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).
Method adopted to overcome piston knocks on post-war cars.
| Identifier | ExFiles\Box 48\1\ Scan136 | |
| Date | 2nd February 1921 | |
| W.R. 286a (100 T) (S.H. 798, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2347 X.4190 To Wor.{Arthur Wormald - General Works Manager} from Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}2/LG25. 2. 21. X4190 PISTON KNOCKS ON POST-WAR CARS. With reference to the attached report from Cricklewood. The method they explain for overcoming piston knocks on post-war Cars has been adopted at the works from the introduction of these pistons. We understood that all outside Depots were instructed by the Test Department as to this method of over-coming these piston knocks. We explained the procedure to Mr. Royce and he raised no objection. Hs.{Lord Ernest Hives - Chair} | ||