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).
Gearbox noise and comparisons with Armstrong-Siddeley, Graham-Paige, and Chrysler vehicles.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan013 | |
| Date | 20th January 1930 guessed | |
| (2) SILENCE. No complaints are made at present by customers about the noise made by our gearboxes. HS.{Lord Ernest Hives - Chair} remarked that the best of our gears were quiet enough to be considered almost inaudible, and that this exceptional quietness was maintained. CX.{Major Len W. Cox - Advertising Manager} thought that an Armstrong-Siddeley car with the Wilson box that he had tried was not particularly quiet on the gears. The Wilson box HS.{Lord Ernest Hives - Chair} tried was much quieter than an ordinary box as made by Armstrong-Siddeley would have been, but the general noisiness of the car prevented accurate comparison with our gears. HS.{Lord Ernest Hives - Chair} regards the internal mesh gear (Graham-Paige and Chrysler) as good for silence and as it is now made it does not deteriorate in the life of an American car. DA{Bernard Day - Chassis Design}/HDY.{William Hardy} | ||