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).
Letter from Maurice Olley regarding gearbox noise and suggestions for gear helices.
Identifier | ExFiles\Box 137\5\ scan0092 | |
Date | 1st September 1929 guessed | |
- 2 - Altogether it is rather wonderful that the 2nd speed is as quiet as it is having only a thin whine on drive and not too much noise on overrun. I would suggest that if Coverley makes up a similar box and gets his gear helices running true and the driven gear free endways, you should get rather wonderful results. Apparently you were very wise to use standard single-helical side shaft gears. Very truly, Maurice Olley Maurice Olley M Encl: 1 | ||