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 detonation using french petrol, pre-ignition and misfires.
| Identifier | ExFiles\Box 13\3\ 03-page005 | |
| Date | 29th December 1927 | |
| Hs.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} from R.{Sir Henry Royce} c. to B.J. Wor.{Arthur Wormald - General Works Manager} +7080 R4/M29.12.27. EAC.7 - ALUM: ENGINE, TURBULENT HIGH COMP: 5/1, RUBBER SUSPENSION. X.7770 X.7005 X.7080 So far good, but with french petrol it detonates at slow speed, our carburetter being so good as to always give correct mixture. At the moment the engine has pre-ignitions with both ignitions on, and misfires with either singly at about 10 m.p.h. I believe it is mutual induction for the former, and oxidised plugs causing the latter. R.{Sir Henry Royce} | ||