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 a reduction gear to LOP E.35711, with new strengthened casings, a driving shaft with tighter serrations, and hardened roller races with reduced clearances.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan162 | |
| Date | 30th June 1930 | |
| R.R. 756 (10H) (D.G. 114. 8-5-29). J.H., LTD. ORIGINAL - COMPLETED 22.1.31. STANDARDISATION OF AERO ENGINE PARTS Date 30.6.30. Description of Parts. REDUCTION GEAR TO LOP. E.35711. New strengthened type front and rear casings to E34752/3 in T.50 Alloy - Driving shaft having tighter fitting serrations and hardened Roller races with reduced clearances. X No. 4526. Drawing No. Part List Origin. To prevent gear noise. Experimental Test Report. This gear was incorporated on last Type Test. On completion of 100 hrs. :- The cases were found to be in a very good condition also the spur and pinion wheels. The shaft was in good condition with the exception of fretting of thrust race. (It might be noted that Type Test was run on P.4 oil.) [STAMPED TEXT: ENGINE] Weight of old part. Cost of old part. £ 16: 1s. 6 d.{John DeLooze - Company Secretary} Weight of new part Cost of new part. £ 18: 8s. 0 d.{John DeLooze - Company Secretary} Difference per engine. Increase of - Difference per engine. £ 2. 6 s. 6 d.{John DeLooze - Company Secretary} Signature that above is correct. G/Rb.{R. Bowen}17.1.31. G.20.1.31. Wor.{Arthur Wormald - General Works Manager} Air Ministry consent obtained. INITIAL. | DATE. | REMARKS. SG.{Arthur F. Sidgreaves - MD} | 20.1.31 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 9/7/30 | Agreed R.{Sir Henry Royce} WOR.{Arthur Wormald - General Works Manager} | 1.7.30 | Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 1.7.30 | Agreed Rg.{Mr Rowledge} FL. | 4.7.30 | Agreed Fl. BY | 2.7.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 1.7.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} - Serrations to be lapped and slightly barrelled?. E.{Mr Elliott - Chief Engineer} | 5.7.30 | Agreed AE. Hs.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} | ||