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).
Note on engine timing for single carburetter characteristics and port ramming to achieve optimum results.

Identifier  ExFiles\Box 134\1\  scan0117
Date  23th December 1938
  
-5-
Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}23.12.38.

This shows that a single version of a main engine is not representative and requires a timing suitable for the characteristics of a single carburetter and its port ramming to obtain the optimum results.

Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}
  
  


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