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).
Test results for the power required to operate a Lucas E.575 dynamo.
| Identifier | ExFiles\Box 36\4\ scan 245 | |
| Date | 11th November 1921 | |
| X.3014b To By/HEB.{H. Biraben} from EFC, EFC3/T11.11.21. X.3014b - LUCAS E.575 DYNAMO - POWER REQUIRED TO OPERATE. We have made a test on the amount of power required to drive the standard Lucas dynamo. This works out at .72 H.P. at the speed of 680 r.p.m., this speed corresponding to maximum ampere output, and .89 H.P. at 2445 r.p.m. which is a higher speed at which the ampere output is somewhat reduced by control. EFC. | ||