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).
Armature diameter for a motor, suggesting it should be the same as a 20 HP motor.
| Identifier | ExFiles\Box 64\2\ scan0064 | |
| Date | 26th May 1927 guessed | |
| -2- Contd. Therefore it appears to us that our armature diameter for this motor should be about the same as that for the 20 HP., viz. 2.850, giving a ratio of .57 , which suggests that a 20 HP. armature might be tried in the sequence motor carcase. EFC. | ||