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 and the effect of series winding excited by headlamp current.
| Identifier | WestWitteringFiles\W\September1931-November1931\ Scan005 | |
| Date | 1st September 1931 | |
| 40/50 AT CONSTANT OPERATING VOLTAGE OF 14.0. AMPERE OUTPUT OUTPUT SPEED CURVES SHOWING EFFECT OF SERIES WINDING EXCITED BY HEAD LAMP CURRENT 1. WITHOUT SERIES WINDING 2. WITH SERIES WINDING SUPPLIED THROUGH 36 WATT LAMPS 3. " " " " " 60 " " DOTTED CURVE SHOWS OUTPUT OF STD MACHINE UNDER CONDITIONS SIMILAR TO THOSE OF CURVE 3. DYNAMO R.P.M. PII CHASSIS M.P.H. WITH 11/41 AXLE & 33.0" TYRE DIA. C.A.P. 1-9-31 | ||