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).
And a diagram discussing S.U. carburettor piston damping and snap opening improvements.
| Identifier | ExFiles\Box 173\1\ img028 | |
| Date | 5th January 1934 guessed | |
| power drops appreciably. Make tests with smallest permissible pipe and these carbs to see if snap opening is improved. 2. S.U. Piston Damping. From past experience one would say that damping the S.U. piston movement would give us exactly the momentary richening up that we require. S.U.'s never seem to have done this seriously one way. An adaptor dashpot stuck on the top of the ordinary S.U. should not be difficult to make. Presumably it should act when the piston is rising only. Skinner ought to come over because, with a decent consumption, we have always been weak on snap opening etc. Universal | ||