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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).
Query regarding the delay in developing a longer duration cam for the 'SS' engine.

Identifier  ExFiles\Box 14\2\  Scan017
Date  20th October 1928
  
Hs.{Lord Ernest Hives - Chair}
BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce}
c. to Wor.{Arthur Wormald - General Works Manager}

x7010

R5/M20.10.28.

'SS{S. Smith}' ENGINE. X.7090
X.7010

Why can't we get on more quickly with the longer duration cam - present exhaust used as inlet - (E2/M30.8.28 - nearly two months ago) with 114º and 116º, and 52º and 54º crankshaft respectively?

I think this is waiting for BY.{R.W. Bailey - Chief Engineer}

R.{Sir Henry Royce}
  
  


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