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).
Graph of dynamo output speed curves for the Phantom II chassis.
| Identifier | ExFiles\Box 62\3\ scan0238 | |
| Date | 1st July 1931 | |
| 40/50 AMPERE OUTPUT. AT CONSTANT OPERATING VOLTAGE OF 14.0. DYNAMO OUTPUT SPEED CURVES 1. WITH STANDARD FIELD WINDING 58°C SETTING 2. WITH FINER FIELD WINDING 58°C SETTING THE DOTTED CURVE SHOWS THE OUTPUT OF THE MACHINE FITTED TO THE FIRST PHANTOM II CARS. DYNAMO R.P.M. P.II CHASSIS M.P.H. WITH 11/41 AXLE & 33.0" TYRE DIA: C.A.P. 1.7.31 | ||