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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).
Blueprint diagram illustrating wear on a Borg and Beck clutch after a 17,000-mile road test in France.

Identifier  ExFiles\Box 83\1\  scan0285
Date  17th November 1936
  
6BN{W.O. Bentley / Mr Barrington}
GROOVES ON THESE TWO LUGS WORN BY COVER.
.015 DEEP
.022 DEEP
DISTORTED .004" ON FACE BETWEEN THESE TWO POINTS.
POSITION OF GROOVE WORN ON LUG
NO WEAR ON THESE TWO LUGS
DISTORTED .006 ON FACE BETWEEN THESE TWO POINTS
.018
WEAR ON TWO SLOTS IN COVER CORRESPONDING TO TWO WORN LUGS ON PRESSURE PLATE.
WEAR ON BORG AND BECK CLUTCH AFTER 17,000 MILES TEST IN FRANCE
ROLLS-ROYCE, LTD.
NOV 17 1936
DERBY.
Ex I 68
  
  


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