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).
Performance graph comparing the ampere output of various dynamos at different speeds and temperatures.

Identifier  ExFiles\Box 36\4\  scan 163
Date  11th November 1938
  
X3014h
AMPERE OUTPUT
DYNAMO SPEED (R.P.M.)
LUCAS E 575 (HOT) AVERAGE OF THREE
SMITH 2D (HOT) (AVERAGE OF THREE)
SPECIFIED PERFORMANCE (HOT)
ROTAX COLD
ROTAX FULLY HOT
ROTAX FIELD CURRENTS
ROTAX AT12 dynamo cold and fully hot output curves with curve of specified hot performance of dynamo for RR car, also average performance curves (hot) of LUCAS E575 and Smith 2D dynamos.
340 440 S.A. R.P.M.
12.4 13.1 13.5 VOLTS
770 R.P.M 13.5 VOLTS
7 CURVES &
CURVES READ FROM
CHART No M112
E.J.B.
Data points on curves: 14.6, 14.0, 11.5, 14.85, 14.3, 14.6, 13.6, 14.35, 14.6, 14.15, 14.55, 14.1, 13.2, 13.4, 14.1
  
  


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