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).
Technical letter discussing clutch movement ratios and stiffness.
| Identifier | ExFiles\Box 130\3\ scan0142 | |
| Date | 3rd December 1940 | |
| Rm{William Robotham - Chief Engineer}/GB.1/AT.3.12.40 - 2 - The relationship between the throwout race movement and pedal movement is 1 to 11.8. We would prefer the race movement not to exceed .230 ------ = .021" 11.8 If you could remove the period and increase the clutch stiffness by 20% we would feel happy. We shall be writing you on tank clutches shortly, Yours faithfully, | ||