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).
Diagram illustrating the engagement mechanism of a spring-loaded pinion with a flywheel gear.
| Identifier | ExFiles\Box 61b\3\ scan0099 | |
| Date | 14th May 1929 guessed | |
| Flywheel gear. About 1 3/4" This gear has cork faced spring loaded driving surface with slip if any excessive shock. On colliding with flywheel gear this pinion can slide back until gears mesh. | ||