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).
Specifications and settings for a PFR.II clutch plate.

Identifier  ExFiles\Box 169\4\  img183
Date  19th January 1933
  
3. PFR.II. CLUTCH PLATE.

Damping set to 33 ft. lbs.

88 lbs. required to give maximum movement.

spring pressure therefore 55 lbs.
  
  


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