From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Standardisation of parts relating to the rear axle pinion Acme thread clearance, increasing it from .010 to .012.
| Identifier | ExFiles\Box 84\4\ scan0283 | |
| Date | 5th July 1937 | |
| RR 755B (10H) 26074 2-11-36 WHK 24999 COMPLETED 7.9.37. BENTLEY STANDARDISATION of PARTS. Date 5.7.37. X No. 202. Drawing No. Description of Parts: REAR AXLE PINION ACME THREAD CLEARANCE INCREASED TO AN ANNULAR AMOUNT OF .010 to .012. Origin: To prevent damage of oil thread due to fouling when running on 1st. speed. Report of Experimental Test.: Tried on 6 production chassis and overcomes the trouble. No oil leaks experienced. Cost of Old Part Cost of New Part Nett Increase/Decrease No Difference Signature from Cost Dept. that above is correct. G/RL INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 6-9-37. | Agreed Sg.{Arthur F. Sidgreaves - MD} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} C. | 24.8.37. | Agreed C. E.{Mr Elliott - Chief Engineer} | | DA.{Bernard Day - Chassis Design} | 26.8.37. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 25.8.37. | Agreed By.{R.W. Bailey - Chief Engineer} KRX | | SFT.{Mr Swift} RHC.{R. H. Coverley - Production Engineer} | 25.8.37. | Agreed RHC.{R. H. Coverley - Production Engineer} MX.{John H Maddocks - Chief Proving Officer} | 30.8.37. | Agreed Mx.{John H Maddocks - Chief Proving Officer} RM.{William Robotham - Chief Engineer} | 23.8.37. | Agreed Rm.{William Robotham - Chief Engineer} STAMP: J.S. 3 SEP 1937 | ||