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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).
Examination of a 3 1/2 Litre Bentley slipper drive, concluding the engine was over-revved.

Identifier  ExFiles\Box 85\5\  scan0041
Date  3rd August 1933
  
To Mr. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
C. E.{Mr Elliott - Chief Engineer} By.{R.W. Bailey - Chief Engineer}
C. Wor.{Arthur Wormald - General Works Manager}

X249-

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}16/KT.3.8.33.

3 1/2 LITRE BENTLEY - SLIPPER DRIVE.

We have carefully examined this slipper drive and we are positive that the engine to which this was fitted has been, probably inadvertently, run up on to the master crankshaft period. The red mark on the rev. counter should prevent this ever happening on cars in the hands of a customer.

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


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