Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Diagnosing vibration issues on experimental car 12-EX and proposing solutions. | ||
| View original record | To Hs. from R. c. to BJ. BY. c. to Wor. CWB. c. to PN. X7010 R1/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… | ||
| Scan002 | Standardisation of steel shells for main crankshaft bearings. | ||
| View original record | H3 RR 755 (10M) (DB130 12-9-24) MS 301225 Handwritten: X7010 COMPLETED 27.10.26 STANDARDISATION of CHASSIS PARTS. Date 22.9.26 Box 1: Description of Parts: STEEL SHELLS FOR MAIN CRANKSHAFT BEARINGS.… | ||
| Scan003 | Revisions to the crankshaft and connecting rods for EAC.10 and 14 models. | ||
| View original record | BY. from E. c. to BJ. HS. [handwritten]Y7010[/handwritten] E1/M25.11.27. X. 8010 X. 7010 X. 8030 X. 7030 X. 8000 [handwritten]X.7000[/handwritten] EAC.10 & 14 CRANKSHAFT AND CONN. RODS.… | ||
| Scan004 | Correspondence sending detail drawings for Duralumin main bearing caps for the standard Phantom engine. | ||
| View original record | X7010 C. Hs. BY/Cgh9/K. 13. 12. 27. E.A.C.10 MAIN BEARING CAPS. As requested in your E2/M16.11.27., we send you herewith prints E.74325/6/7/8 of our detail drawings of the main bearing caps made in… | ||
| Scan005 | The sending of two models of Duralumin main bearing caps for the Phantom engine. | ||
| View original record | E. C. Hs. X7010 BY/Cgh7/G.17.12.27. EAC.10. MAIN BEARING CAPS. --------------------------- Further to BY/Cgh9/K.13.12.27. we are sending you under separate cover two models of the main bearing caps… | ||
| Scan006 | Materials and experiments for car engine crankshaft dampers. | ||
| View original record | E. Hs. from R. BY. c. to BJ. Wor. X7010 R2/M2. 2.28. CAR ENGINES - CRANKSHAFT DAMPERS. X.634 X.7010 X.8010 X.8300 I am expecting a report on he best material for the friction surface. Our old practice… | ||
| Scan007 | Approval of a design for crankshaft oiling, with an instruction not to alter the rear end of the car. | ||
| View original record | E. Hs. BY. X. 7010 R1/M2.2.28. c. to BJ. Wor. EAC.10 CRANKSHAFT OILING. ------------------- Re. LeC.2502 I quite approve this, but I should not alter the rear end. I am so anxious to get this car on… | ||
| Scan008 | Crankshaft and bearing lubrication for the Japan III model, detailing issues with oil supply and the proposed remedy. | ||
| View original record | To R from Hs/ACL. c. to BY. 47010 HS/ACL1/LG19.4.28. INDIA 111. CRANKSHAFT AND BEARINGS. 45010 We have received Lec. 2545 shewing the arrgt. of the crankshaft and bearings and appreciate the necessity… | ||
| Scan009 | Testing a crankshaft oiling system using grooveless bearings. | ||
| View original record | contd :- -2- system employing grooveless bearings - like the Curtiss - which we are at present testing on some of the RR.F. engines, we use a somewhat different arrangement of piping in the… | ||
| Scan010 | Recommendations for oil supply and pressure for crankshafts using grooveless bearings. | ||
| View original record | contd :- -3- We recommend in all cases where grooveless bearings are employed that the crankshaft journals be provided with three holes equally spaced to supply oil to the big end bearings and that… | ||
| Scan011 | Request to modify two flywheels to test a 12-EX crankshaft without its slipper wheel. | ||
| View original record | To RHC. from Hs/Rm. x7010 Hs/Rm2/LG1 8.5.28. [Handwritten] x7010 x7300 We want to try 12-EX crankshaft without the slipper wheel. Owing to the construction of the new type slipper drive we cannot do… | ||
| Scan012 | Modification to the oil tubes in F. & H. engine and chassis crankshafts. | ||
| View original record | To BY. from RHC. c. to RG. c. to Hs. 47010 RHC2/BE11.7.28. RE. F. & H. ENGINES AND CHASSIS CRANKSHAFTS. X.7010 X.3865 X.8010 X.4458 X.5010 With reference to the oil tubes in the crankshaft pins. It… | ||
| Scan013 | Difficulties experienced with new crankshaft dampers on 20 HP and 40/50 HP cars. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to BY. X7010 NEW TYPE CRANKSHAFT DAMPERS. X.7010 X.634 X.5010 20 HP. LeC. 2457 40/50 HP. LeC. 2462/2472. We have now had a considerable amount of… | ||
| Scan014 | The engineering challenges and potential solutions for engine damping, spring systems, and timing. | ||
| View original record | contd :- -2- If we could get away from metal stops, the trouble could not exist, perhaps we should be better off if we made the spring come choc-a-bloc as a stop. We feel that rubber with its variable… | ||
| Scan015 | Slipper wheel drives and the future requirement for reduced inertia dampers at higher engine speeds. | ||
| View original record | contd :- -3- speeds of our present power units, for the time being at any rate, there does not seem to be any reason for departing from the present slipper wheel and drive which is simpler than the… | ||
| Scan016 | Internal request to order 6 cork washers to a specific model and thickness. | ||
| View original record | X7010 To Roy/Ms. from Hs/Rn. Hs/Am/LG19.7.28. Will you please order for us :- 6 cork washers to the attached model, only without the oil grooves, and .100" thick. Hs/Rn. | ||
| Scan017 | Query regarding the delay in developing a longer duration cam for the 'SS' engine. | ||
| View original record | Hs. BY. from R. c. to Wor. x7010 R5/M20.10.28. 'SS' ENGINE. X.7090 X.7010 Why can't we get on more quickly with the longer duration cam - present exhaust used as inlet - (E2/M30.8.28 - nearly two… | ||
| Scan018 | Directive outlining modifications for the S.S. Chassis, specifically for the connecting rod and crankshaft. | ||
| View original record | E. Dept. c. Hs. C. R.H.C. X7010 BY1/G.9.11.28. S.S. CHASSIS. ---------- X7030 For the eight sets which we are instructing, Experimental Department recommend the following modifications :- 1/-… | ||
| Scan019 | Providing recommendations on connecting rods and crankshaft lubrication for the 'SS' engine. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to B. X7010 X7030 X7770 'SS' ENGINE. CONNECTING RODS. We recommend that on the first batch of 'SS' cars we stick to the present Phantom conn. rod and not… | ||
| Scan020 | The crankshaft oiling scheme, comparing the current Phantom system with a new one for the 'SS' model. | ||
| View original record | contd :- -2- As a matter of fact the Production Test would like more oil. Springfield are using extra oil. In view of this we think it would be very unwise to depart from the present Phantom… | ||
| Scan021 | Requesting a scheme to employ a Phantom crankshaft damper and spring drive on the 'SS' crankshaft. | ||
| View original record | To BY. from Hs. c. to Wor. X7010 Hs6/LG12.11.28. 'SS' SPRING DRIVE & DAMPER. X7010 It is practically decided that we shall revert to the standard Phantom type of slipper wheel and spring drive on the… | ||
| Scan022 | Decision to adopt the Phantom crankshaft lubrication system for the 'SS' engine. | ||
| View original record | X7010 To BY. from Hs. c. to Wor. Hs5/LG14.11.28. 'SS' CRANKSHAFT LUBRICATION. X.7010 X.7980 It has been decided to employ the same type crankshaft lubricating system as used on the Phantom. We shall… | ||
| Scan023 | Test on an experimental 'SS' crankshaft and its balance weights. | ||
| View original record | BY. from E. c. to BJ. Hs. X7010 E4/M24.1128. EXPERIMENTAL 'SS' CRANKSHAFT. X.7010 BALANCE WEIGHTS. X.1482 We send you herewith drg.Lec.2616 shewing the above. The idea is to make a test of an engine… | ||
| Scan024 | Issues with the 20 HP car, including vibration and poor performance, recommending a delay in its production. | ||
| View original record | To R. To Wor. } FROM HS. X7010 HS2/LG2.1.29. 20 HP. CAR. X7770 X7941 X7230 Although we have sent the 20 HP. car to France we are not very pleased with it. We thought however we would attempt to carry… | ||
| Scan025 | Recommendation to continue production of the 20 HP car with modifications while the 'SS' model is completed. | ||
| View original record | contd :- -2- that it would be wise to carry on with the present standard 20 HP. for a little longer. The recommendation is that we should carry on with the 150 standard 20 HP. cars for which material… | ||
| Scan026 | High oil consumption due to a crankshaft leak and a proposed reversion to a previous design. | ||
| View original record | X7010 To Wor. from Hs/Rm. Hs/Rm2/T5.1.29. X986 With reference to SG3/E4.1.29, the high oil consumption is due to a leak from the rear end bearing of the crankshaft. We have altered the design of the… | ||
| Scan027 | Proposed alteration to the 'SS' crankshaft rear oil retainer to improve efficiency. | ||
| View original record | R. from E. c. to BJ. BY. c. to Wor. Hs. 'SS' CRANKSHAFT REAR OIL RETAINER. X.7010 X.7000 The leak at the above point reported on the 10,000 miles test has not been experienced at Derby. Nevertheless… | ||
| Scan028 | Drawings for the 'SS' crankshaft rear oil retainer. | ||
| View original record | BY. from E. c. to BJ. Hs. X. 7010 E1/M18.1.29. 'SS' CRANKSHAFT REAR OIL RETAINER. We send herewith drgs. LeC. 2632 and 2636 mentioned in our memo. E2/M7.1.29. to R. - copy to xxxxxx. yourself. We have… | ||
| Scan029 | Proposal for 'SS' main bearings without liners, referencing blueprint LeC.2639. | ||
| View original record | R. from E. c. to BJ. Hs. BY. 47010 E3/M19.1.29. 'SS' MAIN BEARINGS WITHOUT LINERS. We send herewith a blueprint of LeC.2639 shewing our proposal for the above to overcome the difficulty experienced by… | ||
| Scan030 | Analysis and proposed solution for oil starvation in the 'SS' lower half crankchamber during heavy braking. | ||
| View original record | 47010 R. from E. E2/M24.1.29. c. to BJ. Hs. BY. 'SS' LOWER HALF CRANKCHAMBER. X.7000 X.7010 It is complained, and has been demonstrated to us, that after heavy braking the oil pressure falls away to… | ||
| Scan031 | Table detailing specifications for 40/50HP Chassis Crankshafts. | ||
| View original record | 40/50HP Chassis Crankshafts. Drawing No. | Shape of Web. | Dia: of Journal. | Dia: of Crankpin. | Front End Spring Drive. | Rear End Thrust. | Remarks. ---|---|---|---|---|---|--- E.75216. | Parallel.… | ||
| Scan032 | Loss of oil pressure after braking and proposing tests and sump modifications. | ||
| View original record | R. from E. c. to Sg. Hs. BY. +7010 E1/447. 2. 29. LOSS OF OIL PRESSURE AFTER BRAKING. X. 7010 X. 7000 [strikethrough]X. 7000[/strikethrough] X. 7420 [strikethrough]X 7190[/strikethrough] We suggest… | ||
| Scan033 | Continued report comparing oil suction systems on various chassis, discussing issues and proposing strainer design improvements. | ||
| View original record | contd :- -2- an open bottom half test would confirm this. The Arrol Aster engine is fitted with leather flap valves over the wholes through the cross webs but we do not want to propose anything of… | ||
| Scan034 | Requesting oil pressure figures for the 'SS' model during a cold start and warm-up period. | ||
| View original record | Hs. from E. c. to Sg. X7010 E1/M15.2.29. 'SS' OIL PRESSURES. X. 7010 X. 7060 X. 7000 We should be glad if you would let us know at some convenient time to what figures the various oil pressures, high,… | ||
| Scan035 | Maximum oil pressures for an 'SS' engine from a cold start. | ||
| View original record | To E. from Hs. X7010 Hs7/LG19. 2. 29. 'SS' OIL PRESSURES. X7010 X7060 With reference to E1/M15. 2. 29. On starting up the SS. engine from cold and running at approx. 500 r.p.m. the oil pressures… | ||
| Scan036 | Comparing oil pressures for valve gear lubrication during engine warming up versus normal operation. | ||
| View original record | X7010 E2/M25. 2. 29. R. from E. c. to Sg. Hs. BY. RE. VALVE GEAR LUBRICATION. X. 7060 X. 7010 The attached report Hs 7/LHd9. 2. 29 shews that the intermediate oil supply as we anticipated reaches… | ||
| Scan037 | Maximum oil pressure values for 'SS' engines X.7010 and X.7060 on a cold start. | ||
| View original record | E. from Hs. Hs7/LG19.2.29. 'SS' OIL PRESSURES. X. 7010 X. 7060 With reference to E1/M15.2.29. on starting up the SS. engine from cold and running at approx. 500 r.p.m., the oil pressures attain the… | ||
| Scan038 | Oil leakage from the S.S. Crankshaft rear oil flinger, detailing clearances and an improved double flinger design. | ||
| View original record | R. from E. c. to Sg. Hs. c. to BY. X. 7010 E1/M13.3.29. S.S. CRANKSHAFT REAR OIL FLINGER. We understand that when the above is made to the original LeC. design with the clearance at A. fig.1. as shewn… | ||
| Scan039 | Re-tinning operation for Nitralloy components. | ||
| View original record | Wor. Hy. Sy. RHC. COPY. X7010 BY6/G21.3.29. NITRALLOY - RE TINNING OPERATION. Y5010 X4469 I have before expressed the opinion that the best method of cleaning, fluxing and tinning is to :- a/ - Clean… | ||
| Scan040 | Hardening process for nitro alloy crankshafts, particularly whether to harden the webs. | ||
| View original record | To BY. To Wor. } From Hs/Rn. c. to Hy. c. to RHC. c. to E. c. to Sft. X7010 Hs/Rn./LG27.3.29. NITRO ALLOY. 46469 With reference to BYS/G21.3.29. which has been handed to us by RHC. While E. was at the… | ||
| Scan041 | Technical table comparing different car crankshaft specifications and features. | ||
| View original record | R.R. CAR CRANKSHAFTS. Left Margin Text: 20 H.P. Left Margin Text: PHANTOM I & S.S. TABLE: Column Headers: - PART No. - DESCRIPTION - TYPE OF HOLE AND SPRING DRIVE - WEBS: SHAPE; WHETHER BEVELLED. -… | ||
| Scan042 | Cover note for a tabulated list of crankshafts. | ||
| View original record | To E. from Hs/Rn. x7010 Hs/Rn2/LG9.5.29. x5010 Herewith a tabulated list of crankshafts which might be of some use to you. Hs/Rn. | ||
| Scan043 | Comparative specification table for crankshafts used in 20 HP and Phantom I & II car models. | ||
| View original record | R.R. CAR CRANKSHAFTS. TABLE HEADERS: PART No., DESCRIPTION, TYPE OF NOSE AND SPRING DRIVE, WEBS: SHAPE; WHETHER BEVELLED, OILING SCHEME, TESTED STIFFNESS LBS/DEG/RAD., CALC. STIFFS. x10^6 LBS… | ||
| Scan044 | Design, materials, and adjustment of a car engine crankshaft damper. | ||
| View original record | Hs. ) FROM R. Rv. ) C. to Sg. X7010 SECRET. R2/M3.6.29. CAR ENGINES CRANKSHAFT DAMPER. X634 X5010 X7010, I am inclined to think that the reason these have been more difficult and exacting in their… | ||
| Scan045 | Clarifying the stiffness of the J.2 series crankshaft and noting improvements to the 20 HP crankshaft. | ||
| View original record | Sg. c. Hs. ------- X7010 BY2/G.5.6.29. CRANKSHAFT. ---------- Referring to Sg9/E.3.6.29, I do not know where the idea has arisen that J.2 series incorporates a stiffer and stronger crankshaft. There… | ||
| Scan046 | Recommendation to suspend the machining of a chamfer on 'SS' crankshafts due to a decrease in stiffness. | ||
| View original record | To BY. From Hs. c. to E. Wor. X7010 BHsl/LG29.6.29. 'SS' CRANKSHAFTS. We recommend that we hold up machining the chamfer on the crank pins. Tests we have made measuring the stiffness of the shafts… | ||
| Scan047 | Improved slipper flywheel and spring drive, outlining modifications needed for the crankshaft and wheelcase. | ||
| View original record | BY. from E. c. to SG. HS. X7010 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 from… | ||
| Scan048 | The torsional stiffness testing of a large pin crankshaft compared to standard models. | ||
| View original record | X7010 To R. from Ha/Tsn. c. to SE. Wor. c. to c. to Ry. Ha/Tsn.1/WJ.29.8.29. X7010 X8010 X1418 S.S. CRANKSHAFT WITH LARGE PINS. We have twisted this shaft in its case, and find it to be 17% stiffer… | ||
| Scan049 | Requesting a drawing for a low inertia slipper wheel adapted to a stiffer crankshaft. | ||
| View original record | To By. from Hs/Rm. X7010 Hs/Rm.2/MJ.4.9.29. S.S. STIFFER CRANKSHAFT. ------------------------- X. 7010 X. 4499 When we bring in the stiffer crankshaft we propose to incorporate the low inertia slipper… | ||
| Scan050 | Machining and testing two S.S. Nitro Alloy crankshafts with different bearings. | ||
| View original record | To BY. From HS/Rn. X7010 Hs/Rn.5/MJ.13.9.29. S.S NITRO ALLOY CRANKSHAFTS. X7010. X499 We understand that two of these are now available. We should like these both to be machined with the larger pins… | ||
| Scan051 | Specification table for various crankshaft models and their applications. | ||
| View original record | P.I / P.II 7010 50 CRANKSHAFTS TABLE: | PIECE No | SHAPE OF WEB | DIA OF JOURNAL | DIA OF CRANKPIN | SPRING DRIVE END | REAR END THRUST | REMARKS. | |---|---|---|---|---|---|---| | E75216 | PARALLEL |… | ||
| Scan052 | Phantom II high-speed engine vibration experiments, investigating the effects of replacing the crankshaft and removing clutch components. | ||
| View original record | To R. From Hs/Ten. c. Sg. c. WOr. Da. c. E. Ry. *7010 Not sent out Hs/Ten5/AD8.11.29. x634. x7010 PHANTOM II HIGH SPEED ENGINE VIBRATION EXPERIMENTS. -------------------------------------------------… | ||
| Scan053 | Test report detailing engine vibration analysis after fitting a crankshaft and flywheel. | ||
| View original record | Hs/Dms5/AD8.11.29. contd. -2- 45 m.p.h. in 2nd. gear, approximately an 80% cure. The former booming periods at 25 and 31 m.p.h. had gone. (3) Crankshaft fitted - Flywheel as before. The engine now… | ||
| Scan054 | Engine vibration analysis, observing crankcase movement and the effects of balance weights. | ||
| View original record | Hs/Tem5/ADS.11.29 contd. -3- bubbles of air and oil, and could be seen slowly and clearly with the Ashdown Rotoscope. The two blocks were rising and falling on the crankcase at crankshaft frequency… | ||
| Scan055 | Engine vibration tests with and without counterweights and a flywheel. | ||
| View original record | He/fsn5/ADS.11.29 contd. -4- (5) Test with and without counterweights repeated. with no flywheel. This time we could detect a reduction in the vibration inside the car, on fitting the balance weights… | ||
| Scan056 | Road and motoring tests to determine and reduce engine vibration by testing different crankshaft and flywheel configurations. | ||
| View original record | -5- suppressed all vibration of the crankcase. As before, however, the difference noticeable inside the car was only slight. We were motoring it in 2nd. gear and the car is becoming a bit worn and… | ||
| Scan057 | Vehicle noise, vibration, and harshness testing before and after modifying the flywheel and clutch. | ||
| View original record | -6- all periods, noises etc. before and after removing the rear half of the flywheel and clutch parts. It was rather smoother than the average S.S. car; and in its standard condition it had the… | ||
| Scan058 | 3rd gear and flywheel vibration analysis. | ||
| View original record | Hs/Tans/ADS.11.29 contd. -7- 3rd Gear. 32 - 35 period now at approx. 28 m.p.h. 40 - 43 " " 36 m.p.h. 48 - 55 vibration smoother. There was a bad rattling vibration at 60 m.p.h. now instead of 65… | ||
| Scan059 | Tests concerning crankshaft and slipper drive vibration, with results from S.S. and Chrysler models. | ||
| View original record | -8- We can consider the above tests under two separate headings, crankshaft and flywheel. 1. CRANKSHAFT. Results of tests on this and slipper wheels etc. are briefly :- (1) We have shewn on the S.S.… | ||
| Scan060 | Comparison of standard Phantom type slipper drives and low inertia spring drives, focusing on overhang, vibration, and engine feet placement. | ||
| View original record | -9- inertia in the nose of the shaft, but only a small percentage reduction of the total inertia of the crankshaft system. We think the most important difference between the std. Phantom type slipper… | ||
| Scan061 | The use and effectiveness of balance weights on an engine crankshaft. | ||
| View original record | Hs/Tan5/ADS.11.23 contd. -10- obtrusiveness of the engine, apart from the use of rubber. (3) Balance weights. We have shewn that these are a slight improvement on the Chrysler, and we have the fact… | ||
| Scan062 | Technical discussion on crankshaft vibration, torsional periods, and balance. | ||
| View original record | He/Tan5/AD.11.29 CONTD. -11- on existing crankshafts, owing to the possibility of being misled. (4) Crankshafts. We cannot yet say that the large pin crankshaft is an improvement in high speed… | ||
| Scan063 | Crankcase and crankshaft vibration and distortion during testing, with a comparison to a Chrysler engine. | ||
| View original record | -12- the complete crankshaft, great lateral stiffness of the shaft, and in addition possibly some degree of support from the crankcase. We have striking evidence now from the front, middle, and rear… | ||
| Scan064 | Crankshaft and crankcase vibration, comparing materials and summarising flywheel test results. | ||
| View original record | -13- vibration of crankshaft and crankcase will be much worse when the rods and pistons are present. It is easy then to understand the efforts of some firms, particularly the Americans, to suppress… | ||
| Scan065 | Flywheel vibrations, their causes, and comparisons to similar phenomena. | ||
| View original record | -14- SECTION 2. FLYWHEEL. (Contd). are large amplitude vibrations when the rear half of the flywheel is removed, and these are reduced in amplitude and frequency by refitting the flywheel. (6) The… | ||
| Scan066 | Hypothesis on flywheel vibration frequency and crankshaft smoothness, with proposed experiments. | ||
| View original record | -15- Hs/Tan5/DB.11.39.contd. a lot of facts in to be sure of our theory. From the above hypothesis we would expect to gain an improvement from either raising or lowering the frequency of vibration of… | ||
| Scan067 | Key engine design features for longevity and smoothness, and the factors causing increased engine speeds. | ||
| View original record | -16- Hs/Tan5/ADA.11.29..contd. GENERAL. All our evidence, from theory, from test and from watching closely the changes in other cars, goes to prove the importance of the following three features to… | ||
| Scan068 | Methods to improve engine longevity and smoothness, comparing a heavier crankshaft to a stiffer crankcase. | ||
| View original record | -17- Hs/Tuns/DG.11.29..contd. In addition to these, easy change gear boxes may shortly be forced upon us. So far, little has been done in parallel to help bearings and crankcases etc, to withstand the… | ||
| Scan069 | Crankshaft design, recommending experiments with heavier counter-balanced shafts and stiffer crankcases. | ||
| View original record | -18- Hs/Ten5/AD. 8.11.29. Contd. vibration had added enormously to the life of the bearings. In view of the fact that when reporting on the Chrysler car (already heavier than ours) we considered the… | ||
| Scan070 | Page discussing tests to try and measure distortions in webs. | ||
| View original record | -19- Hs/Tsn3/ADS.11.29.Contd. tests, to try and measure distortions in webs etc. Hs/Tsn. | ||
| Scan071 | Design blueprint for a balance-weight crankshaft with multiple section views and design features. | ||
| View original record | BALANCE - WEIGHT CRANKSHAFT. FEATURES: 1). JOURNALS 2,3,5&6 HAVE 1/2 SIZE BALANCE WEIGHTS INTEGRAL WITH SHAFT. 2). JOURNALS 1,4,&7 HAVE FULL SIZE BALANCE WEIGHTS, DETACHABLE. PINS CAN NOW BE GROUND.… | ||
| Scan072 | Blueprint detailing a mechanical lever assembly with a parts list. | ||
| View original record | F.80175 BOLT., K.4210. NUT., K.4607. SPLIT PIN., BRAZING ARRGT F.80159, N Sch 2906., afl, 22-8-29, S.S I 7430, (KA.214. BOLT., K.4310. NUT., K.9008. SP'G WASHER, F.80158., D.72011., G.50483.,… | ||
| Scan073 | Test results for a crankshaft under various modifications. | ||
| View original record | X7090. S.S. C'SHAFT MI TESTS E79640:- LARGER PINS. Wt = 92 LB 7 OZ t = 17.4/20 = .87 SECS. E78456:- STANDARD Wt:- 79 LB 10 OZ t = 17.4/20 = .87 SECS E78456'- CHAMFERED Wt:- 75 LB 5 OZ t = 16.6/20 =… | ||
| Scan074 | Technical memorandum comparing the standard Phantom II crankshaft with a stiffer version (E.79351) with large pins. | ||
| View original record | X7010 To R. from Hs/Tsn. c. Sg. c. Wor. c. Rs. c. E. By. Hs/Tsn/H.14.11.29. Re : PHANTOM II CRANKSHAFT WITH LARGE PINS E.79351. The torsional period of a standard Phantom II car is 3600 R.P.M. and… | ||
| Scan075 | The design, operation, and timing effects of a low inertia crankshaft damper for the Phantom 11, K.2B series and onwards. | ||
| View original record | To Hm. From Hs/Rn. For Depot Sheet. Y7010. Hs/Rn.1/MJ.3.1.30. PHANTOM 11 LOW INERTIA CRANKSHAFT DAMPER. K.2B. SERIES AND ONWARDS. Y7010. X4499 (1) OBJECTS OF DESIGN AND RESULTS ACHIEVED. It has been… | ||
| Scan076 | Instructions for timing, dismantling, load measurement, and testing of a slipper wheel assembly. | ||
| View original record | -2- one or two degrees. When the starting handle is released, owing to the damping friction on the plate, the timing may not go back to the position which it will assume when the engine is running.… | ||
| Scan077 | Diagrammatic representation of a K.2.B. Series Phantom II Low Inertia Damper. | ||
| View original record | K.2.B. SERIES ON PHANTOM II LOW INERTIA DAMPER DIAGRAMATTIC REPRESENTATION OF E.79915 C B E O G A H D | ||
| Scan078 | Backing sheet with a 'RECEIVED' stamp from the Derby works. | ||
| View original record | RECEIVED 8 JAN 1930 DERBY. | ||
| Scan079 | Blueprint showing a cross-section and front view of a flywheel damper with a corrugated plate. | ||
| View original record | FLYWHEEL DAMPER WITH CORRUGATED PLATE. A B C d E f G H M N O P Q R S t | ||
| Scan080 | Blank page with a purple 'Print Room' date stamp from Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 3 JAN 1930 DERBY. | ||
| Scan081 | Technical memorandum discussing troubleshooting an oil leak at the rear end of a P.2. crankshaft. | ||
| View original record | Hs. from E. c. Sg. By. c GWH (At Chateauroux) X7010. E2/M12.7.30. Re. OIL LEAK AT REAR END OF P.2. CRANKSHAFT. The above trouble is a somewhat elusive one, and owing to the inaccessibility of the… | ||
| Scan082 | Testing of Nitro Hardened Steel crankshafts and recommending a production order. | ||
| View original record | N7010 To R. From Hs. c. to Sg. Wor. c. to By. E. c. to Rg. Hs.2/MJ.19.9.30. X.4469. X.7010. NITRO HARDENED STEEL. With reference to R4/M16.9.30. We have completed 16,000 miles on 23-EX. car fitted… | ||
| Scan083 | Expressing caution about standardizing Nitro Hardened Steel for crankshafts due to insufficient testing mileage. | ||
| View original record | COPY. To Hs. From Sg. c. to Wor. By. SG33/E29.9.30. X.4469; X.7010. Re. Nitro Hardened Steel. Referring to Hs2/MJ.19.9.30. and the suggestion that we should allow 50 crankshafts made in the above… | ||
| Scan084 | Production testing of Nitro Hardened Steel for Phantom crankshafts. | ||
| View original record | X7010- To Sg. From Hs. c. to Wor. c. to Ey. Hs.1/W.2.10.30. X.4469. X.7010. Re. NITRO HARDENED STEEL. Replying to Sg33/L29.9.30. We consider we shall never find out possible 'snags' of Nitro Hardened… | ||
| Scan085 | Reduction in the production order quantity for chassis using Nitro Hardened Steel. | ||
| View original record | COPY. X7010. To Hs. from Sg. c. to Wor. By. re. Nitro Hardened Steel. Sg13/E13.10.30. X.4469. X.7010. Referring to Hs.1/MJ.2.10.30 I note all that is said on this subject. I certainly think it would… | ||
| Scan086 | Proposing to reduce an order quantity of Nitro Hardened Steel to 12 for economic reasons. | ||
| View original record | To BY. from Wor. To Hs. " c. to Sg. X / 010 X.4469. X.7010. Wor3/T.15.10.30. Re. Nitro Hardened Steel. Referring to Sg13/E13.10.30. and Hs.1/MJ.2.10.30., I think it would be economically sound to… | ||
| Scan087 | Instruction to order 12 forgings of a standard type Phantom II crankshaft in nitralloy steel. | ||
| View original record | COPY. O.O. c. Wor. c. Hs. X.4469. X.7010. BYLO/G.16.10.30. It has been decided that we should order 12 forgings of our standard type P.11. crankshaft in nitralloy steel. The new piece number for this… | ||
| Scan088 | Experimental increase in crankpin diameter for the 40/50 HP crankshaft and the potential to revert the dies. | ||
| View original record | Hs. 17010 BY/SS3/J.31.10.30. 40/50 H.P.Crankshaft, 2.375" dia.Crankpins. When the diameter of the crankpins was increased from 2.125" to 2.375" experimentally, production was anticipated to the extent… | ||
| Scan089 | From 'R.' proposing a trial for an 'interlaced 6 throw crankshaft' design on a P.V. 12 cylinder aero engine. | ||
| View original record | RG. HS. } FROM R. BY. EFC. } X7015 RL/M1.12.30. Copy to SG. WOR. INTERLACED CRANKSHAFTS. X.8010 X.5010. X.634. Some time ago I schemed what we termed the interlaced 6 throw crankshaft. This is not the… | ||
| Scan090 | Crankshaft balancing, crankchamber stiffness and vibration reduction for 25HP and 45HP engines. | ||
| View original record | E. BY.} FROM R. HS. (At Le Canadel.) Y7010 R2/M20.12.30. C. to SG. WOR. C. to RG. DA. 25HP. AND 45HP. ENGINES. X.7000 X.634 X.5000 X.Y010. X.5010 We have now settled that we must not use cast iron… | ||
| Scan091 | Urgent improvements for the 25HP and 45HP models, focusing on crankshafts, balance, and suspension. | ||
| 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… | ||
| Scan092 | Design considerations for a 25HP and 45HP balanced crankshaft. | ||
| View original record | E. RG.) FROM R. BY. HS.) (At Le Canadel.) Copy to SG. WOR. K 010 R2/M23.12.30. X.5010. 25HP. & 45HP. BALANCED CRANKSHAFT.X.7010. X.634. We thank RG/TSN. for his work, and blueprint of 18/12/30, and I… | ||
| Scan093 | Engine crankshaft balancing, counterweights, and flywheel modifications for smoother 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… | ||
| Scan094 | Test results for the 20-EX model, detailing Torsional Period, RPM, MPH, and speedometer checks. | ||
| View original record | FOR FILES. X/7010 20-EX. 9.1.31. 2.125 Crank Pins. Journals 2.625 X.7010. 82.M.P.H. X.634. The master Torsional Period on 20-EX begins at 3760 R.P.M. that is 100.M.P.H. on Top gear. The speedometer… | ||
| Scan095 | Test results for crank pins, torsional period, and top gear speed for model 19-EX. | ||
| View original record | FOR FILES. X/1010 19-EX. 15.1.31. , X.7010. X.634. 2.375.dia. crank pins. Top Torsional period 3690 R.P.M. 98.2 M.P.H. Top Gear. Speedometer checked by 2 methods. I.A.Leslie. | ||
| Scan096 | Proposal to increase the thickness of the crankshaft flange and flywheel web to improve stiffness. | ||
| View original record | R. FROM E. X/7016 E2/MLO.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"… | ||
| Scan097 | Scheme for four balance weights for the Phantom engine, comparing two-stud and single-stud designs. | ||
| View original record | R. FROM E. C. to SG. WOR. C. to HS. BY. X7010 E3/M16.2.31. P. 2. BALANCE WEIGHTS. Please find herewith LeC. 3874. shewing the scheme for four balance weights for the Phantom. We have shewn the balance… | ||
| Scan098 | Covering note regarding the original document LeC. 2874 for P. 2. Balance Weights. | ||
| View original record | BY. FROM E. X7010 E4/M16.2.31. C. to HS. P. 2. BALANCE WEIGHTS. We send you herewith the original of LeC. 2874 shewing the above. E. | ||
| Scan099 | Modifications to the flywheel and crankshaft flange to reduce weight and improve bolting. | ||
| View original record | R. FROM E. C. to SG. WOR. C. to HS. BY. X 7010 E1/M27.3.31. P. 2. LIGHTER & STIFFER FLYWHEEL. X.7010. X.7300. Regarding your recent memo, with reference to the above, the stiffer crankshaft flange and… | ||
| Scan100 | The detailing of a four balance weight crankshaft and ordering a new forging in Nitro Alloy. | ||
| View original record | To BY. From Hs/Rm. Hs/Rm.2/MJ.6.3.31. FOUR BALANCE WEIGHT CRANKSHAFT TO LEC.2874. The scheme we want detailing of this shaft is the one requiring the new forging. We have made the temporary scheme… | ||
| Scan101 | Instruction to test a flywheel with 9 bolts instead of 6, using the same bolt diameter. | ||
| View original record | X7010 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… | ||
| Scan102 | Technical memorandum with sketches discussing various designs for attaching balance weights to a crankshaft. | ||
| View original record | E. BY.) FROM R. HS. ) (At Le Canadel.) C. to SG. WOR. P. 2. BALANCE WEIGHTS - LeC. 2874. I do not like the temporary single stud job because it looks like weakening a crankshaft (ultimately scrapping)… | ||
| Scan103 | And comparing different crankshaft balance weight schemes based on a telegram confirmation. | ||
| View original record | RG/TSN. E } FROM R. BY. HS (At Le Canadel.) X7010 R1/M13.3.31. copy to - SG. WOR. CAR WORK. CRANKSHAFT BALANCE WEIGHTS. I give below a confirmation of my telegram to Derby: "BALANCE WEIGHTS -… | ||
| Scan104 | Different engine balancing weight schemes and their implications. | ||
| View original record | (2) TSN's calculations shew now quickly the load changes with speed, slightly over 10% increase in speed putting up the bearing load 45%. This however must allow for bigger pins and big ends: speed… | ||
| Scan105 | New crankshaft with four balance weights and a stiffer rear flange for the Phantom II Chassis. | ||
| View original record | RECEIVED 21 MAR 1931 To RHC c. Hs/Rm 87010 BY/CS1/EH.20.3.31. PHANTOM II CHASSIS. Crankshaft with Four Balance Weights and Stiffer Rear Flange for Flywheel. Crankcase & Bearings - Sec: 5000.… | ||
| Scan106 | Highlighting assembly difficulties with the crankshaft, flywheel, and balance weights due to small clearances. | ||
| View original record | (2) May we point out, that owing to the thickening of the flange at rear of shaft, the difficulties encountered when assembling the crankshaft complete with flywheel, will be amplified, also the heads… | ||
| Scan107 | The decision against a special Nitro Alloy crankshaft for the Phantom II chassis. | ||
| View original record | X7010. To BY. From Hs. c. to RHC. Hs.9/MJ.23.3.31. PHANTOM 11 CHASSIS. CRANKSHAFT WITH FOUR BALANCE WEIGHTS. Replying to By/CS1/EH20.3.31. We do not believe it is worth while going ahead with the… | ||
| Scan108 | Use and effects of crankshaft balance weights on both aero and car engines. | ||
| View original record | K7010 R. C. Sg. Wor. C. Hs. E. By. Rg/Tsnl/DM.2.4.31. K7010 Y5010 Crankshaft Balance Weights. ------------------------- Our previous note with regard to the above referred to aero engines. We thought… | ||
| Scan109 | Analysis of crankshaft balancing schemes, including 4-weight and 8-weight options for a 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… | ||
| Scan110 | Comparing various crankshaft balancing schemes for different engine applications. | ||
| View original record | -3- C. K'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… | ||
| Scan111 | Comparison table of bearing loads for different crankshaft balancing schemes. | ||
| View original record | COMPARISON OF BRG. LOADS [Table Headers] Column 1: [Scheme], Column 2: TOTAL WEIGHT OF BALANCE WEIGHTS, Column 3: BEARING LOADS. Bearing Loads Sub-headers: 1&7, 2&6, 3&5, 4. [Table Content] A. 4WTS.… | ||
| Scan112 | Blank page with a purple ink stamp from the print room in the bottom right corner. | ||
| View original record | ROYCE, LIMITED PRINT ROOM, 23 APR 31 DERBY. | ||
| Scan113 | Comparison of five alternative balance weight schemes for a crankshaft. | ||
| View original record | ALTERNATIVE BALANCE WEIGHT SCHEMES A .866W .866W W .866W .866W B .433W .433W .433W .433W C .500W .250W .750W .580W D .580W .250W .250W .250W .1250W .580W E .580W .500W .580W .500W .500W .500W .500W W… | ||
| Scan114 | Page with a purple stamp from the print room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 23 APR 31 DERBY. | ||
| Scan115 | Merits of different engine balance weight schemes. | ||
| View original record | RG/TSN. E. } FROM R. HS. BY. } (At Le Canadel.) R1/M12.4.31. X.5010. X.7010. ALL ENGINES - BALANCE WEIGHTS. (1) Our first objection of these is to reduce crankchamber stresses and deflections. (2) Our… | ||
| Scan116 | Technical memorandum investigating the cause of chassis vibrations at specific speeds and their relationship to torque reactions. | ||
| View original record | X7010 Hs. E. } FROM R. Da. Ev. } (At Le Canadel) R2/M21.4.31. P.2. VIBRATIONS. X.634 X.7010. There is a strange agreement between these speeds which suggests that all the vibrations complained of in… | ||
| Scan117 | Potential chassis modifications to alter its periodicity. | ||
| View original record | R2/M21.4.31 contd. -2- We might also build a chassis with entirely different side members. The same depth heavy might not alter the periodicity, but deeper ones should. Weight and tie-rods might say… | ||
| Scan118 | Engine smoothness and the effects of various balance weight schemes on the flywheel and crankshaft. | ||
| View original record | X7010 Hs. from R. c. Sg. Wor. c. Rg. E. R5/M8.5.31. ENGINE SMOOTHNESS X.634 X.5010 X.7010. It is understood that you are satisfied with the smoothness of our engine without in any reducing the… | ||
| Scan119 | Design, benefits, and experimental requirements for engine balance weights. | ||
| View original record | X7010 Rg. } FROM R. HS. } c. Sg. Wor. c. Bv. 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… | ||
| Scan120 | Different balance weight schemes for flywheels and crankshafts, referencing experiments and 25 HP production designs. | ||
| View original record | R2/M9.5.31 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 does… | ||
| Scan121 | Technical note detailing calculations for balance weights and their effect on shaft critical speed. | ||
| View original record | For Files. 87010 20.5.31. P.II. BALANCE WEIGHTS TO LEC.2616. These balance weights have not been made to the drawing being only 1.04" thick. They are fitted to a shaft with chamfered webs, the amount… | ||
| Scan122 | Technical report on the effect of balance weights on flywheel wobble for Phantom II and 25 HP models. | ||
| View original record | Copy 7010 To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hs.5/MJ.23.5.31. X.634. X.5010. X.7010. BALANCE WEIGHTS P.2 & 25 HP. Effect of balance weights on Flywheel Wobble. PHANTOM II. On Phantom… | ||
| Scan123 | Flywheel and crankshaft balance weight testing to improve smoothness and reduce wear. | ||
| View original record | -2- Hs.5/MJ.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… | ||
| Scan124 | Summary of useful data for Phantom II and 25HP engines, detailing weights and performance characteristics of crankshafts and other components. | ||
| View original record | FILES. 87010. (handwritten) May 1931. X.634. X.7010. X.5010. USEFUL DATA. P.II. Torsional period at 100 m.p.h. or 3900 r.p.m. standard crankshaft. Torsional period of chamfered shaft, with 12 weights… | ||
| Scan125 | 'Eight Weight Scheme' for crankshaft balance weights required for a 10,000 miles test. | ||
| View original record | BY. FROM E. X7010 E1/M18.6.31. C. to SG. WOR. HS. P. 2. CRANKSHAFT BALANCE WEIGHTS EIGHT WEIGHT SCHEME. We send herewith LeC. 2922. dealing with the above. These weights are required for the car… | ||
| Scan126 | Experiment for a crankshaft with larger diameter journals and a revised balance weight scheme. | ||
| View original record | Ry. from E. c. Sg. Wor. c. Hs. X7010 E1/M3.7.31. X.7010 P.2. CRANKSHAFT WITH LARGER DIA. JOURNALS. We send herewith LeC.2925 dealing with the above. This drawing shows the existing crankchamber… | ||
| Scan127 | Calculations for 40/50 balance weights on a stiffened Phantom crankshaft. | ||
| View original record | 87010. To R. from Hs/Cry. c. Dg. Wor. c. E. De. Ry. Hs/Cry/2/AML.8.31. 8634. 40/50 BALANCE WEIGHTS. We have carried out some calculations as to the amount of balance possible with the stiffened… | ||
| Scan128 | Drawing and calculations for a balance weight. | ||
| View original record | 1 1/4" THICK 13.0" 4.6 lbs MOMENT 11.5 LBS-INS INERTIA = M/2 (a² + x²) 2.3 (3.5 + 16) = 45 LBS-IN² "BALANCE WEIGHT FOR LEC 2925 | ||
| Scan129 | The failure of friction plates on the 40/50 HP chassis low inertia damper and proposed remedies. | ||
| View original record | E. c. Wor. c. Hs. c. Mx. X7010 BY6/G.11.8.31. X634. 40/50 HP. CHASSIS - LOW INERTIA DAMPER. We have had one of the friction plates break in service. You will remember that early this year a similar… | ||
| Scan130 | Testing balanced crankshafts to resolve flywheel wobble and the resulting production and design implications for various models. | ||
| View original record | To R. From Hs. c. to Sg. Wor. c. to By. 67010. Hs.4/MJ.21.8.31. BALANCE WEIGHTS. R.4/M17.8.31. X.7010. X.5010. We had received instructions from W.W. to try a completely balanced crankshaft including… | ||
| Scan131 | Intentions and challenges of balancing crankshafts. | ||
| View original record | HS. FROM R. X7010 C. to SG. WOR. BY. RA/M17.8.31. BALANCING CRANKSHAFTS. X. 7010 X. 5010 We are wandering from our original intentions. (1) We never expected to completely balance the crank and big… | ||
| Scan132 | Future car crankshafts, including for the 25 HP model, be produced in hardened material. | ||
| View original record | To BY. From Hs. c. to Wor. 7010 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… | ||
| Scan133 | Proposal for a partly balanced and stiffened crankshaft for the Phantom II engine. | ||
| View original record | No Copying RECEIVED 1931 SEP O10. HS BY.5/G.17.9.31. PHANTOM 11 - CRANKSHAFTS. --------------------------- It is desirable to bring in at an early date a crankshaft which is partly balanced. In order… | ||
| Scan134 | Conclusions on engine balance weights, flywheel vibrations, and crankchamber deflections. | ||
| View original record | COPY. RC. BY. } FROM R. HS. } X7010 R2/M28.9.31. X634 X7010 X5010 X7000 X5000 C. to SG. WOR. E. re. BALANCE WEIGHT, FLYWHEEL, CRANKCHAMBER DEFLEC- TIONS, & BEARINGS. We have now straightened this… | ||
| Scan135 | Design parameters for a Phantom II balanced crankshaft using an 8-weight scheme. | ||
| View original record | x7010. By. From Hs/Gry. c. to By/SS. Hs/Gry.1/MJ.29.9.31. P.11 BALANCED CRANKSHAFT (8 WT. SCHEME). With reference to whether W.W. or Derby should design a balanced crankshaft from the existing… | ||
| Scan136 | Fixed dimensions for the Phantom II Balanced Crankshaft. | ||
| View original record | c.Hs/Gry. X7010. BY/SS1/J.30.9.31. P.II. Balanced Crankshaft With further reference to Hs/GRY1/MJ.29.9.31, please note Mr.Bailey has fixed the dimensions possible from existing forgings as follows:-… | ||
| Scan137 | Summary of a telephone conversation regarding Phantom II balance weights, 20/25 HP exhaust pipe failures, and Phantom II frame fittings. | ||
| View original record | E. Hs. BY/Cgh. BY/SS. X7010 X7010. X5230. X7380. BY.2/G.22.10.31. TELEPHONE CONVERSATION WITH WW. 21.10.31. ------------------------------------------- PHANTOM II. BALANCE WEIGHTS.… | ||
| Scan138 | Balancing of the Phantom II crankshaft from its present forging. | ||
| View original record | 87010. E. c. Hs. ------- BY.12/G.27.10.31. PHANTOM 11 - BALANCE OF CRANKSHAFT (PRESENT FORGING). -------------------------------------------------------- Herewith please find print of what can be done… | ||
| Scan139 | Balancing of a crankshaft and the scheme for balance weights. | ||
| View original record | HS. } FROM R. BY. } C. to SG. WOR. COPY. X7010. R7/M20.10.31. X634 X7010 X5010 BALANCING OF CRANK - 12/8 SCHEME OF BALANCE WEIGHTS. I cannot see any reason why it should not be easy to balance a… | ||
| Scan140 | Confirmation of instructions to proceed with scheme 1549 for Phantom II crankshaft balance weights. | ||
| View original record | E. Hs. Hs. /Rm. BY/Cgh BY/SS Y701D. BY.17/G. 2.11.31. PHAN. 11. CRANKSHAFT - BALANCE WEIGHTS. We wish to confirm our instructions over the telephone that WW. agree to us going ahead with Sch. 1549 for… | ||
| Scan141 | Requesting the packing of main bearings and a broken cap from 25-EX for inspection by 'R'. | ||
| View original record | RHC/H.Smith from Hs/Rm. X7010. Hs/Rm.2/AD3.11.31. MAIN BEARINGS - 25-EX. R. has expressed a desire to see the main bearings on 25-EX and the broken main bearing cap. At the conclusion, therefore, of… | ||
| Scan142 | Requesting the removal of sludge from specific crankpins for a test on oil lubrication. | ||
| View original record | RHC. from Hs/Rm. X7010. Hs/Rm.1/AD4.11.31. 25-EX CRANKSHAFT. With reference to the crankshaft on this car. We should like the sludge taken from Nos. 2 and 5 crankpins and let us have them back in the… | ||
| Scan143 | Recommending the use of Nitro Alloy for all future experimental crankshafts. | ||
| View original record | By. from Hs/Rm. c. RHC. X7010 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 10,000… | ||
| Scan144 | Decision on using a balance weight system for Phantom II (N.2 Series) crankshafts. | ||
| View original record | Hs. DY/CS. X7010. BY.2/G.29.12.31. PHANTOM 11. (N.2 SERIES). RE USE OF BALANCED CRANKSHAFT. ----------------------------------------- The Works are asking Order Office to release a further small… | ||
| Scan145 | Request for the weights of various crankshafts in different conditions. | ||
| View original record | Copy. X7010 RHC. from Hs/Rm. Hs/Rm.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… | ||
| Scan146 | Modifications to low inertia crankshaft dampers for the 20/25 and Phantom II models. | ||
| View original record | x7010. x634. x5010. BY. from E. c. Wor. Mx. HS. ----------------- E.1/HP.21.4.32. ----------------- re Low Inertia Crankshaft Dampers. --------------------------------- This is to confirm conference… | ||
| Scan147 | Inquiring about the availability of a second large journal crankshaft for testing on a 20-EX S.S.3 unit. | ||
| View original record | X7010 To RHC. From Hs/Rm. Hs/Rm.5/MJ.2.5.32. LARGE JOURNAL CRANKSHAFT. We understand that you have a second large journal crankshaft E.82572 with 2.8 jounnals available. If this is so, we should like… | ||
| Scan148 | Standardisation of the Nitro Hardened Crankshaft. | ||
| View original record | RR 755 (10H) (30405. 21-4-32) RM. 3/8382/4. COMPLETED 11.11.32. X7010. STANDARDISATION of CHASSIS PARTS. Date 17.8.32. Drawing 4439 7010 Part List Description of Parts. NITRO HARDENED CRANKSHAFT.… | ||
| Scan149 | Standardisation form for a new chassis part. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted........ 'O' Series. Date when chassis will be handed to test... 26th.Nov.1932. Cost of scrapped… | ||
| Scan150 | Standardisation document for a balanced crank to SCH.1549, detailing test reports, cost differences, and approvals. | ||
| View original record | RR 78B (10M) (19120. 12-10-31) BM. 3/7588. Handwritten top: GIRL. COMPLETED 16.1.33. x7010. STANDARDISATION of CHASSIS PARTS. Description of Parts: BALANCED CRANK TO SCH.1549. Origin: Improve bearing… | ||
| Scan151 | Costs and logistics of fitting a new part to an 'O' Series chassis. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS The number of the first chassis on which the new part will be fitted.......... 'O' Series. Date when chassis will be handed to test Nov. 26th. 1932. Cost of scrapped… | ||
| Scan152 | Crankshaft lubrication and solutions to bearing failures on the Phantom 10,000 miles car. | ||
| View original record | XX717? To E. from Hs/Rn. c. to By. c. to Rg. Hs/Rn.7/KT.24.6.33. CRANKSHAFT LUBRICATION ON NEXT PHANTOM 10,000 MILES CAR. We are proposing to use Kelmit bearings and a hardened shaft on the Phantom… | ||
| Scan153 | Proposed modification to crankshaft lubrication by increasing the number of journal holes. | ||
| View original record | COPY. X/7010 Hs. c. RHC. ---------------- BY.1/G.9.2.33. X4553 X4027 X5610 LUBRICATION OF CHASSIS CRANKSHAFTS. ------------------------------- I would suggest that before we put a modification through… | ||
| Scan154 | Instructions for a Phantom II crankshaft experiment, replacing part E.83796 with E.83811. | ||
| View original record | TO R.H.C. c. Hs/Rm. RECEIVED 8 MAR 1933 87010 BY/CSL/EH.7.3.33. Re Phantom II Crankshaft - Section 5010. HS Please receive herewith marked-up blue print of the following. E.83811 Crankshaft which… | ||
| Scan155 | 8-weight balance scheme for the Phantom II crankshaft. | ||
| View original record | To BY. from E/JNR. c. Wer. Hs. X7010 E/JNR.5/HP.1.5.33. Phantom 2 Crankshaft. We send you herewith: LeC.3471 showing the 8 weight scheme of balance weights for the crankshaft. The amount of balance is… | ||
| Scan156 | Improvement to the crankshaft oil cap studs for the Phantom II, Bentley, and 20/25 HP models. | ||
| View original record | To BY. from E/JNR. c. Hs, RHC. x7070 E/JNR.2/HP.30.5.33. Crankshaft Oil Cap Studs. We send you herewith: LeC.3515 showing an improvement to the front oil cap stud for Phantom 2, Bentley, and 20/25 HP.… | ||
| Scan157 | Requesting particulars about 40/50 HP engines used in tanks. | ||
| View original record | X7010 COPY. To Hs/GRY. from E. E.8/HP.23.8.33. re 40/50 HP. Engines in Tanks. X.7770. X.7010. Referring to the attached letter from Mr Bibby, of the 17th, I believe you have by you most of, if not… | ||
| Scan158 | Data on the latest type Phantom II engines with balanced crankshafts for 40/50 engines in tanks. | ||
| View original record | X 7010 COPY. E. from Hs/Gry. Hs/Gry.10/MA. 24.8.33. X.7770. X.7010. 40/50 ENGINES IN TANKS. replying to your E.8/HP.23.8.33., we send you the following data for the latest type P.II engines with… | ||
| Scan159 | Requesting further figures for a left-hand Phantom II engine crankshaft without balance weights for use in tanks. | ||
| View original record | COPY. X7010 Hs/GRY. from E/JNR. E/JNR.1/HP.28.8.33. 40/50 Engines in Tanks. X7770 We thank you for your Hs/Gry10/MA. 24.8.33. giving particulars of the Phantom 2 crankshaft, etc. It now appears that… | ||
| Scan160 | That balance weights be forged solid with the crankshaft. | ||
| View original record | To E. From Hs. c. to Wor. c. to By. c. to Sft. Y7010.. Hs.11/MJ.31.8.33. X 5010 X 217. BALANCE WEIGHTS. We suggest that in future production we might find it economical and certainly cause less… | ||
| Scan161 | Providing revised figures for the inertia and natural frequency of 40/50 engines intended for use in tanks. | ||
| View original record | COPY: X7010 To E. from Hs/Gry. Hs/Gry.1/KT.1.9.33. 40/50 ENGINES IN TANKS. X.7770; X.7010. Replying to your E/JNR.1/HP.28.8.33. saying that left hand engines will be used in the tanks, we send you the… | ||
| Scan162 | Balance weight failures on a Bentley engine and the challenges of making them solid with the crankshaft. | ||
| View original record | To Hs. from E. COPY. 7070 c. Wor. By. Sft. E.4/HP.1.9.33. x 5070 x 217 Balance Weights. Referring to your memo Hs.11/W.31.8.33. I am generally in agreement with your suggestion to make balance weights… | ||
| Scan163 | Crankshaft drawings and balance weights for Phantom, Bentley, and 20/25 HP models. | ||
| View original record | X7010 To BY. from E/JNR. E/JNR.4/MP.19.3.34. c.c. Wor. Hs. RHO. re Crankshafts. We send you herewith drawing LeC.3817 shewing the Phantom crankshaft with the balance weights formed integral with the… | ||
| Scan164 | Standardisation of parts for a modification to balance weight studs. | ||
| View original record | RR 788 (SH) (SZ674. 16-10-33) BM. 3/262/6. COMPLETED 11.7.34. 40/50 STANDARDISATION OF PARTS. Description of Parts. MODIFICATION TO BALANCE WEIGHT STUDS. Origin. To prevent failure of fixing and to… | ||
| Scan165 | The standardisation of parts, specifically a modification to a balance weight, including cost estimates. | ||
| View original record | STANDARDISATION OF PARTS. MODIFICATION TO BALANCE WEIGHT OTO? No. X Drawing No. Part No. Est. cost of extra jigs, tools and equipment (Sft/Ws.5.6.34) £23.0.0. This part is already instructed for 'S'… | ||