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).
Modification to the 40/50 HP starter motors by using coarser field copper for increased engine speed.
| Identifier | ExFiles\Box 49\5\ Scan077 | |
| Date | 12th July 1921 | |
| To EFC. {E. Fowler Clarke - Electrical Engineer} from R. {Sir Henry Royce} c. to CJ. X4276 R10/G12.7.21. X.3082. RE 40/50 H.P. STARTER MOTORS X.4276. I consider that all starter motors for the 40/50 HP. should be wound with coarser field copper, so that the motor runs faster, takes more battery current, and turns the engine faster. We have arranged that they shall do this on the American made chassis with the improved Bijur motor. Kindly get an experimental one fitted for, say, 25% increase. R. {Sir Henry Royce} | ||