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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 discussing stress testing methodology and the balance between component strength and unnecessary weight, referencing Lanchester's back axle.

Identifier  ExFiles\Box 49\1\  Scan010
Date  18th March 1912 guessed
  
(3)

This last test should be made on a good foundation of concrete or on an iron plate.

Repeat and increase the test until the weakest place is found; increase the strength of this and lighten others, the theory being that it should all fail together.

Lanchester's back axle looks so small and so much less strong that I think we are now overdoing strength, with the disadvantage of unnecessary weight.

F.H.R.
  
  


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