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 output speed curves showing the effect of series winding excited by headlamp current.
| Identifier | WestWitteringFiles\W\September1931-November1931\ Scan007 | |
| Date | 2nd September 1931 | |
| AMPERE OUTPUT AT CONSTANT OPERATING VOLTAGE OF 14.0 OUTPUT SPEED CURVES. SHOWING EFFECT ON STANDARD MACHINE OF SERIES WINDING EXCITED BY HEADLAMP CURRENT. A.{Mr Adams} WITHOUT SERIES WINDING B. WITH SERIES WINDING SUPPLIED THROUGH 36 WATT LAMPS C. WITH SERIES WINDING SUPPLIED THROUGH 60 WATT LAMPS 58 C° SETTING DYNAMO R.P.M. P.II CHASSIS M.P.H. WITH 11/41 AXLE & 33.0" TYRE DIA: C.A.P 2-9-31 40/50 | ||