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).
Query about the number of turns on a starter motor's field poles.
| Identifier | ExFiles\Box 64\1\ scan0259 | |
| Date | 6th December 1926 | |
| X8620 To EFC. BY/RD5/ML6.12.26. RE E.A.C.7 - STARTER MOTOR. Referring to your verbal query why the motor had 6½ turns on the field poles instead of 4½, we would refer you to your memo - EFC3/T20.10.23 and LeC.1770, also EFC5/T1 5.9.24. BY/RD. RECEIVED DEC 8 1926 | ||