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).
Valve springs breaking on the 40/50 chassis and a proposal to use a more reliable double spring design from the aero engine.
| Identifier | ExFiles\Box 41\1\ Scan079 | |
| Date | 24th November 1919 | |
| BN.{W.O. Bentley / Mr Barrington} from EH. c. to D.{John DeLooze - Company Secretary} X3777. EHS/LG24.11.19. X.3777. VALVE SPRINGS ON 40/50 CHASSIS. We have had a fair number of Valve Springs break on the 40/50 chassis. We consider that the valve springs we are using on the aero engine are more reliable than those we are at present using on the Car engine. We consider it would be a wise plan to get out some double valve springs suitable for the car engine and made similar to what we use on the aero engine. EH. | ||