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 the average control brush angle for D.SCH.529 dynamos.
| Identifier | ExFiles\Box 163\6\ img246 | |
| Date | 24th November 1932 | |
| X6016 RV/RD. from Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.3/AD24.11.32. CONTROL BRUSH ANGLE FOR D.SCH.529 DYNAMOS Confirming our verbal message to you we have found the angle of these control brushes to be on the average 123°. Hs{Lord Ernest Hives - Chair}/Wst. | ||