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 showing the effect of brush position on the output of a Smith Type A Dynamo.

Identifier  ExFiles\Box 3\5\  05-page251
Date  11th June 1920
  
OUTPUT Amperes
BRUSHES FULLY FORWARD
15.40
BRUSHES NORMAL
15.40 VOLTS
BRUSHES FULLY BACK
C=14.4 VOLTS
EFFECT
OF
VARIATION
OF
BRUSH POSITION
ON
OUTPUT
OF
SMITH TYPE A DYNAMO
DYNAMO SPEED (R.P.M.)
590 R.P.M
15.6 VOLTS
15.0
14.5
14.0
  
  


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