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 loss of pedal movement due to brake shoe heating for standard aluminum versus cast iron shoes on a 20/25 model.

Identifier  ExFiles\Box 13\1\  01-page17
Date  9th June 1932 guessed
  
LOSS OF BRAKE CLCE DUE TO HEATING OF BRAKE SHOES
REAR BRAKES 20/25-
STD ALUMINUM SHOES
CAST IRON SHOES
LOSS OF PEDAL MOVT INS
NO OF BRAKE APPLICATIONS AT INTERVALS REDUCING CAR SPEED
FROM 50-20 M.P.H.
  
  


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