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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).
Expressing a preference for the stroke proportions on a 5.5 engine, referencing the Kestrel engine.

Identifier  ExFiles\Box 179b\1\  img162
Date  16th November 1932
  
RG.{Mr Rowledge} FROM H.{Arthur M. Hanbury - Head Complaints}

C. to BG. WOT. HS.{Lord Ernest Hives - Chair} AERO ENGINES.

R1/M16.11.32.

X2917

I don't like the idea of making the 5.5 engine (middle size) with 5.5" stroke, and should prefer its proportions to be the same as the Kestrel, about 6".

Otherwise, I am very pleased for you to go ahead.

R.{Sir Henry Royce}
  
  


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