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).
Proposing modifications to the Bentley Rockers valve gear to reduce cost.
| Identifier | ExFiles\Box 88\4\ scan0199 | |
| Date | 4th February 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} BENTLEY ROCKERS. In order to try and cheapen the valve gear will you please make for trial a set of rockers and rocker shaft as follows ;- (1) Rocker shaft with copper deposited surface, otherwise standard. (2) Bore the rockers so as to give standard clearance on the shaft, thus deleting the existing bronze bushes which are expensive. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||