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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).
Proposed modification to the 25HP induction stand pipe (E.51083) to improve starting by cutting off the pilot pipe.

Identifier  ExFiles\Box 56\2\  Scan173
Date  6th January 1931
  
X50701

To By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}
c. to Hs.{Lord Ernest Hives - Chair}

Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}3/KT.6.1.31. X5770

We have obtained better results in starting up the 25HP. by a modification to the stand pipe in the induction pipe. We propose to incorporate this modification on all 25HP cars in future production. The modification is the cutting off the pilot pipe of the stand pipe E.51083. at the top of the screwed portion. This leaves the bore the same throughout with no restriction as in the case at present.

Hs{Lord Ernest Hives - Chair}/G.W.Hancock.
  
  


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