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 showing the output speed curves of a dynamo, with and without series field winding.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan044 | |
| Date | 1st June 1931 | |
| AMPERE OUTPUT AT CONSTANT OPERATING VOLTAGE OF 14.0 OUTPUT SPEED CURVES OF DYNAMO. 1. WITHOUT SERIES FIELD WINDING. 2. WITH SERIES FIELD WINDING. DYNAMO R.P.M PH. II CHASSIS M.P.H. WITH ¹¹/₄₁ AXLE & 33.0" TYRE DIA: 40/50 C.A.P. 1.6.31. | ||