Summary of development work on engine cam forms and followers, noting the performance gains were not worth the risk of valve spring failure.
| Identifier | ExFiles\Box 155\1\ scan0155 | |
| Date | 30th July 1934 guessed | |
| -2- Attached are various curves shewing development work carried out on this engine. Actually it will be seen that with R. {Sir Henry Royce} engine cam forms and .750 radius followers there is a gain of about 2% in intermediate M.E.P. and 5% in top ower, but it was not thought to be worth risking valve spring failure for such a small gain. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} For curves see File 7962. | ||
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).