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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).
Wraith Spring Drive and fitting a crankshaft damper.

Identifier  ExFiles\Box 8\5\  05-page23
Date  2nd March 1938
  
To HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}

Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}9/JH.2.3.38.

617

WRAITH SPRING DRIVE.

ECD.336 crankshaft damper with solid drive for fan pulley.

In reply to your memo. HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}16/BA.1.3.38. we would like the above scheme fitting to 29.G.VI.

Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}
  
  


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