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).
Field pole coil size for a starter motor.
| Identifier | ExFiles\Box 64\1\ scan0198 | |
| Date | 1st January 1925 | |
| C. EFC. X/620 BY/RD2/ML15. 1. 25. X.8620 - E.A.C.11 - STARTER MOTOR. Referring to EFC1/T14. 1. 25, suggesting that the reduced size field pole coil should be fitted to the motor you are supplying to EFC., will you please note that EFC. has agreed to my suggestion to have this motor tested with the poles as instructed and not with the reduced size because if we had the reduced size it would mean delay in having to re-wind the field coils. and Also with the reduced field pole we propose to retain the area of the main winding and alter the section owing to the difficulty in assembling the coils with the larger size teaser winding. BY/RD. | ||