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).
Page 2 of a letter from E.C. Dodds describing an engine knocking sound that disappears when hot.
| Identifier | ExFiles\Box 90\2\ scan0160 | |
| Date | 9th June 1937 guessed | |
| -2- curious fact is that when the engine gets really hot the knocking passes off. It all sounds very strange, but I can assure you that it is true. With kind regards, Yours sincerely, (Sgd.) E.C. Dodds. | ||