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).
Note on the record mileage achieved by a 3 1/2 Litre Bentley axle shaft before failure, with a theory on the cause of breakages.

Identifier  ExFiles\Box 111\2\  scan0436
Date  12th January 1941 guessed
  
- 3 -

Continued :

It is also of interest that my own 3½ Litre Bentley B-69-EJ completed 72 thousand miles of driving with the original type of Bentley axle shaft before failure occurred and I think that this is the record for this type of shaft and that it substantiates my theory that many of the breakages were due to sheer ham-handed driving.

BY.{R.W. Bailey - Chief Engineer}
  
  


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