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).
Engine chirping or pinking in relation to an instruction book.
| Identifier | ExFiles\Box 26\2\ Scan028 | |
| Date | 17th January 1914 | |
| Wor{Arthur Wormald - General Works Manager}/SM8/L17114. Re Instruction Book. Na{Mr Nadin}/S. 17-1-14. In reply to your memo Na{Mr Nadin}/S14/LG9114, Mr Hives reports :- "I do not think we can say that the "chirping or pinking can be avoided by firing "in the intermediate position. It is "considerably less but it is still there. "It means that the engine will run a longer "time before it is necessary to clean it." p. Wor.{Arthur Wormald - General Works Manager} | ||