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).
Performance graph showing output requirements for a 40/50 HP S.S. Dynamo, plotting Amperes and Volts against RPM and MPH.
| Identifier | ExFiles\Box 60\1\ Scan213 | |
| Date | 4th July 1940 | |
| AMPERE OUTPUT OPERATING VOLTAGES DYNAMO R.P.M. S.S. CHASSIS M.P.H. WITH 11/41 AXLE & 33.0" TYRE DIA. SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 40/50 HP S.S. DYNAMO. 40/50. LUTON - Bleakley Dynamo Curves I. Normal condition (for medium output) II. 3rd brush lead & half curve modification (for high output) III. As II with insertion field resistance (for half output) EE.D/ 4.VII.40 | ||