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).
Decision to revert to pinned valve tappets for the 40/50 HP chassis due to noise issues.
| Identifier | Morton\M22\ img058 | |
| Date | 1st November 1919 | |
| TO DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to L.J. " " BN.{W.O. Bentley / Mr Barrington} [struck through] " " JHH [struck through] " " AJW [struck through] " " CW. [struck through] " " EFC. ORIGINAL 1EX DA{Bernard Day - Chassis Design}2/G20/11/19. (2) X.3733. RE PINNED VALVE TAPPETS. 40/50 H.P. CHASSIS. We send you herewith drawing No. LeC.1160, shewing the above, in consequence of slight noise due to the tappets, and the fine clearance that is necessary, Mr. Royce thinks it is advisable to go back to pinned tappets. He remarks that we cancelled pinning for the sake of simplicity. Would you please arrange to fit these to chassis 1EX. before it is returned to West WitteringHenry Royce's home town. E.{Mr Elliott - Chief Engineer} | ||