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).
To Mr Johnson detailing the relative speeds obtained with worm and bevel drive axles.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page148 | |
| Date | 9th January 1912 | |
| R.R. 1912 (cont) (X pr.{Percy H. Rose} sheet C) eng. X141 Re relative speeds obtained with worm and bevel drive axles. Mr Johnson 9/1/12 THB12/L9112. You ask with reference to the 98th meeting :- "What are the relative speeds obtained on the direct drive with our present design of worm axle and the standard bevel gear." They are as follows :- Standard bevel axle (65/22) 32.8 m.p.h. at 1,000 r.p.m. Present design of worm axle, ratio 3.6 to 1, 26.7 m.p.h. at 1,000 r.p.m. | ||