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 showing comparative tests of a sports petrol pump with a standard spring versus a strong spring.

Identifier  ExFiles\Box 27a\2\  Scan181
Date  27th May 1933
  
BENT. SPORTS PETROL PUMP
COMPARITIVE TESTS WITH STANDARD SPRING AND STRONG SPRING
12' FT 1/4" PIPE LINE.
1/16" & 9/16" DIA STRAIGHT DELIVERY PIPE
DELIVERY FROM 1000 R.P.T PUMP
Text associated with solid line (top):
STD BATTLES
STRONG SPRING ALL HOLES
3/32 DIA 12" SUCTION STRAIGHT DELIVERY
Text associated with dashed line (bottom):
ALL Holes .312" DIA
STD SPRING
12" SUCTION STRAIGHT DELIVERY.
STD BATTLES
3.8lbs/sq"
  
  


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