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 to Gleason Works discussing ring gear and pinion specifications for a 12-cylinder axle.
| Identifier | ExFiles\Box 111\4\ scan0075 | |
| Date | 4th October 1938 | |
| Gleason Works. -2- 4th. October 1938. We cannot agree that a 9 1/2" ring gear is necessary, or our 12 cylinder axle would not function. We should like to have your views on whether more teeth in the pinion would be an improvement, i.e. 10/46 instead of 8/37. Is it true that Buicks are using a spiral angle of 42° this year ? We will send you an axle for deflection tests as soon as one is available, but it is more rigid than its forerunner. Yours faithfully, for ROLLS-ROYCE LTD. Attached print OB.619. | ||