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).
Continuation page detailing calculations for coil pitch and commutator connections.
| Identifier | ExFiles\Box 165\6\ img057 | |
| Date | 31th January 1927 guessed | |
| -2- Contd. two coils per slot, the coils would not be in the correct positions in relation to the slots. Hence pitch must be 25 on coils and 29 on the commutator connections, or, 1 + 25 -> 26 + 29 -> 55 + 25 -> 80 + 29 -> 109 the lap coil which is afterwards inserted being excluded in this numbering. EFC/CAP. | ||