Letter to S. Sparrow of Studebaker Corporation regarding the conclusion that excessive valve temperature is due to high-speed detonation.
| Identifier | ExFiles\Box 174\2\ img295 | |
| Date | 23th December 1938 | |
| RM {William Robotham - Chief Engineer} 3/R. 23.12.38. S. Sparrow, Esq., Studebaker Corporation, South Bend, IndiaProduction 20 HP. with 4-speed box and Front Wheel Brakesna {Mr Nadin} , U.S.A. Dear Sparrow, It is exceedingly good of you to answer my questions so fully. I am very much indebted to you for the trouble you have taken. We have now come to the conclusion that our excessive valve temperature is due to high speed detonation, and we shall not alter it until this has been eliminated. Yours sincerely, | ||
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).