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 comparing the deflection vs load characteristics of a standard and a lightened 25 HP clutch.

Identifier  ExFiles\Box 137\4\  scan0169
Date  13th January 1931 guessed
  
LOST MOVEMENT 25 HP CLUTCH
ANGULAR MOVEMENT OF CLUTCH OPERATING SHAFT WITH CLUTCH SPRINGS CHOC O' BLOCK
STANDARD 25 HP CLUTCH
G.33692
LIGHTENED CLUTCH
ALUMINIUM BACK PLATE
STIFFENED & STIFFER FINGERS
G.34385
Y-AXIS: DEFLECTION IN 1/1000 AT 8.82" RAD
X-AXIS: LOAD IN LBS. AT 3.2" RAD.
TO CONVERT TO LBS. PEDAL PRESSURE MULTIPLY BY .108
  
  


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