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).
Page 2 of a report detailing a bending test on a link, noting twisting, fracture, and test setup difficulties.

Identifier  ExFiles\Box 78\2\  scan0068
Date  7th June 1912 guessed
  
-2-

link appear to take any bending stress, the other remaining practically vertical and merely twisting about its axis.
Below is a rough sketch of the fracture.

Bending Test.

We had some difficulty in rigging this up for a bending test, we found we could not obtain a tight enough fit on the mandle by either a drive fit or rusting in, the boss of the link merely expanding sufficiently to allow
  
  


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