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 dynamo output curves showing the effect of increasing armature slot size.
| Identifier | ExFiles\Box 61b\1\ scan0234 | |
| Date | 1st December 1930 | |
| 40/50 AMPERE OUTPUT AT CONSTANT OPERATING VOLTAGE OF 14.0 OUTPUT CURVES WITH STANDARD CARCASE SHOWING EFFECT OF INCREASING SIZE OF ARMATURE SLOTS BUT KEEPING NUMBER OF CONDUCTORS CONSTANT. 1. ARMATURE WITH .160" TOOTH AND 18 S.W.G. WIRE 58°C SETTING. 2. ARMATURE WITH .120" TOOTH AND 17 S.W.G. WIRE 3. ARMATURE WITH .085" TOOTH AND 17 S.W.G. WIRE DYNAMO R.P.M PII CHASSIS M.P.H. WITH 11/41 AXLE & 33.0 TYRE DIA: CAP/28.8.31 1-12-30 | ||