Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Test report on zinc alloy crankshaft journal and big-end bearings. | ||
| View original record | To R. From Hs/GIP. (Held up). c. to SG. Wor. c. to RS. S. c. to EY. *5010. HA/CHP.1/MWJ.26.3.30. X5070 Y5070 ZINC ALLOY BEARINGS. We have tested a set of crankshaft journal and big-end bearings of… | ||
| scan0002 | Engine bearing failure due to zinc-alloy growth at high RPM and a proposed solution. | ||
| View original record | -2- Hs/CBP.1/WJ.26.1.31. Contd. speed increased to 2000 R.P.M., upon which the crankcase became exceptionally hot and smoke issued from the breather. After twenty minutes running under these… | ||
| scan0003 | Strengthening a 20 HP chassis crankshaft to eliminate a 'bus' knock, noting it is still an experimental issue. | ||
| View original record | Hs. Mr. [crossed out] X5010. BY19/G.26.5.30. 20 HP. CHASSIS - CRANKSHAFT. -------------------------------- Mx. has reminded me of a point that slipped my memory previously viz. that when we step up on… | ||
| scan0004 | Test report on a 25 HP Nitralloy crankshaft for the China Engine C.11. | ||
| View original record | X5010. To F. From Hs./LS. c. to SS. Sor. c. to Rg. E. c. to BY. Hs/LS.1/U. 21.6.30. TEST OF NITRALLOY CRANKSHAFT 25 HP. (CHINA ENGINE C.11.) SPECIFICATION OF UNIT. - E.55399 Nitralloy crankshaft. Low… | ||
| scan0005 | Comparison of wear marks on a standard crankshaft versus a Nitralloy crankshaft. | ||
| View original record | -2- He/L.S./31.8.31.Contd. A standard crankshaft, no matter how little running it has had, has slight groove marks running round shaft in same plane as oil feed holes but with the Nitralloy shaft… | ||
| scan0006 | Crankshaft webs fouling the stiffening ribs on the China Engine Unit. | ||
| View original record | To ~~BH~~ from RHC. c.. Hs. X5010. RHC3/BE2.7.30. RE: CHINA ENGINE UNIT. The China Engine Unit in which we have fitted the crankshaft with the larger diameter pins, trouble has been experienced with… | ||
| scan0007 | Potential solutions for crankshaft vibration in a 25HP engine when approaching 70MPH. | ||
| View original record | HS. FROM R. X5010 CONFIDENTIAL R3/M1.10.30. Copy to SG. Copy to WCR. Copy to BY. Copy to E. Copy to C. 25HP. CRANKSHAFT VIBRATION IN APPROACHING 70MPH. X.634. X.5010. Naturally we realise that this is… | ||
| scan0008 | Design decisions and improvements for the 25HP chassis and engine. | ||
| View original record | SG. } FROM R. HS. } X5010 R1/M11.12.30. C. to WOR. RG. C. to EY. 25HP. CHASSIS. X.5770. X.5010. X.5000. (1) It has been decided to keep this in its class by keeping the bore 3.250 so that the chassis… | ||
| scan0009 | List of proposed engineering changes and improvements to various engine and chassis components. | ||
| View original record | (2) (d) Cast iron head with 6 separate inlet ports for better distribution and suitable for twin carburetters, larger valves, and much better passages, (and permits of double ignition at any time… | ||
| scan0010 | Outlining the features of a proposed balanced crankshaft for a 25 HP engine. | ||
| View original record | X5010. R. c. Sg. wor. By. c. Hs. E. RECEIVED 18 DEC 1930 H Rgl/ME.18.12.30. BALANCED CRANK FOR 25 H.P. Following the discussion with regard to the above when 'Rm' and I visited you at West Wittering… | ||
| scan0011 | Blueprint of a 20 HP crankshaft with 8 balance weights. | ||
| View original record | 20 H.P. CRANKSHAFT WITH 8 BALANCE WTS. ILLUSTRATING ARRANGEMENT OF 8 WTS TO BALANCE COUPLES: DRG. RM. 17 DEC. 1930 OF FSA 16/12/30 Measurements: 4.000 2.250" 1.650 1.200 1.200" 1.625" 1.600 2.500"… | ||
| scan0012 | Proposed design and trial of an interlaced crankshaft for 6 and 12 cylinder engines. | ||
| View original record | RG. HS. } FROM R. X/6010 RL/M1.12.30. BY. EFC. Copy to SG. WOR. INTERLACED CRANKSHAFTS. X.6010 X.5010. X.634. Some time ago I schemed what we termed the interlaced 6 throw crankshaft. This is not the… | ||
| scan0013 | Crankshaft balancing, materials, and vibration issues for 25HP and 45HP engines. | ||
| View original record | E. BY.} FROM R. HS. } (At Le Canadel.) X5010 R2/M20.12.30. __________ X.7000 X.634 X.5000 X.7010. X.5010 C. to SG. WOR. C. to RG. DA. 25HP. AND 45HP. ENGINES. We have now settled that we must not use… | ||
| scan0014 | Engine and suspension improvements for the 25HP and 45HP models. | ||
| View original record | (2) One feels that in the improvements we are introducing in the 25HP. all the above will be incorporated. For the 45HP. we need to test the present shaft with the 4 system of balance, using… | ||
| scan0015 | Design and balancing of a 25HP & 45HP crankshaft. | ||
| View original record | E. RG.) FROM R. BY. HS.) (At Le Canadel.) .Copy to SG. WOR. V5010 R2/M23.12.30. X.5010. X.7010. 25HP. & 45HP. BALANCED CRANKSHAFT. X.634. We thank RG/TSN. for his work, and blueprint of 18/12/30, and… | ||
| scan0016 | Engine crankshaft balancing, counterweights, and flywheel modifications for smoother high-speed operation. | ||
| View original record | (2) I should keep down the angular dimensions of the weight even if it asked for a slightly larger radius. Although it is better for the master period to keep the radius small I should favour a… | ||
| scan0017 | Polar diagrams of big end bearing loads for the Condor III engine. | ||
| View original record | N.SCHEME 1581. C OF "A" UNIT CYL: C OF "B" UNIT CYL: POLAR DIAGRAMS OF BIG END BEARING LOADS. CONDOR III. S.L.G. 18-5-23 1900 R.P.M. ---- = I.M.E.P. = 0 LBS / □'' ----- = I.M.E.P. = 161 1/2 LBS / □''… | ||
| scan0018 | Polar diagram of main bearing loads for the Condor III engine. | ||
| View original record | 'N' SCHEME. 1583 POLAR DIAGRAM OF MAIN BEARING LOADS CONDOR III DIAGRAM OF CRANKS ¢ OF 'B' UNIT CYLS IMEP { MAX PRESS 772 LBS/□" 0 LBS/□" { MEAN PRESS 656 LBS/□" --- IMEP = 0 LBS/□" — IMEP = 16 1/2… | ||
| scan0019 | Polar diagram showing the main bearing loads for the Condor III engine. | ||
| View original record | N.SCHEME 1582 POLAR DIAGRAM OF MAIN BEARING LOADS. CONDOR III. S.a.g. 17-5-23. N.SCHEME 1582. Left Diagram Data: I.M.E.P. { Max. Press - 780 LBS/D", 0 LBS/D" { Mean Press - 657 LBS/D" ¢ OF B UNIT… | ||
| scan0020 | Polar diagram of main bearing loads for the Condor III engine at 1900 R.P.M. | ||
| View original record | D.E.S. 487. ¢. OF 'B' UNIT CYLS. ¢. OF 'A' UNIT CYLS. 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 LBS/□". ----- I.M.E.P. = 0 LBS/□". _____ I.M.E.P. = 161 1/2 LBS/□". DATA. CONN. ROD… | ||
| scan0021 | Polar diagram showing the main bearing loads for the Condor III engine. | ||
| View original record | D.E.S. 486 ¢ OF "B" UNIT CYLS. ¢ OF "A" UNIT CYLS. DIAGRAM OF CRANKS ARRANGEMENT OF BEARINGS I.M.E.P. = 0 LBS./□" MAX PRESS = 704 LBS/□" MEAN PRESS = 571 LBS/□" 1900 R.P.M. Nº 1 & Nº 7 BEARINGS 3.000"… | ||
| scan0022 | Resetting the friction load on a low inertia crankshaft damper. | ||
| View original record | To RHC. From Hs/Rn. X5010. Hs/Rn.5/MJ.13.1.31. 12-G4. LOW INERTIA CRANKSHAFT DAMPER. We understand that the friction load of this damper when checked up had fallen to 3 lbs. Will you please re-set it… | ||
| scan0023 | Torsional periods found on a 25 HP unit with 12 balance weights. | ||
| View original record | Copy for files. X5010. X.634. X.5010. TORSIONAL PERIODS ON 25 HP. WITH 12 BALANCE WTS. ------------------------------------- We have run the cast iron unit C.9 in 18.G.IV. with no damping in the… | ||
| scan0024 | Standardisation of chassis parts for the 20/25 HP Chassis, specifically the Low Inertia Spring Drive. | ||
| View original record | RR.788 (10H) (3-7-30) BM. 6/2571. X5020. COMPLETED 4.12.31. STANDARDISATION of CHASSIS PARTS. Date 15.1.31 Description of Parts. Low Inertia Spring Drive. Origin. To obtain more consistent results of… | ||
| scan0025 | Decision not to proceed with the production of a new part, including associated costs. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS As there is no likelihood of this coming on production, tool costs have not been gone into. The number of the first chassis on which the new part will be… | ||
| scan0026 | Tests on 25 HP crankshaft dimensions and critical speeds. | ||
| View original record | To R. From Hs/Rm. c. to Sg. Wor. c. to Da. E. c. to Rg. By. CRANKSHAFT DIMENSIONS. 25 HP. It will be remembered that during a recent visit to West Wittering the question of the optimum crankshaft… | ||
| scan0027 | Report analyzing crankshaft pin sizes, balance weights, and their effect on critical speed and inertia. | ||
| View original record | (2) how much pins of this size increase the bearing loads unless balance weights are fitted. This trouble did not occur on the smaller pin crankshaft when run at the same speed. It will be noted that… | ||
| scan0028 | Design of a crankshaft damper and spring drive for the Japan 3 project. | ||
| View original record | X5010 R. FROM E. E1/M15.1.31. Copy to SG. " WCR. " HS. " BY. JAPAN 3. - CRANKSHAFT DAMPER AND SPRING DRIVE. X.5010. X.5020. HS. has been telling us of a crankshaft damper made in the states for… | ||
| scan0029 | Design of a simplified crankshaft damper and spring drive for the Japan 3 project. | ||
| View original record | R. FROM E. X8020 E1/M15.1.31. Copy to SG. " WOR. " HS. " BY. JAPAN 3. - CRANKSHAFT DAMPER AND SPRING DRIVE. X.5010. X.5020. HS. has been telling us of a crankshaft damper made in the states for… | ||
| scan0030 | Design improvements for the 'Japan Engine', focusing on crankshafts, bearings, and structural stiffness. | ||
| View original record | E. HS. } FROM R. BY. } (At Le Canadel.) X5010. R1/M21.1.31. C. to SG. WOR. HY. JAPAN ENGINE. X.5250. C. to RG. RHC. X.634. X.5770. X.5010. If it is necessary for the sake of flywheel vibrations to… | ||
| scan0031 | Sketch of a starter handle shaft tube and a telegram discussing design simplification for economical production. | ||
| View original record | (2) RADIATOR. Starter handle shaft passes along this tube. seems better to have tube below transmission line. Starter handle shaft is always in P. 2. because of buffers. I have no dimensions, but… | ||
| scan0032 | Confirmation of a telegram suggesting tests on available China crankshafts with different pin diameters. | ||
| View original record | X5010 CONFIRMATION OF TELEGRAM. Copy to SG. " R. " WOR. " BY. WW. 22. 1. 31. HIVES. ROYCAR. DERBY. REGARDING HS/RM2/KT15131. SUGGEST SIMILAR TESTS ON THE AVAILABLE. CHINA CRANKSHAFTS WITH DIFFERENT… | ||
| scan0033 | Revisions to the Japan 3 general engine scheme, specifically regarding shaft diameters and cylinder skirts. | ||
| View original record | R. FROM E. C. to SG. WOR. C. to HS. BY. X5010 E3/M22.1.31. JAPAN 3 - GENERAL SCHEME OF ENGINE - LeC. 2853. X.5770 X.5010. We have not hastened to send you a print of the above as we considered that… | ||
| scan0034 | Telegram from Elliott to Hives suggesting tests on available China crankshafts with different pin diameters. | ||
| View original record | 198 12s2 WEST WITTERING CH/A 18. HIVES ROYCAR DERBY = REGARDING H.S/RM- 2/ -K-T- 15131 SUGGEST SIMILAR TESTS ON THE AVAILABLE CHINA CRANKSHAFTS WITH DIFFERENT PIN DIAMETERS = ELLIOTT + | ||
| scan0035 | The 'Japan 3' crankshaft, attaching a print showing the pinion formed solid with the shaft. | ||
| View original record | RHC. FROM E. C. to SG. WOR. C. to HS. BY. HY. X5010 E2/M24.1.31. JAPAN 3. CRANKSHAFT. With reference to memo. R1/M21.1.31., we attach herewith a print of the rear end of the crank shewing pinion… | ||
| scan0036 | Design of crankshaft pinions and timing gears to address flywheel vibration issues on a 25HP engine. | ||
| View original record | R. FROM E. X8070 E1/M26.1.31. C. to SG. WOR. C. to HS. BY. JAPAN 3. TIMING GEARS. X.634. X. 5010. Please find attached copy of our telegram of even date re. crankshaft pinion at rear end of crank… | ||
| scan0037 | Four comparative cross-sectional sketches of a journal and flywheel flange with annotations. | ||
| View original record | ① ② ③ ④ PRESENT CHINA JOURNAL 2.125" 2.25 2.6 1.0" 2.5 12 5/16" BOLTS FLYWHEEL FLANGE 2.3 10 5/16" STUDS OR SET SCREWS. | ||
| scan0038 | Sending an experimental double rear crank bearing for testing on a 20/25 engine. | ||
| View original record | HS. FROM E. C. to SG. C. to R. C. to BY. X8010 E1/M27.1.31. JAPAN 3. - DOUBLE REAR BEARING. X.634. X.5010. Referring to the last paragraph of memo. E1/M26131. to R., we send you herewith LeC. 2870. sh… | ||
| scan0039 | Investigation into three schemes for crankshaft balance weights for the 'China IV' engine, including a comparative table of bearing loads. | ||
| View original record | X5010 R. at Le Canadel C. Sg. Wer. C. Hs. Hr. Rg/Tsnl/DM.9.3.31. Crankshaft Balance Weights for China IV. We have investigated the three schemes for the above shown on the attached Fig.I. There are… | ||
| scan0040 | Comparative load tests on a new crankshaft design (Des.1364) and the instruction for a new shaft for development. | ||
| View original record | -2- The comparative loads at 2900 R.P.M. and at 3200 with the new crankshaft (Des.1364) and articulated rods were obtained by drawing crankshaft loading diagrams. Designs are in hand and a shaft will… | ||
| scan0041 | Blueprint comparing three different balance weight schemes. | ||
| View original record | BALANCE WT. SCHEMES. SCHEME I. SCHEME II. SCHEME III. 1/2 SIZE WTS. FULL SIZE WTS ① ② ③ T.E.H. 9/3/21. | ||
| scan0042 | Secret memorandum discussing design proposals for a crankshaft damper and engine suspension system. | ||
| View original record | R. FROM E. SECRET E5/M14.3.31. X8010 C. to SG. WOR. C. to HS. BY. HY. Japan 3. Crankshaft Damper & Engine Suspension. x.5010. X.5005. Please find prints of LeC. 2887. and 2888., shewing some proposals… | ||
| scan0043 | Technical note on the application and effects of crankshaft balance weights for aero and car engines. | ||
| View original record | X5010 x7010. X5010. RECEIVED 9 APR 1931 c. Sg. Wor. c. Hs. By. Rg/Tsnl/DM.2.4.31. Crankshaft Balance Weights. --------------------- Our previous note with regard to the above referred to aero engines.… | ||
| scan0044 | Analysis of crankshaft balancing schemes for a 7-bearing, 6-cylinder engine. | ||
| View original record | -2- We have investigated the Japan III. crankshaft, and this would appear to be capable of being fully balanced. We think it should be definitely impossible to get on to the torsional period with… | ||
| scan0045 | Discussion and comparison of different crankshaft balancing schemes, including one for aero use and another used by Chrysler. | ||
| View original record | -3- C. R's latest Scheme. This is the lightest scheme and is the one we have adopted for aero use where we only balance about 40%. It takes the maximum amount of load off the centre main bearing. It… | ||
| scan0046 | Comparison of five alternative crankshaft balance weight schemes. | ||
| View original record | ALTERNATIVE BALANCE WEIGHT SCHEMES A .866W .866W W B .433W .433W .433W C .1250W .1250W .1200W D .1500W .1250W .250W .1250W .250W .1500W E .1500W .500W .500W .1500W .1500W .1500W W IS THE EQUIVALENT… | ||
| scan0047 | Comparison table of bearing loads for various crankshaft balancing schemes. | ||
| View original record | COMPARISON OF BRG. LOADS. TABLE HEADER: TOTAL WEIGHT OF BALANCE WEIGHTS, BEARING LOADS., 1 & 7, 2 & 6, 3 & 5, 4. ROW A: A. 4 WTS. BALANCING COUPLE ONLY, 3.48W, .500, .500, .500, 1.000. ROW B: B. 8 " "… | ||
| scan0048 | Secret memo referencing a print about crankshafts and bearings. | ||
| View original record | X5010 R. FROM E. SECRET. E1/M9.4.31. C. to SG. WOR. C. to HS. BY. HY. J. 3. CRANKSHAFT & BEARINGS. Please find herewith print of LeC. 2890., shewing the above. E. | ||
| scan0049 | Objectives and different schemes for using engine balance weights. | ||
| View original record | RG/TSN. E.) FROM R. HS. BY.) (At Le Canadel.) R1/M12.4.31. ALL ENGINES - BALANCE WEIGHTS. X.5010. X.7010. (1) Our first object of these is to reduce crankchamber stresses and deflections. (2) Our… | ||
| scan0050 | Request to fit an eight balance weight scheme on a large pin 25 HP crankshaft. | ||
| View original record | X5010. Ey. from Hs/Rm. Hs/RM1/AD4.5.31. X5010. X634. During our recent visit to West Wittering R. asked us to arrange for his eight balance weight scheme to be fitted on to the large pin 25 HP.… | ||
| scan0051 | Scheme detailing the balance weight setup for a 25 HP shaft. | ||
| View original record | Y 50101 8 Balance Weight Scheme for 25 HP Shaft. E.55619 (Big Pin) All balance weights set at 180° to position of crankpin. Nos. 1, 6, 7, 12, of 1 unit each to balance 1/2 of the out of balance per… | ||
| scan0052 | Data sheet detailing torsional periods, balance metrics, and weights for Phantom II and 25 HP engine components. | ||
| View original record | 85010 May 1931. X.634. X.7010. X.5010. FILES. USEFUL DATA. P.II. Torsional period at 100 m.p.h. or 3900 r.p.m. standard crankshaft. Torsional period of chamfered shaft WET with 12 weights to LeC.2616… | ||
| scan0053 | Road tests of a 25 HP crankshaft to determine its critical speed and torsional oscillation. | ||
| View original record | To R. From Hs/Rm. c. to Eg. Nor. c. to Da. E. c. to By. X5010. Hs/Rm. 3/RT. 9. 5. 31. LARGE PIN 25 HP. CRANKSHAFT. We have been carrying out road tests on this crankshaft to determine its critical… | ||
| scan0054 | Blueprint for a Crankshaft Balance Weight for a 20 HP Chassis. | ||
| View original record | SCH. 1402 THE SIZE OF THE BALANCE WEIGHTS ARE SUCH THAT THEY BALANCE THE CRANK PIN WEBS AND CRANK PIN DETAILS, BUT NOT THE CONN: ROD. CRANKSHAFT BALANCE WEIGHT. SCALE 1/1 20 H.P. CHASSIS, SCH. 1402… | ||
| scan0055 | Technical memorandum detailing component specifications and modifications for the 25 HP - JAPAN 1 model. | ||
| View original record | By. Hs. From R. c. Sg. WGT. c. HV. RHC. X5010 R2/M12.5.31. X.5770 X.5010 X.634. 25 HP. - JAPAN 1. Bodies (Bonnet). This has always been for existing stock bodies. The extra length of bonnet is… | ||
| scan0056 | Modifications to the crankchamber, brakes, rear axle, and petrol pump. | ||
| View original record | -2- Crankchamber. There is no alteration except that lower half has already been scalloped for larger pins - (last 10,000 miles test). Brakes. Will have swivelling tips (anti-squeak). Rear Axle. If… | ||
| scan0057 | Use and testing of balance weights on crankshafts for the 25 HP and Phantom II engines. | ||
| View original record | To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to Hy. Referring to - R.2/M12.5.31. As regards balance weights for the 25 HP. we have never yet received a scheme from W.W. to fit balance weights to this… | ||
| scan0058 | Crankshaft balance weights and critical speeds for the 25 HP and Phantom 11 engines. | ||
| View original record | -2- Hs.1/W.J.16.5.31.Cont'd In the case of the 25 HP. with the big pin crankshaft with twelve balance weights on, the master period is at 4,200 R.P.M. which can begin to be felt at 51 m.p.h. on third… | ||
| scan0059 | Schematic drawing and calculations for crankshaft balance weight schemes. | ||
| View original record | CRANKSHAFT E 55619 SUGGESTED SCHEME SCHEME 1402 STAMP: ROLLS ROYCE LIMITED PRINT ROOM 16 MAY 31 SCHEME 1402 - I PER WEIGHT = 27.1 IN⁴ (CRITICAL SPEED) = 4200 RPM [12 WTS] SUGGESTED - " " " = 12.55 IN⁴… | ||
| scan0060 | Engine smoothness, the effects of balance weights on the flywheel, and various weight schemes. | ||
| View original record | Hs. from R. c. Sg. Wor. c. Rg. E. X5010 R5/M18.5.31. ENGINE SMOOTHNESS X.634 X.5010 X.7010. It is understood that you are satisfied with the smoothness of our engine without in any way reducing the… | ||
| scan0061 | Design and experimentation of engine balance weights, comparing 8 and 12 weight schemes. | ||
| View original record | X5010 Rg. } FROM R. Hs. } c. Sg. Wor. c. Ev. E. R2/M19.5.31. BALANCE WEIGHTS. X.634 X.5010 X.7010 Referring to Hsl/MJ16.5.31, we are pleased to hear that these are vigorously being pushed forward by… | ||
| scan0062 | Flywheel balance weights and design improvements for the 25 HP engine. | ||
| View original record | R2/M19.5.31 contd. -2- the half weights are correct provided there is no error in the angle, which in the 8 weight scheme is not likely to occur. Regarding the 4 weight scheme we now see that this… | ||
| scan0063 | Technical memorandum on the effect of balance weights on flywheel wobble in Phantom II and 25 HP models. | ||
| View original record | X5010 To R. From Hs. c. to Sg. Wor. c. to K. Ds. c. to By. Hs.5/MJ.23.5.31. X634 X5010. X7010. BALANCE WEIGHTS P.2 & 25 HP. Effect of Balance Weights on Flywheel Wobble. PHANTOM 11. On Phantom 11… | ||
| scan0064 | Flywheel and crankshaft testing, comparing performance with 0, 6, and 12 balance weights. | ||
| View original record | -2- Hs.5/WJ.23.5.31.Cont'd. then removed all balance weights. The flywheel period was then definitely worse and was spread over a wider range of speed. We then fitted the 6 balance weights. With these… | ||
| scan0065 | Request to rebuild a cast iron crankcase unit with parts from a 16-G4 engine. | ||
| View original record | COPY. 5000 To RHC. From Hs/Rm. Hs/Rm.6/KT.27.5.31. CAST IRON CRANKCASE UNIT. Will you please rebuild this unit with the crankshaft and flywheel which came out of 16-G4. engine. This will necessitate… | ||
| scan0066 | Requesting the production of twelve balance weights for a 25 HP crankshaft. | ||
| View original record | X 5010. To RHC. From Hs/Gry. Hs/Gry.5/MJ.29.5.31. BALANCE WEIGHTS. Will you please make a set of twelve balance weights to Hs.359 for fitting to the big pin 25 HP. crankshaft. These weights balance… | ||
| scan0067 | Fitting twelve balance weights to the big pin 25 HP crankshaft. | ||
| View original record | 85010. To RHC. From Hs/Gry. Hs/Gry.10/MJ.29.5.31. BALANCE WEIGHTS. Further to Hs/Gry.5/MJ.29.5.31., we shall fit twelve of these to the big pin 25 HP. crankshaft. Approximate weight complete with stud… | ||
| scan0068 | Insufficient material found on 20/25HP crankshaft forgings and the necessary alterations to existing dies. | ||
| View original record | 85010, To EP. from RHC. c. Hs. c. BM/SS. RHC7/BE9.7.31. Re: 20/25 Crankshaft On examination of the standard 20/25HP. crankshaft forgings we find there is insufficient material for the balance weight… | ||
| scan0069 | Experiments using balance weights to eliminate flywheel vibrations on a 25 HP engine. | ||
| View original record | X.5010. X.634. γ 5010. Ha/Gry.2/MJ.22.7.31. To R. From Ha/Gry. c. to Sg. Wor. c. to Da. E. c. to By. 25 HP. BALANCE WEIGHTS & FLYWHEEL VIBRATIONS. We have previously tried balance weights on 16-G4 to… | ||
| scan0070 | Blueprint for balance weights for a 25 HP crankshaft. | ||
| View original record | Hs 359 1.625 3.062 +15 Rd 2.187 1.125 +15 BALANCE WEIGHTS FOR 25 HP CRANKSHAFT E55619 TO BALANCE CRANKSHAFT AND BIG ENDS FITTING DETAILS TO SCH 1402 OTHER DIMENSIONS TO SCALE SCALE 1/1 ROLLS-ROYCE… | ||
| scan0071 | Sketch of balance weights used on the big pin 25 HP crankshaft. | ||
| View original record | To E. From Hs/Gry. γ5010. Hs/Gry.6/MJ.23.7.31. Herewith sketch of the balance weights we used on the big pin 25 HP. crankshaft to balance both big ends and crankshaft and crankshaft details. The… | ||
| scan0072 | Modifications to the 25 HP crankshaft to improve high-speed smoothness. | ||
| View original record | To E. from Hs/Gry. 85010. Hs/Gry 2/AM.4.8.31. 25 HP. CRANKSHAFT. One of the means which we have found for getting high speed smoothness is to balance both the crankshaft and the big end. We did this… | ||
| scan0073 | Blueprint for a stiffer 2-inch pin crankshaft for a 25 HP engine. | ||
| View original record | SECTION CC Hs 419 CHAMFER .090 AT 45º ON ALL WEBS OTHER DIMENSIONS TO E 55619. THEN TO BE MACHINED TO SCH 1402 FOR BALANCE WEIGHTS TO Hs 359 INSIDE DIA OF JOURNALS .500 INSTEAD OF 1.125 .500 DIA. .250… | ||
| scan0074 | Proposal outlining potential performance improvements for the 25 HP car model. | ||
| View original record | To R. From Hs. c. Sg. c. Wor. E. c. Da. Ev. Y5010. Hs1/AM.5.8.31. X.5771. X.5010. INCREASED PERFORMANCE OF 25 H.P. If we can offer a 25 HP. car which has a maximum top speed of 75 M.P.H. it should… | ||
| scan0075 | Intentions and methods for balancing crankshafts, comparing different approaches. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. BALANCING CRANKSHAFTS. X5010 R4/M17.8.31. X. 7010 X. 5010 We are wandering from our original intentions. (1) We never expected to completely balance the crank and big… | ||
| scan0076 | Experimental crankshafts for the 20/25 HP chassis, concluding with a decision to alter the dies. | ||
| View original record | ROY. c. Wor. c. Hs. c. RHC. 85010 BY.2/G.19.8.31. 20/25 HP. CHASSIS - EXPERIMENTAL CRANKSHAFTS. Referring to ROY.13/MG.18.8.31. it appears practically certain that we shall have to order a further… | ||
| scan0077 | Internal memorandum discussing engine vibration issues on the 25HP model, focusing on balance weights and flywheel wobble. | ||
| View original record | HS. ) FROM R. BY. ) C. to SG. WOR. E. 25HP. - BALANCE WEIGHTS. (1) The car brought to WW. on the 18th. had 12 units of balance weight = crank and big end, which certainly increased smoothness, but I… | ||
| scan0078 | Scheme for attaching intermediate half weights to an existing 20/25 crankshaft on the Chrysler principle. | ||
| View original record | HS/RM. FROM E. X5010 E1/M20. 8.31. C. to SG. WOR. BY. 20/25. BALANCE WEIGHTS. We send you herewith as promised a scheme for attaching some intermediate half weights to an existing crankshaft on the… | ||
| scan0079 | Suggestion to produce future car crankshafts, particularly for the 25 HP model, from hardened material based on successful testing. | ||
| View original record | To BY. From Hs. c. to Wor. Y5010. Hs.7/MJ.21.8.31. CAR CRANKSHAFTS. X.5010. X.7010. R. is expecting that any future car crankshafts will be produced in hardened material, therefore we suggest that the… | ||
| scan0080 | Crankshaft balance weights, test results, and production decisions for various engine models. | ||
| View original record | 75010. To R. From Hs. c. to Sg. Wor. c. to By. Hs.4/MJ.21.8.31. X.7010. X.5010. BALANCE WEIGHTS. R.4/M17.8.31. We had received instructions from W.W. to try a completely balanced crankshaft including… | ||
| scan0081 | Scheme for fitting Chrysler type balance weights to a crankshaft, including a diagram of the webs. | ||
| View original record | 85010. RHC. from Hs/Gry. Hs/Gry1/AD22.8.31. Herewith W.W. scheme for fitting Chrysler type balance weights. Will you please, therefore, machine the crankshaft in IV-G6 to this scheme i.e. webs 1, 6, 7… | ||
| scan0082 | Scheme for 20/25HP balance weights and a stiffer crank, based on the Chrysler principle. | ||
| View original record | BY. FROM E. C. to SG. C. to WOR. C. to HS. X5010 E1/M22.8.31. 20/25HP. BALANCE WEIGHTS AND STIFFER CRANK. We send herewith LeC.2937 shewing a scheme for the above. The weights are arranged on the… | ||
| scan0083 | 1/2 balance weights for fitting to an IV-G6 crankshaft. | ||
| View original record | Y5010 RHC. from Hs/Gry. Hs/Gry 2/AD22.8.31. 25 HP. BALANCE WEIGHTS. Herewith details of the 1/2 weights for fitting to IV-G6 crankshaft. The crankshaft should be machined more than shown in the… | ||
| scan0084 | Analysis of three failures concerning the low inertia damper spring plate. | ||
| View original record | To E. from Hs/Lid. c. Py. c. Wor. Mx. X5010 Hs/Lid/AD24.8.31. x.634. X.5010. LOW INERTIA DAMPER - SPRING PLATE FAILURES. Hy6/G11.8.31. The total number of failures to date appears to be three. (1) On… | ||
| scan0085 | The production of crankshafts in nitrogen hardening steel for the 20/25 HP engine. | ||
| View original record | ROY. c. Wor. c. Hs. c. BY/CS. 85010 CRANKSHAFTS WITH PROVISION FOR BALANCE WEIGHTS FOR 20/25 HP. ENGINE. Will you please note that the three crankshafts we have ordered, on which provision is being… | ||
| scan0086 | Confirming instructions to hold up production of 25 HP crankshaft dies due to a design alteration. | ||
| View original record | ROY. c. Wer. c. Hs. 85010. RECEIVED 26 JUL 1931 H BY.2/G. 26.8.31. We wish to confirm our written instructions of this afternoon that it is necessary to hold up the 25 HP. crankshaft dies if this is… | ||
| scan0087 | Tests on flywheel vibration and the effect of different balance weight configurations on a 25 HP engine. | ||
| View original record | 85010 To R. from Hs/Cry. c. Sg. c. Wor. E. c. Da. RV. 25 HP. BALANCE WEIGHTS. We have carried out tests to find out the effect on the flywheel vibration at 3100 R.P.M. or 42 M.P.H. in 3rd. gear of the… | ||
| scan0088 | Blueprint diagram showing three numbered line graphs or schematics. | ||
| View original record | 1. 2. 3. 8° | ||
| scan0089 | Design and application of balance weights for the 20/25 HP crankshaft. | ||
| View original record | BY. FROM E. X5010 E1/M27.8.31. C. to SG. WOR. HS. 20/25 HP. BALANCE WEIGHTS. Further to our memo. E1/M22831., we send herewith as promised LeC.2940. showing the result of our assessment of the balance… | ||
| scan0090 | On harmonic balancer designs, comparing American cars and considering options for a 25 HP engine. | ||
| View original record | 85010 To R. From Hs/Gry. c. to Sg. Wor. c. to E. Da. c. to By. Hs/Gry.7/MJ.27.8.31. X.634. X.5010 HARMONIC BALANCER (DAMPER). We do not know of any American car with its timing gears other than at the… | ||
| scan0091 | Balance weight schemes for the 25HP engine, covering production, experimental, and new shaft designs. | ||
| View original record | HS. ) FROM R. BY. ) C. to SG. WOR. X5010 RL/M28.8.31. 25HP. - BALANCE WEIGHTS. (1) PRODUCTION. Existing shafts which were not prepared for balance weights can only have the 8/6 scheme this being the… | ||
| scan0092 | Sending a print of drawing LeC. 2938, concerning the J.3. crankcase, cylinder block, and crankshaft. | ||
| View original record | BY. FROM E. XJ610 E1/M29.8.31. C. to SG. WOR. HS. J. 3. CRANKCASE, CYLINDER BLOCK, CRANKSHAFT, ETC. X.5770 X.5000 X.5050 X.5010 We send you herewith a print of LeC. 2938., dealing with the above.… | ||
| scan0093 | Instruction to manufacture a crankshaft for a new unit, 18-G4. | ||
| View original record | Y5010. To By/SS. From Hs/Gry. Hs/Gry.2/MJ.29.8.31. NEW UNIT FOR 18-G4. Will you please issue instructions to RHC. to make a crankshaft to LeC.2955 for 18-G4 as soon as possible, even if it… | ||
| scan0094 | On a general scheme for crankcase, cylinder block and crankshaft, noting updates to rear main bearings and timing gear lubrication. | ||
| View original record | X5010 BY. FROM E. E1/M5.9.31. X.5000 X.5080 X.5010. C. to SG. WOR. HS. J.3. GENERAL SCHEME OF CRANKCASE, CYL. BLOCK, CRANKSHAFT ETC. We send you herewith Lec. 2938. dealing with the above. The two… | ||
| scan0095 | Request to issue a detail drawing for a 20/25 HP Crankshaft with a list of required modifications. | ||
| View original record | E. Dept. Y5010 PHO H.S. BY/SS10/J.S.9.31. 20/25 H.P. Crankshaft. To confirm the verbal request of the Experimental Dept. will you please issue a Crankshaft detail drawing in accordance with the… | ||
| scan0096 | Modifications to a 20/25 crankshaft using existing forgings. | ||
| View original record | BY. FROM E. C. to SG. WOR. HS. X5010 E1/M9.9.31. 20/25 MODIFIED CRANKSHAFT USING EXISTING FORGINGS. We send you herewith LeC. 2948. shewing the above. You will notice we are asking for 2.25 dia.… | ||
| scan0097 | Proposal from Mr. Elliott for a balanced crankshaft for the 20/25 model. | ||
| View original record | BY/CS. c. Hs. c. BY/SS. X5010 BY.1/G.10.9.31. BALANCED CRANKSHAFT FOR 20/25. On the telephone yesterday afternoon Mr. Elliott gave me the following information. He is sending on to us a scheme showing… | ||
| scan0098 | Alterations to crankshafts for the future 'China' series. | ||
| View original record | X5010 BY. FROM E. E2/M14.9.31. C. to SG. WOR. HS. "CHINA" CRANKSHAFT FOR FUTURE SERIES. Since we have put up with the wisth of the web asked for on Lec. 2948. for crankshafts from existing forgings… | ||
| scan0099 | Modifications to the 'China' modified crankshaft, including increasing web width and adjusting oilway drilling. | ||
| View original record | X5010 BY. FROM E. E1/M16.9.31. C. to SG. WOR. HS. 'CHINA' MODIFIED CRANKSHAFT. We send herewith LeC.2952. shewing a modification to LeC. 2937. increasing the width of the crankshaft webs from 3.25 to… | ||
| scan0100 | Providing instructions for machining a 25 HP crankshaft to specific dimensions and drawings. | ||
| View original record | Y5010. To RHC. From Hs/Gry. Hs/Gry.2/MJ.19.9.31. 25 HP. CRANKSHAFT. With reference to the crankshaft which you are making to take either type of slipper drive. Will you please make the journals and… | ||
| scan0101 | Test of Chrysler balance weights on a 25 HP engine to eliminate flywheel vibration. | ||
| View original record | To R. From.Hs/Cry c. Sg. c. Wor.. E. c. Da. FV. YS010 Hs/Cry.1/AD21.9.31. BALANCE WEIGHTS 25 HP. X.634 X.5010. We can now report on a test of Chrysler balance weights to LeC.2935 on a car which,… | ||
| scan0102 | Manufacturing scheme for 20/25 HP crankshafts and holding the sinking of dies for further production. | ||
| View original record | Hs. c. E. c. Wor. X5010. BY.20/G.22.9.31. [STAMP] RECEIVED 23 SEP 1931 20/25 HP. CRANKSHAFT. E. has informed me in our telephone conversation this afternoon that for the cranks which are already made… | ||
| scan0103 | Modification to balance weights for existing forgings to reduce stress. | ||
| View original record | X5010 BY. FROM E. EL/M26.9.31. C. to SG. MOR. HS. 20/25. BALANCE WEIGHTS. EIGHT WT. SCH. FOR EXISTING FORGINGS. We send you herewith LeC.2955. shewing the above. Weights which are not symmetrical with… | ||
| scan0104 | Blueprint for a crankshaft and crankcase, including modifications for a starter motor mounting. | ||
| View original record | BY. FROM E. X5010 C. to SG. WOR. HS. E3/1126.9.31. X.5010. X.5000 J.3. CRANKSHAFT & CRANKCASE. LeC. 2953. We send you herewith a blueprint of the above giving particulars which will enable you to… | ||
| scan0105 | Conclusions on balance weights, flywheel vibrations, and bearings for car engines. | ||
| View original record | COPY. RC. BY. } FROM R. HS. } X5010 R2/M.26.9.31. X634 X7010 X5010 X7000 X5000 C. to SG. WOR. E. re. BALANCE WEIGHT, FLYWHEEL, CRANKCHAMBER DEFLEC- TIONS, & BEARINGS. We have now straightened this… | ||
| scan0106 | Experiments with slipper wheels and damping loads for a 25 HP low inertia spring drive. | ||
| View original record | γ 5070. 30.9.31. 25 HP. LOW INERTIA SPRING DRIVE x634. This type of slipper wheel has been fitted to units C.1, C.9 (transferred to R's car C.3 unit), 14-G6 and C.7 (10,000 miles). The original… | ||
| scan0107 | Confirming the decision to proceed with three experimental crankshafts for the 20/25 HP engine and querying a related design. | ||
| View original record | X5010. C.O. C. Wor. C. E. C. Hs. C. DHC. RECEIVED 1931 OCT 8 H BY.12/G.1.10.31. Now that R. has decided in favour of the 8 weight, 6 unit balance scheme, the three crankshafts for the 20/25 HP. to… | ||
| scan0108 | Changes to crankshaft forgings and balance weights for the 20/25 HP model. | ||
| View original record | RECEIVED 28 OCT 1931 P. c. Hs. X5010 . BY.20/G.1.10.31 Now that we are going ahead with R's scheme for balancing, having abandoned the Chrysler idea, this will enable us to order up some 20/25 HP.… | ||
| scan0109 | Instructions for altering the dimensions of a 20/25 HP crankshaft and related components for testing. | ||
| View original record | E. Dept. (crossed out) c. RHO (crossed out) c. HS/GRY. X5010. BY/SS2/J 2.10.31. [STAMP: RECEIVED OCT] 20/25 HP. CRANKSHAFT. ------------------- As we are anxious to test as soon as possible balanced… | ||
| scan0110 | Sending an original document and updated blueprint information for a crankshaft and crankcase. | ||
| View original record | COPY. X5010 BY. FROM E. C. to SG. WOR. HS. J. 3. CRANKSHAFT AND CRANKCASE E2/M3.10.31. X5010 X5000 We send you herewith the original of LeC. 2953. dealing with the above. Since sending you the blue… | ||
| scan0111 | Tests on a 25 HP engine to reduce roughness and vibration using a thin flange flywheel and Chrysler balance weights. | ||
| View original record | COPY. X5010. To R. From Hs/Gry. c. to Sg. Wor. c. to E. Da. c. to By. 25 HP. ENGINE ROUGHNESS. Our tests on the thin flange flywheel have shewn that its effect is to reduce the speed of the vibration… | ||
| scan0112 | Telephone conversation about a petrol pump, crankshaft balance weight, and another project. | ||
| View original record | Hs. c. BY/Cgh. c. BY/SS. c. BY/CS. c. E. X5010 BY.17/G.5.10.31. X.7460 X.5010 X.5460. TELEPHONE CONVERSATION WITH WW. OCTOBER 5TH. ------------------------------------------ Speaking on the telephone… | ||
| scan0113 | Request to manufacture a set of Chrysler balance weights according to attached sketches for testing on vehicle 1V-G6. | ||
| View original record | X5010. To RHC. From Hs/Gry. Hs/Gry.5/MJ.6.10.31. CHRYSLER BALANCE WEIGHTS. Will you please make a set of balance weights to the accompanying sketches. If they are made to the thickness shewn, they… | ||
| scan0114 | Cancelling an instruction for 20/25 HP crankshafts due to doubt over a new 8-weight balance scheme. | ||
| View original record | Y5010. ROY. c. Wor. c. Hs. c. BY/CS. BY.11/G.6.10.31. 20/25 HP. BALANCE WEIGHTS. There still appears to be a doubt in E's mind as to R. adopting his 8 weight scheme for a new type of crank produced in… | ||
| scan0115 | Notification of a material change for 20/25-HP chassis crankshaft forgings from Nickel Chrome Steel to V.C.M. Steel. | ||
| View original record | X5010. BY. c. to Hs. c. to RHC. ROY/MS2/P.7.10.31. 20/25-HP CHASSIS CRANKSHAFTS. With reference to the three Crankshaft Forgings E.56885, which have been xx ordered from English Steel Corp'n, from… | ||
| scan0116 | Request for a drawing of a 20/25 HP chassis crankshaft with specific dimensions for an urgent test. | ||
| View original record | E. Dept. 85010 c. RHC c. Hs/GRY. BY/SS10/J.7.10.31. 20/25 H.P.Chassis Crankshafts. ------------------------------ In order to keep record of the crankshaft which is being completed in the Experimental… | ||
| scan0117 | Approved modifications to the 20/25 model crankshaft balance weights. | ||
| View original record | COPY. X5010 BY. FROM E. E2/M8.10.31. X5010 C. to SG. WOR. HS. 20/25. CRANKSHAFT BALANCE WEIGHTS. Referring to BY18/G51031, we attach LeC.2963. herewith shewing modifications to Sch. 1546. which we… | ||
| scan0118 | Proposed modification to the 20/25 HP crankshaft balance weights. | ||
| View original record | Y 5010. To Ev. from Hs/Rm. Hs/Rm.6/ADL.2.10.31. 20/25 HP. CRANKSHAFT BALANCE WEIGHTS. With reference to Lec.2963, it seems to us highly undesirable that the studs should be able to unscrew even to the… | ||
| scan0119 | Flywheel vibration and the adjustment of balance weights for a 25 HP engine. | ||
| View original record | X5010. To R. From Hs/Gry. c. to SS. Wor. c. to E. Da. c. to Hy. Hs/Gry.5/KT.19.10.31. X.5300. X.634. X.5010. 25 HP. FLYWHEEL VIBRATION & BALANCE WEIGHTS. Continuing our report Hs/Gry.6/AT.5.10.31. in… | ||
| scan0120 | Scheme for balancing a crankshaft using specific balance weights. | ||
| View original record | COPY. X5010. HS. } FROM R. BY. } C. to SG. WOR. R7/M20.10.31. X634 K7010 X5010 BALANCING OF CRANK - 12/8 SCHEME OF BALANCE WEIGHTS. I cannot see any reason why it should not be easy to balance a… | ||
| scan0121 | Request to manufacture two sets of spring damper springs for a 25 HP Spring Drive. | ||
| View original record | 85020. To RHC. from Hs/Gry. Hs/Gry.2/KT.26.10.31. 25 HP. SPRING DRIVE. (E.55105) Will you please make two sets (20) of spring drive damper springs to the accompanying sketch Hs.452. The dampers should… | ||
| scan0122 | Specification sheet for a damping spring, detailing its dimensions and properties. | ||
| View original record | Hs 452 DIA OF WIRE .056 - 17 S.W.G. OUTSIDE DIA OF HELIX .380 NO: OF WORKING COILS 4 WITH ONE COIL GROUND SQUARE EACH END) MAKING A TOTAL OF 6 COILS FREE LENGTH .731 (APPROX) LOAD WHEN COMPRESSED TO… | ||
| scan0123 | Implementation of alternative crankshaft balance weight schemes for the 25 HP engine. | ||
| View original record | To.R. From Hs. c. to Sg. Wor. c. to E. Da. c. to Sy. Hs.3/MJ.27.10.31. 25 HP. BALANCE WEIGHTS. X.5010. 18-G4. which is going to France, will have the 6/8 unit scheme, which will balance . of the… | ||
| scan0124 | Request to urgently order three modified crankshafts for a 20/25 HP chassis. | ||
| View original record | RECEIVED 1931 OCT 28 HC ROY. c. Hs. Y5010. BY/11/G. 27.10.31. 20/25 HP. CHASSIS. Will you kindly order up three crankshafts from the dies which have recently been modified by the addition of facings… | ||
| scan0125 | Machining of a 20-GIV crankshaft, slipper wheel, and balance weights. | ||
| View original record | H. Smith from Hs/Rm. XS010 Hs/Rm.6/AD29.10.31. 20-GIV CRANKSHAFT. It will now be in order to go ahead with machining the next crankshaft for the low inertia slipper wheel and also prepare a wheelcase… | ||
| scan0126 | Balancing of crankshaft weights and associated machining processes. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. Y5010 R1/M2.11.31. X5010 CRANKSHAFT BALANCE WEIGHTS. I cannot understand why you fear getting the Chrysler scheme incorrect in balance, because if the eight smaller… | ||
| scan0127 | Request to manufacture sets of springs for a 25 HP low inertia spring drive. | ||
| View original record | X5020. To RHC. from Hs/Gry. Hs/Gry.3/KT.5.11.31. 25 HP. LOW INERTIA SPRING DRIVE. Will you please make sets of springs to the accompanying drawings Hs.461 and E.56200 (modified), in order to raise the… | ||
| scan0128 | Specification card for a driving spring detailing wire diameter, coil count, helix diameter and length. | ||
| View original record | Hs 461 DIA OF WIRE .092 4 WORKING COILS AND AN EXTRA COIL GROUND SQUARE EACH END) MAKING A TOTAL OF 6 COILS OUTSIDE DIA OF HELIX .632 - 10 FREE LENGTH .800 8 OFF DRIVING SPRING LcC 2547 | ||
| scan0129 | Test report on the relative merits of standard and low inertia spring drives and balance weights for the 25 HP engine. | ||
| View original record | R. from Hs/Gry. c. to BG. Wor. c. to E. Da. c. to Hy. X.5010. Hs/Gry.5/KT. 7.11.31. X.634. X.5010. BALANCE WEIGHTS 25 HP. We have carried out tests on the relative merits of the standard and low… | ||
| scan0130 | Blueprint for applying Chrysler Type Balance Weights to a 20/25 HP Chassis crankshaft. | ||
| View original record | X5010 To HS. BY/CS1/EH.24.11.31. Re 20/25 HP. Chassis - Crankshaft - Section 5010. Chrysler Type Balance Weights. Please receive herewith blueprint of Scheme 1557, showing how the above type balance… | ||
| scan0131 | Design for a modified 20/25 HP crankshaft created from existing forgings. | ||
| View original record | SCHEME 1557 20/25 HP MODIFIED CRANKSHAFT FROM EXISTING FORGINGS USING FORGING E56885 SCALE 1/1 DRAWING OFFICE TRACED 21 NOV 31 | ||
| scan0132 | Tests to eliminate timing gear rattles on the 25 HP engine following the introduction of a new camshaft. | ||
| View original record | X5020. To R. From Hs/Gry. c. to SS. Wor. c. to E. Da. c. to SY. Re/Gry.1/Br;30.11.31. X634. TIMING GEAR RATTLES. With the new high lift camshaft on the 25 HP. and the stronger valve springs to bounce… | ||
| scan0133 | Experiments measuring the effect of balance weights on 25 HP engine flywheel vibration. | ||
| View original record | X5010 To R. From Em/Gry. c. to SG. Wor. c. to RG. E. c. to Hy. Fa. Hs/Gry.4/MJ.1.12.31. 25 HP. FLYWHEEL VIBRATION. x634 As suggested by R. we have carried out experiments on a balanced crankshaft with… | ||
| scan0134 | Blueprint of a mechanical component with dimensions and force loads. | ||
| View original record | 1/2 lb 2" 4" 1/2 lb OAD | ||
| scan0135 | Photographic study of crankshaft vibration patterns under various balance conditions. | ||
| View original record | Top Row: Image 1: 2400, No Balance Weights Image 2: 2400, 95% Balance Middle Row: Image 1: 3300, 95% Balance 41 fms at Periphery Image 2: 2400, No Weights 41 fms at Periphery Image 3: 2400, 95%… | ||
| scan0136 | The production of three crankshafts for the 20/25 HP chassis and a discussion on journals for the 'U' series. | ||
| View original record | RHC. c. Hs. c. BY/GS. X5010 BY.8/G.4.12.31. 20/25 HP. CHASSIS - CRANKSHAFT. RHC.4/BE.1.12.31. RECEIVED 5 DEC 1931 The three crankshafts to piece No. E.56885 in V.C.M. steel which we instructed to be… | ||
| scan0137 | Decision to use Nitro Alloy for all future experimental crankshafts following successful 10,000-mile tests. | ||
| View original record | By. from Hs/Rm. c. RHC. X 5010. Hs/Rm.1/AD7.12.31. X5010 CRANKSHAFTS. Since it has been agreed that Nitro Alloy crankshafts should be used on production, and we have had such excellent results on… | ||
| scan0138 | Request to issue details for a modified 25 HP crankshaft with 2.250 journals. | ||
| View original record | By. From Hs/Gry. X5010 Hs/Gry.4/MA.10.12.31. 25 HP CRANKSHAFT. Will you please issue details to RHC. for a crankshaft to Sch.1557, but with 2.250 journals and also the necessary modifications to the… | ||
| scan0139 | Standardisation and dimensions of balance weights for a 20/25 HP chassis balanced crankshaft. | ||
| View original record | X5010. To Hs. C-in-Hr/Gry BY/CS2/EH.17.12.31. Re 20/25 HP. Chassis - Balanced Crankshaft - Section 5010. With reference to the above Crankshaft which is under consideration for standardisation, and… | ||
| scan0140 | Scheme for fitting a 2.250 journal crankshaft to the J.1 high compression Japan unit. | ||
| View original record | X 5010 To RHC. from Hs/Gry. Hs/Gry.5/KT.18.12.31. CRANKSHAFT FOR J.1. Herewith scheme for fitting a 2.250 journal crankshaft to the high compression Japan unit. Will you please put this through as… | ||
| scan0141 | Clarifying the machining instructions for new crankshaft forgings. | ||
| View original record | Y5010. To By. from Hs/Gry. Hs/Gry.10/KT.18.12.31. NEW CRANKSHAFT FORGINGS. Referring to By.8/G.4.12.31. it would appear that these forgings are to be machined to E.56885 (i.e. with flats) but we… | ||
| scan0142 | Production dimensions of a small balance weight for a 25 HP crankshaft. | ||
| View original record | ✓5010. To By/CS. from Hs/Gry. Hs/Gry.9/KT.18.12.31. 25 HP. CRANKSHAFT. Replying to By/CS2/EH17.12.31. with regard to the dimensions of the small balance weight for production, we think the dimension… | ||
| scan0143 | Giving instructions on the machining of new 25 HP crankshaft forgings. | ||
| View original record | X5010. To By. from Hs/Gry. Hs/Gry.1/KT.21.12.31. NEW 25 HP. CRANKSHAFT FORGING. Referring to your By8/G.4.12.31. in which you issue instructions thatt these forgings are to be machined to E.56885. We… | ||
| scan0144 | Standardisation sheet for the Low Inertia Spring Drive, detailing the required springs and loads. | ||
| View original record | To By. from Hs/GWH. x5010. Hs/GWH.5/KT.5. 1. 32. LOW INERTIA SPRING DRIVE. x5020. We are issuing a standardisation sheet for the Low Inertia Spring Drive incorporated with the balanced crankshaft. The… | ||
| scan0145 | Standardisation sheet for the Low Inertia Spring Drive incorporated with the balanced crankshaft. | ||
| View original record | X5020. To By. from Hs/GWH. Hs/GWH.5/KT.5.1.32. LOW INERTIA SPRING DRIVE. X5010 We are issuing a standardisation sheet for the Low Inertia Spring Drive incorporated with the balanced crankshaft. The… | ||
| scan0146 | Request for the weights of various crankshafts (25 HP, 40/50 HP, 18-GTV) and their balance weights. | ||
| View original record | RHC. from HS/Rn. Copy. X5010 Hs/Rn.5/AD.11.1.32. X5010 X7010 Will you please let us have the weights of the larger journal 25 HP. and 40/50 HP. crankshafts in their blanced condition compared with the… | ||
| scan0147 | Analysis of torsional vibration issues in the J.3 crankshaft and damper system. | ||
| View original record | SECRET. X5010. To R. From Ha/Gry. Ha/Gry.6/WJ.1.3.32. X634 c. to Sg. c. to Wor. c. to E. c. to Da. J.3 CRANKSHAFT & DAMPER (Lec.2977). c. to By. The half torsional period of this engine has been most… | ||
| scan0148 | Requesting a test on the J.3 crankshaft's inertia during gear noise experiments. | ||
| View original record | RHC. From Hs/Gry. 85010 Hs/Gry.4/MA.2. 3. 3. 32. J. 3. CRANKSHAFT. While this engine is being used for gear noise experiments we think it a good opportunity to test the crankshaft inertia. Will you… | ||
| scan0149 | Issues with incorrect spring gauge and driving load on a 25HP low inertia spring drive. | ||
| View original record | 85070. By. From Hs/Gry. c. to MX. Hs/Gry.1/MA.22. 3. 32. 25HP. LOW INERTIA SPRING DRIVE. We understand that Mr. Ellis is having trouble in getting the required driving load on this type of spring… | ||
| scan0150 | Urgent request for an experiment on a 25 HP spring drive to resolve issues with gear rattles. | ||
| View original record | X5020. RHC. From Hs/Gry. Hs/Gry.7/MA.13.4.32. 25 HP. SPRING DRIVE. Will you please fit up a spring drive with increased inertia as shown in the accompanying sketch. The timing case will have to be cut… | ||
| scan0151 | Arrangement of additional inertia to 25 HP spring drive. | ||
| View original record | Hs 579 MODIFICATION TO F54538 .450 .050 Rd 8.140 DIA -1 MATERIAL S/M 9.150 DIA 8.144 DIA +1 6.840 DIA 6.940 DIA 8.144 DIA .050 Rd 1.000 .150 ARRANGEMENT OF ADDITIONAL INERTIA TO 25 HP SPRING DRIVE Le… | ||
| scan0152 | Standardisation of a balanced crankshaft, nose piece, low inertia slipper wheel and thin web flywheel. | ||
| View original record | RR 755 (10H) (19120. 13-10-31) BM. 3/7588. COMPLETED 26.4.32. X5010. STANDARDISATION of CHASSIS PARTS. Description of Parts. BALANCED CRANKSHAFT. NOSE PIECE TO SUIT LOW INERTIA SLIPPER WHEEL AND REAR… | ||
| scan0153 | Authorization form for fitting a new part to a chassis, detailing the chassis number and associated costs. | ||
| View original record | AUTHORISATION for CHASSIS PARTS The number of the first chassis on which the new part will be fitted........... 131 in 'T' Date when chassis will be handed to test. Production Cost of scrapped… | ||
| scan0154 | Standardisation of a low inertia spring drive incorporated with a balanced crankshaft. | ||
| View original record | RR 755 (10H) (19120, 13-10-31) BM. S/7588. X5010 COMPLETED 26.4.32. STANDARDISATION of CHASSIS PARTS. Date 4.1.32. Description of Parts. Low Inertia spring drive. incorporated with balanced… | ||
| scan0155 | Standardisation form for a new chassis part. | ||
| View original record | STANDARDISATION of CHASSIS PARTS REF NO. X.1030 DATE 28.9.38 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...… | ||
| scan0156 | Standardisation of a Low Inertia spring drive incorporated with a balanced crankshaft. | ||
| View original record | RR 75B (10H) (19120, 13-10-31) BM. 3/7588. X50/20 COMPLETED 26.4.32. STANDARDISATION of CHASSIS PARTS. Date 4. 1. 32 Description of Parts. Low Inertia spring drive incorporated with balanced… | ||
| scan0157 | Standardisation sheet detailing the introduction of a new part to a 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. Production Cost of scrapped… | ||
| scan0158 | Standardisation sheet for a wheel case designed to suit a low inertia spring drive. | ||
| View original record | RR 755 (10H) (19120, 13-10-31) BM. 3/7588. XS 020. COMPLETED 26.4.32. STANDARDISATION of CHASSIS PARTS. Date 4. 1. 32 Description of Parts. Wheel case to suit low Inertia spring drive. X No. X5170… | ||
| scan0159 | Standardisation sheet detailing the fitting of a new part to a chassis and associated costs. | ||
| 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. Production Cost of scrapped material, if… | ||
| scan0160 | Confirming modifications to Low Inertia Crankshaft Dampers for the 20/25 and Phantom II models. | ||
| View original record | X5010 x634 x7010 BY. from E. c. Wor. MX. Hs. ----------- E.1/HP.21.4.32. ----------- re Low Inertia Crankshaft Dampers. -------------------------------- This is to confirm conference this morning with… | ||
| scan0161 | Standardisation of a 25 HP. Nitro Alloy Crankshaft. | ||
| View original record | RR 755 (10M) (18120, 13-10-31) BM. 3/7558. 45010 COMPLETED 30.8.32 STANDARDISATION of CHASSIS PARTS. Date 9.6.32. Description of Parts. 25 HP. NITRO ALLOY CRANKSHAFT. X No. 5010 Drawing No. Part List… | ||
| scan0162 | Standardisation report for a new chassis part, noting costs and implementation details. | ||
| View original record | STANDARDISATION of CHASSIS PARTS (Mirrored text) The number of the first chassis on which the new part will be fitted..... Not decided. Date when chassis will be handed to test............... --- Cost… | ||
| scan0163 | Eliminating engine gear rattle on P.2 & 25 HP models using a modified dynamo drive. | ||
| View original record | X5020. E. From Hs. Hs.1/MJ.12.9.32. X5020 c. to Mr. By. c. to EP. Mx. c. to Hd. ENGINE GEAR RATTLES P.2 & 25 HP. On experimental cars we have found that we can entirely eliminate the engine gear… | ||
| scan0164 | Eliminating engine gear rattles by fitting a special flexible drive, crediting Mr. McStay for the scheme. | ||
| View original record | X5020 E. c. Hs. c. Mx. ----- BY.8/G.13.9.32. X7020 Referring to Hs.1/MJ.12.9.32. we note that you can entirely eliminate engine gear rattles by fitting a special form of flexible drive. This was the… | ||
| scan0165 | Standardisation sheet concerning a crankshaft with 2.250 journals for a 20/25 HP chassis. | ||
| View original record | E. Dept. (crossed out) 85010 c. Hs/Rm. BY/SS12/N.31.10.32. 20/25 HP. Chassis. Re: Crankshaft 2.250 Journals - Standardisation Sheet. This crankshaft with the necessary modified details was produced in… | ||
| scan0166 | To hold all work on the 20/25 HP Chassis crankshaft pending a new design drawing. | ||
| View original record | BY/CS. c. Hs/Rm. c. E. X5010, BY/SS15/N.8.11.32. Re: 20/25 HP. Chassis - Crankshaft with 2.250 Journals. With reference to the Standardisation Sheet and the EX. drawings handed to you under cover of… | ||
| scan0167 | Increase in crankshaft diameter for the 20/25 type engine and specifying V.C.M. steel for all new crankshafts. | ||
| View original record | E. Dept. c. Hs. c. C.O. c. E. X5010. BY.1/G.9.11.32. RECEIVED 9 NOV 1932 J.1. ENGINE - CRANKSHAFT. -------------------------- The increase in diameter of the 20/25 type of crankshaft from 2⅛ to 2¼ has… | ||
| scan0168 | Design issues with the J.I. crankshaft, specifically the journal diameter and slipper wheel. | ||
| View original record | To E. from Hs/Rm. 85010. Hs/Rm.4/AD29.11.32. X45-5-5. J.I. CRANKSHAFT As we have increased the diameter of the journals on the crankshafts the noses remain of the same size. The result is a very… | ||
| scan0169 | Need to use studs instead of bolts for main bearings on the Bensport engine due to a larger crankshaft. | ||
| View original record | 85010. To BY. from E. c. to Hs. E.4/HP.21.12.32. 54553 re Bensport engine and larger crankshaft for 20/25. --------------------------------- We find it necessary to use studs instead of bolts for… | ||
| scan0170 | The dynamic balancing of 25 HP crankshafts using a Trebel balancing machine. | ||
| View original record | DY. from Hs/Rm. C. to Sft. Hs/Rm.16/KT.30.1.33. DYNAMIC BALACING OF 25 HP. CRANKSHAFTS. Y1482 This work was done on the recently purchased Trebel balancing machine. This machine has two pointers… | ||
| scan0171 | Out-of-balance measurements for several shafts, with a note on a specific correction. | ||
| View original record | SHAFT. OUT OF BALANCE AT FLYWHEEL END (OZS.INS). OUT OF BALANCE AT FRONT END (OZ.INS). J-4-B. 0.5 1.1 K-4-C 1.0 1.0 K-5-C 1.9 1.1 K-6-C 1.8 0.2 K-7-C 2.2 0.8 Note. The first shaft, J-4-B, was one… | ||
| scan0172 | Proposed modification to increase lubrication holes in chassis crankshafts. | ||
| View original record | X5010 COPY. Hs. c. RHC. BY.1/G.9.2.33. X 4027 X 4553 x 5010 LUBRICATION OF CHASSIS CRANKSHAFTS. I would suggest that before we put a modification through to increase the number of holes in the… | ||
| scan0173 | Modifications to the 25-HP and Bensport Crankshaft Slipper Drive. | ||
| View original record | Rm x5020. To BT. from E/JNR. E/JNR.1/HP.4.5.33. c. Wor. Hs. Sft. Mx. RHO. re 25-HP and Bensport Crankshaft Slipper Drive. Referring to the trouble of damage resulting to the slipper drives during… | ||
| scan0174 | Theoretical calculations and road test results for a J.3. crankshaft. | ||
| View original record | X5010 To E. from Hs/Gry. Hs/Gry.4/KT.9.5.33. J.3. CRANKSHAFT. As requested we have calculated the theoretical gain in critical speed when using the 2.750 journal crankshaft to Lec.3193 instead of… | ||
| scan0175 | Internal order request for 12 Ferobestos friction discs for the 20/25 Spring Drive. | ||
| View original record | Order Office. X 2020. Hs/Gry.12/KT.10.5.33. 20/25 SPRING DRIVE. Will you please order from Ferodo Ltd, 12 friction discs in Ferobestos, 5.700" outside diameter, 4.00P" inside diameter, by .062" thick.… | ||
| scan0176 | Issues with the Bentley J.III crankshaft and the number of main bearings. | ||
| View original record | X5670 To Wor. From Hs/RM. a. c. Hy. b. Ev. d. Bh. Da. Hs/RM.4/KT.31.7.33. J.III CRANKSHAFT. Our troubles with the Bentley now seem to be concentrated on the crankshaft. The symptoms are loose… | ||
| scan0177 | Pros and cons of different crankshaft bearing arrangements and related material choices. | ||
| View original record | To WCR. from E. c. Hs. By. Bn. J.3. Crankshaft. Memo Hs/Rm.4/KT.31.7.33 raises an issue which we have had under review for some time, e.g. the question of departing from what has always been… | ||
| scan0178 | Piston construction and gudgeon pin development for six-cylinder engines. | ||
| View original record | - 2 - E.5/HP.2.8.33. ------------- We are also trying alternative schemes of piston construction. This gudgeon pin development is required for the Spectre and all six cylinder engines where the… | ||
| scan0179 | Balance weights should be forged solid with the crankshaft. | ||
| View original record | To E. From Hs. c. to Wcr. c. to By. c. to Sft. X 5010 Hs.11/MJ.31.8.35. X 5010 X 217 BALANCE WEIGHTS. We suggest that in future production we might find it economical and certainly cause less anxiety,… | ||
| scan0180 | Parts summary for modifying the 20/25 HP chassis crankcase and crankshaft. | ||
| View original record | To C/RB (strikethrough) c. AEM (strikethrough) c. Rawhide (strikethrough) c. BY/Min (strikethrough) c. HS X5010. BY/CS7/EH.31.8.33. Re 20/25 HP. CHASSIS - SUMMARY OF PARTS REQUIRED FOR FITTING STUDS… | ||
| scan0181 | Feasibility and risks of making balance weights solid with the crankshaft, referencing balance weight failure on a Bentley engine. | ||
| View original record | COPY. To Hs. from E. c. Wor. By. Sft. E.4/HP.1.9.33. [Handwritten: X150 X217] Balance Weights. Referring to your memo Hs.11/MJ.31.8.33. I am generally in agreement with your suggestion to make balance… | ||
| scan0182 | Standardisation of a stiffer crankshaft for the 3 1/2 Litre Bentley. | ||
| View original record | RR 755 (10H) (37133. 28-10-32) BM. 3/9064/1. COMPLETED 13.10.33. STANDARDISATION of CHASSIS PARTS. Date 20.6.33. No. X 5010. Description of Parts. STIFFER CRANKSHAFT AS USED ON 3 1/2 LITRE BENTLEY.… | ||
| scan0183 | Standardisation of Chassis Parts form. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted................. B.2. Date when chassis will be handed to test. .... 30.12.33. Cost of jigs and… | ||
| scan0184 | The standardization and balance of crankshafts for the 20/25 model 10,000 miles test. | ||
| View original record | To E. from Hs/Gry. X 5010 Hs/Gry.7/KW5.1.34. Crankshaft for 20/25 10,000 miles Test. ------------------------------------- We recently standardised the Bentley crankshaft for the 20/25, and this… | ||
| scan0185 | Agreeing to test heavier balance weights on a 25-HP crankshaft and providing the relevant drawing. | ||
| View original record | |||
| scan0186 | Instructions for an experimental Goshawk crankshaft with increased balance weights from existing forgings. | ||
| View original record | X5010 To. RHO. c. Hs. c. BY/EL. GRY See me about this job HS BY/CS14/EH.26.1.34. Re Goshawk - Crankshaft - Section 4010. Crankshaft with increased Balance Weights from existing Crankshaft Forgings.… | ||
| scan0187 | Experiment to add bolted-on balance weights to a Goshawk crankshaft. | ||
| View original record | To RHC c. Hs/Gry. c. BY/EDT. X5010 GRX BY/CS6/EH.30.1.34. Re Goshawk - Crankshaft - Section 4010. Additional (Bolted-on) Balance Weights R.R.Sch.606. Further to our memo BY/CS8/EH.29.1.34, please… | ||
| scan0188 | Fitting of overhanging balance weights to the 20/25 model. | ||
| View original record | X5010 By: Hs/Gry.9/KW.30.5.34. Overhanging Balance Weights - 20/25, LeC.3758. We have run a set of these 10,000 miles on GLN-60, held on by one stud only. Those to the LeC. are running on 21-G.IV.… | ||
| scan0189 | The introduction of overhanging crankshaft balance weights for the 20/25 HP chassis. | ||
| View original record | Hs. X5010 BY/Cgh.16/G.5.6.34. 20/25 HP. CHASSIS - CRANKSHAFT BALANCE WEIGHTS. As requested by Rm. we are arranging to introduce on production the overhanging balance weights as shown on LeC. 3758 in… | ||
| scan0190 | Standardisation of parts for an increased balance weight on a crankshaft. | ||
| View original record | RR 788A (SH) (25574, 18-10-33) BM. 3/262/6. COMPLETED 21.8.34. 20/25 STANDARDISATION of PARTS. Date 6.6.34. Description of Parts. INCREASED BALANCE WEIGHT ON CRANKSHAFT. X No. 5010. Drawing LeC. No.… | ||
| scan0191 | Cost estimate and production feasibility note for extra jigs, tools, and equipment for the 'F' series chassis. | ||
| View original record | Est. cost of extra jigs, tools and equipment (Sft/Ws.22.6.34) £28.0.0. Could be brought on to production at 1st chassis in 'F' series (Sft/GH.22.6.34) without scrap. [Stamp 1, Red]: RECEIVED 6 JUN '34… | ||
| scan0192 | Letter to a supplier about an unsatisfactory oil retaining felt on 20/25 engines, asking for suggestions. | ||
| View original record | X5010 Exptl. Dept. Hs/Cry.2/KW. 28th September, 1934. The Super Oil Seal Manufacturing Co., River Lee Road, Greet, Birmingham. Dear Sirs, We send you herewith a drawing of the oil retaining felt… | ||
| scan0193 | Letter from Super Oil Seal Manfg. Co. regarding a proposal for a split seal for 20/25 engines. | ||
| View original record | SUPER OIL SEAL MANfg. CO. (ENGLAND) LTD. Director: H. E. CRESSMAN (AMERICAN). Technical Director: G. H. AYRES. MANUFACTURERS FOR EUROPE OF THE "PERFECT" OIL SEAL (PATENTED) TELEPHONE: ACOCKS GREEN… | ||
| scan0194 | Concerns about excessive crankshaft wear on Bentley and 20/25 models. | ||
| View original record | X5010 To H.L. c. to E. c. to R.H.C. Ha/Rn.12/KW.10.10.34. Bentley and 20/25 Crankshaft Wear. We are somewhat concerned with the wear of the crankshafts of the 20/25 and the Bentley. We have a good… | ||
| scan0195 | Standardisation of a felt oil retaining ring at the rear of the crankshaft bearing. | ||
| View original record | RR 755A (SH) (S7394. 30-1-34) BM 3/787/1. COMPLETED 18.10.34. 20/25 STANDARDISATION OF PARTS. Date: 26-9-34 / 13.9.34. X No. 5010. Drawing No. Part List. Description of Parts. FELT OIL RETAINING RING… | ||
| scan0196 | Cost estimate for extra jigs, tools, and equipment for the 'D.2' series production. | ||
| View original record | Est. cost of extra jigs, tools and equipment (Sft/Ws.18.9.34) - £12.0.0. This has been on production since the beginning of "D.2" series. | ||
| scan0197 | Letter from Charles Weston & Co., Ltd. regarding the supply of Gits Patent Precision Oil Seals. | ||
| View original record | APPROVED BY ADMIRALTY, WAR OFFICE, AIR MINISTRY, ETC. CHARLES WESTON & CO., LTD. BRANCHES. A. AIERS & SON, 17, EATON ROAD, COVENTRY. D. S. GIBB, 47, ACKERS STREET, OXFORD ROAD, MANCHESTER. MR. J. B.… | ||
| scan0198 | Letter to Charles Weston & Co. Ltd. regarding a drawing of a felt oil retaining device and the testing of a split seal. | ||
| View original record | X 517 Exptl. Dept. Hs/Gry.20/KW. 9th April, 1935. Messrs. Charles Weston & Co.Ltd., Lincoln Chambers, Portsmouth Street, Kingsway, LONDON, W.C.2. Dear Sirs, We send you herewith a drawing of the felt… | ||
| scan0199 | Letter from Charles Weston & Co. regarding a Gits Patent Precision Oil Seal for a 20/25 engine crankshaft. | ||
| View original record | x51.7 APPROVED BY ADMIRALTY, WAR OFFICE, AIR MINISTRY, ETC. CHARLES WESTON & Co., LTD. BRANCHES. A. AIERS & Son, 17, EATON ROAD, COVENTRY. D. S. GIBB, 47, ACKERS STREET, OXFORD ROAD, MANCHESTER. MR.… | ||
| scan0200 | Letter returning a consignment of oil seals for examination and outlining future requirements. | ||
| View original record | x577 Exptl. Dept. Hs/Les.16/KW. 16th March, 1936. The Super Oil Seal Manufacturing Co.Ltd., River Lee Rd., Greet, Birmingham 11. For the attention of Mr. Aynes. Dear Sirs, We are returning to you the… | ||
| scan0201 | Crankshaft damper issues and required treatments for cotton duck washers on 25/30 HP engines. | ||
| View original record | [Handwritten] This is interesting. CHm [Handwritten] Wem Sud DL To By.. [Strikethrough] from Rm/GWH. c. to Rm. [Strikethrough] c. to Mx. [Strikethrough] c. to LA. ---------------- [Handwritten] 517.… | ||
| scan0202 | Fierce clutches in 20/25 HP and 3.5 Litre Bentley models and a proposed fix using Ferodo sections. | ||
| View original record | Mx. C. Rm. Rm/GWH.21/G.9.8.39. 20/25 HP. and 3 1/2 LITRE BENTLEY - LEAD BRONZE CLUTCH PLATES. We have had cases of fierce clutches after fitting the lead bronze linings, and also after being in use… | ||
| scan0203 | Bentley clutch slip, wear allowances, and pressure loss. | ||
| View original record | To K/KC... from Rm/GWH. Rm/GWH.12/N.10.11.38. Bentley - Clutch. With regard to your query re clutch slip with plates half worn, I have taken the matter up with BY. and the following are the facts. The… | ||
| scan0204 | Performance and wear characteristics of graphite bronze clutch facings. | ||
| View original record | W/K. To PK/KC. from Rm/NRC. c. GWH. Rm/NRC.1/MH.19.2.38. GRAPHITE BRONZE CLUTCH FACINGS. Thanks for PK/KC/DPB/17.2.38. This is evidently a case where the original synchro. sleeve, without damping… | ||
| scan0205 | Potential wear on a clutch bush for the 20/25 HP and Bentley models. | ||
| View original record | W/K. To Rm/GWH. from Rm/NRC. Rm/NRC.9/AP.25.2.38 Re. 20/25.HP. and BENTLEY CLUTCH. We are interested in your Rm/GWH.19/N.21.2.38. Could you kindly give us some idea of the extent of the wear or slack… | ||
| scan0206 | On curing clutch judder in 25/30 HP & Bentley clutches by fitting a new bronze bush bearing. | ||
| View original record | To Hs.. from Rm/GWH. c. to By. c. to Rm. c. to Mx. ---------------- Rm/GWH.1 9/N.21.2.38. -------------------------- 25/30 HP. & Bentley Clutches. -------------------------- Cricklewood have had a… | ||
| scan0207 | Owner's complaint of clutch judder with graphite bronze clutch faces on a 3½-litre Bentley. | ||
| View original record | K/W. Rm/NRC. c to GWH. Pk/KC/DPB/17.2.38. re: GRAPHITE BRONZE CLUTCH FACES. 20/25.HP & 3½-litre BENTLEY. Mileage of liners 3,000. Re Rm/NRC.16/JH.21.10.37 and my Pk/KC/DPB/23.11.37, you will be sorry… | ||
| scan0208 | Synchro rattle and judder issues related to graphite bronze clutch facings. | ||
| View original record | K/W. Rm/NRC. c to GWH. Pk/KC/DPB/25.2.38. GRAPHITE BRONZE CLUTCH FACINGS. ----------------------------- Thank you for Rm/NRC.1/MH.19.2.38. We are aware that there is a slight synchro rattle in this… | ||
| scan0209 | Technical drawing of a clutch for a 20/25 Bentley, highlighting wear on the bronze bush. | ||
| View original record | Cricklewood Feb 17th - 38 20/25 + BENTLEY GB538 +G50218 CLUTCH .006 wear BRONZE BUSH | ||
| scan0210 | Slack in a bronze bush for 20/25 HP and Bentley clutches, and subsequent owner satisfaction after replacement. | ||
| View original record | FILE COPY To By;.... from Rm/GWH. c. to Rm/NRC. ------------------------ Rm/GWH.14/N.3.3.38. ------------------------ Re: 20/25 HP. and Bentley Clutches. ------------------------------------ With… | ||
| scan0211 | Slight clutch judder complaint concerning graphite bronze clutch faces on a 3 1/2-litre Bentley. | ||
| View original record | K/W. Rm/NRC. c to GWH. PK/KC/DPB/17.2.38. re: GRAPHITE BRONZE CLUTCH FACES. 20/25.HP & 3 1/2-litre BENTLEY. Mileage of liners 3,000. Re Rm/NRC.16/JH.21.10.37 and my PK/KC/DPB/23.11.37, you will be… | ||
| scan0212 | Customer complaints and potential driver fault regarding Borg & Beck clutches. | ||
| View original record | K/W. Rm/NRC. c to Rm/GWH. ✓ Pk/KC/DPB/18.2.38. re: BORG & BECK CLUTCHES. -------------------- I thank you for your Rm/NRC.1/MH.16.2.38. We have actually had about four cases where the facing of a Borg… | ||
| scan0213 | Examining clutch friction plates and increasing clearance to extend service life. | ||
| View original record | - 2 - general rule, when examining friction plates of clutches that have been dismantled for judder, rarely find one the head clearance of which is even .03". Anything that you can do to increase this… | ||
| scan0214 | Alterations to address rattles in Bentley clutch and brake pedals. | ||
| View original record | Rm/GWH. from RHC/Cy. to RHC RHC/Cy.5/LS.20.8.37. BENTLEY CLUTCH & BRAKE PEDALS - RATTLES. Referring to the attached Da.1/HP.3.6.37. schemes have been prepared re a common gas seal on all type chassis,… | ||
| scan0215 | Modifying Bentley clutch and brake pedals to address rattling issues by adopting a new joint type. | ||
| View original record | COPY. c.c. Rm. Rm/GWH. RHC. RHC/CY. Da.1/HP.3.6.37. BENTLEY CLUTCH AND BRAKE PEDALS. - RATTLES. Referring to RHC/Cy.9/LS.13.5.37, we can adopt the 25/30-HP type of joint to Bentley, and have shewn the… | ||
| scan0216 | Blueprint of a corrugated or bellows-like component with dimensions. | ||
| View original record | 9/16", FULL 9/16" | ||
| scan0217 | Correction notice for a drawing reference related to Bentley Clutch and Brake Pedal rattles. | ||
| View original record | JUN 30 E. c. Rm. Rm/CWH. RHC. RHC/Cy. Da.1/HP.29.6.37. Bentley Clutch and Brake Pedals – Rattles. With reference to Da.1/HP.3.6.37 the drawing referred to in the first paragraph should read N.Sch.… | ||
| scan0218 | Rattles in Bentley clutch and brake pedals, proposing a modification to standardize parts with other models. | ||
| View original record | B. c-For. Rm/CWH. RHC-RHO/Cy. Da.1/HP.3.6.37. Bentley Clutch and Brake Pedals. - Rattles. Referring to RHC/Cy.9/LS.13.5.37, we can adopt the 25/30 type of joint to Bentley, and have shewn the… | ||
| scan0219 | Querying if the spring for the Bentley pedal anti-rattle device can be made with a larger diameter. | ||
| View original record | To E. c. to Rm. GWH Kingsbury, June 11tn. Bentley Anti Rattle for pedals. The spring holding the steel cup for the anti rattle device of the pedals is too small in dia. and will actually pass through… | ||
| scan0220 | Modification to a gas tight joint for the brake and clutch pedals on a Bentley II. | ||
| View original record | THE EXISTING METHOD OF HOLDING THE FELT WASHER AGAINST THE PEDAL GAP PLATE BY A SPRING ALONG THE PEDAL STEM HAS BEEN FOUND TO BE UNSATISFACTORY & CAUSES RATTLES. THE REASON BEING THAT THE FREE LENGTH… | ||
| scan0221 | Blueprint for a distance piece for a gas-tight joint on a pedal stem. | ||
| View original record | FB 2913 ROLLS-ROYCE, LTD. PRINT ROOM JUN 19 1937 DERBY. NSch 5152 REPLACE ALL COPIES TO EXP. PATT. WORKS. FORGE T.O. S.R. D.O. R. R.D. AMERICA. T.D. COST. DRAWN. A.Stew TRACED. CHECKED. APPROVED.… | ||
| scan0222 | The fitting and performance of graphite bronze clutch faces on two 3 1/2-litre Bentley cars. | ||
| View original record | K/W. Rm/NRC. c to GWH. Pk/KC/DPB/10.11.37. re: GRAPHITE BRONZE CLUTCH FACES. 20/25.HP and 3 1/2-litre BENTLEY. re: Rm/NRC.16/JH.21.10.37. The two sets of Graphite Bronze clutch facings left by you on… | ||
| scan0223 | Complaint and new procedure for setting 25/30.HP & Bentley clutches made by Borg & Beck. | ||
| View original record | To Mr.Haywood. from RHC/Cy. | ||
| scan0224 | Correspondence regarding the return of a lined friction plate from a 4 1/4-litre Bentley chassis for examination due to a clutch slipping complaint. | ||
| View original record | K/W. KC to..Rm/Smth. K/KC/DPB/2.1.37. We are returning to you under cover of our advice note No.93, the lined friction plate removed from 4¼-litre Bentley chassis No.B.92.GA, on the instructions of… | ||
| scan0225 | Bentley clutch complaints and potential solutions. | ||
| View original record | Rm/GWH. from Rm. Rm10/R.4.12.36. BENTLEY CLUTCH COMPLAINTS. Thanks for your note of December 3rd. I recommended to C. twelve months ago, as you will see from the attached copy memo, that if a customer… | ||
| scan0226 | Recurring clutch failures on Bentleys and the comparative cost of repair versus replacement with a Borg & Beck clutch. | ||
| View original record | COPY. W/S - C. x. to Hd. Hs/Rm.35/KW.25.11.35. Clutch Failures on Bentleys. We see from the Quarterly Complaint list that a considerable amount of trouble is being experienced with Bentley clutches.… | ||
| scan0227 | Technical note on the introduction of castellated nuts on Bentley 25/30 clutches and the required adjustment process. | ||
| View original record | Hd. from Rm/Smth. C. to Wx. C. to RHC. C. to By. cf to Rm/GWH. BENTLEY & 25/30 - CLUTCH. Recent and all future B. & B. clutches will be found to have castelllations on the eyebolt adjusting nuts. This… | ||
| scan0228 | Clutch complaint for a Bentley 3.5-litre, chassis B.130 CR. | ||
| View original record | Rm. from Rm/GWH. Kingsbury. 30.11.36. BENTLEY 3 1/2-litre. CLUTCH COMPLAINT. A Bentley owned by Lt.Col. Cohen Chassis B.130 CR. Mileage 19,991 was towed in here. The clutch had been burned out. Both… | ||
| scan0229 | Enquiry into Bentley flywheels and the argument for a solid ring-out type. | ||
| View original record | To HS/Rm Cricklewood Oct 22nd '36 Bentley I have made enquiries at Kingsbury re flywheels on Bentleys. Their report is no flywheel has been changed during the existence of any trouble whatever. This I… | ||
| scan0230 | Clutch complaint for a Bentley B102FB, detailing its failure and suspected cause. | ||
| View original record | To H/S/Rm Kingsbury Oct 8th Bentley B102FB Clutch Complaint of Mr B H Swindon The above Car had to be towed in yesterday due to the clutch having burnt out. The following is the record of this clutch.… | ||
| scan0231 | The correct procedure for clutch erection and timing markings for 25/30 HP and Bentley models. | ||
| View original record | QUH To By. c. to Rm. Cricklewood, 2nd. Nov. 1936. 25/30 HP. & Bentley Flywheel & Clutch. With regard to the fixing of the clutches your reference By/Twd. My report concerned Bentley chiefly as more… | ||
| scan0232 | Investigation into uneven clutch operation and distortion of the clutch housing on a Bentley. | ||
| View original record | To Hs/Rm. Cricklewood, Oct. 6th, 1936. I have been at Kingsbury this morning, Mr. Ferguson's Bentley is not ready. It was decided to have a look at the clutch and at the same time attend to the… | ||
| scan0233 | Faulty clutch plate from a Bentley (B-3-GP) causing excessive vibration. | ||
| View original record | (8) Oct. 6th, 1936. I am sending you a clutch plate taken out of B-3-GP, Barclay's Bentley. This plate has been losing clearance, and has been adjusted three times during 3,911 miles. I came in again… | ||
| scan0234 | Clutch complaint and subsequent examination for a Bentley B-102-FB. | ||
| View original record | To Hs/Rm. c. to Hs/Smth. Kingsbury, Oct. 8th. 1936. Bentley B-102-FB. Clutch Complaint - Miss. B. F. Swinden. The above car had to be towed in yesterday due to the clutch having burst out. The… | ||
| scan0235 | Complaint regarding transmission rattle and clutch engagement on a Bentley B.226.GA. | ||
| View original record | 25, Rue Gide, Levallois-Perret. Seine. France. GWH/IO/JAB. 27th August 1936. To. Hs/Rm. From. G.W.H. COMPLAINTS. I have tried Favier's Bentley B.226.GA. with the new complete clutch fitted. The… | ||
| scan0236 | The performance of a Bentley clutch after a 500-mile test in London traffic. | ||
| View original record | To Hs/RM. Cricklewood, July 27th. Bentley Clutch. This car has run 500 miles in the London traffic during last week. The clutch is still good and no sign of wear. On a steep incline there is a… | ||
| scan0237 | Poor flywheel finish on Bentley and 20/25 models causing clutch judder. | ||
| View original record | G.W. Hancock, Esq., Rolls-Royce Ltd., Claremont Road, Cricklewood, London, N.W.2. When discussing clutches with you I forgot to mention that we find that the finish of the flywheel on Bentleys and… | ||
| scan0238 | Monthly report on customer complaints regarding the Bentley 4.1/4 Litre Borg & Beck clutch. | ||
| View original record | To. Sg. From Hs/GWH. c. Wor. c. E. c. Hy. c. Mx. c. Hd. MONTHLY REPORT ON CUSTOMERS' COMPLAINTS BENTLEY 4.1/4 LITRE. I) BORG & BECK CLUTCH. The complaint was jaggers when engaging. With a new design… | ||