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).
The motor's main series winding, resistance, and progress on the dynamo and starter motor for the 40/50 model.
| Identifier | ExFiles\Box 64\1\ scan0139 | |
| Date | 4th June 1923 | |
| Contd. -3- R4/M4.6.23. Regarding the main series winding of the motor we should make this pro rata in current carrying capacity with the armature. We should not add any resistance to absorb volts intentionally but would prefer to put the copper in the coils and let the motor turn the engine faster. We think the point of view of making these fields of purposely higher resistance than is necessary would be wrong except in the case of the teazer circuit. We now appear to be making good progress with the 40/50 RR. dynamo and also the smaller starter motor for the 40/50. R.{Sir Henry Royce} | ||