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).
Improved function of a 55° angle thread Bendix pinion on an EAC starter motor.
| Identifier | ExFiles\Box 64\1\ scan0195 | |
| Date | 13th November 1924 | |
| To EFC from RHC.{R. H. Coverley - Production Engineer} x 7620 RHC{R. H. Coverley - Production Engineer}1/EU 13. 11. 24. RE EAC STARTER MOTOR. We have now fitted to the starter motor on 93 NK the Bendix pinion with the 55° angle thread in place of the 45°, and in our opinion this functions much better. We shall be glad to have your instructions as to what you consider should be fitted to future starter motors. RHC.{R. H. Coverley - Production Engineer} | ||