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).
Performance of starter motor commutators with improved dimensions and materials.
| Identifier | ExFiles\Box 50\5\ Scan098 | |
| Date | 15th July 1922 | |
| Contd. -2- R1/M15.7.22. process if we embodied the improved dimensions and materials because we have not known any of these commutators to fail, and we assume that the duty is so short that there is no serious rise of temperature in a starter motor, which is in reasonably good condition and a fair efficiency. R. {Sir Henry Royce} | ||