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).
Photograph showing the wear on a flywheel's gear teeth after 25,000 starts.
| Identifier | ExFiles\Box 165\7\ img034 | |
| Date | 20th January 1950 guessed | |
| RR FLYWHEEL AFTER 25000 STARTS | ||