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).
Cross-section drawing of an overdrive gear assembly.
| Identifier | ExFiles\Box 136\2\ scan0093 | |
| Date | 5th August 1939 | |
| OVERDRIVE GEARS LTD., LONDON, ENGLAND., 5-8-39., 35x72x17, 50x90x20, 30x72x19 | ||