Improvement to Phantom Cylinders to reduce engine knock.
| Identifier | ExFiles\Box 65\4\ scan0361 | |
| Date | 17th January 1927 | |
| X.8050 Hs {Lord Ernest Hives - Chair} RECEIVED JAN 19 1927 From Mr. Hs {Lord Ernest Hives - Chair} 6/M18.1.27 re Phantom Cylinders. Hs {Lord Ernest Hives - Chair} 6/D17.1.27. The thickened cylinder projection effected a 75% to 80% improvement on engines suffering from this particular knock which this modification was introduced to overcome, making the knock inaudible except when "listening in". I have at the moment one engine on test that is giving trouble in this respect, but this is the only case I know of, and it is now being investigated. Mr. | ||
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).