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).
Report comparing gearbox performance, ease of use, and noise levels with competitor vehicles.
| Identifier | ExFiles\Box 6\4\ 04-page233 | |
| Date | 15th January 1930 | |
| Da{Bernard Day - Chassis Design}/Hdy{William Hardy}1/15.1.30 contd. -2- than one gear was appreciably increased. Shunting the car took less time. The so called easychange on Graham-Page and Chrysler cars works without much shock that is apparent, but we know that it must be severe in the transmission. The general opinion was that first speed on Phantom was never required except when the car was starting from rest on a gradient, and so if necessary/could be less it easy of access than the other forward speeds. 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-Page and Chrysler) as good for silence as it is now made it does not deteriorate in the life of an American car. Da{Bernard Day - Chassis Design}/Hdy.{William Hardy} | ||