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).
Confirming a modified armature winding diagram for a dynamo fitted to an S.S. chassis.
| Identifier | ExFiles\Box 60\1\ Scan107 | |
| Date | 24th April 1929 | |
| X7660 To BY/RD. from EFC. EFC1/LG24.4.29. We are now able to say that the modified armature winding diagram D.{John DeLooze - Company Secretary} 71998 is correct for the inverted type of dynamo to be fitted to S.S. chassis giving, as it does, the required angle of retard of the main brushes of 90°. Also the angle between the positive main brushes and the control brushes is to remain at 122°. EFC/CAP. | ||