP. gearbox fitted directly to the Royce motor in order to drive a shock absorber test rig. The direct drive shaft to the gearbox… | ||
| 04-page191 | Optimal gearbox and back axle ratios for cars. | ||
| View original record | BJ. OY. Hs. from R. c. to Wor. BY. V5310 R2/M21.9.28 RE. GEARBOX AND BACK AXLE RATIOS. X.5310 X.5350 X.2061 Firstly, I agree that 14-tooth axles are better for all cars for everyday use, because only… | ||
| 04-page192 | Recommendation to keep the non-standard 10 x 47 gears in stock for future review rather than scrapping them. | ||
| View original record | To BY. from Hs. X5310 Hs3/LG11.10.28. 20 HP. 10 X 47 GEARS. Although it has been agreed not to use the 10 x 47 gears as standard, we recommend that any gears which have been produced with this ratio… | ||
| 04-page193 | Letter discussing the need for increased acceleration and considering freewheel technology. | ||
| View original record | Y5310 c. to BJ. LHS. c. to PN. CWB. c. to BY. Hs. c. to C. SG. Elmstead, West Wittering, Chichester. 24th.Oct. 1928. A.W.Claremont Esq., X.523 X.7310 X.281 X.5310 My dear Mr. Claremont, It is realised… | ||
| 04-page194 | Gearbox design, focusing on alternatives for achieving a 3rd speed using an epicyclic gear unit. | ||
| View original record | contd :- -2- but not in the side shaft of the gearbox. This we consider the most practical and quickly available way of providing an easily obtainable 3rd. speed. Our gearbox being especially silent… | ||
| 04-page195 | Discussion comparing different gearbox arrangements, specifically epicyclic versus double helical gears. | ||
| View original record | contd :- -2- We have been over this ground so many times that none of it seems new to us, but I think the combination of the parts now suggested is novel, and gives some advantages not hitherto… | ||
| 04-page196 | Instruction regarding the calibration of speedometers for India 1V cars. | ||
| View original record | X5310 To BY/CGH. from Hs/Rm. Hs/Rm2/LG25.10.28. X4304 BY/CGH4/N24.10.28. INDIA 1V - SPEEDOMETERS. We are asking the A.T. to calibrate their speedometers at 776 revs. Will you therefore instruct this… | ||
| 04-page197 | 30-hour endurance test for the strength of gears in a 20 HP gearbox. | ||
| View original record | RG. from Hs/Rn. X5310 Hs/Sp3/LG7.11.28. STRENGTH OF GEARS. X5310 X4247 With reference to the endurance test to which we have subjected the gears in the 20 HP. gearbox. On the 3-speed box we ran a… | ||
| 04-page198 | Arranging trials of a freewheel with a cancelling clutch and an epicyclic third gear. | ||
| View original record | Hs. from R. c. to BJ. DA. c. to BG. X5310 RL/M20.11.28. EASY THIRD GEAR. AND GEAR CHANGING. X.5310 X.523 X.5300 X.7640 I have arranged with DA. that we will try the freewheel with the cancelling… | ||
| 04-page199 | Order for a custom-calibrated 20 HP speedometer with a cream dial. | ||
| View original record | To ROY/Ms. S from Hs/Bn. X5310 Hs/Rn3/LJS.12.28. 20 HP. SPEEDOMETER. X 4308 Will you please order for us one small dia. A.T. speedometer with a cream dial and black figures similar in colour to those… | ||
| 04-page200 | Design fault in the 'SS' gearbox, specifically the difficulty in engaging reverse gear. | ||
| View original record | Hs. BY. From R. DA. X5310 R1/M17.12.28. 'SS' GEARBOX. X.7310 X.5310 Mr. Hancock could not easily get in the reverse: evidently the sliding pinion was touching the stationary wheel first instead of… | ||
| 04-page201 | Standardisation report for a modified gearbox casing to reduce front floorboard height. | ||
| View original record | ON 768 REVISED (10m) (R.C. 777 - P. 38) M/C & L.TD Y5310 COMPLETED 18.2.29 STANDARDISATION of CHASSIS PARTS. Date 30.5.28 X No. 5310 Drawing No. Part List A Scrap and replace at all costs, including… | ||
| 04-page202 | Record detailing the chassis number, test date, and costs for fitting a new part. | ||
| View original record | The number of the chassis on which the new part will be fitted. 51 in 'O' series. Date when chassis will be handed to test. 6.4.29 Cost of scrapped material, if any. Nil. Cost of jigs and tools. £205. | ||
| 04-page203 | Design of SS and 20 HP gearboxes, comparing different 3rd speed schemes for silence and ease of change. | ||
| View original record | SG. from R. c. to Mr. Fuller. c. to Mr. Beaver. c. to Mr. Olley. c. to Wor. DA. c. to Hs. BY. +5310 R3/MS. 3. 29. SS. AND 20 HP. GEARBOXES. X.7310 X.5310 X.2061 X.523 We have a very good indeed… | ||
| 04-page204 | American schemes and the performance of an 'SS' vehicle after 14,000 miles. | ||
| View original record | contd :- -2- In the meantime I shall be pleased to see if there is anything new to me in the 2 American schemes mentioned by CY. Perhaps he will send drgs. to DA. and DA/Hdy. will make copies and p.… | ||
| 04-page205 | Change gear problems, including epicyclic gears and freewheel sideshafts. | ||
| View original record | DA. BY. from R. RE. c. to SG. c. to Mr. Claremont. X5310 RA/M.7.3.29. CHANGE GEAR PROBLEMS. X.5310 X.5540 X.2061 I shall be pleased to hear if our freewheel sideshaft for the 20 HP. has gone to Derby,… | ||
| 04-page206 | Scheme for a freewheel in the sideshaft of a 20 HP gearbox. | ||
| View original record | BY. HS. from DA. c. to SG. X531D BAS/M20.3.29. 20 HP. GEARBOX. FREEWHEEL IN SIDESHAFT. X.5310 X.523 With reference to R4/147.3.29., we are sending herewith N.schs. 2767/2772/2773, shewing the scheme… | ||
| 04-page207 | Report comparing different change speed gearbox designs for ease of use and quiet operation. | ||
| View original record | To R. From DA. c. to Sg. Hs. BY. <5310 DA1/X525.3.29. CHANGE SPEED GEARBOXES. X:5310 X.523 X.7310. X.2061 Mr. Hardy and I have gone through the gearbox situation, and report as follows: Two objects… | ||
| 04-page208 | Technical comparison of different gearbox mechanisms, listing advantages and disadvantages for each. | ||
| View original record | -2- Of those in Class C, only (12) is being used. Some of the others appear to present possibilities of an original arrangement being arrived at. We attach literature concerning : Salerni coupling,… | ||
| 04-page209 | Comparative analysis of gearbox designs, focusing on the advantages and disadvantages of internal mesh with dog clutches. | ||
| View original record | contd :- -3- their operation required. Failure of the synchronising mechanism interferes very little with the operation of the car. Increase of cost and weight is small. DISADVANTAGES. Some doubt as… | ||
| 04-page210 | Gearbox operations, difficulties with specific gears, and a proposal for an epicyclic 3rd gear with a brake. | ||
| View original record | -4- SEE ORIGINAL FOR SKETCH. The operation of the sliding pieces presents difficulties in both Detroit and Warner gears, excepting the Stutz-Detroit gear, and in this case the box is lengthened to… | ||
| 04-page211 | Modifications to a 3-speed easy-change gearbox roller cage, including sketches. | ||
| View original record | DA. BY. } FROM R. HS. } (At Le Canadel) X 5310 SECRET. R1/10.3.4.29. Rec'd at W.W. 16.4.29. c. to Sg. Wor. E. CY. Mr.Claremont X5323 GEARBOXES We need one of our 3rd speed easy changes as soon as ever… | ||
| 04-page212 | Typed memo discussing the design and testing of a freewheel mechanism with a diagram of a cage component. | ||
| View original record | -2- large diameter of cutter, plenty of clearance; other parts of the circumference will guide the cage. Cage controlled by narrow surface only on each side say .075". To save time I should like to… | ||
| 04-page213 | Proposal for an easy-change gearbox device using a vacuum-assisted clutch mechanism. | ||
| View original record | DA/HDY. By) FROM R. E. Hs.) (At Le Canadel.) X4310 R2/14.4.29 Rec'd at WW. 18.4.29. C. to Sg. Wor. Mr.Claremont. X7310 GEARBOXES - EASY CHANGE DEVICES. X4310 When it is desired to change the throttle… | ||
| 04-page214 | Weight reduction, body construction, and potential performance improvements for the future 20 HP model. | ||
| View original record | X5318 R. from DA. SECRET. DAL/M16.4.29. X5770 X5820 X4012 X4066 c.to Sg. Wor. PN. Hs. FUTURE 20 HP. BY. EP. E. As regards the alternatives Y. and Z. given in R1/M8.4.29., we are in favour of limiting… | ||
| 04-page215 | Modifications and manufacturing methods for a freewheel in a sideshaft gearbox. | ||
| View original record | X5310 BY. from DA. c. to SG. Hs. DA1/M23.4.29. G.4. GEARBOX. FREEWHEEL IN SIDESHAFT. X.5310 X.523 Herewith we send N.sch.2881 shewing the modifications to the freewheel which R. asks for in… | ||
| 04-page216 | Defect in the ground tooth form for 20 HP chassis gears and the implemented solution. | ||
| View original record | Y5310 S.C. L. S.C. Ba. C.S. C. SS. C. Wom. c. Hs. BY/G.1.5.29. ---------------- 20 HP. CHASSIS - GEAR TEETH. Referring to RY/M27.4.29, we had noticed the defect you refer to in producing the ground… | ||
| 04-page217 | Modifications to the 20 HP chassis gears to increase their strength. | ||
| View original record | R. C. H. X5310 BY/G/3.5.29. 20 HP. CHASSIS - GEARS. ------------------------- Further to my memo BY7/G.1.5.29. in looking over the gearbox pieces I noticed that the third speed gear has 14 1/2°… | ||
| 04-page218 | The gear ratio limitations for the 20 HP model. | ||
| View original record | X5310 E. from Hs/Rm. Hs/Rm5/LGS.5.29. 20 HP. GEAR RATIO. X5310 X5820 With reference to E1/M26.4.29. We are not quite sure what figures you have used to arrive at the gear ratios you quote, but the… | ||
| 04-page219 | Stock levels of Bevel Wheels and Pinions for the 20-HP Chassis. | ||
| View original record | X5310 WY from Wd. c to Hs. Wd3/GM/31.5.29. 20-HP. Chassis- 10 x 47 Gears. In accordance with Hs3/L/11.10.28, we have in stock:- 29 - G53169 Bevel Wheels. 26.- G53170 Bevel Pinions. It was recommended… | ||
| 04-page220 | Various approaches to solving gearbox problems, focusing on silent operation and ease of use. | ||
| View original record | X4310 HS. CY. EV. DA. Mr. Claremont. } FROM R. R4/M3.6.29. c. Lord Wargrave LHS. Sg. Wor. Mr. Butler. Ph. E. THE GEARBOX PROBLEM. X4210 X423 X7310 X4510 For a considerable time, we, and most others,… | ||
| 04-page221 | Technical discussion on the Salerni Coupling, its disadvantages, and proposed improvements. | ||
| View original record | -2- contd. Salerni Coupling. This is one of the cleverest attempts at making an easy change. Personally I like the coupling in its simplest form, but I do not like the various devices to overcome its… | ||
| 04-page222 | Report discussing gearbox designs, helical gears, the Salerni coupling, and potential patents. | ||
| View original record | -3- contd. In conjunction with this scheme the 3rd. speed would probably be single or double helical gears, and the engagement be made by a jaw clutch. As far as we can see this combination would make… | ||
| 04-page223 | Recommending that the 20 HP, 10 x 47 axle gears should be scrapped following an increase to the engine bore. | ||
| View original record | To BY. from Hs. c. to Wd. X5310 Hs2/L.11.6.29. 20 HP. 10 X 47 AXLE GEARS. X5310 X Now that we have increased the bore of the 20 HP., the prospect of using this lower gear ratio is very remote. There… | ||
| 04-page224 | Recommendation for speedometer calibration standards for S.S. and 20 HP models. | ||
| View original record | X5310, To Rv. From Hs/Rn. Copy to Mr. EFC. Hs/Rn./L.4.7.22 x7310 x4308 S.S. and India LV Speedometers. In view of the fact that S.S.owners may fit 20" rims with the smaller tyres to their cars, and 20… | ||
| 04-page225 | Request for a report on the freewheel position in the sideshaft on the 20HP gearbox. | ||
| View original record | X5210 He. from DA. DA2/M22. 8. 29. 20 HP. TRANSMISSION. We should be glad to have a report on the position of the freewheel in the sideshaft on the 20HP. gearbox, (N.schemes 2767, 2881. etc.) as weare… | ||
| 04-page226 | Instructions to despatch 20 HP chassis gearbox gears with long teeth to the Gear Grinding Co. for completion. | ||
| View original record | X5310. RHC. BY/Cgh2/G.23.8.29. 20 HP. CHASSIS - GEAR BOX. With reference to the three sets of 3rd speed gears and reverse gear which meshes with same which have been cut with long teeth, will you… | ||
| 04-page227 | Requesting a report on the 20 HP gearbox freewheel and discussing future clutch and flywheel design policy. | ||
| View original record | X5310 Hs. FROM R. A DA. R/DAL/M24.8.29. C. to By. 20 HP+ TRANSMISSION. X.5310 X.5806 X 7200 We should like a report on the position of the freewheel in the sideshaft on the 20 HP. gearbox, (N.schemes… | ||
| 04-page228 | Comparison of freewheel designs for a 20 HP gearbox, contrasting the sideshaft and De Lavaud schemes. | ||
| View original record | HS. from DA. COPY. X5310 DA.1/11.10.29. 20 HP. GEARBOX. FREEWHEEL IN SIDESHAFT. X.5770 X.4474 X.5310 It will have been observed that this arrangement does not function exactly the same as the De… | ||
| 04-page229 | The production and comparative testing of special long addendum teeth gears for the 20 HP gearbox. | ||
| View original record | Hs. DDO X5310. BY/20/N.8.11.29 I would like to remind you that we have produced some special gears with long adendum teeth for the 3rd.speed of the 20 HP. Gearbox. The set of gears are G.53818/9/20.… | ||
| 04-page230 | Investigation into the comparative merits of spur, epicyclic, and internal (spool) gears for a silent 3rd speed gearbox. | ||
| View original record | X5310 RV. from Ds. C. Sg. Hs. Ds3/W24.12.29 X.5310 X.7310 C.523. SILENT 3RD SPEED GEARBOX. Herewith we send N.Sch.3002 - an investigation of the comparative merits of spur, epicyclic, and internal… | ||
| 04-page231 | Potential improvements to change speed gears, including a new silent 4-speed design. | ||
| View original record | X5310 De/Hdy. } FROM R. E. Hs. } (At Le Canadel) RB/103.1.30. c. Se. Wor. Ry. X.523 X.7310 X.5310. X.4510 CAR CHANGE SPEED GEAR I have asked Mr.Hardy to see if he can come here for one week clear,… | ||
| 04-page232 | Gearbox changing and silence, comparing the 20 HP and Phantom models, and considering freewheel improvements. | ||
| View original record | Y5310 R. from DA/Hdy. C. SE. Wor. C. C. CX. Pn. H. C. Hs. Ds. DA/Hdy/1/25.1.30. X.523 X.7310 X.5310 C.2061. GEARBOX CHANGING AND SILENCE I discussed the gearbox situation with C. Cx. and N. on Friday… | ||
| 04-page233 | Report comparing gearbox performance, ease of use, and noise levels with competitor vehicles. | ||
| View original record | Da/Hdy1/15.1.30 contd. -2- than one gear was appreciably increased. Shunting the car took less time. The so called easychange on Graham-Page and Chrysler cars works without much shock that is… | ||
| 04-page234 | Comparing the silence and performance of various gearbox designs, including Wilson, Lanchester and epicyclic types. | ||
| View original record | Y5310 R. from Da/Hdy. (held up) C. Hs. Da. Da/Hdy1/M20.1.30. X.2061 X.523 X.7310 X.5310 GEARBOX - SILENCE. We have made some calculations on the various types of gearbox to determine the relative… | ||
| 04-page235 | 'The Gearbox Problem', comparing existing designs and proposing a new arrangement. | ||
| View original record | X8310. DA. E.) FROM R. BY. HS.) (At Le Canadel.) R2/10.3.30. X.7310. X.5310. X.523. C. to SO. MR. RT. C. to C. CK. Mr. LARSONT. THE GEARBOX PROBLEM. I have the impression that some definite pro- gress… | ||
| 04-page236 | Gearbox design, including reverse units, servo drives, clutches, and braking systems. | ||
| View original record | (2) (d) Then comes the reverse unit which is positive by jaw clutches, preferably of epicyclic type. (e) Servo drive (always connected with the car.) I think the gears as shewn in sketch 1. are… | ||
| 04-page237 | New gearbox design with details on speed rings, pawls, clutches and potential patentable claims. | ||
| View original record | (3) With the gear shown (sketch 1.) there is no need of through drive clutches, either friction or jaw type, until we come to the top gear, which usually presents no difficulties, and a jaw clutch can… | ||
| 04-page238 | 20 HP gearbox leaking oil badly through the ball race housings on a shock absorber rig. | ||
| View original record | RIC. From Ha/Rn. V5310 Ha/Rn. &MJ.13.2.30. The 20 HP. gearbox which we are using on our shock absorber rig leaks oil very badly through the ball race housings. We should be obliged if you could… | ||
| 04-page239 | Gearbox height dropping after 3,000 miles and considering a new cross-member support. | ||
| View original record | X5310 To Da. From Hs/Rn. Ha/Rn.2/MJ.28.3.30. We asked G.W.H. to carefully check the height of the gear-box relative to the frame on his car, and see whether it sunk at all, due to the engine rubbers… | ||
| 04-page240 | Need for a support for the rear of the 20 HP gearbox following tests in France. | ||
| View original record | XS310 BY. From HS/Rn. Hs/Rn.7/MJ.7.4.30. SUPPORT FOR REAR OF THE 20 HP. GEARBOX. You will note from our test in France, that a support for the rear of the 20 HP. gearbox is most desirable. We… | ||
| 04-page241 | Proposal for a new rear suspension for the 20/25 HP gearbox, based on the Phantom II design. | ||
| View original record | Y5 310 To By. from Da. c. Hs. DAL/N9.4.30. Re - 20/25 HP. Gearbox - Suspension at Rear- Herewith is N.Sch.3076 shewing a proposal for carrying the engine and gearbox unit by a Ferodo lined housing at… | ||
| 04-page242 | Preliminary designs and problems related to a full epicyclic gearbox. | ||
| View original record | X6310 R. from De/Hdy. c. Sg. Rg. E. c. R/ Hs. De/Hdy1/M2.4.30. X.7310 X.5310 X.523 GEARBOX PROBLEM. In reply to R1/M.4.30. we have been making preliminary designs for the full epicyclic gear as… | ||
| 04-page243 | Investigation of different gear train arrangements to achieve a specific ratio. | ||
| View original record | -2- De/Hdy1/12.4.30. contd. We have also investigated the following methods of obtaining the necessary ratio :- (1) Simple train annulus driven. (2) Simple train annulus driven driving through the… | ||
| 04-page244 | Investigations into the design and control of a synchro-mesh gearbox, including patent applications. | ||
| View original record | Da/Hdy/1/12.4.30 contd. -3- The planet speed is .436 by engine speed, and the pitch velocity 230 ft. per min. CONTROL. We have made application for patents for :- (a) Clutch pedal interlock, with… | ||
| 04-page245 | Brake application, gear change requirements, and potential control improvements for a vehicle's transmission system. | ||
| View original record | -4- Ds/Hdvl/M12.4.30 contd. The 1" for the application of the brake would not be required if the lever were stopped momentarily for this purpose. Actually, it seems necessary to provide for the more… | ||
| 04-page246 | Technical memo discussing gearbox and clutch issues during vehicle coasting. | ||
| View original record | Da/Hdy1/N12.4.30 contd. -5- Coasting presents some difficulties and seems to require a neutral between 3rd. and top marked on the quadrant at which the dogs are not withdrawn in addition to the… | ||
| 04-page247 | Three gearbox design schemes, including proposals from Mr. Hardy and Mr. Royce. | ||
| View original record | X5310 To R. from Da. c. Ss. E. Rg. c. Hs. Ev. Dall/M14.4.30. X.7310 X.5310 X.523 RE : GEARBOXES. Enclosed herewith is a memo which Mr. Hardy has prepared on the work on the gearbox problem. We also… | ||
| 04-page248 | Technical discussion and comparison of various gearbox and clutch designs, including Armstrong-Siddeley and Chrysler systems. | ||
| View original record | Dall/N14.4.30 contd. -2- This is one more position than provided by Messrs. Armstrong-Siddeley viz. "Coast". In this position the dog clutch can be is not withdrawn, so that the engine can be… | ||
| 04-page249 | Improvements to the car's gear change mechanism, relating to jaw clutches and resilient couplings. | ||
| View original record | X5310 Ds/Hdy. ) FROM R. Hs. E. ) (At Le Canadel) C. SS. WGR. CAR WORK - CHANGE GEAR. When the box is fitted with any form of constant mesh gears with jaw clutch change, the jaw clutch should have many… | ||
| 04-page250 | Investigations and proposals for resolving a car gear problem. | ||
| View original record | V5310 To/Hdy. E. } FROM R. H. } (At W'stmoradel) C. Sec. Wox.} H/1/29.4.30. V5310 X 7310 X 503 CAR WORK - GEAR PROBLEM. I must first thank Messrs. Day and Hardy for their investigations and… | ||
| 04-page251 | Technical summary and discussion of gearbox design alternatives and considerations. | ||
| View original record | -2- itself seems extremely good in several combinations. I had noticed the difficulty with 3 pinion driven trains of getting the 3rd. as high as we might wish, and examined most of the alternatives,… | ||
| 04-page252 | Design document detailing specifications for an epicyclic gearbox and servo control systems, page 3. | ||
| View original record | -3- (6) For simplicity, and for a trial, we may obtain our neutral by letting the reverse run idle. (7) The side lever should have forward, neutral, and reverse, so that one gets a neutral in each… | ||
| 04-page253 | Servo-assisted sequential gear changes and an alternative flywheel sideshaft mechanism. | ||
| View original record | -4- (11) You will see that with either of these servos we should change in sequence (which is preferable) and we need not touch clutch or accelerator and lose time on a hill (or we could interlock if… | ||
| 04-page254 | Request to strip and examine the freewheel on a 20 HP gearbox. | ||
| View original record | YS310 RHC. From Hs/Rm. Hs/Rm.S/W.26.5.30. FREEWHEEL ON 20 HP. GEARBOX. Will you please strip this wheel for examination while the unit on 12-C4 is available. There is some question of this being… | ||
| 04-page255 | Gearbox problems and comparing various design schemes, including epicyclic and Maybach. | ||
| View original record | Hs. Ry. FROM R. c. Sg. Wor. c. Fs. Ds. X5310 RL/M26.5.30 X.7310 X.5310 X.523 GEARBOX PROBLEM. WW. propose to concentrate on our complete epicyclic scheme and what we have given Derby, viz. (1)… | ||
| 04-page256 | Design memo discussing an automatic progressive gear change system and comparing it to the Wilson gear. | ||
| View original record | R1/M26.5.3 O. contd. -2- Change speed relay control is on the steering column. This relay will probably be electrical, but it can be oil or vacuum with certain disadvantages. By using double way… | ||
| 04-page257 | Experimental easy-change gearbox fitted to the 14-EX car. | ||
| View original record | To SG. From Hs. c. to HOF. c. to R. Y5310 Hs.2/AD.2.7.30. EASY CHANGE GEAR. Replying to Sg13/E1.7.30. 14-EX. car has fitted to it an experiment using a constant mesh double helical gear for the 3rd.… | ||
| 04-page258 | Failed free-wheel on a 25 HP model and the need for a modified design. | ||
| View original record | -2- Hs.R/AH.2.7.30.Contd. The free-wheel on the 25 HP. failed. We are still waiting for the completion of the Salerni scheme. If there is going to be an immediate demand for an easy change, the only… | ||
| 04-page259 | Gearbox support for the 20/25 HP model, focusing on tube clearances. | ||
| View original record | X5310 By. from Da. C. Ss. Hs. Del./25.7.30. A.5310 A.502. 20/25 HP. GEARBOX SUPPORT. We have received your telegram saying that the clearance of the tube with the brake rods is not practical from a… | ||
| 04-page260 | Reminding a colleague to write a note regarding 'Silent Third Gear' and considering the purchase of a Graham Paige car for evaluation. | ||
| View original record | S/W. COPY. X5310 To Hs. From Sg. Sg.7/D30.7.30. X.523. X.7310. X.5310. Just a note to remind you to write the note to R., with copies to others concerned, immediately after the holiday in regard to… | ||
| 04-page261 | Solutions for oil leakage from the back of 20/25 HP and 40/50 HP gearboxes. | ||
| View original record | COPY. X5310 DA. BY3/G.20.8.30. c. Hs. ----- X.7310. X.5310. 20/25 HP. and 40/50 HP. GEAR BOXES. RE LEAKAGE OF OIL FROM THE BACK OF THE BOX. We notice on the 20 HP. scheme recently sent us that in… | ||
| 04-page262 | Diagram of the 3rd motion shaft bearing housing and its oil return passage for a 40/50 HP chassis. | ||
| View original record | GEE N. 366 *372 FOR 20 HP GL 418 2 HOLES .1562 DIA. A MILLED RECESS 'A' 40/50 H.P. CHASSIS. 3RD MOTION SHAFT BEARING HOUSING - OIL RETURN PASSAGE. (SCALE - 1/2) ROLLS-ROYCE LTD. DERBY. 26 SEP 1930 FCE… | ||
| 04-page263 | The urgent need to improve the 2nd and 3rd speed gears for the high-torque Phantom engine. | ||
| View original record | Hs. } FROM R. Hy. } E. Sg. Wor. Y.5310 R7/M22.8.30. X.7310 X.5310 X.523 CAR WORK - CHANGE GEAR POSITION. We are looking upon this as a very urgent matter. It is difficult to get anything sufficiently… | ||
| 04-page264 | Demonstration and gearbox issues of competitor cars, the Graham Paige and Studebaker Commander. | ||
| View original record | Sg. From Hs. c. to Wor. Y5310 Hs.4/W.29.8.30. Y523 Y7310 Y5310 SILENT THIRD GEAR. Replying to Sg7/DSc.7.30. This matter has been fully discussed with H. On Wednesday the 27th. inst., we took to W.T. a… | ||
| 04-page265 | Summary of the principles and schemes guiding the development of new gear change mechanisms. | ||
| View original record | X5310 Sg. } FROM R. Hs. } c. Sg. Wor. By. c. c. EP. PN. R1/M.9.30. X.523 X.5310 X.7310 CHANGE GEAR SUMMARY UPON WHICH OUR WORK IS BASED. It is understood and agreed that at least we must have a more… | ||
| 04-page266 | Comparative analysis of spool gear, freewheel, and synchro-mesh gearbox systems from competing manufacturers. | ||
| View original record | SPOOL GEAR. (Graham-Paige and Chrysler) (1) 3 pairs of gears always in mesh (both idling and direct drive, and there is no reason for easier change except :- (2) 3rd. to 4th. very small ratio of… | ||
| 04-page267 | Decision not to trial an epicyclic gear design and the difficulties of the car's development. | ||
| View original record | RL/M.9.30 contd. -3- as regards change). One other design was sent of an epicyclic 3rd. and 4th. with lower gears than ordinarily, but I did not consider this perfect enough to make so stopped the… | ||
| 04-page268 | Development of a silent third gear and comparing car performance. | ||
| View original record | COPY. Y5310 To Hs. From Sg. c. to WGT. FN. Sg19/31.9.30. X.523. X.7310. X.5310. Re. Silent Third Gear. Thanks for Hs.4/MJ.29.8.30. I am delighted to hear that you took the Graham Paige down to R. and… | ||
| 04-page269 | Various schemes and arrangements for a silent third gear gearbox. | ||
| View original record | 15310 Sg. From Hs. c. to Mor. c. to PN. Hs.2/WJ.2.9.30. V.S. Dept V5310 VS310 SILENT THIRD GEAR. Replying to Sg19/S1.9.30. W.W. are really busy on various gear-box schemes. We found when we were there… | ||
| 04-page270 | Comparison of the Graham Paige car with the Phantom II (26-EX) leading to a proposed experiment in engine construction. | ||
| View original record | -2- Hs.R/M.L.3.9.30.Contd. R. was quite impressed with the Graham Paige, almost to the point of being annoyed by its good features. The silence of the third gear showed up to be very much better than… | ||
| 04-page271 | Scheme to address oil leakage from the back of 20/25 & 40/50 gearboxes. | ||
| View original record | Y 5319 By, from Da. C. Ms. DA5/M2. 9.30. X.7310 X.5310 20/25 & 40/50 GEARBOXES LEAKAGE OF OIL FROM BACK OF BOX. Replying to By3/G20.8.30, the scheme which has always been fitted to the P.2. gearbox… | ||
| 04-page272 | Development direction of a silent third gear, specifically concerning the epicyclic gear design. | ||
| View original record | Y531/ To Hs. from Sg. Sg12/28.9.30. X.523 X.5310 X.7310 SILENT THIRD GEAR ETC. Referring to Hs2/MJ2.9.30, you will have received a copy of R1/M.9.30. I should be glad if you could tell me what line… | ||
| 04-page273 | Proposed schemes for a silent third gear and an interim plan to fit a freewheel to a Phantom car. | ||
| View original record | To Sg. From Hg. SILENT THIRD GEAR ETC. Replying to Sgl4/28.9.30. We do not know definitely what form the schemes will take which R. mentions in his memo RL/1.9.30. It would appear that he has gone… | ||
| 04-page274 | The arrangement and testing of epicyclic trains for a 25HP epicyclic gearbox. | ||
| View original record | BY. FROM DA. C. to SG. HS. 25HP. GEARBOX. EPICYCLIC. Herewith we send N. sch. 3147. arrangement of the epicyclic trains on the above gearbox. This is to enable some specimen trains to be made for the… | ||
| 04-page275 | And comparing several different gearbox design schemes and proposals. | ||
| View original record | SG. FROM R. XX310 RL/M.10.30. C. to WOR. EY. C. to HS. C. C. to M. E. GEARBOX PROBLEM. X.7310. X.5310. Referring to the situation at the moment, we have in the hands of Derby the helical sideshaft and… | ||
| 04-page276 | Evaluation of various gearbox and clutch systems, including epicyclic, spool, and synchronous mesh types. | ||
| View original record | (2) too elaborate and complicated for profitable production- (some of No. 3. has gone to Derby.) This 4th. scheme consists of the same epicyclic accelera- train and reverse as No.2, but the 2nd. and… | ||
| 04-page277 | Visit to West Wittering to discuss development schemes for an easy-change gearbox. | ||
| View original record | Y3310 To Sg. From Hs. C. WOT. C. EV. Hsl/AJS.16.10.30. X.7310. X.5310. X.523. VISIT TO WEST WITTERING 30.9.30. Easy Change. We found that R. had taken your note seriously and was busy making simpler… | ||
| 04-page278 | Gearbox from the U.S.A. and a scheme to fit Maybach type clutches. | ||
| View original record | HS1/AP.12.10.30 contd. -2- With regard to the gear box from U.S.A. he was quite interested in this and would like to see same when it arrives. It was also agreed Derby should make a scheme to fit… | ||
| 04-page279 | Simpler schemes for easy gear changes in Phantom I and II models. | ||
| View original record | X5310 To Hs. from Sg. c. Wor. Hy. Sg3/23.10.30. X.7310 X.5310 X.523 RE - EASY CHANGE. Thanks for hsl/AD2.10.30. I am very pleased to note that R. has taken this matter seriously and is busy making… | ||
| 04-page280 | Differences in epicyclic gears and the fitting of Maybach clutches to the Phantom I gearbox. | ||
| View original record | To Sg. From Hs. c. to Mr. c. to EV. X5310 Hs.2/AJ./4.10.30. X.7310. X.5310. X.523. Re. Easy Change. Replying to SgS/23.10.30. The chief difference between the proposed epicyclic gear for the Phantom… | ||
| 04-page281 | Creation of a specimen epicyclic 3rd speed train for testing purposes. | ||
| View original record | X.7310 BY. FROM DA. C. to SG C. to HS. DA1/M4.10.30. X.7310. X.5310. X.523. GEARBOXES - EPICYCLIC 3rd. SPEED. Herewith we send N. sch. 3149. shewing the epicyclic 3rd. speed train in the revised… | ||
| 04-page282 | Confirming drawings have been sent for a revised epicyclic 3rd speed gearbox intended for testing purposes. | ||
| View original record | BY, FROM DA. Copy to - HS. X 1310 DA1/203.10.30. REVISED EPICYCLIC 3rd. SPEED GEARBOX. X.5310. X.7310. X.523. This is to confirm having sent you on Saturday N. sch. 3155, a drawing of the gears in the… | ||
| 04-page283 | Schemes related to a revised epicyclic three-speed gearbox. | ||
| View original record | X5310 BY. FROM DA. C. to SG. HS. REVISED EPICYCLIC 3rd. SPEED GEARBOX. DA1/M16.10.30. X. 523. X.5310. X.7310. We send herewith N. schemes N.50/51.. showing particulars of the casing of this gearbox.… | ||
| 04-page284 | Revised drawing for an epicyclic third gearbox, specifically regarding the movement of a joint. | ||
| View original record | BY. FROM DA. C. to SG. HB. X5310 DA1/M25.10.30. EPICYCLIC THIRD GEARBOX REVISED. X.523. X.7310. X.5310. Herewith we send N. sch. 3156 shewing the actuation of the gears in the three speed box. It also… | ||
| 04-page285 | Modification to the jaw clutches in a revised epicyclic third-speed gearbox. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X5310 DA1/M29.10.30. EPICYCLIC THIRD SPEED GEARBOX REVISED. X. 7310. X. 5310. X. 523. Herewith we send N. sch. 3158. shewing a modification to the jaw clutches in… | ||
| 04-page286 | Modification to the 1st speed dogs for the all-epicyclic gearbox. | ||
| View original record | X5310 BY. FROM DA. Copy to SG. Copy to HS. DA2/M29.10.30. ALL-EPICYCLIC GEARBOX. X. 523. X.7310. X.5310. Herewith we send N. scheme 3159., shewing a modification to the 1st. speed dogs for the… | ||
| 04-page287 | The oil pump and lubrication arrangement for a revised epicyclic 3rd speed gearbox. | ||
| View original record | XS310 BY. FROM DA. Copy to SG. Copy to HS. DA1/M31.10.30. EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310. X.5310. X.523. Herewith we send N. sch. 3161. shewing the arrangement of the oil pump and… | ||
| 04-page288 | Revisions to the epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. SS310 DA1/M1.11.30. Copy to SG. Copy to HB EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310 X.5310. X.523. Herewith we send N. sch. 3160. giving further particulars of the box, namely, the… | ||
| 04-page289 | Current position on change gear (gearbox) technology and various alternative schemes. | ||
| View original record | SG. FROM R. H1/M3.11.30. C. to HCR. BY. C. to HS. FN. C. to C. SP. C. to DA. E. CHANGE GEAR - PRESENT POSITION. X.523. X.7310. X.5310. X.4510. X.2061. Although we have given this subject much… | ||
| 04-page290 | Evaluation of different gearbox and transmission designs, including competitor analysis and historical development attempts. | ||
| View original record | (2) applied to a 3 speed box, which is not ideal for present driving conditions which ask for a fairly low top and high third. This gear change is not available to us and I should not recommend its… | ||
| 04-page291 | Design update memo regarding the development of a 3-speed pre-selector gearbox. | ||
| View original record | (3) The design work this month. In the meantime Derby have many parts that they can proceed with. We finally came to the conclusion that to overcome certain difficulties of control and operation a 3… | ||
| 04-page292 | Modifications and additions to a revised epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X-J-310 DA1/W4.11.30. REVISED EPICYCLIC 3rd. SPEED GEARBOX. X.7310 X.5310. X.523. We send herewith N. sch. 3163. shewing some slight modifications and additions to… | ||
| 04-page293 | Revised epicyclic 3rd speed gearbox and a proposed 8.5 inch fabric coupling. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X5310 DA1/M7.11.30. EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310. X.5310. X.523. Herewith we send N. sch. 3166. shewing additional details of the above, namely,… | ||
| 04-page294 | Modifications to the servo and brake arrangements for the revised epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X5310 DA2/47.11.30 X.7310 X.5310 X.523. EPICYCLIC 3rd. SPEED GEARBOX REVISED. we herewith send N. scheme 3168. - Modifications to the servo and brake arrangements… | ||
| 04-page295 | Revisions to the epicyclic 3rd speed gearbox, specifically regarding the inspection cover and vacuum cylinder. | ||
| View original record | BY. FROM DA. C. to SG. HS. X8310 EPICYCLIC 3rd. SPEED GEARBOX. (REVISED.) DA1/Mil.11.30. X.7310. X.5310. X.523. Herewith we send N. sch. 3152. - Plan View of the above. It will be noticed that the… | ||
| 04-page296 | Shortening the oil pump for the epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. X 5310 DA2/M12.11.30. c. to SG. HS. EPICYCLIC 3rd. SPEED GEARBOX (REVISED) - OIL PUMP. X.7310. X.5310. X.523. On looking further into the assembly of this box we think we should like to… | ||
| 04-page297 | Proposal for the assembly procedure of a revised epicyclic 3rd speed gearbox. | ||
| View original record | X5310 BY. FROM DA. DA3/M12.11.30. X.7310. X.5310. X.523. Copy to HS. EPICYCLIC 3rd. SPEED GEARBOX REVISED - ASSEMBLY. We should like to give you an idea of how we propose to assemble this box so that… | ||
| 04-page298 | Design and testing of a new 25HP & 45HP epicyclic gearbox, considering helical versus straight gears for silent operation. | ||
| View original record | HS. BY. } FROM R. DA. (AT Le Canadel.) C. to SG. WGN. C. to E. RIC. 25HP. & 45HP. GEARBOX. EPICYCLIC UNITS. I am very anxious to get a specimen gear made of the type we are proposing to fit with the… | ||
| 04-page299 | Work allocation for a steering column job related to a vacuum control pre-selection scheme. | ||
| View original record | COPY. (2) R1/M/20.12.30 cont. It will be remembered that there is the steering column job to do for the vacuum control of the double top pre-selection scheme. DA/EV. volunteered to do this but he may… | ||