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).
Clutch spinning and acceleration performance tests.
| Identifier | ExFiles\Box 29\3\ Scan130 | |
| Date | 1st August 1925 guessed | |
| Clutch spinning and acceleration. It was found that though in accelerating from 10 - 35 m.p.h. on 3rd. speed, the time taken was 3 secs. less than on direct drive, in accelerating from 10 - 60 m.p.h. using 3rd. speed and top, the gain was only 1 2/5 secs. due to the slow gear change necessary losing a considerable amount of time. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} MADE AT CROWLEY | ||