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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).
Use of a cast light magnesium alloy for the valve rocker cover on the lighter Phantom engine.

Identifier  ExFiles\Box 71\2\  scan0167
Date  13th October 1926
  
X8840

To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer}
c. to BJ. Hs.{Lord Ernest Hives - Chair}

E1/M13.10.26.

RE. LIGHTER PHANTOM ENGINE. X. 8080 X. 8840

Referring to the valve rocker cover of the lighter Phantom engine, we should prefer to retain this as a casting rather than use the sheet metal construction, and our idea is to make this part from one of the light magnesium alloys.

Perhaps you would kindly see what could be done.

E.{Mr Elliott - Chief Engineer}
  
  


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