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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).
Experimental crankshafts for the 20/25 HP chassis, concluding with a decision to alter the dies.

Identifier  ExFiles\Box 103\3\  scan0076
Date  19th August 1931
  
ROY.{Sir Henry Royce}
c. Wor.{Arthur Wormald - General Works Manager}
c. Hs.{Lord Ernest Hives - Chair}
c. RHC.{R. H. Coverley - Production Engineer}
85010
BY.2/G.19.8.31.

20/25 HP. CHASSIS - EXPERIMENTAL CRANKSHAFTS.

Referring to ROY.{Sir Henry Royce}13/MG.18.8.31. it appears practically certain that we shall have to order a further batch of 20/25 HP. material. Further, enough work has been done with partially balanced cranks to know that we obtain a definite gain. On the other hand, the 20/25 HP. unbalanced crank with larger crankpin has definitely given trouble. In view, therefore, of all the facts, it would appear that we must spend the £150. to alter the dies.

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


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