Rolls-Royce Archives
| Identifier | Entry | ||
| 07-page001 | From R. to Hs. about completing a Phantom car following a telephone message, with a note on clutch trouble. | ||
| View original record | To Hs. from R. X7300 R1/M29.5.26. PHANTOM - 12-EX. X.7940 X.7300 Concerning your telephone message to WW. this morning, certainly adhere to your programme and get the above car really complete and… | ||
| 07-page002 | Issues with an experimental 12-EX clutch, its design, and potential material solutions. | ||
| View original record | X7300 R1/M31.5.26. To Hs. from R. c. to BJ. Wor. RG. c. to BY. CWB. BY. c. to PN. E. AJS. RE. 12-EX CLUTCH. X.7300 X.3409 With reference to the trouble with this it will be understood that this is not… | ||
| 07-page003 | Potential modifications to the clutch to reduce its moment of inertia. | ||
| View original record | To HS FROM R. C. to BJ. WOR. BY.AJS. X7300 R5/M10.6.26. EAC. S. CLUTCH - X.7300. Regarding the clutch I have arranged with HS. that unless the fabric on the driven peice can be made with less moment… | ||
| 07-page004 | Proposal from Mr. Royce to use Kelmit metal bushes to prevent squeaking in the Phantom clutch lever fulcrums. | ||
| View original record | To BY. from AJS. c. to BJ. Hs. X7300 AJS1/M22. 7.26. PHANTOM CLUTCH. X. 8300 X. 7300 In order to prevent the squeaking of the lever ful-crums on this unit, Mr. Royce is of the opinion that we should… | ||
| 07-page005 | On a lightened flywheel and clutch fitted to vehicle 12 EX, detailing an experiment, fabric dimensions, and test results. | ||
| View original record | Re lightened flywheel and clutch fitted to 12 EX. X7800 We do not propose sending a standardisation sheet through for this. in view of A.F.S. letter of the 26-6-26 This was fitted with a new of… | ||
| 07-page006 | Investigation into vibration issues on the 12-EX model. | ||
| View original record | To Hs. from R. c. to BJ. BY. c. to Wor. CWB. c. to PN. 47300. RL/M1.10.26. 12-EX - VIBRATION ETC. X.634 X.8010 EX.7010 X.7300 With reference to 12-EX which came to WW. on the 29th.ult. this car… | ||
| 07-page007 | Testing a new serrated drive on the Phantom clutch coupling shaft. | ||
| View original record | To OY. from R. c. to BJ. Hs. X7300 R2/M2.10.26. PHANTOM CLUTCH. X.7300 X.8300 We have many times thought of trying a serrated drive on the clutch coupling shaft, but feared to try one. Firstly, we… | ||
| 07-page008 | Sending new schemes for a gearbox and clutch casing, detailing modifications. | ||
| View original record | EY. From DA. +7300 DA4/M25.11.27. c. to BJ. Hs. EAC.10 GEARBOX. X. 7000 X. 7310 X. 7300 We send herewith the following N.schs. shewing the above gearbox and clutch casing :- N.scheme 2488 2450 2451… | ||
| 07-page009 | Blueprint LeC.2520 for a Slipper Flywheel with a disc drive. | ||
| View original record | R. from E. c, to BJ. Hs. BY. x.7300 E4/M6.3.28. EAC.10 SLIPPER FLYWHEEL. Blueprint LeC.2520 shews the above arranged with a disc drive to the pressure plate instead of serrations. This is at Expl:… | ||
| 07-page010 | Standardisation of cotton duck washers for the slipping wheel in conjunction with lighter springs. | ||
| View original record | RR 755 REVISED (10H) (D.C. 777-29-2-28) M C.Ld STANDARDISATION of CHASSIS PARTS. Completed 10/5/28 Date 30.3.28 No. 7300 Description of Parts. COTTON DUCK WASHERS FOR SLIPPING WHEEL IN CONJUNCTION… | ||
| 07-page011 | Questionnaire about fitting a new part to a chassis, including test dates and costs. | ||
| View original record | (1) The number of the first chassis on which new part will be fitted. Not known. (2) Date when the chassis will be handed to test. " (3) Cost of scrapped material, if any, Nil. (4) Cost of jigs and… | ||
| 07-page012 | Modifications to the clutch thrust to make it oil retaining for the centralised chassis lubrication system. | ||
| View original record | BY. from DA. c. to BJ. Hs. +7300 DA3/M16.5.28. CENTRALISED CHASSIS LUBRICATION. X.3806 CLUTCH THRUST. X.7300 Herewith we send N. sch. 2601 shewing the slight modifications to the clutch thrust to make… | ||
| 07-page013 | Request to machine two flywheels as per an attached sketch to fit a 12-EX car for crankshaft testing. | ||
| View original record | To RHC. from Hs/Rn. +7300 +7010 Hs/Rm2/LGl.8.5.28. We want to try 12-EX crankshaft without the slipper wheel.Owing to the construction of the new type slipper drive we cannot do this without machining… | ||
| 07-page014 | The cause of unevenness in a starter gear due to a burr on the flywheel ring. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to EY. +7300 Hs2/LG22. 5. 28. STARTER ON 14-EX. X. 7655 X. 7300 We found the cause of the unevenness in the starter gear was due to a bad burr on the… | ||
| 07-page015 | Centralised chassis lubrication for the front brake differential shaft, pedals, and clutch operating shaft. | ||
| View original record | BY. from DA. c. to BJ. Hs. 47300 DA2/M26.5.28. CENTRALISED CHASSIS LUBRICATION. X.3806 X.7300 X.7420 X.7470 We send herewith N.sch.2615 - the lubrication applied to the front brake differential shaft,… | ||
| 07-page016 | Letter to Rolls Royce of America regarding the necessity of drilling holes in a clutch driving piece. | ||
| View original record | c. Mr. Nadin. c. Mr. Burton. c. Hs. X7300 3rd. July 1928. BY2/G.3.7.28. Messrs. Rolls Royce of America, Inc. Springfield, Mass. For attention of M. Olley, Esq., Dear Sirs, CLUTCH. ------- Referring to… | ||
| 07-page017 | Standardisation of chassis parts concerning the flywheel, light type clutch, serrated drive and larger clutch stop. | ||
| View original record | RR 755 REVISED (10M) (D.C 777-29-2-28) Mṭ C. Lṭ STANDARDISATION of CHASSIS PARTS. COMPLETED 18.7.28 Description of Parts. FLYWHEEL & CLUTCH, LIGHT TYPE SERRATED DRIVE, LARGER CLUTCH STOP. Origin. To… | ||
| 07-page018 | Chassis number, test date, and costs for fitting a new part. | ||
| View original record | (1) The number of the first chassis on which the new part will be fitted. G-2-B series. (2) Date when the chassis will be handed to test. 12.11.28 (3) Cost of scrapped material, if any. Nil. (4) Cost… | ||
| 07-page019 | Performance issue with a lightened clutch and flywheel, specifically a rusted ball race preventing proper disengagement. | ||
| View original record | To R: from Hs/Rn. c. to BJ. Wor. c. to S. DA. c. to BY. X7300 Hs/Rn5/LG2. 10.28. LIGHTENED CLUTCH AND FLYWHEEL (NO.5.) SERRATED UNIVERSAL JOINT. L.O.P. G.76429. This has now run 10,000 miles on 12-EX.… | ||
| 07-page020 | Modifications for a lightened clutch, flywheel, and serrated universal joint. | ||
| View original record | Hs. from DA. X7300 DA7/M10.10.28. LIGHTENED CLUTCH & FLYWHEEL - SERRATED X.7300 X.1360 X.7340 UNIVERSAL JOINT. No.5. With reference to Hs/Rm5/LG2.10.28., we suggest that a thing which might be… | ||
| 07-page021 | Fitting a stainless steel plug to a lightened clutch and flywheel on car 12-EX before it goes to France. | ||
| View original record | To BY. from Hs/Rn. X7300 Hs/Rn4/LG17.10.28. LIGHTENED CLUTCH & FLYWHEEL. To JH X7346 With reference to DA7/M10.10.28 attached. If you could instruct a stainless steel plug as suggested in this memo.… | ||
| 07-page022 | Excessive oil in the 'SS' clutch with recommendations for modification. | ||
| View original record | X7300 To BY. from Hs/Rn. c. to DA. Hs/Rn2/LG23.11.28. 'SS' CLUTCH. X7300 On dismantling the 'SS' clutch, we find that an excessive quantity of oil has got on the friction surfaces. As oil is almost… | ||
| 07-page023 | Blueprint showing a cross-section of a mechanical assembly with an annotation for a modification. | ||
| View original record | G76591 LIP THREE TIMES THE PRESENT DEPTH | ||
| 07-page024 | Agreeing to the proposed increase in the height of a lip. | ||
| View original record | COPY. BD HS. FROM DA. X7300 DA1/M29.11.28. With reference to HS/RM2/LG.23.11.28. we quite agree to the increase in height of the lip proposed. DA. | ||
| 07-page025 | Progress report on a 10,000-mile test for the 'SS' model, concerning starter motor adjustments and a clutch fault investigation. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. X7300 S E C R E T. Hs5/LG21.12.28. 10,000 MILES ON 'SS'. X7941 X7620 We have had a telegram to say that they have completed 2300 miles on the SS.… | ||
| 07-page026 | Suggestions for freeing the 'SS' clutch plates, deferring work until comments are received. | ||
| View original record | BY. from DA. c. to BJ. Hs. X. 7300 DA3/M29.12.28. 'SS' CLUTCH. Herewith we send N.sch.2790 shewing some suggestions for freeing the clutch plates, which we have sent to R. In view of the fact that Hs.… | ||
| 07-page027 | Clutch stop and control for the 'SS' Chassis, comparing it to other models. | ||
| View original record | X. 7300 DA. HS. from R. E. R1/M6.1.29. c. to BJ. Wor. c. to SG. CWB. c. to PN. BY. -------- 'SS' CHASSIS - CLUTCH. -------- As far as I understand there is no need to make any alteration to the clutch… | ||
| 07-page028 | Erratic behavior in 'SS' clutches due to lubrication difficulties. | ||
| View original record | To DA. from Hs/Rm. X7300 Hs/Rm7/LG14.1.29. c. to BY. 'SS' CLUTCH. X7300 Although the SS. clutches are now better, they still behave rather erratically. One cause appears to be the difficulty of… | ||
| 07-page029 | Two proposals for improving the S.S. Clutch arrangement. | ||
| View original record | c.BY/TWD. BY. from DA. cc. to BG. Hs. DA. c.HS. X7300 BY4/G.17.1.29. S.S. CLUTCH. ---------- X.7300 X.548 X.547 Referring to Hs/Rm7/LG.14.1.29. we are sending you a blueprint of the arrangement of the… | ||
| 07-page030 | Design suggestions for the 'SS' clutch, focusing on bearing races and proportions. | ||
| View original record | BY. from DA. c. to SG. Hs. XD7300 DAL/M15.2.29. 'SS' CLUTCH. X.7300 X.548 X.547 We received your telegram yesterday re. a method of holding the inner or outer race while we slid the opposite one under… | ||
| 07-page031 | Proposal for modification to a serrated universal joint and clutch shaft. | ||
| View original record | BY. Hs. from DA. c. to SG. X7300 SERRATED UNIVERSAL JOINT. SS. CLUTCH SHAFT. X.7300 X.7340 X.1457 Herewith we send N.sch.2832 on the righthand side of which we have shewn R's proposal for modification… | ||
| 07-page032 | The improved slipper flywheel and spring drive. | ||
| View original record | BY. from E. X7300 c. to SG. HS. E.2/M26.7.29. X. 7300 X. 7010 SS. IMPROVED SLIPPER FLYWHEEL AND SPRING DRIVE. We send you herewith Lec. 2339. shewing the above. The crankshaft for this can be made… | ||
| 07-page033 | Extract discussing the operation of the clutch brake on an S.S. Chassis. | ||
| View original record | EXTRACT FROM :- X7300 Hs. c. By. Mx5/OG8.8.29. Re. S.S. CHASSIS. ---------------- 1. CLUTCH BRAKE. We find that the rate of depression of the pedal has considerable effect on the stopping of the… | ||
| 07-page034 | Extract concerning modifications needed for the slipper flywheel clearance on an S.S. Chassis. | ||
| View original record | EXTRACT FROM :- x7300 Hs. c. By. Mx5/OG8.8.29. Re. S.S. CHASSIS. 5. SLIPPER FLYWHEEL CLEARANCE. The clearance between the rear face of the slipper wheel is in some cases so small that it gives… | ||
| 07-page035 | Failed modification to a 20 HP thrust bearing and the dispatch of a new nozzle. | ||
| View original record | X7480 Hs/Rn. from DA. DA1/M20.8.29. X7480 X5300 With reference to Hs/Rn2/MJ17.8.29. the idea of leaving the clutch trunnion out of the central lubrication was that the thrust bearing was made oil… | ||
| 07-page036 | Request for a report on the 20 HP gearbox freewheel and a discussion on potential clutch and flywheel design improvements. | ||
| View original record | HS. FROM R. & DA. C. to By. X7300 R/DA1/M24.8.29. X5310 X5300 X7300 20 HP+ TRANSMISSION. We should like a report on the position of the freewheel in the sideshaft on the 20 HP. gearbox, (N.schemes… | ||
| 07-page037 | The wear on trunnion shafts for the S.S. Clutch Control and its suitability for the new 20 HP car. | ||
| View original record | filing X7480 To DA. from Hs/AJL. Hs/AJL.3/MJ.27.9.29. S.S. CLUTCH CONTROL. In reply to DAL/M23.9.29, we have examined the trunnion shafts on all our S.S. cars at present in Derby (viz. 19, 20, 21 and… | ||
| 07-page038 | Modification to the Phantom II clutch, specifically the Ferodo riveting and damper plate adjustment. | ||
| View original record | BY. From Da. COPY. X7488a.4/15.10.29. c. to Sg. Hs. PHANTOM II CLUTCH. X.7480 X.3409 Herewith we send N.Sch.2367, shewing the Ferodo riveted to the driven member of the clutch, and the modification to… | ||
| 07-page039 | Commencement of rust on Phantom II flywheel and clutch parts due to damp weather. | ||
| View original record | x/300 To By. from Hs/AJL. c. Wor. HS/AJL2/AD26.10.29. PHANTOM II FLYWHEEL AND CLUTCH. During the recent three weeks of comparatively damp weather, it has been noticed that all the bright smooth… | ||
| 07-page040 | Modifications to the Phantom II clutch, including a proposal from Mr. Royce to use ferodo on the inner member. | ||
| View original record | COPY. X7480 BY. From Da. Da.1/M6.11.29. c. to Sg. c. to Hs. X. 7480 X. 3409 PHANTOM 11 CLUTCH. We send herewith N.Scheme 2975, shewing a modification to the Phantom clutch in connection with the… | ||
| 07-page041 | New scheme for lubricating the Phantom II clutch spigot bearing. | ||
| View original record | Copy 7480 BY. From Da. c. to Sg. c. to HS. Da. 2/M6.11.29. X.7980 X.7480 X.878. PHANTOM II LUBRICATION OF CLUTCH SPIGOT BEARING. Herewith we send N.Scheme 2973 shewing a method of lubricating the… | ||
| 07-page042 | Testing a modified clutch lubrication scheme for the Phantom II, which is now becoming standard. | ||
| View original record | X.7480. DAW c. Hs. EP/16/H20.11.29. re. PHANTOM II. CLUTCH LUBRICATION. Further to your DA1/M16.10.29, and our EP21/H30.10.29., I am now able to report that a new engine was put on test for unit… | ||
| 07-page043 | Specifications for a spring behind a carrier plate on a 20-EX model. | ||
| View original record | HS/Rm. K7480 G.73710. Spring behind carrier plate on 20-EX. Dia. of Wire. .092 Free Length. 1.100 Outside Dia. .487" Working Coils. 5 1/2 End Coils 2 69 lbs to compress to .850". Stress 15,400 O.K. Rm | ||
| 07-page044 | Trial of two new damper springs for the Phantom II clutch. | ||
| View original record | BY. FROM DA. c. HS. X/780 DA8/G.11.3.30. PHANTOM II CLUTCH. Here with we send N. Sch. 3055 shewing two damper springs of increased strength for the above clutch, which R. wishes to try. The lighter of… | ||
| 07-page045 | Material selection for the Phantom II experimental clutch pressure plates. | ||
| View original record | X7480 BY. FROM DA. c. Hs. ----------------- DA1/G.17.3.30. PHANTOM II CLUTCH - FERODO ON THE DRIVEN MEMBER. ------------------------------------------------- With reference to the above experimental… | ||
| 07-page046 | Request to obtain three pairs of woven clutch discs and the return of a sample. | ||
| View original record | ROY. From Hs/Rm. X7480 Hs/Rm.3/MJ.21.3.30. We should like to obtain three pairs of clutch discs woven to prevent radial distortion. You will recollect that you sent us a sample clutch disc embodying… | ||
| 07-page047 | Alterations to the friction clutches for 45 HP & 25 HP cars, particularly for the American market. | ||
| View original record | Hs. from R. c. Sg. By. c. Da. X7480 RL/M10.7.30. X.7772 X.7480 X.5480 45 HP & 25 HP. CARS FRICTION CLUTCHES. I have agreed to the fabric being carried on the disc, but I am not sure that we have the… | ||
| 07-page048 | Modifications to the Phantom II clutch in relation to a proposal to fit Ferodo discs. | ||
| View original record | Hs. X7480 BY17/G.15.7.30. RECEIVED 16 JUL 1930 HS PHANTOM II - CLUTCH. With reference to the standardisation sheet which is being circulated in connection with the proposal to fit Ferodo discs on the… | ||
| 07-page049 | Cracked cast iron clutch pressure plate from a Phantom II car. | ||
| View original record | X7480 To R. From Hs. c. to SG. Nor. c. to E. Da. Hs.4/MJ. 23.7.30. x7941d. PHANTOM II CLUTCH. We have a report from C.W.H. that the clutch on 24-EX. car has failed. The pressure plate which was made… | ||
| 07-page050 | Blueprint of a front C.I. pressure plate showing crack formations after failure. | ||
| View original record | BROKEN RIGHT THROUGH AND OPENED OUT .0315" CRACK STARTED CRACK STARTED FRONT C.I. PRESSURE PLATE Ex 2072 FAILED AT 1/2 HR ROLLS-ROYCE. LTD DERBY PRINT ROOM 29 JUL 1930 DERBY | ||
| 07-page051 | Standardisation of chassis parts regarding the automatic oiling of the clutch spigot bearing from the gearbox. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. COMPLETED 26.8.30. Description of Parts. AUTOMATIC OILING OF CLUTCH SPIGOT BEARING FROM GEAR BOX. Origin. To overcome uncertain hand oiling of spigot and bring same… | ||
| 07-page052 | Instruction regarding the clutch assembly for the first 50 N.2 series chassis. | ||
| View original record | BY/TWE c. G.C. c. SFe. c. Hs. x7480 BY/G.28.8.30. N.2 SERIES - CLUTCH. Please note that the first 50 chassis in N.2 series should be produced with the same clutch as M.2 with the exception that we… | ||
| 07-page053 | 40/50 clutch tests comparing the resistance to 'burning out' of different clutch linings under destructive conditions. | ||
| View original record | To S. From Hs/Ru. c. to SS. MOT. c. to Ds. E. c. to Sy. Ref: Hs/Ru.S/J.30.3.30. Handwritten: X7480, X7305 40/50 CLUTCH TESTS. We carried out some tests to determine the relative resistance to "burning… | ||
| 07-page054 | Continued memorandum discussing clutch troubles and spring inter-leaving materials, referencing American experiences. | ||
| View original record | IMB/SM.30. Contd. The material used for spring inter-leaving and are trying Etc. It is rather surprising that the Americans say they can burn out our standard clutch and yet have not run into the… | ||
| 07-page055 | Proposing a test on a Phantom clutch with new fabrics to investigate failures. | ||
| View original record | To RHC. From Hs/GWH. Hs/GWH.1/WJ. 23.8.30. Re. Failure of Phantom Clutches. --------------------------------- We wish to try out tests with the test bed, engine, a clutch fitted up with new fabrics.… | ||
| 07-page056 | Destructive tests comparing the resistance to 'burning out' of a fabric-on-driven-plate clutch versus a standard clutch. | ||
| View original record | To A. From He/Sm. c. to SS. HOT. c. to De. E. c. to RY. X7305 He/Sm.6/MJ.30.8.30. X7480 X7305- 41/80 CLUTCH TESTS. We carried out some tests to determine the relative resistance to "burning out" of… | ||
| 07-page057 | Spring inter-leaving material and the surprising performance of the standard clutch by American counterparts. | ||
| View original record | -2- Hs/Sn.E/LL.31.3.30. Contd. the material used for spring inter-leaving and are trying tols. It is rather surprising that the Americans say they can burn out our standard clutch and yet have not run… | ||
| 07-page058 | Modification to Phantom clutches involving an oil catcher to prevent lubricant from damaging the clutch fabric. | ||
| View original record | Hd. From Hs/Rn. For Depot Sheet. X7480 Hs/Rn.1/W.1.9.30. PHANTOM CLUTCHES. X7480 X872 From time to time we have had complaints that if the ball races in the 40/50 HP. clutch were properly lubricated,… | ||
| 07-page059 | Further tests conducted on Standard Phantom Clutch fabrics. | ||
| View original record | from Hs/GWH. H.s. X7480 Hs/GWH1/AD9.9.30. X7430 X7505 STANDARD PHANTOM CLUTCH. G.75105 FABRICS We have carried out further tests in slipping the clutch fitted up with a standard fabric on the back… | ||
| 07-page060 | Problems with the Phantom II left-hand chassis following a 10,000-mile endurance test. | ||
| View original record | COPY. To Sg. From Hs. c. to Wor. c. to War. By. Hsl/AD9.9.30. X.7772. X.7941d. X.7250. X.3499 X.7310. X.7480. X.7080. PHANTOM II LEFT HAND CHASSIS. As a result of running 24-EX 10,000 miles in France… | ||
| 07-page061 | Modifications for the clutch, carburetter, and brakes on experimental car models. | ||
| View original record | we can overcome some of the faults with the present clutch by adding extra rivets, this is being done at once. 25-EX will go away with the new type clutch if the modifications now being tested make it… | ||
| 07-page062 | Phantom clutch failures and proposed improvements with new Ferodo material and extra rivets. | ||
| View original record | A7480 To R From Hs. C. to CE. C. to WOP. C. to I. C. to Ds. C. to Hy. Ref. AJ/W.10.9.30. X7480 X7305 PHANTOM CLUTCH. We have been going into the failures of the present Phantom clutch and have been… | ||
| 07-page063 | Ongoing clutch development issues, including problems with pressure plates, splines, and cross binding. | ||
| View original record | -2- Hs./11.10.2.31. Contd. We are still not free from troubles with the clutch having the Ferodo rivetted to the driven member. Because of this we are going ahead with a further batch of 50 cars with… | ||
| 07-page064 | Phantom Clutch fabrics from supplier Ferodo, questioning why the company was not informed of improved materials. | ||
| View original record | Hs To Hs. from Sg. Copy to Wor. E. (struck through) DA. BY. (struck through) Phantom Clutch. x7480 x7305 Sg3/E12.9.30 Referring to Hs.2/MJ.10.9.30 the point which I note in particular is that after… | ||
| 07-page065 | The Phantom Clutch, questioning why supplier Ferodo did not inform the company of an improved clutch fabric. | ||
| View original record | To Hs. From Sg. c. to Wor. E. c. to Da. By. COPY. Phantom Clutch. X.7480. X.7305. Sg3/E12.9.30. Referring to Hs2/MJ.10.9.30. the point which I note in particular is that after consulting with Ferodo's… | ||
| 07-page066 | Confirming verbal instructions for fitting clutches to car 23-EX and a test bed engine. | ||
| View original record | To RHC. From Hs/GWH. X7480. Hs/GWH.1/W.15.8.30. CLUTCHES - PHANTOM. X.7480. X.7305. To confirm verbal instructions. We should like 23-EX. fitting up with a Std. clutch, using the pressure driving, and… | ||
| 07-page067 | Comparison between two clutch types for the Phantom model, recommending to stay with the current design. | ||
| View original record | To R. From Hs. c. to HS. HOT. c. to L. Da. c. to EV. PHANTOM CLUTCH. The more tests we do comparing the two types of clutches, the more we are convinced that it would be safer to stick to the present… | ||
| 07-page068 | Clutch faults with a cast iron back plate and performance testing of a standard clutch. | ||
| View original record | -2- to change gear at high speeds. Another fault we have had is with the cast iron back plate. Even with a moderate amount of slipping this plate is dished so that the initial spring engagement was… | ||
| 07-page069 | Decision not to change the Phantom's clutch material and the need to clearly communicate this to the American company. | ||
| View original record | x7480 HS To Hs. from Sg. Copy to Wor. re Phantom Clutches. x7480 Y7305 Y9194 Sg3/E16.9.30 RECEIVED 16 SEP 1930 I have read with great interest Hs.1/MJ.15.9.30 and former memos. on the same subject. It… | ||
| 07-page070 | Cancellation of a standardisation sheet for Phantom Clutches based on test results. | ||
| View original record | To Hs. from Sg. re Phantom Clutches. Copy to Wor. I have just received Standardisation sheet No. 7305/7480 dated 5.7.30 for fitting friction surfaces of clutch on driven/member. This has been signed… | ||
| 07-page071 | Standardisation of chassis parts for the supporting stay to the clutch pedal shaft. | ||
| View original record | RR 755 REVISED (10H) (DP 687 4-1-29) BM. 2/5943. COMPLETED 18.9.30. *7480- STANDARDISATION of CHASSIS PARTS. Date 6.6.30. X No. 7480. Drawing No. EX. 4697 Part List Description of Parts. SUPPORTING… | ||
| 07-page072 | To fit circular woven fabric with extra rivets to the clutch on car 20-EX. | ||
| View original record | X7480. To RHC. from Hs/GWH. Hs/GWH2/AD18.9.30. CLUTCH. Will you please fit circular woven fabric with extra rivets to the clutch on 20-EX. This is a standard clutch. Hs/GWH. | ||
| 07-page073 | Results of tests conducted on two types of Phantom clutches on a test bed. | ||
| View original record | For Files. Hs/GWH.19.9.30. X. 7480. X. 7305. PHANTOM CLUTCH. We have now finished the tests with both types of Phantom clutches on the Test Bed. The last test has been with a clutch with the fabric on… | ||
| 07-page074 | Severe slipping test performed on a Phantom driven plate clutch. | ||
| View original record | To Hs. From G.W.H. 87480 Hs/GWH.2/MJ.25.9.30. PHANTOM DRIVEN PLATE CLUTCH. We have carried out a severe slipping test with the driven plate clutch to obtain values of time taken to seize the pressure… | ||
| 07-page075 | Page 2 of a memo discussing the condition of springs and a clutch. | ||
| View original record | -2- transmitted to the coils, but the condition of the springs had not sufficiently deteriorated to cause the clutch to slip and not take the drive. Hs/G.W.Hancock. | ||
| 07-page076 | Failures and testing of experimental Phantom clutches for Rolls-Royce of America. | ||
| View original record | c. to Sg. c. to Wor. c. to Mr. Beaver. X. 7772. X. 7480. Expl. Dept. HSS/AD. September 26th.1930. Messrs. Rolls-Royce of America Inc., Springfield, Mass. U.S.A. For the attention of Mr. Olley. Oy.… | ||
| 07-page077 | Clutch testing, comparing a new material against the standard, and proposing modifications for production cars. | ||
| View original record | -2- are aware they handle all types and in many cases design the clutches for various firms. They recommend we should try a new material which they were supplying for a lot of the big heavy 'bus work… | ||
| 07-page078 | Experimental modification to the Phantom clutch plate to reduce weight. | ||
| View original record | X7480 BY. FROM DA. C. to - SC. C. to - HS. PHANTOM CLUTCH. DA1/M23.9.30. We send herewith N. scheme 3146., shewing a modification to the standard clutch plate, that is, with the fabric on the driver,… | ||
| 07-page079 | Amount and type of oil required for the Phantom clutch ball race and universal joint. | ||
| View original record | X7480 To BY. From Hs/GWH. Hs/GWH.1/MJ.29.9.30. PHANTOM. Re Clutch Ball Race & Universal Joint. We have, at your request, measured the amount of oil that is necessary to prime the rear housing of the… | ||
| 07-page080 | Investigation into flywheel vibrations, ruling out crankshaft torsional period and testing various solutions. | ||
| View original record | To E.W.H. W.A.R. A.G.E. A.F.S. H.I.F. Dr. L. From Hs. No. 4/J.3.10.30. X. 634. X. 7300. FLYWHEEL VIBRATIONS. There is considerable evidence to show that the vibration we are investigating at the… | ||
| 07-page081 | Supply request and specifications for a clutch stop spring for EAC.7. | ||
| View original record | To RHC. From Hs/GR. x)480 Hs/GR.2/MJ.6.11.30. CLUTCH STOP SPRING FOR EAC.7. Will you please supply for 14-EX :- Dia. of wire .104 (12 S.W.G.) No. of working coils 5. Total numberof coils 7, one to be… | ||
| 07-page082 | Instruction to amend the working clearance for the clutch trunnion sleeve on 25 HP and Phantom II models following a seizure. | ||
| View original record | To BY. From Hs/GWH. c. to Hs. Hs/GWH.1/MJ.22.11.30. CLUTCH TRUNNION SLEEVE. In dealing with a recent seizure of the clutch trunnion sleeve we made the working clearance .004" on the dia. which… | ||
| 07-page083 | Torsional vibrations in a slipper wheel's steel disc and related engine performance issues. | ||
| View original record | E. HS.) FROM R. BY. ) (At Le Canadel.) Copy to SG. WOR. P. 2. LOW INERTIA SLIPPER WHEEL. X.634. X.7480. X.5770 The breakage of the steel disc I think shews that the crankshaft shortens and lengthens… | ||
| 07-page084 | Technical memorandum discussing flywheel vibrations, inertia, and crankshaft design modifications. | ||
| View original record | E. RG. ) FROM R. HS. BY.) (At Le Canadel.) V7300 R1/M6.2.31. Copy to - SG. WOR. HY. Copy to - EP. RHC. ENGINES GENERALLY X.634. CARS IN PARTICULAR. X.7300. X.5300X P. 2. is the most important at the… | ||
| 07-page085 | Engine vibration, balance weights, and potential improvements by using thicker webs and larger pins. | ||
| View original record | (2) We have from time to time increased the pins and not been altogether satisfied that they have made much improvement - i.e. the added weight has done as much harm as the increased stiffness has… | ||
| 07-page086 | 12-cylinder engine design, crankshaft types, and vehicle vibration issues. | ||
| View original record | (3) Now you will see one reason why am I so very keen for a 12 cyl. engine, because as this will always run beyond the master period of 6 per rev. it can have balance weights of any extent that the… | ||
| 07-page087 | Proposal to increase the thickness of the crankshaft flange and flywheel web for improved stiffness. | ||
| View original record | R. FROM E. X7300 E2/M10.2.31. C. to SG. WOR. C. to HS. BY. P. 2. FLYWHEEL. X.7010. X.7300 We find that the crankshaft flange and flywheel web on P. 2. are somewhat diaphragmish, being .3 and .275"… | ||
| 07-page088 | Nature, cause, and testing methods for a vibration issue in a Phantom car engine. | ||
| View original record | E. HS. FROM R. (At Le Canadel.) R1/M20.2.31. X.634. X.7300 X.5300 C. to SG. WOR. C. to PN. RHC. VIBRATIONS - CAR ENGINE BALANCE WEIGHTS, ETC. So far we cannot come to any satisfactory conclusion of… | ||
| 07-page089 | Flywheel whirl, crankchamber stiffness, and engine periodicity issues. | ||
| View original record | (2) It should be understood that P. 2. crankchamber, though lighter is stiffer, and therefore as far as I know, would have a higher period than P. 1. There should be no difference in speed of flywheel… | ||
| 07-page090 | Lighter and stiffer flywheel modifications for Phantom experiments. | ||
| View original record | V1300 HS. E. )FROM R. BY. ) (At Le Canadel.) R3/M23.2.31. X.634. X.7300 c. to SG. WOR. LIGHTER & STIFFER FLYWHEEL FOR PHANTOM EXPERIMENTS. MR. Grills says in his memo. that they proposed placing the… | ||
| 07-page091 | Design of a lighter and stiffer flywheel, including material changes and bolt configuration. | ||
| View original record | R. FROM E. C. to SG. WOR. C. to HS. BY. P. 2. LIGHTER & STIFFER FLYWHEEL. Xn300 E1/M27.3.31. X.7010. X.7300. Regarding your recent memo. with reference to the above, the stiffer crankshaft flange and… | ||
| 07-page092 | Investigations into engine booms on the Phantom II model, including tests with a stiffer flywheel. | ||
| View original record | X7300 To R. From Hs/Gry. c. to Sr. Wor. c. to E. Da. c. to By. Hs/Gry.15/KT.2.3.31. x634 y7300 BOOMS ON P.II. Replying to your R.3/M23.2.31., we are going to try a stiffer flywheel back plate and… | ||
| 07-page093 | Blueprint drawing of a 40/50 crankshaft stiff flange. | ||
| View original record | OTHER DIMENSIONS TO E 79788, HS 396, RECESS FOR BOLT HEAD, .750, 3.050, -.010 / 25, .325 / .10, .500, 7.400 DIA, -1, 3.275, 4.600 ±.010 DIA, 5.150 ±.010 DIA, 4.950 DIA CTL, 5.699 DIA, E OF B'ING,… | ||
| 07-page094 | Blueprint for a stiffened flywheel. | ||
| View original record | H=325 RECESS FOR NUT .625 RAD FOR OTHER DIMENSIONS SEE G 77287 STIFFENED FLYWHEEL. P.II 10.060 DIA 2 1/4 DIA .300 .415 R.12 R.62 | ||
| 07-page095 | Instruction to modify and test a flywheel by increasing the number of securing bolts from 6 to 9. | ||
| View original record | X7300 BY. FROM E. E1/M10.3.31. C. to SG. WOR. HS. P. 2. CRANKSHAFT & FLYWHEEL. X.7010. X.7300. In accordance with R1/M7.3.31. and E1/M27.2.31. would you please instruct LeC. 2874 with 9 bolts securing… | ||
| 07-page096 | Tests conducted to investigate the cause of a 'boom' or vibration in the Phantom II model. | ||
| View original record | To R. From Hs. c. to SS. Mor. c. to E. Da. c. to By. P.2. BOOMS AND VIBRATIONS. We consider that we have done enough tests now to be able to say definitely that on Phantom II the flywheel is not the… | ||
| 07-page097 | Investigation into a 'boom' complaint, comparing Phantom I and Phantom II models and testing potential solutions. | ||
| View original record | -2- and towed the bare crankshaft with balance weights. This made no difference, the boom was still there slightly at the same speed. From other tests we have done it can be said definitely that… | ||
| 07-page098 | Experimental arrangement for a bearing behind the flywheel. | ||
| View original record | HS. FROM DA. X7300 DA3/M23.4.31. P. 2. FLYWHEEL. Some while ago we sent you a print of N. sch. 3236. shewing the beginnings of an experimental arrange-ment of a bearing behind the flywheel. Since R.… | ||
| 07-page099 | Issue of sticking cones in a synchro-mesh gearbox, referencing Buick's lapping process. | ||
| View original record | REC. FROM DA/HY. X7310 DA/HDY1/M19.9.31. X523 X7310 X5310 C. to HS. BY. DA. SYNCHRO MESH GEARBOX. STICKING OF CONES. We telegraphed to you yesterday to the effect that Buicks lay much stress on the… | ||
| 07-page100 | Inner sleeve alignment and the use of a bronze stirrup to reduce gear friction. | ||
| 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… | ||
| 07-page101 | Success of a new synchromesh gearbox with a silent 3rd gear. | ||
| View original record | HS.) FROM R. BY.) C. to SO. WOR. C. to DA. RHC. X4310 RL/M26.9.31. X.523 X.7310 X.8010 X.4027 CAR GEARBOXES - SYNCHRO MESH. WITH SILENT 3rd. (New name wanted) This seems to be an unqualified success,… | ||
| 07-page102 | Adoption of a synchro mesh gearbox and proposing a new design using epicyclic units. | ||
| View original record | COPY. X7310 HS. DA/HDY. } FROM R. R1/M8.10.31. X523 Sent off 28.10.31. X5310 X7310 C. to Sg. WOR. BY. C. to MR. CLAREMONT. CHANGE GEARS. We are up against a loss of RR. dignity in adopting the synchro… | ||
| 07-page103 | Proposed scheme for gearbox improvements, including synchronised brakes and epicyclic units. | ||
| 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… | ||
| 07-page104 | Development and implementation of an easy change gearbox with synchromesh for various car models. | ||
| View original record | Hs X7310 To R. from Sg. re Easy Change Gearboxes. Sg8/E21.10.31 Copy to Mr. 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 ask… | ||
| 07-page105 | Development of synchromesh and epicyclic gear units for the P.2. model. | ||
| View original record | COPY. X7310. SG. } FROM R. HS. } BY. } R2/M22.10.31. X7310. -------------------- C. to WOR. DA. E. P. 2. - L.H. & R.H. EASY AND SILENT CHANGE. -------------------- You are quite right; we intended to… | ||
| 07-page106 | Urgency of scaling up the 20/25 gearbox to suit the Phantom II Easy and Silent Change. | ||
| View original record | HS X7310 RECEIVED OCT 23 To Wor. From Sg. Copy to Hs. BY. re P.II Easy and Silent Change. SgE/E23.10.31 You will doubtless have been pleased to see R2/M22.10.31. I hope that this will enable BY's… | ||
| 07-page107 | Design and testing of a P.2 synchro mesh gearbox, comparing it to the 25HP model. | ||
| View original record | COPY. HS. FROM DA. DAL/M26.10.31. X7310 C. to SG. WOR. BY. P. 2. SYNCHRO MESH GEARBOX. We are laying out a synchro mesh engagement for the top and 3rd. speeds on P. 2. on the lines of the 25HP., and… | ||
| 07-page108 | Requesting the manufacture of a thin flange flywheel for a Phantom 11 test vehicle. | ||
| View original record | X7300 To RHC. From Hs/Gry. Hs/Gry.6/MJ.29.10.31. PHANTOM 11 FLYWHEEL. Will you please make a thin flange flywheel to the accompanying print. W.W. wish us to test this and we should like it fitted to… | ||
| 07-page109 | Requesting the removal of overhanging bosses on the sliding pinions for the Phantom II gearbox. | ||
| View original record | To RHC. From Hs/Gry. X/310. Hs/Gry.1/MJ.2.11.31. PHANTOM II GEARBOX. W.W. have asked us to remove the overhanging bosses on the sliding pinions. Will you please do this as shown on Hs.460 to 25-EX.… | ||
| 07-page110 | Blueprint of a modified component cross-section, detailing the removal of two bosses. | ||
| View original record | Hs 460 MODIFICATIONS TO G76602/3 1.925 1.025 .150 BOSS REMOVED .200 BOSS REMOVED .900 1.800 | ||
| 07-page111 | Test on the Phantom II synchro-mesh gearbox with a heavier clutch member. | ||
| View original record | 87310 To H. From Hs/Gry. c. to Sg. Wor. c. to S. Ds. c. to By. PHANTOM II SYNCHRO-MESH GEARBOX. As requested in Dal/M26.10.31. we have carried out a test on the 25 HP. synchromesh gearbox using a… | ||
| 07-page112 | Difficulties with clutch stops on synchro-mesh gearboxes and the need for a brake. | ||
| View original record | To R. from Hs/Rm. c. Sg. c. Wor. E. c. Ps. PV. X7480 Hs/Rm.1/AMG.11.11.31. X.7480. X.5480. CLUTCH STOPS. During the test on Japan III synchro mesh gear box having a driven plate fitted with a similar… | ||
| 07-page113 | Postponement of the automatic clutch spigot lubrication on the 40/50 model due to oil leaks. | ||
| View original record | By. from Hs/Rm. Y7480 Hs/Rm.2/AD3.12.31. x8m. AUTOMATIC CLUTCH SPIGOT LUBRICATION ON THE 40/50. The Test Dept. are complaining of oil leaks on the 40/50 due to excessive oil running in the clutch case… | ||
| 07-page114 | Instruction to abandon automatic clutch spigot lubrication for 20/25 HP and 40/50 HP models. | ||
| View original record | Copy BY/TWD. c. MX. c. EP. c. HS. X5480 BY.10/G.4.12.31. X872. X5480 X7480. 20/25 HP. and 40/50 HP. - AUTOMATIC CLUTCH SPIGOT LUBRICATION. ------------------------------------------- The Experimental… | ||
| 07-page115 | Test report on a PII synchromesh gearbox with modified 1st and 2nd gears. | ||
| View original record | DA FROM Hs/Gry. r7310. O.HS/Gry.6/MA. 7.12.31. PII SYNCHROMESH. As requested in DA1/M31.10.31, we have tried out a set of 1st and 2nd gears with the overhanging bosses removed as shown on Hs.460 on a… | ||
| 07-page116 | Blueprint showing a cross-section of a component with dimensions and modification notes. | ||
| View original record | Hs 460 MODIFICATIONS TO G76602/3 1.925 1.025 .150 BOSS REMOVED .200 BOSS REMOVED 1.800 .900 STAMP: ROLLS-ROYCE LIMITED AERO DETAIL 7 DEC 31 DERBY | ||
| 07-page117 | Comparison of 40/50 clutch spring specifications relative to 25 HP clutch slipping. | ||
| View original record | Copy for files. X7480 6. 1. 32. X5480 40/50 CLUTCH SPRINGS. POSITION RELATIVE TO 25 HP CLUTCH SLIPPING. Drawing length of Clutch Spring. 4.100 " Rating " " 142 lbs. " Load in position. 220 lbs. Actual… | ||
| 07-page118 | The cause and proposed solution for a clutch pedal rattle on the Phantom II. | ||
| View original record | X7480 To Hs. From Hs/GWH. c. to E. Hs/GWH.5/MJ.17.2.32. PHANTOM II - RE CLUTCH PEDAL RATTLE. We have found that the rattle is caused by the wear of the pins in the links, coupling up to the clutch.… | ||
| 07-page119 | Implementation of synchromesh and clutch brakes in 20/25 and 40/50 gearboxes. | ||
| View original record | To E. from Sg. Copy to Wor. Hs. re Synchromesh. Sg13/E6.5.32. In a telegram received from R. he says: "Difficult to have both synchromesh and clutch brake must allow latter to operate only on lower… | ||
| 07-page120 | Necessity and application of a clutch brake with the introduction of synchromesh gearboxes. | ||
| View original record | Handwritten: X7480, x3310, Sg3/Ell.5.32, x7310, x7310 Faded Header: To E. From SM. re Chromesh. To Wor. Hs. The Brake. Sg. from E. c. Wor. Hs. E.1/HP.7.5.32. Referring to E.1/HP.7.5.32, it is correct… | ||
| 07-page121 | Addition of a clutch brake to synchro-mesh gearboxes. | ||
| View original record | Y7480 To Sg. From Hs. c. to E. c. to Wor. c. to PM. Hs.4/WJ.11.5.32. SYNCHRO MESH AND CLUTCH BRAKE. X7310 Replying to Sg.3/E11.5.32. All cars both 25 HP. and P.11 which have been fitted with the… | ||
| 07-page122 | Trial results and implications of implementing a synchromesh and clutch brake system. | ||
| View original record | To HS. from Sg. Copy to Wor. E. PN. 87480 re Synchromesh and Clutch Brake. Sg2/E20.5.32. X.7310 X.5310 X.7480 Referring to Hs.4/WJ.11.5.32. I did not write anything further about this at the time… | ||
| 07-page123 | Decision to not fit a clutch brake on the Phantom II with the synchromesh gearbox, while retaining the housing features for future refitting. | ||
| View original record | 87480. By. From Hs/Gry. Hs/Gry.3/MA.23.5.32. x7310. P.II CLUTCH BRAKE. With the synchromesh gear box we shall not fit a clutch brake on P.II. We wish however to retain the features in the clutch… | ||
| 07-page124 | Request to manufacture three sets of Phantom II clutch springs following a failure on car 19-EX. | ||
| View original record | RHC. From Hs/Gry. x 7300. Hs/Gry.6/MA.17.6.32. P.II CLUTCH SPRINGS. Will you please make 3 sets of springs to the accompanying sketch Hs.652. We wish to fit one set of these to 19-EX either before the… | ||
| 07-page125 | Specifications for a Phantom II clutch spring. | ||
| View original record | Hs 652 DIA OF WIRE .232 - 4 S.W.G INSIDE DIA OF HELIX 1.000 ±5 8 WORKING COILS WITH HALF A COIL GROUND SQUARE EACH END) MAKING A TOTAL OF 9 COILS Ld) WHEN COMPRESSED TO 2.550 TO BE 253 lbs +5 lbs FREE… | ||
| 07-page126 | Abnormal clutch fabric wear on the 40/50 model during testing in France. | ||
| View original record | X 300 From Hs/GWH. c. to c. to Hs. Hs/GWH.1/KT. 20.6.32. Re. 40/50 CLUTCH. We have experienced abnormal wear of the clutch fabrics on 19-EX during the 7,000 miles run in France. There are two possible… | ||
| 07-page127 | Clutch friction coefficients, proposing a test for losses, and comparing Phantom and 25HP models. | ||
| View original record | HS. FROM DA. X7300 DA1/M21.6.32. X.5300. X.7300. CLUTCHES. We have discussed with R. the question of the co-efficient of friction shewn by our clutches, and he suggests that we should carry out a test… | ||
| 07-page128 | Request to manufacture washers of specific thicknesses for Phantom II clutch tests. | ||
| View original record | To RHC. From Hs/Gry. X-300 Hs/Gry.1/MJ.23.6.32. P.11 CLUTCH. Will you please make washers to G.76532 but of the following thickness - 16 off .048 ) or the nearest 48 off .024 ) possible gauge. This is… | ||
| 07-page129 | Requesting a report on a received P. 2 clutch disc to understand the conditions that caused its state. | ||
| View original record | X7300 HS. FROM DA. DA1/M5.7.32. We have received a P. 2 clutch disc, but there is nothing to indicate what conditions produced that state it is in. Could you let us have a report so that we may take… | ||
| 07-page130 | Potential improvements and issues with clutch designs, including pressure plates and friction materials. | ||
| View original record | HS. FROM R. RL/M5.7.32. C. to SG. WOR. BY. E. DA. re. CLUTCHES. X.5300 X.7300 For my own driving, as a weak man, the pressure on 16-G-4 is as much as I can maintain in driving, and therefore should… | ||
| 07-page131 | Impact of synchromesh gearboxes on clutches and proposed pedal modifications. | ||
| View original record | R. from Hs. c. Sg. Wor. c. E. Da. c. Ev. X7300. Hs.1/AD6.7.32. CLUTCHES. With reference to the attached report, it is positive that the introduction of the synchromesh box is going to give the clutch… | ||
| 07-page132 | Technical memorandum discussing clutch pedal pressures on the Phantom II and 25HP models. | ||
| View original record | S. From Hs/Gry. c. to SS. Mor. c. to S. De. c. to SV. HS/Gry.11/MA.5.7.32. CLUTCHES P.II AND 25HP. We are sending you this information about clutches as we consider that the pedal pressure on our cars… | ||
| 07-page133 | Analysis of clutch separation, torque transmission, and slipping issues across various models. | ||
| View original record | -2- WE/Gez.11/dm.9.7.32.Cont'd. We have measured the actual clutch separation on a L.H. Chassis and find it to be .061 against a drawing figure of .087. The losses were measured to be as follows :-… | ||
| 07-page134 | Reducing clutch slip and declutching effort, comparing clutch designs from competing manufacturers. | ||
| View original record | -3- Hs/Drw.11/M.S.7.32.Cont'd. clutch slip after a synchromesh change of gear that we consider important. We think it desirable to reduce both the unit pressure on the Ferodo and the effort required… | ||
| 07-page135 | Proposed increase in clutch spring force for the 25HP and Phantom II models. | ||
| View original record | X-300. Da. From Hs/Gry. Hs/Gry.5/MA.7.7.32. x53 00. CLUTCH SPRINGS. As requested on the telephone the clutch spring force on the 25HP is 143 lbs which we propose increasing to 165 lbs. The P.II spring… | ||
| 07-page136 | Request for a sketch of the alterations required on the flywheel and ferrules for a Phantom II clutch on vehicle 58-GN. | ||
| View original record | To RHC. from Hs/Gry. x7300 Hs/Gry.5/KT.6.9.32. P.II. CLUTCH. Will you please let us have a sketch of the alterations that were required on the flywheel and ferrules on 58-GN, in order to fit the… | ||
| 07-page137 | Modifications required for the 58GN clutch to accommodate stiffened clutch fingers. | ||
| View original record | To Hs/Gry X7300 RHC.LOBE.7.9.32. 58GN CLUTCH The following modifications to existing parts were necessary in order to give working clearance for the stiffened clutch fingers HS 666 fitted to 58GN. HS… | ||
| 07-page138 | Modifications to address excessive clutch wear on the 13-MX car. | ||
| View original record | x7300 TO R. from Ms/Gry. c. SS. Wor. c. S. Da. c. Hy. Hdy. Ms/Gry.1/KT.7.9.32. P.II. CLUTCH. When 13-MX car first went to France with the synchromesh gearbox, excessive clutch wear was experienced.… | ||
| 07-page139 | Modifications to the flywheel and ferrules for the 40/50 Phantom II model. | ||
| View original record | Copied X7300. BY. from Hs/Gry. Hs/Gry.13/KT.10.9.32. 40/50 P.II. We send you herewith a sketch of the modifications required to the flywheel and ferrules that are necessitated by the stiffening clutch… | ||
| 07-page140 | Diagram showing modifications to a PII clutch required for stiffened clutch fingers. | ||
| View original record | HS 704. (1) 4 GROOVES .437" WIDE ADDED IN CLUTCH COVER G.78312. (2) LENGTH OF SLOTS IN CLUTCH WITHDRAWAL FERRULES G.76554 INCREASED BY .187". 1.225 .300 45° 4 GROOVES .437 WIDE. MODIFICATIONS TO PII… | ||
| 07-page141 | Fouling issue with the Autoklean filter on the 20-EX clutch. | ||
| View original record | RHC. from Hs/Gry. X7300. Hs/Gry.10/KT. 26.9.32. 20-EX CLUTCH. The D.O. have pointed out that the Autoklean filter cannot be operated as shown on Hs.687 owing to the pin fouling the clutch pedal. They… | ||
| 07-page142 | The continued failure of the Phantom clutch friction plate despite modifications. | ||
| View original record | R. from Hs/GWH. c. SS. Nor. c. S. Da. c. BY. Rdy. X7300 Hs/GWH.9/KE. 27.9.32. RE. PHANTOM CLUTCH. X7941 The position of the clutch is still not satisfactory with the stronger clutch springs fitted.… | ||
| 07-page143 | Drawing of a friction plate for a 9ex clutch, detailing modifications and dimensions. | ||
| View original record | WIDTH OF SLOT INCREASED TO .156, NO CHANGE IN EXTERNAL DIAMETER, METAL GATHERED IN FOLDS TOWARDS CENTRE OF EACH SECTOR, SHADED AREAS SHEW HOW INCREASE IN WIDTH OF SLOT HAS TAKEN PLACE, DRG DIMN .093,… | ||
| 07-page144 | The fitting of stronger clutch springs to synchromesh cars. | ||
| View original record | X 7300 BY. from Hs/Gry. c. to Mx. Hs/Gry.2/KT. 29.9.32. P.II. CLUTCH SPRINGS. We think it advisable that the stronger clutch springs Hs.652 should be fitted to as many synchromesh cars as possible. On… | ||
| 07-page145 | Suggestions for converting the P.2. clutch on the 19-EX model. | ||
| View original record | BY. FROM DA. V430D DAL/1430.9.32. C. to SG. WOR. HS. E. P. 2. CLUTCH. With reference to the trouble experienced with the P. 2. clutch on 19-EX, we send herewith N. sch. 3551, shewing suggestions for… | ||
| 07-page146 | Issues and design improvements for single-plate clutches, specifically regarding heat management and material choices. | ||
| View original record | HS. FROM R. X7300 R2/11.10.32. X3300 X7300 X4027 C. to SG. WOR. BY. E. CLUTCHES. We are all in agreement that it is necessary with single plate clutches to carry the asbestos on the driven plate. It… | ||
| 07-page147 | Testing modified clutches and patenting an improved actuating mechanism to fix known faults. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. E. DA. R5/M4.10.32. X.728 X.7300 X.5300 CLUTCHES. We understand that you have now the three modified clutches to test - i.e. one for each of P.2., 25 HP, and 18 HP - and… | ||
| 07-page148 | Modifications to the clutch pedal, holder, lever and footboard for the Phantom II Chassis. | ||
| View original record | c. Hg/Gry. BY/HEB1/M.13.10.32. PHANTOM II. CHASSIS. PEDALS SEC:7100. DASH, BRACKETS, AND FOOTBOARDS SEC:7130. With reference to your memo' Hs/Gry1/KT.7.9.32, informing us to fit 15% Stronger Clutch… | ||
| 07-page149 | Trial of a new damped flexible drive for the clutch. | ||
| View original record | X7300 BY. FROM DA. DA1/M2.2.33. C. to SG. WOR. HS. E. HDY. X.7300. X.5300 R. has suggested a damped flexible drive for incorporation in the clutch which seems to have the advantage of being not only a… | ||
| 07-page150 | Standardisation of various clutch components including springs, pedal, fingers, and operating lever. | ||
| View original record | RR 785 (10M) (30405. 21-4-32) BM. S/6382/4. X7300. COMPLETED 14.2.33. STANDARDISATION of CHASSIS PARTS. Date: 6.9.32. Description of Parts: CLUTCH SPRINGS Hs.652, CLUTCH PEDAL F.84379 CLUTCH FINGERS… | ||
| 07-page151 | Modifications to the clutch for an 8 Litre Phantom, including lightening the operation and fitting needle rollers. | ||
| View original record | X/7300 RHC. from Hs/Gry. Hs/Gry.4/KT.21.2.33. CLUTCH FOR 8 LITRE PHANTOM. We want to try and lighten the clutch operation on this unit with the new clutch to N.sch.3551. We send you herewith Hs.937… | ||
| 07-page152 | Drawing of a needle bearing clutch operation mechanism, part II. | ||
| View original record | Hs 937 ROLLS-ROYCE PRINT ROOM FEB 21 1939 DERBY. G 80194 EXCEPT FOR .360 DIA HOLE .360 DIA G 80198 MODIFIED 14 ROLLERS .102 DIA NEEDLE BEARING CLUTCH OPERATION - PII [N.Sch 3551] | ||
| 07-page153 | Relative importance of friction losses in clutch operation. | ||
| View original record | X7350 E. from Hs/Gry. Da. Hs/Gry.6/KT.9.3.35. CLUTCH OPERATION. We have gone into the relative importance of the friction losses of the clutch fingers due to scrubbing of the short end and bearing… | ||
| 07-page154 | Insufficient separation in the Phantom II clutch and suggesting a reduction in tolerances for production. | ||
| View original record | X7300 BY. from Hs/Gry. c. Mx. Hs/Gry.12/KT.9.3.33. P.II. CLUTCH. Mx. has complained of insufficient separation on the 40/50 clutch. This we find is due to excessive movement of the inner cushioning… | ||
| 07-page155 | Suggested modifications to the P.2. clutch for the 10,000 mile car. | ||
| View original record | GRY See me To BY. from Da. Da.3/HP.28.12.33. c. Wor. E. Hs. Hey. X 7300 P.2. Clutch. ---------- Herewith is N. Sch.3925 showing the suggested modifications to the P.2. clutch for the 10,000 mile car.… | ||
| 07-page156 | The necessity of an external clutch adjustment for the Phantom model, referencing owner complaints. | ||
| View original record | X7309 By. from Hs/Gry. Hs/Gry.5/KWS.1.34. Phantom Clutch Adjustment. Referring to Da.3/HP.4.1.34, we think that this external clutch adjustment is very necessary in view of the complaints we have had… | ||
| 07-page157 | Clutch design, comparing American and English operating conditions and design philosophies. | ||
| View original record | X7300 W/S. To Sg. from E. c. Wor. Hs. E.8/HP.24.2.34. re Clutches. Replying to your memo Sg.4/E.21.2.34, we are analysing the American experience very carefully, and as it will not be long before Hm.… | ||
| 07-page158 | New clutch adjustment method for future production cars, intended for owner convenience. | ||
| View original record | x7300 To Hd. HS/GWH.7/KW.12.3.34. Clutch Adjustment. Reference: BY.9/G.7.3.34. On all future production Cars, Phantom, 25 HP., Bentley, arrangements are being made to adjust the clutch by the outside… | ||
| 07-page159 | Requesting a change of material from steel to Milanite for three flywheels. | ||
| View original record | RHC. Hs/Gry.5/KW.11.4.34. You are making for us a further three flywheels, to EX.12846, as fitted to P.V.4. We should like to try these made in Milanite, with the starter ring shrunk or bolted on. We… | ||
| 07-page160 | Standardisation of parts for an external clutch adjustment and modification to a coupling. | ||
| View original record | RR 785 (SH) (52674, 16-10-33) BM. 3/262/6. COMPLETED 18.6.34. 40/50 STANDARDISATION of PARTS. Date 28.5.34. 1.6.34. X No. 7300. Drawing No. N.S. 3936 Part List Description of Parts. EXTERNAL CLUTCH… | ||
| 07-page161 | Estimated cost for extra jigs, tools, and equipment for the 'T' series chassis. | ||
| View original record | STANDARDISATION OF PARTS Est. cost of extra jigs, tools and equipment.(Sft/Ws.11.5.34) £56.0.0. Could be brought on to production at 1st chassis in 'T' series. (Sft/GH.11.5.34) without scrap… | ||
| 07-page162 | Standardisation of bifurcated rivetting for clutch linings to reduce cost. | ||
| View original record | RR 788 (SH) (S2674. 16-10-33) BM. 3/262/6. COMPLETED 21.6.34. 40/50 STANDARDISATION of PARTS. Date 10.5.34 X No. 7300 Drawing No. Part List Description of Parts. BIFURCATED RIVETTING OF CLUTCH… | ||
| 07-page163 | Cost estimation for introducing new jigs and tools for the 'T' series chassis production. | ||
| View original record | Title (written in reverse): STANDARDISATION of PARTS. Sft/Ws. 16.5.34 IX Est. cost of extra jigs, tools and equipment. (Sft/Ws.16.5.34). Negligible. Could be brought on to production at 1st chassis in… | ||
| 07-page164 | Phantom II clutch operation, specifically a ball-ended link and bracket for Terraplane-type engine mountings. | ||
| View original record | K7300 To BY. from Da. Da.1/HP.21.7.34. c.c. for W. Hs. Mr. Hives. Phantom II Clutch Operation. Herewith is N. Sch.4139 shewing the ball ended link connecting the cantilever pedal structure with the… | ||
| 07-page165 | Report seeking an opinion on clutch fierceness in vehicle 28-EX, suspected to be caused by engine movement opening the throttle. | ||
| View original record | Hs/Wym. X7300 Hs/Rm.5/KW.26.7.34. Gry. reported that when he had 28-EX for the week-end before leaving for France, a certain amount of the clutch fierceness was due to the engine movement opening the… | ||
| 07-page166 | Issue where oil feed to the clutch trunion is blown away at high engine speeds. | ||
| View original record | Please return to file c. Hs by man. Can we confirm this. Rm re CHASSIS - CLUTCH, TRUNION & OIL FEED It has been noted by the Inspector on the Dynamometer Test that when running at high engine speed… | ||
| 07-page167 | Note requesting recommendations for a chassis issue involving the clutch, trunnion and oil feed. | ||
| View original record | Hs/Bwg. x7300 Hs/Rm.13/KW.2.3.35. Re: Chassis - Clutch, Tunnion & Oil Feed. With reference to the attached note, EP.20/MH.22.2.35, Wym. has confirmed that this is happening, and we should therefore… | ||
| 07-page168 | Proposing modifications to the Phantom II Clutch Trunnion Oil Feed system, including a sketch. | ||
| View original record | 47300 To By. HE/Bwg.18/KW.14.3.35. Ph. II Clutch Trunnion Oil Feed. We have tried out two types of shield to prevent the oil from being carried away from the feed pipe by the air current set up by the… | ||