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).
Extract from a letter detailing the decision to switch to using bakelite pinions in magnetos to reduce noise.
| Identifier | ExFiles\Box 48\2\ Scan372 | |
| Date | 23th March 1928 | |
| X8796 Extract from Messrs. North's letter of 23.3.28. (X.7791) We have made large numbers of magnetos with steel pinions and bakelite gears but found such magnetos definitely noisier than those in which both the gear wheel and pinion are in bakelite. The difference was so marked that we are now using bakelite pinions on all our magnetos. | ||