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 delivery flow of a standard petrol pump against one with stronger springs under varying back pressure.

Identifier  ExFiles\Box 20\9\  Scan135
Date  1st April 1936
  
PHANTOM III PETROL PUMP TESTS (S.W.)
SP.{Mr Spinney}23
EFFECT OF BACK PRESSURE UPON THE DELIVERY FLOW
PTS/HR.
STANDARD PUMP AS DELIVERED BY S.W.
SPRING WIRE .056 DIA:
PUMP WITH STRONGER SPRINGS .068 DIA:
1lb ☐"
BACK PRESS. INS. Hg.
L.H.S / 4. 36.
  
  


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