Rolls-Royce Archives
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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 ampere output curves against RPM, showing the effect of different armature slot sizes for a PII chassis.

Identifier  WestWitteringFiles\W\May1931-August1931\  Scan111
Date  1st December 1930
  
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. " .120" " " 17 S.W.G. "
3. " .085" " " " "
DYNAMO R.P.M.
PII CHASSIS M.P.H. WITH 1/41 AXLE & 33.0 TYRE DIA.
40/50
C.A.P. 25-8-31
  
  


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