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).
Modifications to the P.2. S.M. gearbox 2nd speed sleeve to reduce friction.
| Identifier | ExFiles\Box 15\5\ Scan400 | |
| Date | 23th July 1934 | |
| Y7310 To DY.{F R Danby} from HDY.{William Hardy} ------------------- C.c. Mr H.S. Mr E.W.R. ------------------- HDY.{William Hardy}2/HP.23.7.34. ------------------- P.2. S.M. Gearbox. ------------------- N. Sch. 4143 herewith shows modifications to the 2nd speed S.M. sleeve intended to reduce friction by the elimination of any possibility of cross winding of the outer actuating ring. HDY.{William Hardy} | ||