Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Preliminary drawings and alternative designs for a 'Japan 3' gearbox, focusing on the reverse pinion mechanism. | ||
| View original record | X 5310 DA/HDY. E. FROM R. HS. BY. (At Le Canadel.) R1/M23.1.31. C. to SG. WOR. HY. RIC. JAPAN 3. GEARBOX. X.5310 X.523. After looking over the preliminary drawings for the above I wired that I thought… | ||
| scan0002 | Hand-drawn schematic of a gearbox mechanism with annotations. | ||
| View original record | CONSTANT MESH 3RD SPEED GEARS 2ND SPEEDWHEEL LOCKING FROM BACK OF BOX 1ST 2ND 3RD 1ST AND REVERSE DRIVERS ABOUT SAME DIAMETER 2ND DRIVER RATHER LARGER THAN REVERSE DRIVER SHEWN ALL GEARS OUT SHAFT… | ||
| scan0003 | Technical memorandum discussing the design of an eccentrically engaged reverse gear pinion with rounded teeth. | ||
| View original record | DA/HDY. E.) FROM R. BY HS. ) (At Le Canadel. Copy to - SG. WOR. X5310. JAPAN 3. GEARBOX POSITION. Design RL/M25.1.31. X5310 X5-3. As regards eccentrically engaged reverse I think that if Works can… | ||
| scan0004 | Page discussing alternative gearbox designs with a corresponding gear layout sketch. | ||
| View original record | (2) 2nd. That none are so satisfying as the original - i.e. with special gear - present and Phantom 2. 3rd. That the original although appearing costly can be made of a more crude design: and is much… | ||
| scan0005 | Sketch of a swinging reverse mechanism with a reverse slider. | ||
| View original record | (3) SWINGING REVERSE. SKETCH 1. Reverse slider. Looking backwards from engine. | ||
| scan0006 | Final recommendation sketch for a shaft and pinion assembly within a box or housing. | ||
| View original record | (4) FINAL RECOMMENDATION. URGENT. SKETCH 2. Central. Rear end of box. Bore box probably one size right through, pass pinion and shaft in from rear, put on wheel and tighten up nut through hole in… | ||
| scan0007 | Revisions to the Japan 3 gearbox, specifically the inclusion of Maybach jaws. | ||
| View original record | R. FROM DA. C. to SG. WOR. C. to HS. BY. X 5310 DA2/M31.1.31. JAPAN 3. GEARBOX. We send herewith N. sch. 3210., unfinished drawing of the gearbox, revised by the inclusion of the Maybach jaws, and the… | ||
| scan0008 | Providing suggestions for the improvement of the Japan 3. Gearbox design. | ||
| View original record | DA/HDY. ) FROM R. HS. BY. ) (At Le Canadel.) X8310 RL/M3.2.31. C. to SG. WOR. C. to E. RHC. HY. JAPAN 3. GEARBOX. I am very pleased with this, but I think it can be made a little better by the… | ||
| scan0009 | Unfinished proposal for a Japan 3 gearbox actuating mechanism, comparing it to other designs. | ||
| View original record | R. FROM DA. SECRET X5310 DA1/M4.2.31. C. to SG. WOR. C. to HS. BY. C. to HY. JAPAN 3. GEARBOX. X.5310. X.2061. Herewith we send unfinished scheme of the proposal for the actuating mechanism. The… | ||
| scan0010 | Secret memo regarding gearbox arrangement schemes for the 'Japan 3' project. | ||
| View original record | X8310 BY. FROM DA. c. to SG. WOR. c. to HS. HY. SECRET. DA4/M7.2.31. JAPAN 3. GEARBOX. Herewith we send N. schemes 3210/16/17/18. - arrangements of the gearbox. They are nearly up-to-date but there… | ||
| scan0011 | Secret memorandum discussing two alternative proposals for modifying the Japan 3 gearbox, specifically concerning the mounting of the reverse wheel. | ||
| View original record | R. FROM DA. SECRET DA1/M12 2 31. C. to SG. NOR. C. to BY. HS. HY. JAPAN 3. GEARBOX. Herewith we send print of N. sch. 3222., shewing certain parts of the gearbox revised in accordance with R1/M3.2.31… | ||
| scan0012 | Secret memo providing a technical review and feedback on the 'Japan Gearbox' design, including its gears, serrations, and sliders. | ||
| View original record | DA. E. ) FROM R. BY. HS. ) (At Le Canadel.) Copy to SG. WOR. X5310 SECRET JAPAN GEARBOX. I have received the servo and speedometer drives and I cannot see any means of simplifying or improving, but I… | ||
| scan0013 | Sending schemes and particulars for the Japan 3 gearbox casing. | ||
| View original record | BY. FROM DA. SECRET X5310 DA1/M2.3.31. C. to SG. WOR. C. to HS. HY. JAPAN 3. GEARBOX. Herewith we send N. schemes 3241/2/3., particulars of the casing. As the rear part of the casing has already been… | ||
| scan0014 | Required alterations to easy-change silent gearboxes, specifically concerning the neutral position. | ||
| View original record | To R. From Hs/Rm. c. to Da. W. c. to Ev. Wor. Sg. XS 310 Hs/Rm.14/RT. 2.3.31. X.7310. X.5310. X.523. R.R. EASY CHANGE SILENT GEARBOXES. In view of the information obtained from Dr. Maybach, it appears… | ||
| scan0015 | Gearbox design improvements, comparing various models like Maybach and epicyclic, and future plans. | ||
| View original record | HS. DA/HDY. ) FROM R. E. BY. ) (At Le Canadel.) c. to - SG. WOR. GEARBOXES. X1310 R2/M9.3.31. X.7310. X.5310. X.523. So far we have got on slowly with the above to make any definite improvement from… | ||
| scan0016 | Design choices for the Japan 3 gearbox, comparing new N. schemes with existing 25HP and P.2 models for cost-effectiveness. | ||
| View original record | R. FROM DA. SECRET. XY310 DA3/M10.3.31. C. to SG. WOR. C. to HS. BY. C. to HY. JAPAN 3. GEARBOX. Herewith we send prints of N. schemes 3241/2/3., final details of the gearbox casing and clutch pit,… | ||
| scan0017 | Scheme to incorporate a Warner Synchronising mechanism into the Japan III gearbox. | ||
| View original record | X5310 To Da. From Hs/Rm. Hs/Rm.1/MJ.14.3.31. We got BY. to go over the scheme for the Japan 111 gearbox to see if there was room in the box to incorporate the new Warner Synchronising mechanism shewn… | ||
| scan0018 | Issue of rattling side shaft gears and proposing a programme of tests to find a solution. | ||
| View original record | To RHC. From Hs/Rm. X8310 Hs/Rm.2/MJ.16.3.31. RATTLE IN SIDE SHAFT GEARS. We have recently been suffering from an epidemic of rattling side shaft gears. We think that these are worse with the… | ||
| scan0019 | The investigation and resolution of gearbox oscillation on the 25 HP model. | ||
| View original record | FOR FILES. X5310. 11.5.31. 25 HP. GEARBOX OSCILLATION. X.634. X.5310. It was noticed on the production dynamometer that the front of the propeller shaft and rear of gearbox underwent a lateral… | ||
| scan0020 | Design of a future 25HP synchro-mesh gearbox, comparing it with Buick's design. | ||
| View original record | HS. ) FROM R. X5310 BY. ) R10/M28.5.31. C. to SG. WOR. FUTURE 25HP. GEARBOX. X.5310. C. to HY. RHC. SYNCHRO MESH. X.523. It is difficult to understand the time such things take but we find certain… | ||
| scan0021 | Technical memo investigating the cause and potential solutions for a gear rattle issue on the 25 HP model. | ||
| View original record | 85310. To R. From Hs/Grys. c. to Sg. Wor. c. to E. Da. c. to By. Hs/Grys.1/WWJ.29.5.31. x634. x5310. GEAR RATTLE. 25 HP. We have noticed, particularly with the low inertia flywheel (LeC.2830), a… | ||
| scan0022 | Experimenting with a flexible drive between the flywheel and gearbox, noting gear rattle issues. | ||
| View original record | -2- Hs/Grys.1/MJ.29.5.31.Cont'd. We are also experimenting with a flexible drive between the flywheel and gearbox P.2. When we replaced the Hardy joint on 25-EX. by a steel disc gear rattles were… | ||
| scan0023 | Investigating the cause of gear rattles on a 25 HP engine, linking it to heavier cast iron pistons. | ||
| View original record | To R. From Hs/Gry. c. to Sg. Wor. c. to E. Da. c. to Ey. 15310. Hs/Gry.5/KT.9.6.31. X.634. X.5310. 25 HP. GEAR RATTLES. Continuing our report Hs/Gry.1/AU.29.5.31. we have been able to verify that the… | ||
| scan0024 | Questioning the efficacy of the oiling scheme for the 20/25HP Gear Box. | ||
| View original record | Hs/GWH from Mx. 85310. Mx7/T10.6.31. 20/25HP Gear Box. We have been going into the question of the efficacy of the oiling scheme fitted to the gear box lids which is apparently intended to supply oil… | ||
| scan0025 | Technical update on gearbox designs for the 25HP and 45HP car models, detailing the synchro-mesh and a new friction-operated unit. | ||
| View original record | SG. FROM R. X5310 R3/M12.6.31. C. to WOR. HS. C. to RHC. BY. CAR WORK - GEARBOXES. X.5310. X.7310. 25HP. The synchro mesh design is now complete at WW. 45HP. The double top design is now nearly… | ||
| scan0026 | New gearbox with synchro-mesh actuation, its mechanism, and modifications required to fit it to an existing 20/25 model. | ||
| View original record | X5310 BY. FROM DA. DA1/M15.6.31. C. to SG. WOR. C. to HS. BY. J. 4. GEARBOX. We send herewith N. schemes 3283/88. shewing respectively the gearbox with synchro-mesh actuation for top and third, and… | ||
| scan0027 | Slight alteration to the synchro-mesh gearbox and existing servo gear. | ||
| View original record | X5310. By. from Da. Da2/M20.6.31. c. Sg. Wor. c. Hs. By. X.5310 J.4. GEARBOX. On further investigation of the synchro-mesh gearbox sent to you, we should like to make a slight alteration as indicated… | ||
| scan0028 | Accompanying schematics for the J.A. Gearbox, specifically for the servo shaft, speedometer drive, and a modification to the change gear pendulum lever. | ||
| View original record | X5310 By. from Da. c. Sg. Hs. By. Dal/M23.6.31. J.A. GEARBOX X.5310 We send herewith N.sch.3289 showing the servo shaft for the above, and also N.sch. 3295 showing the speedometer drive and a… | ||
| scan0029 | The J.4 Synchro Mesh Gearbox, requesting figures on the gear lever load and movement of a Buick for comparison. | ||
| View original record | HS. FROM DA. X 5310 DA2/M24. 6. 31. X.523. X.5310. J. 4. SYNCHRO MESH GEARBOX. You will probably have noticed that we are asking for a movement at the top of the gear lever of 3.9 a side. We did not… | ||
| scan0030 | Modification to a gearbox, incorporating a delay action cam surface on the synchromesh mechanism inspired by a Buick design. | ||
| View original record | X5310. By. from Da. c. Sg. Hs. Da4/M2.7.31. J.4. GEARBOX X.5310 We send herewith N.scheme 3299 showing a modification to the above gearbox incorporating a delay action cam surface on the synchro mesh… | ||
| scan0031 | Sending additional schemes (3290, 3301, 3302) and information for the J.4. Gearbox. | ||
| View original record | X5310 By. from Da. c. Sg. Wor. Hs. Da3/M4.7.31. J.4. GEARBOX. X.5310 We send herewith N. schemes 3290, 3301 and 3302 being additional views of the gearbox. This supplies some of the information… | ||
| scan0032 | Flywheel vibration and gear rattle for a 25 HP engine, testing a stiffened flywheel and fabric joint. | ||
| View original record | 85310 To R. From Ha/Gry. c. to Sg. Wor. c. to M. Da. c. to By. Ha/Gry.1/WJ.8.7.31. 25 HP. FLYWHEEL VIBRATION & GEAR RATTLE. x634 Further to our Ha/Gryal/WJ.29.5.31. in which we suggested that we had… | ||
| scan0033 | Design drawing for a Hardy Coupling for a clutch. | ||
| View original record | Hs 374 HARDY COUPLING FOR CLUTCH L C 2830 LEFT VIEW: 6.500 DIA 4.250 DIA 6.450 DIA CTS 4 HOLES 1 BA FIT 20º 50' Rad Rolling A B C SECTION VIEW: SECTION ABC ·950 SEC ·050 HARDY FRASIB Hs 375 OTHER… | ||
| scan0034 | Modifications to the Japan 4 model's gearbox clutch pit and pedal. | ||
| View original record | By. from Da. c. Sg. Hs. X5310. Dal/M10.7.31. JAPAN 4. GEARBOX CLUTCH PIT X,5310 We send herewith N.sch.3309 showing the clutch pit casting. It will be seen that we have slightly modified the bolt… | ||
| scan0035 | Assembly method and design discrepancies of the J. 4. Gearbox. | ||
| View original record | BY. FROM DA. X5310 DA1/M13.7.31. C. to HS. RHC. J. 4. GEARBOX. With reference to N. sch. 3283, we think we ought to draw your attention to the method of assembling part of the box so that if you have… | ||
| scan0036 | The filling plug, level stick, and cover for the J.4. gearbox. | ||
| View original record | X5310 By. from Da. c. Sg. Hs. Da2/M14.7.31. X.5310 X.7310 J.4. GEARBOX. Herewith we send N.sch.3311 showing the filling plug and level stick for the above box. If the dip stick handle is approved we… | ||
| scan0037 | Standardising adjustable pedals and modifying the clutch pedal for the 25 HP synchro-mesh gearbox. | ||
| View original record | X 5310 HS. FROM DA. DA1/M15.7.31. Copy to SG. J. 4. - SYNCHRO MESH GEARBOX. X.5310. X.5470. We recently sent you a drawing for the pedals of the above gearbox using existing forgings. But we presume… | ||
| scan0038 | Modifications to the gearbox, clutch operating shaft, and brake compensator shaft. | ||
| View original record | X.5310. By. from Da. c. Sg. Hs. Da2/M16.7.31. J.4. GEARBOX X.5310 Herewith we send N.sch.3312 showing the lubrication of the clutch operating shaft, as promised. It will be seen that we suggest that… | ||
| scan0039 | Despatched schematic and modifications to the J.4. gearbox, universal joint, and pendulum lever. | ||
| View original record | X5310. By. from Da. c. Sg. Hs., Da2/M20.7.31. J.4. GEARBOX X.5310 On Sat. last we despatched to you N.sch. 3314 showing the gearbox rear suspension, backing light switch attachment, etc. etc. It will… | ||
| scan0040 | Modifications to the J.4 gearbox servo for the 20/25 model. | ||
| View original record | X5310 By. from Da. c. Sg. Hs. Da4/M21.7.31. J.4 GEARBOX. X.5310 Herewith we send N.sch. 3315 giving particulars of the slight modifications necessary to the 20/25. servo to fit to that box. Da. | ||
| scan0041 | Modifications to the universal joint flange piece and a sheet metal baffle for the gearbox. | ||
| View original record | X5310 BY. FROM DA. DA2/M23.7.31. C. to SG. HS. J. 4. GEARBOX. X.5310. X.7310. Herewith we send N. scheme 3317. shewing modifications to the flange piece of the universal joint to adapt them to the… | ||
| scan0042 | Modifications to the J.4. gearbox, change gear lever, and brake pedal mechanism. | ||
| View original record | X5310. By. from De. c. Sg. Hs. Da2/M24. 7. 31. J.4. GEARBOX X.5310 Herewith we send N.schemes 3320/21 showing respectively the modifications to the change gear lever and gate, and the modifications to… | ||
| scan0043 | Modifications to a 20/25 gearbox with synchronous mesh. | ||
| View original record | X5310 BY. FROM DA+ DAL/M26.8.31. C. to SG. HS. 20/25. GEARBOX WITH SYNCHRONOUS MESH. Replying to BY16/G21831, we send herewith N.sch 3331. shewing the modifications we suggest to clear up the… | ||
| scan0044 | Issue of sticking cones in a synchromesh gearbox, with references to Buick's instructions and cone angles. | ||
| View original record | RHC. FROM DA/HY. C. to HS. BY. DA. X5310. DA/HDY1/M19.9.31. X523 X7310 X5310 SYNCHRO MESH GEARBOX. STICKING OF CONES. We telegraphed to you yesterday to the effect that Buicks lay much stress on the… | ||
| scan0045 | Gearbox component alignment and friction reduction, suggesting a trial of a bronze stirrup. | ||
| View original record | (2) It will be seen that the inner sleeve with the teeth at each end must also be true on its outside dia. The alignment of the 1st. motion shaft will clearly have some effect on the functioning of… | ||
| scan0046 | Performance of a 25 HP synchromesh gearbox after road testing and comparison. | ||
| View original record | 65310 To R. From Hs. c.c. to Sg. Wor. c.c. to E. Da. c.c. to Ey. Hs.5/MJ.22.9.31. X.523. X.5310. 25 HP. SYNCHRO MESH GEARBOX. We have had this gearbox fitted to a 25 HP. car on the road today. The… | ||
| scan0047 | On the successful development of a new synchro-mesh gearbox with a silent 3rd gear. | ||
| View original record | HS. ) FROM R. BY. I C. to SG. WOR. C. to DA. RHC. X5310 R1/M26.9.31. X.523 X.7310 X.5310 X.4027 CAR GEARBOXES - SYNCHRO MESH. WITH SILENT 3rd. (New name wanted) This seems to be an unqualified… | ||
| scan0048 | Dynamometer test report on a 25 HP synchro-mesh gearbox. | ||
| View original record | To R. From Ha/Gry. c. to Sg. Wor. c. to E. Da. c. to By. X5310. Ha/Gry.1/MJ.3.10.31. 25 HP. SYNCHRO MESH GEARBOX. We have carried out a dynamometer test on this gearbox fitted to 12-04. Half an hours… | ||
| scan0049 | Modifications requested by the Experimental Department for the J. 3 and 4 gearbox. | ||
| View original record | COPY. X5310. BY. FROM DA. DA2/M6.10.31. X5310 C. to SG. HS. RHC. J. 3. AND 4. GEARBOX. -------------------- Herewith we send N.sch. 3354. shewing some modi- fications requested by the Expl. Dept. (1)… | ||
| scan0050 | Testing the reverse gear and the number of keys required for the J. 3 & 4 gearbox. | ||
| View original record | COPY X5310. HS. From DA. DA3/M6. 10. 31. X5310. Copy to BY. J. 3. & 4 GEARBOX. With reference to HS/GRY1/MJ31031, would it not be desireable to run the reverse under full engine torque for some… | ||
| scan0051 | Adoption of a synchro mesh gearbox versus a new design based on two epicyclic gear units. | ||
| View original record | COPY. X5310. HS. } FROM R. DA/HDY. } C. to Sg. WOR. BY. C. to Mr. CLAREMONT. RL/M8.10.31. X523 Sent off 28.10.31. X5310 X7310 CHANGE GEARS. We are up against a loss of RR. dignity in adopting the… | ||
| scan0052 | Different ideas for a gearbox scheme, including epicyclic units and synchronised brakes. | ||
| View original record | (2) This scheme embodies: (1) R's idea of synchronised brakes applied to epicyclic. (2) R's idea of using bevel or other accelerating unit to reverse drive, thus avoiding any extra wheels etc for… | ||
| scan0053 | Development and implementation of easy change and synchro-mesh gearboxes for various car models. | ||
| View original record | X5310. To R. From Hs. c. to Sg. Wor. c. to P. Dn. c. to By. EASY CHANGE GEARBOXES. We expect next week to be sending a 25 HP. car to France for 10,000 miles test, fitted with a synchro-mesh gearbox.… | ||
| scan0054 | Note expressing concern over gearbox development and the immediate needs of the Phantom II model. | ||
| View original record | -2- Hs.1/MJ.20.10.31. Cont'd. or shock absorbers etc., simply because they have no interest. They pay sufficient money for an R.R. car and expect it to perform satisfactorily. My chief reason for… | ||
| scan0055 | Development and urgency of an easy-change gearbox with synchro-mesh and silent third gear. | ||
| View original record | X5310. X.7318 To R. from Sg. re Easy Change Gearboxes. Sg8/E21.10.31. Copy to Wor. Hs. E. DA. BY. Referring to the above you will remember that in R1/M26.9.31 you said you had decided that you would… | ||
| scan0056 | Ongoing difficulties with noisy gears in 25 HP synchro-mesh gearboxes, recommending the immediate purchase of gear grinding equipment. | ||
| View original record | 85310 To Wor. From Hs. c. to By. c. to RHC. Hs.1/MJ.23.10.31. 25 HP. SYNCHRO-MESH GEARBOXES. We have now tested the second of the 25 HP. synchro mesh gearboxes and we are still in difficulty with… | ||
| scan0057 | Fitting and testing two different synchro mesh gearboxes. | ||
| View original record | x5310. To RHC. From Hs/Gry. Hs/Gry.1/MJ.22.10.31. SYNCHRO MESH GEARBOXES. Will you please fit the gearbox tested on 12-G4. to 18-G4. in a similar condition as for the last test. The oil used to be… | ||
| scan0058 | Test report on the reverse gear of a 25 HP synchromesh gearbox. | ||
| View original record | γ 5310 To R. from Hs/Gry. c.c. to SG. Wor. c.c. to B. De. c.c. to EV. Hs/Gry.1/KT. 24.10.31. 25 HP. SYNCHROMESH GEARBOX. TESTS ON REVERSE GEAR. (1) Complete to N.Scheme. The car was run on the road… | ||
| scan0059 | Correcting a fault where two gears were meshing simultaneously in the 25 HP synchromesh gearbox. | ||
| View original record | X5310 P. [crossed out] cr. Wor. [crossed out] cr. DA [crossed out] c. Hs. BY.10/G. 26.10.31. 25 HP. SYNCHROMESH GEARBOX. ---------------------------- Referring to the trouble described in the last… | ||
| scan0060 | Design detail for the 25HP Synchro Mesh Gearbox. | ||
| View original record | COPY. X5310 HS. FROM DA. DA2/M26.10.31. X5310 C. to SG. WOR. BY. 25HP. SYNCHRO MESH GEARBOX. With reference to HS/GRY1/KT241031., the last para., we should like to point out that on the N. schemes the… | ||
| scan0061 | Technical memo on the 'China' easy change gearbox, discussing reverse gear engagement, seizing bushes, and gear creep. | ||
| View original record | COPY. HS/GRY. FROM R. X5310. R1/M27.10.31. X5310 C. to SG. WOR. C. to BY. DA. 'CHINA' - EASY CHANGE GEARBOX. The engagement of the reverse was shewn on the WW. drawing to have .100" lead between the… | ||
| scan0062 | Two proposals to improve lubrication of the reverse shaft for the 25 HP Synchro Mesh Gearbox. | ||
| View original record | BY. FROM DA. X5310 DA2/M3.11.31. X5310 C. to SG. HS. 25 HP. SYNCHRO MESH GEARBOX. Herewith we send N. scheme 3359. shewing two proposals for improving the lubrocation of the reverse shaft on this box.… | ||
| scan0063 | Bearing tests and shaft hardening for a Synchro Mesh Gearbox. | ||
| View original record | HS. FROM DA. X5310. DAL/M4.11.31. X5310 Copy to BY. SYNCHRO MESH GEARBOX. Referring to the tests on the reverse we presume that all these tests for the bearings standing up are done with a… | ||
| scan0064 | Modifications to a cast iron gearbox. | ||
| View original record | To RHC. From Hs/Gry. y5310 Hs/Gry.10/MJ.10.11.31. CAST IRON GEARBOX. We wish to use in this box the stiffened reverse shaft at present in 12-G4. The front bush we should like to the temporary scheme… | ||
| scan0065 | Technical memorandum on overcoming reverse gear issues in the 25 HP synchromesh gearbox. | ||
| View original record | 85310 To H. From Hs/Gry. c. to Sg. Wor. c. to E. Da. c. to Hy. Hs/Gry.7/WJ.11.11.31. 25 HP. SYNCHROMESH GEARBOX. REVERSE GEAR. We have overcome the trouble of reverse gear working out under full load… | ||
| scan0066 | Drawing showing modifications to a synchromesh gearbox reverse shaft to increase stiffness. | ||
| View original record | Hs 450 THICKNESS OF BUSH UNALTERED 1.337 DIA 1.250 DIA 1.450 DIA .760 DIA 2.750 SYNCHROMESH GEAR BOX MODIFICATIONS TO REVERSE SHAFT FOR INCREASED STIFFNESS ROLLS-ROYCE, LIMITED PRINT ROOM 11 NOV 31 | ||
| scan0067 | Requesting confirmation to modify the 25 HP reverse gear on the easy change gearbox before production. | ||
| View original record | DA c. Hs/Gry. X5310 BY.3/G.13.11.31. 25 HP. REVERSE GEAR ON EASY CHANGE GEARBOX. --------------------------------------- Referring to Hs/Gry.7/MJ.11.11.31. we take it we will be in order if we modify… | ||
| scan0068 | Requesting modifications to reverse shafts for synchro-mesh gearboxes. | ||
| View original record | To RHC. From Hs/Gry. ✓5310 Hs/Gry.5/MJ.17.11.31. SYNCHRO-MESH GEARBOX. Will you please modify the reverse shaft in 12-G4. to the accompanying sketch. Will you also please make another solid shaft to… | ||
| scan0069 | Stiffening of the reverse shaft for the 25 HP synchro mesh gearbox. | ||
| View original record | BY. FROM DA. γ 8310. DA2/M17.11.31. X5310 C. to SG. HS. 25 HP. SYNCHRO MESH GEARBOX REVERSE. Herewith we send N. sch.3367 shewing the reverse shaft stiffened following the results of the recent… | ||
| scan0070 | Criticisms and potential solutions for the Synchro Mesh Gearbox bearings. | ||
| View original record | X5310 HS. FROM DA. DA4/M18.11.31. X5310 C. to BY. RHC. SYNCHRO MESH GEARBOX. There was a criticism of the bearings on the 3rd. motion shaft in the original comments on the synchro mesh box. Would you… | ||
| scan0071 | Load calculations and adequacy of the spigot bearing in the 25HP Synchro Mesh Gearbox. | ||
| View original record | HS. FROM DA. X5310 DA2/MS.11.31. X5310 C. to BY. RHC. 25HP. SYNCHRO MESH GEARBOX We have seen notes on a telephone conversation re. the above box, and wish to comment on HS' remark that the spigot… | ||
| scan0072 | Experiment to adapt a reverse gear for the 20/25 HP synchro mesh gearbox. | ||
| View original record | BY. FROM DA. X5310. DA5/M24.11.31. X5310. C. to SC. HS. 20/25 SYNCHRO MESH GEARBOX. We send herewith N. Sch. 3374 shewing the type of reverse gear shewn on N. Sch. 3364, adapted to the present 25 HP.… | ||
| scan0073 | Sending a striking mechanism scheme for the 25HP Synchro Mesh Gearbox. | ||
| View original record | BY. FROM DA. X5310 DA4/M26.11.31. X5310. C. to SG. HS. 25HP.SYNCHRO MESH GEARBOX. Herewith we send N. scheme 3375, shewing the striking mechanism for use with the reverse gear shewn on N. scheme 3369.… | ||
| scan0074 | Cross-sectional diagram of a mechanical assembly featuring a rubber block. | ||
| View original record | G51852, G51689, RUBBER BLOCK, 4 CK | ||
| scan0075 | Permanent lubrication scheme for the 25 HP gearbox. | ||
| View original record | COPY. X5310. BY. FROM DA. DA.5/M.1.12.31. X5310. C. to SG. HS. J. 3. GEARBOX. Herewith we send N.sch.3384. This is the permanent sch. for the lubrication of the 25 HP. gearbox, replacing the temporary… | ||
| scan0076 | Updated method for lubricating the reverse shaft on all synchro mesh gearboxes. | ||
| View original record | Copy. X 5310. BY. FROM DA. C. to SG. HS. DA.1/M.2. 12. 31. X5310 X7310 LUBRICATION OF REVERSE. ALL SYNCHRO MESH GEARBOXES. Herewith we send N.sch.3385 shewing a further development of the method of… | ||
| scan0077 | Modifications to the side levers for the 25HP Synchromesh Gearbox. | ||
| View original record | SECRET. X.5310. To BY. FROM DA/EV. DA/EV.2/5.12.31. COPY TO SG. WOR. HS. SIDE LEVERS SYNCHROMESH GEARBOX. 25HP. We have previously sent you a scheme showing the modifications which seen necessary to… | ||
| scan0078 | Analysis of gearbox noise and other issues in a 25 HP Synchromesh system. | ||
| View original record | 85310 To R. from Hs/Gry. c. to Sg. Wor. c. to E. Da. c. to By. Hs/Gry.4/KT.15.12.31. 25 HP. SYNCHROMESH. We have had, in addition to reverse gear coming out, three troubles with this gearbox :- (1)… | ||
| scan0079 | Gearbox performance, detailing issues with gear noise, engagement, and different gear specifications. | ||
| View original record | (2) We copper deposited a set of gears to examine the bedding after some hard use and found the bedding to be good. This set of gears in whatever box, has always been the best. We have also made sets… | ||
| scan0080 | The road test of the 20-G-4 Special Touring Saloon, noting issues with its gearbox and comparing performance to a Trials car. | ||
| View original record | X5310. X5992 X5120. X5310. To Hs. from Sg. re 20-G-4. Copy to Wor. The Special Touring Saloon. Sg3/E17.12.31 Dodd doubtless told you that Cx. and I tried this car yester day. Generally speaking, we… | ||
| scan0081 | Experiments to improve the silence of the 25 HP Synchro Mesh Gearbox helical trains. | ||
| View original record | COPY. X5310. BY. FROM DA. DAL/M19.12.31. X5310 C. to SG. HS. RHC. 25 HP. SYNCHRO MESH GEARBOX. ------------------------------------------- Herewith is N.sch.3396. shewing the following experi- ments,… | ||
| scan0082 | Issue of top gear working out on a 25HP Synchro Mesh Gearbox. | ||
| View original record | Copy. X5310. HS. } FROM DA/HDY. RHC. } DA/HDY1/M19.12.31. X5310 C. to - SG. WCR. C. to - E. BY. 25HP. SYNCHRO MESH GEARBOX. TOP GEAR WORKING OUT. (1) If this is due to mal-alignment of the 1st. and… | ||
| scan0083 | Experiments to prevent the top gear disengaging on a 25HP synchromesh gearbox. | ||
| View original record | Copy. X5310. TO BY. FROM DA. DA.1/EV.21.12.31. X5310 COPY TO SG. WOR. HS. SYNCHRO MESH GEARBOX. 25HP. We send herewith N.sch.3397. shewing further experiments to prevent the top gear coming out.… | ||
| scan0084 | Experiments to improve idling noise and test the reverse gear on a 25 HP synchromesh gearbox. | ||
| View original record | Y5310 To R. from Hs/Gry. c. to Sg. Wor. c. to E. Dn. c. to By. RHC. Hs/Gry.5/KT.23.12.31. 25 HP. SYNCHROMESH GEARBOX. Noise. We have effected an improvement in the idling noise of our gearboxes in two… | ||
| scan0085 | Experiment on drawing N.sch. 3396 and a required modification to the 25 HP S.M. gearbox. | ||
| View original record | X5310 BY. ) FROM DA. HS. DA5/M31.12.31. X5310 C. to E. RHC. 25 HP. S.M. GEARBOX. We presume that the experiment shewn on N.sch. 3396 are proceeding, and that we shall hear the results in due course.… | ||
| scan0086 | The successful testing of a 25 HP synchromesh reverse gear. | ||
| View original record | X 5310 To R. from Hs/Gry. c. Sg. Wor. c. E. Da. c. By. Hs/Gry.4/KT.2.1.32. 25 HP. SYNCHROMESH REVERSE GEAR. We have now completed a successful test of the reverse gear to W.Sch.3374, but with both… | ||
| scan0087 | Technical memorandum discussing methods to achieve quieter gearboxes, including the use of single helical sideshafts and different bearing types. | ||
| View original record | E. DA/HDY. } FROM R. HS. } (At Le Canadel.) XS310. R2/M.4.1.32. Copy to SG. WOR. RHC. SILENT GEARBOXES. X7310 Very many years ago we introduced single helical side-shafts and got much greater silence… | ||
| scan0088 | Design, noise, and potential improvements for a 25HP synchromesh helical gearbox. | ||
| View original record | E. DA. ) FROM R. HS. BY. ) (At Le Canadel.) Y5310 R.3/M6. 1. 32. Sent from WW. 9.1.32. C. to - SG. WOR. 25HP. SYNCHRO MESH HELICAL 3rd. GEARBOX. XJ310 Gearbox noises with helical gears always in mesh… | ||
| scan0089 | Progress report on the 25 HP Synchro-Mesh gearbox, detailing improvements in noise reduction and plans for standardization. | ||
| View original record | To R. (At Le Canadel). From Hs. X 5310. Hs.6/MJ. 8.1.32. c. to Sg. c. to Wor. c. to E. c. to Da. c. to By. 25 HP. SYNCHRO-MESH GEARBOX. X 5310. It will be seen from the report on 18-G4, that the… | ||
| scan0090 | Investigation into a 25HP S.M. gearbox, focusing on the spigot bearing for production. | ||
| View original record | BY. FROM DA. X5310. DAL/M.11.1.32. Copy to HS. 25HP, S.M. GEARBOX. With the investigation we carried out on this box taken from 18-G-4. on Friday last we believe you have all the information from us… | ||
| scan0091 | Production updates and improvements for the 25 HP Synchro Mesh Gearbox. | ||
| View original record | 85310. R. From Hs/Gry. c. to SH. Nor. c. to K. Da. c. to Hy. Hs/Gry.S/MA.18. 1. 32 25 HP. SYNCHRO MESH GEARBOX. We have now overcome all the difficulties with this gearbox. The idling of the gears is… | ||
| scan0092 | List of design changes for the 20/25HP Synchro-Mesh Gear Box on experimental chassis. | ||
| View original record | K5310. To [redacted], from RHC. c. [redacted] Hs. RHC5/EE20.1.32. Re: 20/25HP. 'Synchro-Mesh Gear Box The latest Gear Boxes fitted to Experimental Chassis, differ from the original design as follows:-… | ||
| scan0093 | The manufacturing and finishing processes for vehicle gears, including burnishing, grinding, and potential design alternatives. | ||
| View original record | (2) RHE4/BE20.1.32. The continuous and third speed gears are the original spiral angle 32°-7', and the degree of silence necessary has been obtained by burnishing. The gears fitted to the experimental… | ||
| scan0094 | Standardisation sheet regarding the 25HP chassis synchro-mesh gearbox and its modifications. | ||
| View original record | x5310, Hs. BY/SS7/N.20.1.32. RECEIVED 1932 JAN 20 HSC 25HP. Chassis - Synchro Mesh Gearbox. Standardisation Sheet X.No.5310. This Standardisation Sheet has been issued with the qualification "To… | ||
| scan0095 | The introduction of a burnishing process for the 20/25 HP Easy Change Gearbox 'U' Series. | ||
| View original record | RECEIVED 1932 JAN 27 HS X5310 Ws. c. Hs. c. RHC. c. AEM. BY.15/G. 26.1.32. 20/25 HP. EASY CHANGE GEARBOX - 'U' SERIES. ------------------------------------------------- The Experimental Department… | ||
| scan0096 | Required modifications to the 25HP synchromesh gearbox concerning pinion length and reverse shaft bush clearance. | ||
| View original record | 85310. By. From Hs/Gry. Hs/Gry.4/MA. 27. 1. 32. 25HP SYNCHROMESH GEARBOX. It is important that when engaging 1st gear the 2nd speed sliding pinion should pick up the reverse shaft before 1st gear… | ||
| scan0097 | Experiments to cure overrun gear rattles on a 25HP car using a friction damper. | ||
| View original record | Y 5310. X.634. X.5310. S. From HS/Gry. c. to SS. Wor. c. to DS. c. to W. HS/Gry.A/HA.15. 3. 32. OVERRUN GEAR RATTLES. 25HP. We have recently been able to carry out further experiments on this trouble… | ||
| scan0098 | Confirming a modification to the 25 HP Synchromesh Gear Box regarding the number of plungers to be fitted. | ||
| View original record | X5310. By. From Hs/Gry. 25 HP SYNCHROMESH GEAR BOX. Confirming our conversation with By/SS, only 6 plungers should be fitted to the top gear sliding piece in the front 6 slots. Hs/Gry. Hs/Gry.7/MA.1.… | ||
| scan0099 | Instruction regarding the installation of a new single bush in the reverse pinion for the 25 HP synchro mesh. | ||
| View original record | X5310. By. From Hs/Gry. Hs/Gry.4/MA.10. 2. 32. 25 HP SYNCHRO MESH. Concerning the new single bush in the reverse pinion; it is intended that this be pushed in from the large pinion end. In both cases… | ||
| scan0100 | Test report on a new full length taper bush for the 25HP Synchromesh reverse gear. | ||
| View original record | 85310 To E. From Hs/GWH. c. to By. Wor. c. to Da. Hs/GWH.11/MA.12. 2. 32. Re: 25HP SYNCHROMESH GEAR BOX. REVERSE GEAR. We have carried out the following tests with the new full length taper bush… | ||
| scan0101 | Data sheet detailing gear ratios for a 20/25 HP Synchro Mesh Box with different axle configurations. | ||
| View original record | Y5310 20/25 HP. SYNCHRO MESH BOX. (N.Sch.3283) FEB. 1932. GEAR RATIOS. (1) Revs. of Prop. Shaft per Rev. of Engine. 4th. Speed. 3rd. Speed. 2nd. Speed. 1st. Speed. Reverse. 1 .728 .484 .303 .310 (2)… | ||
| scan0102 | Cancelling a previous instruction on the plunger arrangement for the 25 HP Synchromesh. | ||
| View original record | By. from Hs/Gry. X 5310. Hs/Gry.1/AD6.2.32. 25 HP. SYNCHROMESH. Will you please cancel our Hs/Gry.7/MA1.2.32. The six plungers should be divided into two rows of 3, the rows being staggered. The… | ||
| scan0103 | Solution for gear rattles on the 25 HP model by adding a friction damper. | ||
| View original record | Ro R. from Hs. C. C. WOT. C. E. De. S. Ev. Ed. YS310 X.634. X.5310. Hs.5/AD24.2.32. 25- HP. GEAR RATTLES We have reported in our Hs/GTY.2/MAL5.2.32 that we have been able to overcome gear rattles on… | ||
| scan0104 | Future of gearboxes, considering synchro-mesh and helical gears. | ||
| View original record | X5310. To Sg. From Hs. c. to Wor. c. to E. Hs.3/MJ.27.2.32. X7310 GEARBOXES. Referring to your note on easy change gearboxes, it is time now that we considered what is to be the next move on… | ||
| scan0105 | Different schemes and considerations for a silent gearbox design. | ||
| View original record | E. From Hs/Gry. c. to Da. c. to Ry. X5310 X7310 HS/Gry.1/MA.S. 3. 3. 32. GEAR BOXES. Hs. has suggested the future possibility of a silent easy change 2nd gear. In connection with this there are… | ||
| scan0106 | Schematic diagrams of a gearbox layout, gear engagement, and ratios. | ||
| View original record | FIG II ENGINE PROP SHAFT 1ST 2ND 3RD CM No GEARS TURNING WITH ENGINE IDLING FIG I ENGINE PROP SHAFT 41 19 A 27 33 B 35 25 C X Y TOP BC 1:1 X TO RIGHT Y TO LEFT 3RD 1.3:1 " RIGHT 2ND AB 2.0:1 LEFT LEFT… | ||
| scan0107 | On overcoming noisy engine gears and arranging production of new gears similar to helical gears. | ||
| View original record | SECRET. YS 310. To R. From Hs. c. to Sg. c. to Nor. c. to Da. By. J.J. Hs.2/MJ.9.3.32. The trouble with the noisy engine gears on this engine has now been entirely overcome. The amount of engine gear… | ||
| scan0108 | Query regarding the synchro-mesh gearbox and silent third gear on the last 20 20/25 HP 'T' Series chassis. | ||
| View original record | X5310. S/W. re- 20/25 h.p.Chassis - Last 20 in "T" Series. Cx7/KW6.4.32. With regard to these chassis having the synchro-mesh gearbox, would you please let me know whether they will also have the… | ||
| scan0109 | Confirming the successful testing of silent third speed on production chassis fitted with synchro-mesh. | ||
| View original record | γ 5310 To Cx. From Hs. Hs.1/MJ.9.4.32. Replying to Cx.7/KW.6.4.32. All cars with the synchro-mesh will have silent third speed. The production chassis which are now on test are coming out very well… | ||
| scan0110 | Standard cure for rattles and booms in the transmission. | ||
| View original record | To E. From Hs/Rm. c. to Hd. c. to Wor. X5310 Hs/Rm,2/MJ.19.4.32. RATTLES IN THE TRANSMISSION. The Repair Dept. have put a second customer's car up to us where the owner has complained of booms and… | ||
| scan0111 | Internal memorandum regarding the investigation and proposed solutions for transmission vibration in the 20/25 model. | ||
| View original record | 5310 To R. From Hs. E. Da. c. to Sr. Jer. Rg. c. to PN. EP. 20/25 - TRANSMISSION VIBRATION. Replying to R.1/WL.4.4.32. A considerable amount of experimental work has been done in connection with this… | ||
| scan0112 | Development of a full synchromesh gearbox to remain competitive against other manufacturers. | ||
| View original record | X5310 To R. from Sg. Copy to Wor. E. Hs. re Synchromesh Gearbox. Sg6/E19.4.32. Your are doubtless aware of the competition in connection with easy change gearboxes, one of the chief illustrations of… | ||
| scan0113 | Proposal to modify the dynamometer test for the 20/25HP Synchro Mesh chassis by increasing engine r.p.m and removing the third gear run. | ||
| View original record | X5310. Hs from Mx. Mx9/T20.4.32. re 20/25HP. 181st in 'T' and onwards. (Synchro Mesh) The improved performance of this type of Chassis has made it necessary to increase the engine r.p.m. from 3000 to… | ||
| scan0114 | Difficulty of engaging first gear in the synchro-mesh gearbox. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to FN. c. to E. x5310 x7310.- SYNCHRO-MESH GEARBOX. One of the criticisms against the present synchro-mesh gearbox 25 HP. and P.2, is that it is very difficult to get… | ||
| scan0115 | Standardisation of a rear brake equalising shaft to suit a synchro mesh gearbox. | ||
| View original record | RR 755 (10H) (19120, 13-10-31) BM. 3/7586. X5310, COMPLETED 20.4.32. STANDARDISATION of CHASSIS PARTS. Date 8.1.32. Description of Parts. REAR BRAKE EQUALISING SHAFT TO SUIT SYNCHRO MESH GEARBOX.… | ||
| scan0116 | Standardisation sheet detailing the fitting of a new part to a specific chassis. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted....... 181 in 'T'. Date when chassis will be handed to test..... 19.3.32. Cost of scrapped… | ||
| scan0117 | Transmission vibration issues, specifically 'Coronation Rattles', in the 20/25 and Silver Ghost models. | ||
| View original record | Hs. E. Da. C. R. Wor. Sg. x 5310 EPL0/H21.4.32. X.634 X.5310 re. 20/25 - TRANSMISSION VIBRATION. With reference to R1/M14.4.32, my recollection of the "Coronation Rattles" is that they were cured by… | ||
| scan0118 | Troubles with a 20/25 HP Synchromesh Gearbox and questioning the extent of its original testing. | ||
| View original record | HP 24/4/32 XS310 To Hs. from Sg. re 20/25 HP Synchromesh Gearbox. Sg5/E28.4.32 Copy to Wor. Arising out of our discussion yesterday and the troubles from which production is suffering in regard to… | ||
| scan0119 | Decision not to proceed with a Synchromesh Gearbox on certain new models. | ||
| View original record | Copy. X5310 x7310. To R. from Sg. Copy to Wor. Copy to Hs. Copy to PN. re Synchromesh Gearbox. Sg10/E28.4.32. With further reference to Sg14/E21.4.32 and the question of the importance of changing… | ||
| scan0120 | The history, testing, and known faults of the 20/25 HP synchro-mesh gearbox. | ||
| View original record | To Sg. From Hs. c. to Wor. 85310 Hs.5/MJ.29.4.32. 20/25 HP. SYNCHRO-MESH GEARBOX. Replying to Sg.5/E28.4.32. The history of the 25 HP. synchro-mesh box is as follows :- 18-G4. car which ran 10,000… | ||
| scan0121 | Gearbox faults and the lengthy development and testing timeline for new designs. | ||
| View original record | -2- If the gear comes out it does no harm, and it goes back quite easily. It is nothing like so bad as the complaint we have had on the pre-synchro-mesh 20 HP. box when there were a number of cases of… | ||
| scan0122 | Telegram regarding issues with synchromesh, gearboxes, and servo mechanisms. | ||
| View original record | Handwritten top center: x5310. Handwritten top right: x634 x7310. To E. From Sg. Copy to Wor. Hs. BY. FOR DA. re. Synchromesh. Sg13/E2.5.32. I have received a telegram from R. which reads asfollows :… | ||
| scan0123 | Requesting a recommendation and a meeting to discuss a telegram regarding transmission vibration and a gearbox damper. | ||
| View original record | To E. From Sg. Sg13/E2.5.32. -2- I should like to have your recommendation on this. The last part of the telegram about transmission vibration presumably refers to correspondence with Hs. relative to… | ||
| scan0124 | Performance, testing, and production issues of the 20/25 HP Synchromesh Gearbox. | ||
| View original record | Hs 85310 To Hs. from Sg. re 20/25 HP Synchromesh Gearbox. Copy to Wor. I am in receipt of Hs.5/MJ.29.4.32 and note information given. When writing to you the other day I was under the impression that… | ||
| scan0125 | The issue of the 3rd gear disengaging in the 25HP Synchromesh gearbox and the recommended solution. | ||
| View original record | R. From HS/Gry. c. to SS. Nor. c. to L. Da. c. to Hy. 85310 HS/Gry.1/MA.S. 5. 32. 25HP. SYNCHROMECH. 3rd. GEAR COMING OUT OF MESH. This trouble has occurred on a large proportion of cars on production… | ||
| scan0126 | Blueprint illustrating three positions of a 20/25 Synchromesh sliding piece and related gear engagement issues. | ||
| View original record | 20/25 SYNCHROMESH (1) TOP DRIVE (2) DRIVE 3RD (3) DRIVE IN 3RD DRIVE IN TOP 1. TOP GEAR COMES OUT OF MESH 2. 3RD GEAR COMES OUT OF MESH 3. NEITHER GEAR WORKS OUT TYPES OF TOP AND 3RD GEAR SLIDING… | ||
| scan0127 | The 20/25 HP Synchro Mesh Gear Box. | ||
| View original record | from Wor. Hs. from Wor. X5310. Wor3/T4.5.32. Re 20/25 HP Synchro Mesh Gear Box. I passed Hs' memo reference Hs5/MJ29.4.32 to Mx. for his information, and attach hereto copy of report received from Mx.… | ||
| scan0128 | Testing, faults, and modifications for the 20/25 HP Synchro Mesh Gear Box. | ||
| View original record | Copy. Wor. from Mx. Mx17/T3.5.32. 20/25 HP SYNCHRO MESH GEAR BOX. I have read memo Hs5/MJ29.4.32 with considerable interest. I do not agree, and never have agreed with any form of "Trick" testing. It… | ||
| scan0129 | Gearbox improvements, including synchromesh issues, reverse gear problems, and lengthening gearboxes for various models. | ||
| View original record | Y 5310. To Wor. from Sg. Copy to E. Hs. BY. WW for DA. re. Synchromesh etc. Sg13/E4.5.32 ------------------------------------------------------ Referring to Sg13/E2.5.32 giving particulars of x 7310.… | ||
| scan0130 | Telegram about the implementation of synchromesh and clutch brakes on gearboxes. | ||
| View original record | X5310. To E. from Sg. Copy to Wor. Hs. re Synchromesh. Sg13/E6.5.32. X5310 X7480 In a telegram received from R. he says: "Difficult to have both synchromesh and clutch brake must allow latter to… | ||
| scan0131 | Instruction to add an air release hole to the synchromesh 3rd and 4th sliding piece. | ||
| View original record | By. From Hs/Gry. x5310. Hs/Gry.1/MA.6.5.32. SYNCHROMESH. x7310. We think there should be an air release hole in both rows of plunger holes in the 3rd and 4th sliding piece. Will you please instruct… | ||
| scan0132 | Cause of transmission rattles, with tests related to crankshaft dampers and torsional periods. | ||
| View original record | X5310. x634. R. From Ha/Gry. c. to DS. c. to MOT. c. to Ds. c. to EV. Ha/Gry.1/MA.7. 5. 32. TRANSMISSION RATTLES. Replying to your R.4/M.2.3.32., we do not think that the overrun gear rattles is due… | ||
| scan0133 | Use of a clutch brake with a synchromesh gearbox on the 20/25 and Phantom II models. | ||
| View original record | X 5310 Sg. from E. c. Wor. Hs. E.1/HP.7.5.32. X7310. X7480. re Synchromesh - Sg.13/E.6.5.32. We do not use a clutch brake on the 20/25 and on P.II we propose dropping the brake when synchromesh is… | ||
| scan0134 | Performance and development of the synchro-mesh gearbox, comparing the 25 HP and Phantom II models. | ||
| View original record | To R. From Hs. c. to Sk. Wor. c. to E. Da. c. to Sy. 85310 Hs.5/MJ.7.5.32. SYNCHRO-MESH GEARBOX. x7310 On the 25 HP. the synchro-mesh part works very much better than any other car we have tried which… | ||
| scan0135 | Issues and solutions for engaging gears from a standstill on a synchromesh gearbox, referencing car 19-EX. | ||
| View original record | X5310 To HS. from Sg. Copy to Wor. E. PN. re Synchromesh and Clutch Brake. Sg2/E20.5.32. X.7310 X.5310 X.7480 Referring to HS.4/MJ.11.5.32. I did not write anything further about this at the time… | ||
| scan0136 | Technical memo discussing transmission vibration issues, its potential causes, and proposed solutions. | ||
| View original record | HS. E.) FROM R. DA. ) (At Le Canadel.) RL/M14.4.32. Sent from WW. 13.4.32. C. to SG. WOR. RG. C. to PN. EP. 20/25 - TRANSMISSION VIBRATION. X.5310 X.634 You send a design of a friction damper to be… | ||
| scan0137 | Typed note discussing the undesirability of a proposed damper for various car models. | ||
| View original record | -2- Has anything happened to alter the prop: shaft or couplings or spoil the alignment. One imagines we have not altered the inertia of the pistons or the flywheel, so the percentage varation of… | ||
| scan0138 | With diagrams discussing the design and mechanics of a reverse pinion and gear ratios for a gearbox. | ||
| View original record | X 5310 DA/HDY. E. } FROM R. HS. BY. } (At Le Canadel.) R3/M2.5.32. Sent from WW. 5.5.32. C. to SG. WOR. GEARBOXES - ALL SIZES - X. 7310 ALSO PEREGRINE & BENSPORT. X. 5310 X. 4553 X. 4027. REVERSE… | ||
| scan0139 | Reverse pinions, jaw clutches, and a proposed design for a hub and sleeve assembly with a diagram. | ||
| View original record | E. DA. HS }FROM. R. (At LE Canadel.) C. to SG. WOR. BY. BENSPORT & OTHER GEARBOXES. X5310 R6/M115.32. Rec'd and despatched from WW. 20.5.32. X. 7310 X. 5510 X. 4553 Reverse pinions I agree can be of… | ||
| scan0140 | Design modifications for the Phantom II - 20-HP Synchromesh to fix two known faults. | ||
| View original record | X S 310. BY. C. HS. c. to Sft/Mr. Mathews. E/JNR.2/HP.27.5.32. X7310. Phantom II - 20-HP. Synchromesh. -------------------------- We send you herewith Lec.3106. We have prepared this design to… | ||
| scan0141 | Design of the Bensport head and progress on the J.3. and Bensport gearboxes. | ||
| View original record | X5310 E. FROM R. RL/Ms1.5.32. X.4553 X.5310 C. to SG. WOR. re BENSPORT HEAD. C. to DA. BY. HS. J.3. & BENSPORT GEARBOXES. I think your latest suggestion is the best - i.e. all bends looking one way,… | ||
| scan0142 | The testing of a reverse shaft for P.2 and 25-HP models and potential gearbox modifications. | ||
| View original record | X 5310 E.1/HP.27.6.32. To BY. from E. c. Sg. Wor. Hs. Hdy. re. P. 2. and 25-HP. Reverse. We are sending you herewith N.sch.3492 showing the above, received from West Wittering this morning, together… | ||
| scan0143 | Customer and test complaints for the New 25-HP Synchro Mesh Car. | ||
| View original record | Hs. RV C. Wors X5310. EP15/Hl.7.32. re. New 25-HP. Synchro Mesh Complete Car Deliveries. As discussed with you yesterday, we have delivered about 8 of these chassis, and the following complaints we… | ||
| scan0144 | Inquiry regarding the chassis or gearbox numbers fitted with new third motion shafts for the 20/25HP Synchro Mesh programme. | ||
| View original record | Handwritten top: Hs/Lid? R.H.C LID V 5310. Typed reference: Mx/LA/Skn8/T1.7.32. re 20/25HP Chassis - Synchro Mesh Gear Boxes. Will you please let us know the chassis or gear box numbers to which you… | ||
| scan0145 | Listing specific 20/25 HP chassis and synchro-mesh gearboxes fitted with G.55561 third motion shafts. | ||
| View original record | f5310. To Mx/LA/Skn. From Hs/Lid. Hs/Lid.1/MJ.2.7.32. 20/25 HP. Chassis - Synchro-Mesh Gearboxes. Replying to Mx/LA/Skn.8/Tl.7.32. RHC. states that the following gearboxes were fitted with G.55561… | ||
| scan0146 | Standardisation of chassis parts for a Synchro Mesh Gearbox to the latest modifications. | ||
| View original record | RR 755 (10H) (B459. 24-10-30) 6/3185. COMPLETED 18.7.32. X5310, STANDARDISATION of CHASSIS PARTS. Date 5.1.32. Description of Parts. SYNCHRO MESH GEARBOX. - TO LATEST MODIFICATIONS. G.P.L.D. Origin.… | ||
| scan0147 | The standardization of chassis parts, including the first chassis number, test date, and associated costs. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS Date X.3.32. The number of the first chassis on which the new parts will be fitted............. 181 in 'T' Date when chassis will be handed to test...... 19.3.32. Cost… | ||
| scan0148 | Analysis of transmission and engine vibrations, focusing on torsional crankshaft deflection and damping methods. | ||
| View original record | [Handwritten at top: X 5310] HS. E. ) FROM R. DA. BY. ) (At Le Canadel. R4/M2.5.32. Sent from WW. 5.5.32. C. to SG. WOR. RG. EP. X. 5310 X. 534. TRANSMISSION & OTHER VIBRATIONS. ("HEREIN LIES A TALE")… | ||
| scan0149 | Technical note regarding engine and transmission vibration experienced on the 25HP model. | ||
| View original record | and a reaction upon the engine mass, causing the whole car and frame to vibrate, as was experienced with P. 2. when it sandwiched feet. It also results in a tendency to put the transmission in a state… | ||
| scan0150 | Cause of transmission rattle and proposing a rubber block drive as a potential solution. | ||
| View original record | HS. FROM R. X5310 R3/M24.5.32. C. to SG. WOR. C. to E. DA. BY. TRANSMISSION RATTLE. X.5310 X.634. I understand from E. that it has now been demonstrated that this has nothing to do with the half… | ||
| scan0151 | Page 2 of a memo discussing a friction-damped spring coupling in the transmission, referencing the Silver Ghost model. | ||
| View original record | -2- all our cars, XXX made, or to be made. EP. pointed out in a memo. to me that in the Silver Ghost days we fitted a spring coupling between the flywheel and gearbox, and which was friction damped.… | ||
| scan0152 | Gearboxes and the issue of creeping gears on splines. | ||
| View original record | HS. ) FROM R. DA. ) C. to SG. WOR. C. to BY. E. GEARBOXES. CREEPING GEARS. X.5310. X.7310. It will be remembered, that we patented several means of keeping the gears still on the shaft. In our schemes… | ||
| scan0153 | Testing of synchronous mesh gears and the issue of gear creep under load. | ||
| View original record | -2- As regards the synchronous mesh gears I have written in another memo. that these should be tested as worn gears with slack before we can rely upon their driving sleeves not creeping in or out.… | ||
| scan0154 | Proposed 25-HP torsionally flexible joint and Hardy fabric coupling for the transmission. | ||
| View original record | X5310 BY. FROM DA. C. to SG. HS. E. DAL/M4.6.32. 25-HP. TORSIONALLY FLEXIBLE JOINT IN TRANSMISSION. X.5310 X.634 Herewith we send N. sch. 3482. shewing the proposed torsionally flexible joint behind… | ||
| scan0155 | Testing of a 25 HP Hardy fabric coupling behind the gearbox to eliminate 'Coronation Rattles'. | ||
| View original record | X5310 BY. FROM DA. C. to SG. WOR. E. HS. DAL/M9.6.32. 25 HP. HARDY FABRIC COUPLING B EHIND GEARBOX. We send herewith N. sch. 3484. shewing the Phantom fabric coupling applied to the rear of the 25 HP.… | ||
| scan0156 | Proposed modification to the reverse gears for the 20/25 HP and Phantom II models. | ||
| View original record | Y5310. X.7310. X.5310. To Hdy. from E. c. R. Sg. Wor. Hs. By. Da. E.4/HP.17.6.32. Reverse Gears on 20/25 HP. and P.II As mentioned to Sir Henry this afternoon on the telephone, we are sending you… | ||
| scan0157 | Technical memorandum discussing design considerations for the P. 2 & 25HP reverse gear system. | ||
| View original record | X5310 E. ) HS. ) FROM R. R2/M23.6.32. C. to SG. WOR. BY. re. P. 2. & 25HP. REVERSE. X+7310 X.5310 We think there is too much of the three bearing scheme, as well as some undesirable features, in the… | ||
| scan0158 | Modifications to the gear control due to heaviness and high spring load on the reverse stop. | ||
| View original record | X5310 HS. ) FROM HDY BY ) HDY1/M25.6.32. C. to SG. WOR. E. DA. GEAR CONTROL. X.5310 X.7310 X.4027 R. has criticised the gear control on the 25 HP. car here - 16.G.IV on the score of undue heaviness of… | ||
| scan0159 | Discussion concerning the design and specifications for a gear lever reverse stop spring. | ||
| View original record | X5310 BY. FROM HDY. HDY1/M19.7.32. C. to R. SG. WOR. C. to HS. E. DA. GEAR LEVER. REVERSE STOP SPRING. X7310 X5310 X4027 Replying to By4/G28632, we find we have a print of the new spring G.55577… | ||
| scan0160 | Successful testing of a new reverse gear design for the 20/25 HP model. | ||
| View original record | X5310 To R. from Hs/Gry. c. to SS. Wor. c. to E. Da. c. to By. Ha/Gry.2/KT.12.8.32. REVERSE GEAR 20/25 HP. We have now tested a gearbox with a reverse gear to N.sch.3492. With this arrangement a… | ||
| scan0161 | Modifications to the gear lever shaft for the 25HP model to prevent binding and reduce oil drag. | ||
| View original record | X 5310 BY. FROM HDY. HDY.1/M.13.8.32. C. to SG. WOR. E. C. to HS. DA. GEAR CONTROL. X 7310 X 4027 We send herewith N.sch.3498., which shews modifications to the gear lever shaft for the 25HP. to… | ||
| scan0162 | Inquiring about the travel of the reverse shaft on the 20/25 model to ascertain gear overlap. | ||
| View original record | X5310 HS. FROM HDY. HDY2/M22.8.32. C. to E. BY. REVERSE GEAR - 20/25. With reference to the favourable report - HS/GRY2/KT12832 - on the reverse shaft to N. scheme 3492, we should like to know whether… | ||
| scan0163 | The results of a test on a 20/25 reverse gear and subsequent alterations. | ||
| View original record | X5310 To Hdy. from Hs/Gry. Hs/Gry.1/KT. 26.8.32. REVERSE GEAR 20/25 Replying to Hdy2/M22.8.32, this test was carried out with the former narrow gears and a travel of .975 We have not tried the wider… | ||
| scan0164 | Tolerances for ball bearings on the 3rd motion shaft of the 25 HP & Peregrine gearbox. | ||
| View original record | (X5310) BY. FROM HDY. HDY1/M6. 9.32. C. to SG. WOR. RG. C. to E. DA. HS. RHC. 25 HP. & PEREGRINE GEARBOX. X.5310. X.4027. R. has remarked that instead of using the close limits of plus or minus… | ||
| scan0165 | Design of future gearboxes, focusing on achieving a silent helical second speed. | ||
| View original record | X8310 To R. from Hs. c. Sg. Wor. c. E. Da. c. By. Hdy. ------------------- GEARBOXES. We have previously pointed out that we consider in the design of future gearboxes we ought to arrange for a… | ||
| scan0166 | Gearbox noise issues and considering helical gears over synchromesh for the second gear. | ||
| View original record | X25310 HS. FROM R. R2/ML2.9.32. Sent off 15.9.32. C. to SG. WOR. BY. DA. E. HDY. X.7310. X.5310. GEARBOX - SYNCHROMESH & HELICAL SECOND. While at Le Canadel we were struck with the noise of the 2nd.… | ||
| scan0167 | Ball bearing fits and interference limits for 25 HP & Peregrine gearboxes. | ||
| View original record | Hdy. (WW). X5310 BY.8/G.12.9.32. (X402) BALL BEARING FITS. 25 HP. & PEREGRINE GEARBOXES. Referring to HDY.1/M.6.9.32. the fine limit on the shaft diameter where the ball bearing is seated is not due… | ||
| scan0168 | Interference fit tolerances for an assembly involving bearings and gears on a threaded shaft. | ||
| View original record | - 2 - BY.8/G.12.9.32. some positive interference fit, that is we must not be below size and size, otherwise as the parts are secured by locking through a series of five parts i.e. two bearings and… | ||
| scan0169 | Design disagreement regarding the silent 2nd gearbox and the placement of the freewheel and jaw clutch. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. E. GEARBOXES. Regarding the silent 2nd, HS. and myself are not quite in agreement as to the better place to put the freewheel and jaw clutch - that is - whether on the… | ||
| scan0170 | Design of the helical second gear for the 25HP gearbox. | ||
| View original record | X5310. RHC. From Hs/Gry. Hs/Gry.2/MA.6.10.32. HELICAL 2nd. GEAR - 25HP. With regard to the box Hs. has asked you to build up we find that the 2nd. speed gears can be the constant mesh gears reversed… | ||
| scan0171 | Customer complaints of 'back lash' noise in Synchro Mesh Gear Boxes for the 20/25HP & Phantom II models. | ||
| View original record | 85310 Hs. c. BY. c. Wor. c. EP. from Mx. Mx.2/T3.11.32. SYNCHRO MESH GEAR BOXES X 5310 20/25HP & PHANTOM II. X 7310 We are having to deal with some criticism and also complaints from customers of the… | ||
| scan0172 | Adjusting gearbox clearances for a J.2 model to resolve transmission noise complaints. | ||
| View original record | 85310. RHC. From Hs/Gry. Hs/Gry.11/MA.17.11.32. GEARBOX FOR J.2. On the gearbox that is to be fitted to 1. J.III for France will you please see that the clearance between the synchromesh cam and the… | ||
| scan0173 | Gearbox options, comparing synchro-mesh, silent second speed, and the Wilson gearbox, with a recommendation to adopt a silent second speed. | ||
| View original record | X5310 To R. From Hs. c. to Sg. c. to Wer. c. to E. c. to Da. c. to By. c. to Hdy. GEARBOXES. We are now delivering cars fitted with a synchro-mesh box and silent third speed. Customers are delighted… | ||
| scan0174 | Gearbox requirements, specifically the need for a synchro-mesh second speed and consideration of the epicyclic gear. | ||
| View original record | -2- Hs.4/WJ.22.11.32. Cont'd. Our silent second speed on the present gearbox would satisfy us for a period, conditions will then demand that we shall have a synchro-mesh second speed. Also, of course,… | ||
| scan0175 | Introducing a silent helical second gear and a modified reverse gear into the standard gearbox for all cars. | ||
| View original record | X5310 To By. From Hs/Gry. Hs/Gry.15/MJ.28.11.32. HELICAL SECOND GEAR - ALL CARS. X5310 We are sending you the arrangement drawings of how we have introduced a silent 2nd. gear into the standard… | ||
| scan0176 | Schedule N.Sch.3633 for a helical second speed gear for the 20/25 J.II and J.III models. | ||
| View original record | To: [redacted] from HDY. c.c. [redacted] Hs. [redacted] 85310. HDY16/N.9.1.33. Helical 2nd.Speed - 20/25. J.II and J.III. ------------------------------------------ Herewith N.Sch.3633 which shows a… | ||
| scan0177 | Standardisation report for a chassis reverse gear to overcome difficulty engaging first gear. | ||
| View original record | RR 755 (10H) (30405, 21-32) BM. 3/8382/4. COMPLETED X5310. 26/1/33. STANDARDISATION of CHASSIS PARTS. Date 6.9.32. X No. 5310 Drawing No. Part List Description of Parts. REVERSE GEAR TO CL.599.… | ||
| scan0178 | Standardisation form for a Sump Case, detailing the origin of the change, test results, costs, and implementation schedule. | ||
| View original record | STANDARDISATION of CHASSIS PARTS S.P.25. Date 25.9.32. Reference No. X .0123 Drawing No. Description of Parts: SUMP CASE TO GO.99. Origin: To overcome difficulty of engaging 1st & reverse gears if… | ||
| scan0179 | Transmission slack in compound epicyclic gears and potential design solutions. | ||
| View original record | VY Cup HS. FROM HDY. HDY1/M28.1.33. X. 7640. X. 5640. COMPOUND EPICYCLIC GEARS. When the top gear is obtained by means of clutch at the forward end of the gears, as on the Wilson, and as proposed by… | ||
| scan0180 | Epicyclic gearing, comparing transmission slack and noise in Lanchester and Armstrong Siddeley cars. | ||
| View original record | X 5640 To Hdy. From Hs/Gry. Hs/Gry.4/MJ.3.2.33. 7660 EPICYCLIC GEARING. Hdy.1/M28.1.33. In order to find the amount of slack in the transmission caused by the Wilson gearbox we tried both our… | ||
| scan0181 | Standardisation of a modified 3rd motion shaft for the 25HP synchromesh gearbox to prevent 3rd gear disengagement on overrun. | ||
| View original record | RR 755 (10H) (19120, 13-10-31) BM. 3/7586. X5310 COMPLETED 3.2.33. STANDARDISATION of CHASSIS PARTS. Date 10.5.32. Description of Parts. 3rd MOTION SHAFT 25HP SYNCHROMESH GEARBOX. X No. 5310 Drawing… | ||
| scan0182 | Implementation of a new part onto a chassis, including associated costs. | ||
| View original record | CHASSIS PARTS STANDARDISATION The number of the first chassis on which the new part will be fitted................. As soon as available. Date when chassis will be handed to test. ..... Cost of… | ||
| scan0183 | Seizures of 3rd speed wheel bearings and potential lubrication improvements. | ||
| View original record | X 5310 HS. FROM HDY. HDY2/M25.1.33. 3rd. SPEED WHEEL SEIZURES. ----------------------- X. 7310. X. 5310. With regard to your recent remark on the telephone that there had been a number of seizures of… | ||
| scan0184 | Experiments conducted to resolve gearbox over-run rattles using a slipper flywheel on a specific car. | ||
| View original record | FILES. Y5310 4.2.33. GEARBOX. OVER-RUN RATTLES. ON B.HOPP'S ESQ' CAR. This car has a slipper flywheel of 50 lbs.in2 inertia, fitted at the rear of the gearbox, and we have carried out a series of… | ||
| scan0185 | Confirming a request to build up a new change speed mechanism for the 20/25 gearbox. | ||
| View original record | X 5310 RHC. from Hs/Gry. Hs/Gry.5/KT. 8.3.33. 20/25 GEARBOX. This is to confirm our asking you to build up a change speed mechanism to the latest design, incorporating a spherical bearing for the… | ||
| scan0186 | Results of testing helical second speed gears on Peregrine, 20/25, and 40/50 chassis. | ||
| View original record | X5319 R. from Hs/Gry. c. Sg. Wor. c. E. Hy. c. Da. Hs/Gry.2/KT.25.3.33. HELICAL 2nd SPEEDS. We have now tested the W.W. designs of silent 2nd. gear on Peregrine, 20/25, and 40/50. On all three chassis… | ||
| scan0187 | Request to test the volumetric efficiency of a gear type pump for gearbox control. | ||
| View original record | A5310. HS. FROM HDY. HDY3/M27.3.33. C. to SG. WOR. E. DA. BY. GEARBOX CONTROL. R. has suggested that high pressure oil should be used for the control of the proposed epicyclic gear in order that the… | ||
| scan0188 | Figures taken from a badly worn gear pump tested with Castrol XL oil at 70°C. | ||
| View original record | XS310 To Hdy. From Ha/m. c. Sg. Wor. c. E. Da. c. By. Ha/Rm.2/KT.5.4.33. With reference to your HDY3/M27.3.33. We attach figures we have taken off a gear pump which we consider to be badly worn. These… | ||
| scan0189 | Gearbox control tests on a 20/25 HP oil pump using Castrol XL oil at 70°C. | ||
| View original record | GEARBOX CONTROL TESTS. TESTS TAKEN WITH 20/25 HP. OIL PUMP, .003" RADIAL .004 END CLNCES CASTROL XL. 70°C PUMP INLET TEMP. | PUMP R.P.M. | 0 lb/sq.in Press. Pts/Hr. | 100 lb/sq.in Press. Pts/Hr. | 200… | ||
| scan0190 | Graph showing the results of gearbox control tests on a 20/25 HP oil pump. | ||
| View original record | GEARBOX CONTROL TESTS TO MEMO HDY 3/M 27-3-33 TESTS TAKEN WITH 20/25 HP. OIL PUMP - .003" RADIAL - .004" END CLEARANCE CASTROL XL 70°C PUMP INLET TEMPERATURE DELIVERY PTS/HR. DELIVERY PRESS 0 LB/□"… | ||
| scan0191 | Gearbox control, discussing the results of an engine oil pump test and its unsuitability. | ||
| View original record | HS/RM. FROM HDY. C.c. to SG. WOR. E. DA. BY. GEARBOX CONTROL. We thank you for your HS/RM2/KT5433., and results of the test on an engine oil pump. It appears from these tests that the gear type of… | ||
| scan0192 | Modifications to the change gear lever mechanism. | ||
| View original record | BY. } FROM HDY. HS. } X2310 HDY1/M13.4.33. C. to SG. WOR. E. DA. MODIFICATIONS TO CHANGE GEAR LEVER. Further to our HDY1/M28.3.33. we now send N. schs. 3674/5. shich deal with the side movement of the… | ||
| scan0193 | Curve of figures required for a gearbox control system. | ||
| View original record | TO Hdy. from Hs/Rn. c.c. Sg. Wor. c.c. E. Da. c.c. By. X5360 Hs/Rn.11/KT. 20.4.33. GEARBOX CONTROL. With reference to HDY1/M8.4.33., herewith curve giving the figures you require. Hs/Rn. | ||
| scan0194 | Test results for a 20/25 oil pump's radial and end clearances at different speeds, pressures, and temperatures. | ||
| View original record | GEARBOX CONTROL TESTS. To MEMO HDY 1/M 8-4-33. FURTHER TO REPORT 3-4-33. 20/25 OIL PUMP '003 RADIAL '004" END CLEARANCES. CASTROL XL. OIL TEMP 50°C & 60°C TEMPERATURE 50°C PUMP SPEED R.P.M. | PRESS… | ||
| scan0195 | Record of gearbox control tests showing the rate of temperature rise at a specific pump speed and pressure. | ||
| View original record | GEARBOX CONTROL TESTS SHEET II The figures given in the tables were actually taken between 50 and 55°C, 60 and 65°C, and in the previous tests 70 and 75°C, owing to the difficulty of maintaining the… | ||
| scan0196 | Series of gearbox control tests plotting pump delivery rate against pump speed at various pressures and temperatures. | ||
| View original record | GEARBOX CONTROL TESTS TO MEMO HDY 11(M8-4-33) INCLUDING ALSO HDY 3/M 27-3-33 20/25 HP OIL PUMP .003 RADIAL .004 END CLEARANCES CASTROL XL. AT 50, 60 & 70 °C. DELIVERY PRESSURE 0, 100, 200 & 300 LB/SQ… | ||
| scan0197 | Performance of a synchromesh 2nd gear mechanism when tested while submerged in oil. | ||
| View original record | KS-310- To E. from Hs/Gry. c. to Da. c. to Ey. c. to Hdy. Hs/Gry.1/KT.12.6.33. SYNCHROMESH 2ND GEAR. The two alternative positions for the synchromesh mechanism on the 2nd. speed gears are on the… | ||
| scan0198 | With questions regarding roller bearings with grooves for the new J.3. gearbox. | ||
| View original record | XV210 To BY. from HDY. c. W.O.R. E.D.H. H.S. R.W.D. ---------------- HDY.1/HP.13.6.33. ---------------- Roller Bearings. --------------- With reference to our recent conversation about roller bearings… | ||
| scan0199 | Standardisation of a helical second speed gear for the 20/25 HP chassis. | ||
| View original record | RR 755 (10H) (30405. 21-4-32) BM. 3/8382/4. X5310 COMPLETED 22.7.33. 'STANDARDISATION of CHASSIS PARTS. Date 3.2.33. Description of Parts. HELICAL 2nd. SPEED 20/25 N. Sch. 3633. X No. 5310 Drawing No.… | ||
| scan0200 | Standardization report for chassis parts, detailing the first chassis fitment and associated costs. | ||
| View original record | STANDARDIZATION of CHASSIS PARTS The number of the first chassis on Which the new part will be fitted..... 51 in 'Z' Date when chassis will be handed to test............................. June 10th… | ||
| scan0201 | Gearbox for 'Japan 3', comparing ratios and design changes with existing models. | ||
| View original record | X5310. To EY. from HDY. c. For W. S. De. HHG. [Text has been struck through] Gearbox - Japan 3. We send herewith N. Sch. 3788/9/90/91, 3797, 3805/6, which we think give all the information required… | ||
| scan0202 | Technical memorandum detailing modifications to a gearbox design, including pinions, clutches, and servo placement. | ||
| View original record | - 2 - HDY.2/HP. 4.9.33. In order to save length in the box, the tops of the teeth of the 1st speed pinion are used to assist in the control of the sleeve for the 2nd speed S.M. clutch. As the pinion… | ||
| scan0203 | The design and suspension of the 'Japan 3' gearbox. | ||
| View original record | X5310 To DY. from HDY. MDY.1/HP.8.9.33. C. Por. H, Hs, Ha, NHO, Sft. COPY Gearbox - Japan 3. Herewith N. Sch's 3809,10 and 11 which shew the actuating gear, casing and suspension of the front half of… | ||
| scan0204 | Sheet metal crossmember for the rear end of a box, similar to that on the 20/25 model. | ||
| View original record | - 2 - HDY.1/HP.8.9.33. ------------ joint can be materially reduced. The rear end of the box is carried by a sheet metal crossmember similar to that used on the 20/25. HDY. | ||
| scan0205 | Schemes 3824/5/6 for gearbox modifications to improve lubrication of the servo. | ||
| View original record | K5310 To BY. from HDY. HDY.1/HP.18.9.33. C. Evernden. Hs. Platford. RHC. J.3. Gearbox. We send herewith N. Schemes 3824/5/6 which shew the dip stick, plug for layshaft gear inspection and plug for 3rd… | ||
| scan0206 | Requesting modification of an actuating piece for the J.3. Gearbox. | ||
| View original record | To BX. from HDY. c. Mr. E. Hs. Ds. UHC. + 5310 HDY.1/HP.1.11.33. J.3. Gearbox. Would you kindly modify the actuating piece on the 2nd speed slider so that it is in agreement with N. Sch. 3864… | ||
| scan0207 | The pedal arrangement for a J.3 engine with a separate gearbox, referencing scheme 3833. | ||
| View original record | X5310 To BY. from Da. c. For Mr. Hs. Hdy. Da.3/HP.6.11.33. J.3. with separate gearbox. Herewith is M. Sch. 3833 shewing arrangement of Pedals suitable for the existing engine. As the difference in… | ||
| scan0208 | Modifications needed to adapt a gearbox for the Vulture and J.3 projects. | ||
| View original record | Handwritten: Gry= By is on with fitting this gearbox to Vulture Please follow up and report progress. Pls Rm To-BY. from Da. c. Wor. E. Hs. HBY. X8310. J.3. with Separate gearbox. Herewith is N. Sch.… | ||
| scan0209 | Forwarding the scheme for a jointed coupling between the engine and gearbox for the J.3 project. | ||
| View original record | To BY. from Da. c. For E. Hs. HDY. K5310 Da.1/HP.18.11.33. J.3. with separate gearbox. We have omitted to send through the scheme of the jointed coupling between engine and gearbox, on this job.… | ||
| scan0210 | Requesting the creation of a modified gear gate to eliminate gear lever rattles on a 20/25 model. | ||
| View original record | X5310 To RHC. from Hs/Gry. Hs/Gry.18/KT.20.11.33. GEAR LEVER RATTLES. Will you please make us a gear gate to the attached Hs.1213. The gear lever should be as on the 20/25, the knob screwed on the… | ||
| scan0211 | Bracket for the J.3 model with a separate gearbox. | ||
| View original record | X5310 To DY. from Da. Da.3/HP.1.12.33. c. Wer. E. Hs. HPX J.3. with separate gearbox. We have not shown hitherto the bracket carrying the foot brake countershaft with additional boss to support the… | ||
| scan0212 | N. Sch's 3835/6 layouts of a gearbox in a chassis with an existing engine. | ||
| View original record | To EY. from Da. c. Wor. H. Ms. Hdy. tr 310 Da.1/HP.4.12.33. J.3. with existing engine. Herewith are N. Sch's 3835/6 layouts of gearbox in chassis with existing engine. You have had most of the… | ||
| scan0213 | Brake system modifications for the J.3 model with a separate gearbox. | ||
| View original record | To Bx. from Da. [Handwritten Signature] X15310 Da.1/MP.7.12.33. c. [redacted] Hs. J.3. with separate gearbox. In order to complete the instructions for this car, we have made N. Sch's 3898/9… | ||
| scan0214 | The pedal arrangement for the J.3 engine with a separate gearbox. | ||
| View original record | To EH. from Da. c. Wor. S. Hs. Hsy. XY5310 Da.4/HP.9.12.33. J.3. with separate gearbox. The attached N. Sch.3832 Pedal arrangement was done to suit the proposed modified J.3. engine, now abandoned. We… | ||
| scan0215 | Standardisation of parts for an anti-rattle change speed gear lever. | ||
| View original record | RR 785A (SH) (52674, 16-10-33) BM. 3/262/6. X5320 Completed 19.12.33 20/25 STANDARDISATION of PARTS. Date 2.11.33. Description of Parts. ANTI RATTLE CHANGE SPEED GEAR LEVER. Origin. To prevent rattles… | ||
| scan0216 | Proposed adjustments for the Top, 3rd, and 2nd speed S.M. Cones in the J.3. Gearbox. | ||
| View original record | GRY X5310. To BY, from HDY. HDY.1/HP.27.12.33. c. Wer. H. Hs. De. NHC. J.3. Gearbox - Adjustment of Top, 3rd and 2nd speed S.M. Cones. With regard to the eccentric adjustments for these cones as shown… | ||
| scan0217 | Reduction of 2nd speed leverage in the J.3. gearbox. | ||
| View original record | GRX X5310 To BY. from HDY. HDY.2/HP.29.12.33. c. W.R. H.S. De. RHC. J.3. Gearbox - Reduction of 2nd speed Leverage. As it appears that the first J.3. box at least, will have a leverage of the 2nd… | ||
| scan0218 | Instructions for a modification to the 2nd speed dogs for Bentley, 20/25, and Phantom models. | ||
| View original record | COPY. x5310 To BY. from HDY. HDY.1/HP.2.1.34. c. Wor. E. Hs. Da. RHC. Backed off 2nd Speed Dogs. ------------------------- Will you kindly instruct for production backed off 2nd speed dogs for the… | ||
| scan0219 | Experimental changes to the J.3 Gearbox synchro-mesh components. | ||
| View original record | X5310 To BY, from HDY. HDY.1/HP.26.1.34. c. Wor, E, Hs: Da, RHC: GRT J.3. Gearbox. We should like to try a reduced angle on the 2nd speed synchro-mesh locking cam and suggest 35° as shewn on N.… | ||
| scan0220 | Introduction and progress of a second speed synchromesh gearbox. | ||
| View original record | X5310 X7310 X278 To Hs. from Sg. re Second Speed Synchromesh. Sg17/E29.1.34 Copy to Wor.E. BY.Hdy.Gr. Thanks for Hs.8/MJ.23.1.34. I of course realised when I first heard of this backing off of the… | ||
| scan0221 | Modification to the clutch and gearbox pedal control. | ||
| View original record | X5310 To BY. from HDY. c. Nor. W. Hs. Far. RHC. HDY.1/HP.23.1.34. E.N.V. Box in 20/25. GRY N. Sch.3957 herewith shows a modification to the clutch and gearbox pedal control to give the necessary… | ||
| scan0222 | The weights of Vulture, 40/50 HP, and 20/25 HP gearboxes and related components. | ||
| View original record | COPY. X5310 To Hs/Gry. from RHC/HPS. RHC/HPS.1/BE.30.1.34. We give below the weights of Vulture, 40/50 HP. and 20/25 HP. Gearboxes. Vulture Gearbox. lbs. Ozs. Less Change Gear, Servo and Governor… | ||
| scan0223 | Replying to an inquiry about the expected delivery of an E.N.V. gearbox for a 25 HP car. | ||
| View original record | To Wor. From Hs. [Handwritten] V5310 Hs.3/MJ.23.2.34. Replying to Wor.11/T.19.2.34. We expect to have a 25 HP. car fitted with an E.N.V. gearbox in about a months time. The gearbox has not yet been… | ||
| scan0224 | Query asking for a date when the E.N.V. Gear Box is likely to be running. | ||
| View original record | Hs. from Wor. GRY Wor11/T19.2.34. See my #5 I wonder if you could kindly give me a date when the E.N.V. Gear Box is likely to be running? Wor. | ||
| scan0225 | Experiments on synchro mesh clutch cones to prevent sticking by adding a screw thread and testing alternative materials. | ||
| View original record | [Handwritten top center] GRY [Handwritten top right] x5310 [Handwritten across center] See me HS To BY. from HDY. HDY.2/HP.26.2.34. c. Wor. E. Hs. Ps. NHC. Synchro mesh Clutch Cones. With reference to… | ||
| scan0226 | Alterations to the J.3. Gearbox selector shaft and 1st speed pinion for use with the 20/25 engine. | ||
| View original record | X5310 GRY To BY. from HDY. c.c. Mr. E. Hs. Dn. RHC. HDY.2/HP.28.3.34. J.3. Gearbox. When this box is used with the 20/25 engine a reduction of the travel of the gear lever into 1st speed can be made… | ||
| scan0227 | Second speed synchromesh for the 20/25 model, covering production schedules and alternative gearbox options. | ||
| View original record | X5310 HS To E. from Sg. re Second Speed Synchromesh on 20/25. Copy to Wor.Hs. Sg8/E24.4.34 I am in receipt of E6/HP.23.4.34 and note this is covered by the next 10,000 miles 20/25 for which the wide… | ||
| scan0228 | Reminder to locate a redundant Synchro Mesh Gear Box for A.V.M. Longmore's 25 HP car, with a handwritten follow-up query. | ||
| View original record | X5310 S/W. To Hs. from Lp. [Signature] Lp6/LAM.4.5.34. Just a note to remind you that you promised to let Sg. know if you had a redundant Synchro Mesh Gear Box and if same could be easily fitted to… | ||
| scan0229 | Fitting a Synchro Mesh cast iron gearbox to Longmore's 25 HP car, model GTR-3. | ||
| View original record | X5310 Lp. From Hs/Rm. Hs/Rm.7/MA.11.5.34. Longmore's 25 HP. Car No.GTR-3. We have a Synchro Mesh cast iron gear box which could be fitted to this car. To fit any synchro mesh box to an old 20/25 it is… | ||
| scan0230 | Standardisation of parts for Alternate Second Speed Gear Dogs, backed off. | ||
| View original record | RR 755A (SH) (52674, 16-10-33) BM. 3/262/6. COMPLETED 21.6.34. 20/25 STANDARDISATION of PARTS. Date: 1-6-34, 27.4.34. X No. 5310. Drawing No. Part List Description of Parts: ALTERNATE SECOND SPEED… | ||
| scan0231 | Estimated cost for extra jigs, tools, and equipment for the 'F2' series chassis production. | ||
| View original record | Est. cost of extra jigs, tools and equipment.(Sft/Ws.29.5.34). £6.0.0. Could be brought on to production at 1st chassis in 'F2' series. (Sft/GH.29.5.34) without scrap. | ||
| scan0232 | Standardisation of a pressed steel change gear gate. | ||
| View original record | RR 755A SH (52674. 16-10-33) BM. 3/262/6. COMPLETED 21.6.34. 20/25 STANDARDISATION OF PARTS. Date 27.4.34. Handwritten date: 5-6-34 Description of Parts: PRESSED STEEL CHANGE GEAR GATE. X No. 5320.… | ||
| scan0233 | Cost estimate and production note for jigs, tools, and equipment for the 'F2' series chassis. | ||
| View original record | Est. cost of extra jigs, tools and equipment.(Sft/Ws.29.5.34). £60.0.0. Could be brought on to production at 1st chassis in 'F2' series. (Sft/GH.29.5.34) without scrap. | ||
| scan0234 | Causes of and potential solutions for gear lever rattles. | ||
| View original record | X5310 To E. c. to Wor. c. to By. c. to Da. c. to Hdy. c. to Lx . He/Gry.7/KM.23.7.34. Gear Lever Rattles. Rattles from the gear lever during torque reaction and at high engine speeds are still… | ||
| scan0235 | Patent application for a scheme to prevent gearbox synchromesh rattles. | ||
| View original record | X5310 To BY/NW. from HDY. c. Wgr. Wcr. E. HS. Der. HDY.2/HP.25.7.34. Gearbox Synchromesh Rattles. In confirmation of my conversation with you the other day, will you kindly apply for a provisional… | ||
| scan0236 | Locating plunger to prevent synchromesh parts rattling in gearbox. | ||
| View original record | RR 785A (SH) (57394. 30-1-34) SM 3/787/1. COMPLETED 26.9.34. 20/25 STANDARDISATION of PARTS. Date 6-9-34 21.8.34. X No. 5310. Drawing No. Part List Description of Parts. LOCATING PLUNGER TO PREVENT… | ||
| scan0237 | Note regarding tool costs and production feasibility for the 'F.2' series chassis. | ||
| View original record | Tool cost included under Std. sheet X.No.228. Could be brought on to production at 76th chassis in "F.2" series (Sft/GH.3.9.34) without scrap. | ||
| scan0238 | Confirming the elimination of an oil leak from the speedometer drive on a 20/25HP model following a modification. | ||
| View original record | X5310 H.M. O.D. D.Y. C. Hs. O.Pe. O.FHO O.Worc. O.Hu. from Mx. Mx23/T15.10.34. OIL LEAK FROM SPEEDOMETER DRIVE WHEN GOVERNOR UNIT IS FITTED - 20/25HP. We have tried out the recommendations contained… | ||
| scan0239 | Merits of central change versus side change for gear and brake levers. | ||
| View original record | X5310 HS To E. from Eg. Copy to Wor.Hs.HY. C.Ex.Em. Re Change gear and brake Levers. Sg11/E15.11.34 Arising out of certain criticisms in regard to the means of exit and entrance to the front seat from… | ||
| scan0240 | Disadvantages of side change gear levers on driver comfort. | ||
| View original record | To E. from Sg. Sg11/E15.11.34 - 2 - Another disadvantage of side change levers is that, in order to give reasonable room, the gear lever has to be kept as far back as possible, which in turn… | ||
| scan0241 | Causes of 'chunking' in gearboxes and comparing them with American design principles. | ||
| View original record | To E. From Hs/GWH. C. to By. C. to WOr. x 5310 Hs/GWH.19/KW.14.3.35. Gearbox. Causes of Chunking in the Drive. We are more prone to chunking in our transmission of the gearbox than the American cars… | ||
| scan0242 | Instruction to replace a car's Wilson gearbox and update the engine mountings and pedals. | ||
| View original record | To RHC. 4528 Hs/Rm.10/KW.2.4.35. 18-G-IV. Will you please remove the Wilson gearbox from this car and replace it with a standard Rolls-Royce box. At the same time will you please fit the latest rubber… | ||
| scan0243 | Modifications for an isolated gear lever for 20/25 models, specifically for Bentley metal floorboards. | ||
| View original record | Handwritten: 4526 R F.J.H. Your comments please? Rm Typed: To DY. Copy to Mr. H. Hs. Mr. Hde. ISOLATED GEAR LEVER. 20/25., N.Sch.4474 herewith shows the above. The bearings which carry the gear lever… | ||
| scan0244 | Sending a finished design drawing for the 20/25 HP floorboards and isolated gear change mechanism. | ||
| View original record | X528 To BY. from E/Lid. c. Wor. Hs. RHC. E/Lid.1/HP.27.5.35. 20/25 HP. Floorboards and Isolated Change Gear Mechanism. We send you herewith:- LeC.4499 - showing the finished design for the Gas-tight… | ||
| scan0245 | Chronological log of design modifications and key dates for the 'Change Speed Mechanism'. | ||
| View original record | To Hs. (Handwritten: X328) Hs/Gry.18/KW.4.7.35. Change Speed Mechanism Original Ex.8727 knob fitted to 19-EX in 24.6.32. Design received to N.Sch.3760 for Bentley 29.6.33) First tried Design modified… | ||
| scan0246 | Modifications to the 20/25 gearbox and floor boards to accommodate sliding seats. | ||
| View original record | x528 To Wor. From E. Copy to Hs. BY. RHC. HDY. BY/JNR/Mr Allwood. E.2/MN.15.7.35. ------------------ 20/25 Gearbox with Isolated Change Speed. ------------------------------------------ The difference… | ||
| scan0247 | Requesting a modification to the cover over the pendulum lever on the gearbox. | ||
| View original record | To BT. Copy to E. Hs. RHO. Ev. x528 HDY.1/MN.15.7.35. -------------------- Isolated Gear Lever - 20/25. With reference to the cover over the pendulum lever on the gearbox, will you kindly make this to… | ||
| scan0248 | Slight modifications to the 20/25 gearbox casting and floorboards for the isolated change speed gear mechanism. | ||
| View original record | To BY. Copy to W.H.s. RHC. HDY. X528 E.1/MN.18.7.35. 20/25 Gearbox with Isolated Change Speed. We send you herewith LeC.4616 showing the slight modifications necessary to the floor boards to enable… | ||
| scan0249 | Gear lever rattles on Bentley and 20/25 HP cars and the applicability of a standardised scheme. | ||
| View original record | To Sg. c. to Wor. c. to H. x528 Hs/Rn.11/KW.18.7.35. Gear Lever Rattles on Bentley and 20/25 HP. Cars. Replying to Sg.22/E.17.7.35. The scheme for the isolated change speed lever which has been… | ||
| scan0250 | Inquiring about modifications to the 20/25 HP gearbox to increase the bottom gear ratio. | ||
| View original record | Rm To Hs/Gry. X528 Hs/Rm.10/KW.12.9.35. 20/25 HP. Bottom Gear. Will you please let me know what modifications are necessary to the 20/25 gearbox to increase the bottom gear ratio by 16%, and whether… | ||
| scan0251 | Standardising the 25 HP Isolated Change Gear Lever using part N.Sch.4612. | ||
| View original record | X528 To By. c. to E. Hs/FJH.11/KW.17.9.35. 25 HP. Isolated Change Gear Lever. Will you please make sure that N.Sch.4612 is incorporated in the 25 HP. Isolated Change Gear Lever for standardisation.… | ||
| scan0252 | Querying the cost increase for an 'Isolated Change Gear Mechanism for 20/25' following a standardisation sheet. | ||
| View original record | To G/Rb. c. to Wor. c. to E. c. to By. x528 HS/Rm.14/KW.1.10.35. Isolated Change Gear Mechanism for 20/25. We note that on this Standardisation Sheet which we have received from costing, the increase… | ||
| scan0253 | Epidemic of complaints about second gear jumping out on 20/25 HP and Bentley chassis. | ||
| View original record | BY. Wer. E. EP. Hdy. Mas. Dev Hs. +526 Hd/SB1/HR.8.10.35. GRY - Comments please. Rmi re COMPLAINTS OF SECOND GEAR JUMPING OUT. 20/25 HP. AND BENTLEY CHASSIS. ------------------------- During the… | ||
| scan0254 | 20/25 HP gearbox synchromesh complaint and proposed modification. | ||
| View original record | To RHC. x528 Hs/Gry.11/KW.21.10.35. 20/25 HP. Gearbox. Since standardising on the Bentley the clutch with fabric on the driven member, which was also fitted to 21-G-IV, there have been complaints that… | ||
| scan0255 | Complaints of second gear jumping out on various chassis models. | ||
| View original record | GRX 1528 Hd/SM/HR.24.10.35. re COMPLAINT OF SECOND GEAR JUMPING OUT. 20/25 HP. and Bentley chassis. With further reference to our conversation in regard to the above, the information you require as to… | ||
| scan0256 | Interim report regarding complaints of second gear jumping out on 20/25 and Bentley chassis. | ||
| View original record | GRY. X528 Wory c. BY. EP. MX. Hs. E.6/HP.24.10.35. re Complaints of Second Gear Jumping out - 20/25 and Bentley Chassis. -------------------------------- With reference to the above, you will have… | ||
| scan0257 | Suggestions for modifying the 2nd speed coupling for 20/25 and Bentley models to prevent it from working out of mesh. | ||
| View original record | x528 BY. C.E. Hs. Ds. RHC. HDY.1/HP.30.10.35. Modified 2nd Speed Coupling 20/25 and Bentley. We send herewith N.Sch.4677 which shows our suggestions for preventing this coupling from working out of… | ||
| scan0258 | Complaints of the second gear jumping out of mesh on 20/25 HP and Bentley models. | ||
| View original record | To RHC. +528 Hs/Gry.31/KW.31.10.35. Complaints of Second Gear Jumping out of Mesh on 20/25 HP. & Bentley. We send you herewith N.Sch.4677, to overcome the above trouble, of which we are now getting a… | ||
| scan0259 | Standardisation of parts for an isolated change gear mechanism. | ||
| View original record | RR 755A (SH) (57312. 29-12-33) BM 3/640/2 COMPLETED 1.11.35. 20/25 STANDARDISATION OF PARTS. Date 2.10.35. X No. 528. Drawing N.S. No. 4474. Part LeC.4484 List " 4499. Description of Parts. ISOLATED… | ||
| scan0260 | Cost estimate for extra equipment and a comparison of costs between an old and new part. | ||
| View original record | Est. cost of extra jigs, tools and equipment (Sft/Ws.23.8.35) £321.10.0d. Could be brought on to production & 1st chassis in 'L' series (Sft/GH.11.9.35) without scrap. Material Labour Charges Total £… | ||
| scan0261 | Proposed design modification to fix an issue with the second gear sliding out. | ||
| View original record | x528 Parr H. Smith Wor: c. Hs. By. Mx. E.13/HP.8.11.35. Complaints of Second Gear Sliding out. With further reference to Wor.11/T.28.10.35, and my memo E.6/HP.24.10.35, we issued on 30.10.35 a design… | ||
| scan0262 | Oil seal modification for the brake countershaft on 20/25 and Bentley gearboxes. | ||
| View original record | x528 Hardy R What is this? Pem Hs. c. Sg. Wor. Hdy. (struck through) Hs/GWH at C. (struck through) E.1/HP.22.11.35. re Oil Seal for Brake Countershaft 20/25 Gearbox, and Bentley. --------------------… | ||
| scan0263 | Modifications for the 20/25 and Bentley Gearbox regarding perfect oil seals and cost reduction measures. | ||
| View original record | F.J.H x528 HDY.1/HP.19.12.35. DV. c. E.Hs. Da. RHC. 20/25 and Bentley Gearbox. Perfect oil seals applied to both ends of the servo countershaft and modifications to reduce cost as suggested in… | ||
| scan0264 | Request to manufacture two sheet metal intake bends for a 25/30 HP model, as per drawing Rm.65/6. | ||
| View original record | To RHC. X508 Hs/CTS.4/KW.3.2.36. 25/30 HP. Will you please make two intake bends in sheet metal, as shown on Rm.65/6. Hs/C.T.Salt. | ||
| scan0265 | Modification to the Gear Change Gate for the 25-30 model, reducing the gap to the housing. | ||
| View original record | Rm x528 EX. c.c. E. Hg. Day. RRC. Hs/Fm. E/HDY.1/HP.24.2.36. Gear Change Gate - 25-30. We understand that there is no need for the gap between the gate and the aluminium gate housing, which we… | ||
| scan0266 | Modification to the Gear Change Gate for the 25-30 HP model to reduce the gap with its housing. | ||
| View original record | x528 GRY BY. c.c. E. Hs. Dr. RHC. HS/RM. E/HDY.1/HP.24.2.36. Gear Change Gate - 25-30. We understand that there is no need for the gap between the gate and the aluminium gate housing, which we… | ||
| scan0267 | Experimental three-speed gearbox ratios for the 25-30 model, comparing performance with other vehicles. | ||
| View original record | x528 GRY. Your Comments please Rm. C.E. Des. LIS. KHC. HS/RW. E/HDY.2/HP.18.3.36 Experimental Ratios for Three Speeds for the 25-30 Gearbox. We send herewith N.Sch.4783 which shows the ratios we… | ||
| scan0268 | Comparative performance data table for various motor cars, including competitor models. | ||
| View original record | Car. Capacity c.c. Weight (cwts) Unladen. Assumed Laden. Laden wt/ capacity Ratio cc/cwt Rolling Rad.Tyres in. Overall gear ratio. 1st 2nd 3rd Top. Gradient Climbable 1 in. 1st 2nd 3rd Top. Buick 40… | ||
| scan0269 | Proposal and analysis of experimental gearbox ratios for the 25-30 model, comparing performance with other models. | ||
| View original record | X528 C. E. Day. JHC. HS/Rm. E/HDY.2/HP.18.3.36. Experimental Ratios for Three Speeds for the 25-30 Gearbox. We send herewith N.Sch.4783 which shows the ratios we propose. 1st speed is made .35 instead… | ||
| scan0270 | Comparative data table of various cars, detailing specifications like weight, capacity, gear ratios, and climbable gradients. | ||
| View original record | TABLE DATA Row 1: Car: Buick 40 Capacity c.c.: 3800 Weight (cwts) Unladen: 31 Weight (cwts) Assumed Laden: 37½ Laden wt/capacity Ratio cc/cwt: 101 Rolling Rad. Tyres in.: 13.6 Overall gear ratio: 1st… | ||
| scan0271 | Complaints of the second gear jumping out on Phantom II, Bentley, and 20/25 HP cars. | ||
| View original record | H. c-to Mr. [Illegible] c-to Mr. [Illegible] c-to Mr. [Illegible] c-to Mr. [Illegible] c-to Mr. [Illegible] c to Mr. [Illegible] [Handwritten] GRY/X HA/3826/HR.30.3.36. RE COMPLAINTS OF SECOND GEAR… | ||
| scan0272 | Issue with the 25 HP isolated change gear lever and proposing a solution. | ||
| View original record | To R. C. to Ey. C. to Da. C. to Hdy. X528 Hs/FJH.3/JH.10.7.36. 25 HP. Isolated Change Gear Lever. During a recent run on 21-C-IV, it was found that, after an appreciable distance had been covered… | ||
| scan0273 | Comparison of gear ratios and related specifications for a Chevrolet and a 25/30 HP model. | ||
| View original record | To Rm. > 528 13.11.36. Chevrolet and 25/30 H.P. Gear Ratios. Chevrolet. Tyre size - 6 x 16. Axle ratio - 4.1 : 1 Effective tyre circumference - 85". Road wheels. - 745.4 Engine /revs at 60 M.P.H. -… | ||
| scan0274 | Standardisation of screw threaded synchromesh cones for the 25/30 HP model. | ||
| View original record | RR 755A (5H) 20396 21/7/36 J.W.S. COMPLETED 10.3.37. 25/30 H.P. STANDARDISATION of PARTS Date: 22/2/37 4.2.37. X No. 528 Drawing No. Part List Description of Parts. SCREW THREADED SYNCHROMESH CONES… | ||
| scan0275 | Note on bringing a process into production for the 'P2' Series chassis with no extra tool cost. | ||
| View original record | Extra Tool Cost Nil. Could be brought on to production at the 1st chassis in "P2" Series. (Without scrap.) | ||
| scan0276 | Cost-reduction scheme for the 25/30 gearbox synchromesh mechanism. | ||
| View original record | 528. HHS. C.-E. Day. Ey. Rm. S/Psn. E/HDY.1/HP.13.3.37. 25/30 Gearbox. We send herewith a print of N.Sch.5065 and prints of the necessary detail drawings RS.456/7/8 showing the use of piston ring type… | ||
| scan0277 | Blueprint for experimental piston ring type springs to replace plungers in a synchro-mesh system. | ||
| View original record | EXCEPT FOR THE 3 DETAILS QUOTED ALL OTHER PIECES ARE STANDARD TO 20/25 & BENTLEY. 3 HOLES, EQUALLY SPACED, IN EACH RING GROOVE. WHEN ASSEMBLED AS SHOWN & WELL OILED THE INNER SLIDING PIECE SHOULD PULL… | ||
| scan0278 | Experimental piston ring type spring rings for synchromesh, detailing print distribution and manufacturing instructions. | ||
| View original record | To HPS. c. Rm. 528 E/HDY.4/HP.16.3.37. Experimental Piston Ring Type Spring Rings to replace plungers - Synchromesh - N.Sch.5065. Further to our memo E/HDY.1/HP.13.3.37 we send you herewith, as… | ||
| scan0279 | Experimental piston ring type spring rings for synchromesh, detailing manufacturing changes to ensure correct grain flow. | ||
| View original record | 528. To HPS. c. Rm. E/HDY.4/HP.16.3.37. Experimental Piston Ring Type Spring Rings to replace plungers - Synchromesh - N.Sch.5065. Further to our memo E/HDY.1/HP.13.3.37 we send you herewith, as… | ||
| scan0280 | Instructions regarding the level stick, filling plug, and floorboard modification for the 25/30 HP Gearbox. | ||
| View original record | c.c. E.Da. Rm. HPS. HWC/Org 528. E/HDY.2/HP.19.4.37. 25/30 HP. Gearbox. We send herewith N.Sch.5107 showing the level stick and filling plug placed in the cover as for the Bentley, as requested in… | ||
| scan0281 | Requesting modifications to a 3-speed gearbox from a Citroen Bentley. | ||
| View original record | 528? HPS. from Rm/Gry. 3-Speed Gearbox. Rm/Gry8/R.8.9.37. We are sending into the Shop the gearbox off 4.B.IV (Citroen Bentley). Will you please modify this by fitting the set of three speed gears,… | ||
| scan0282 | Requesting the transfer of a 3 Speed 25/30 Gearbox to the Repair Department. | ||
| View original record | 528. HPS. from Rm/Gry. Rm/Gry1/R.4.10.37. 3 Speed 25/30 Gearbox. Will you please send this box which you have just dismantled over to the Repair Dept. where they will fit it to 22.G.5. They have… | ||
| scan0283 | Request to modify the plunger springs in the synchromesh mechanism for a 3-speed gearbox. | ||
| View original record | P.500a HPS. from Rm/Gry. Rm/Gry2/R.13.10.37. 3-Speed Gearbox in 22.G.V. Will you please modify the plunger springs in the synchromesh mechanism so that the end load to get the plunger out of the… | ||