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).
From F.H.R. to Mr. Swetnam requesting a trial drawing to increase crankshaft rigidity.

Identifier  ExFiles\Box 25\3\  Scan001
Date  15th June 1910
  
H92-T.H 90-01: Aoy. 14)(a og) + zzr .H.H

15th June 1910.

Mr. Swetnam. 15/6/10 R1/D15610 Will you please get out the necessary trial drawing for increasing the crankshaft until the vibration is about 2,100 revs. Rigidity will have to be as 16^2 is to 21^2; rigidity is equal to D^4.

F.H.R.

X634
  
  


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