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).
Blueprint graph showing Dynamo Output Speed Curves for different field windings related to the Phantom II.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan078 | |
| Date | 1st July 1931 | |
| AMPERE OUTPUT. AT CONSTANT OPERATING VOLTAGE OF 14.0. 40/50 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 | ||