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).
Graph comparing the flow rate versus pressure difference for a standard head and a large inlet valve head on a Phantom engine.

Identifier  ExFiles\Box 31\2\  Scan115
Date  29th August 1933 guessed
  
CURVE 3
PHANTOM
COMPARISON OF STANDARD HEAD - E.83538
& LARGE INLET VALVE HEAD - E.83906
AT FULL VALVE LIFT - i.e. .480" LIFT.
FLOW THRO' PORT
CU.FT./MIN.
(1) - STD. HEAD E.83538
(2) - LARGE VALVE HEAD - E.83906
PRESS. DIFFERENCE ACROSS VALVE - Hg.
  
  


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