Recommending fitting flush top pistons to a 7:1 C/R head to reduce detonation.
| Identifier | ExFiles\Box 148\1\ scan0203 | |
| Date | 6th November 1939 | |
| 1256 To Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} from Rm. {William Robotham - Chief Engineer} Rm. {William Robotham - Chief Engineer} 3/MH. {M. Huckerby} 6.11.39. Before you finish with the 7 : 1 C/R head you should try a set of flush top pistons (if these are not already fitted) as these reduce detonation. Rm. {William Robotham - Chief Engineer} | ||
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).