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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).
Hand priming test results for a Bensport petrol pump.

Identifier  ExFiles\Box 27a\2\  Scan175
Date  29th May 1933 guessed
  
BENSPORT PETROL PUMP.

HAND PRIMING TESTS - TO E'S REQUEST.

Using the full Bensport suction system, the total number of strokes required to pump from dry using .203" (normal) and .260" (max. possible) equivalent cam strokes were as follows :-

.203" stroke.
33 pumps/16 secs.
32 pumps/15 secs.
30 pumps/29 secs.

.260" stroke.
20 pumps/12 secs.
21 pumps/13 secs.
23 pumps/22 secs.

NB.
One "pump" equals one complete rev. of cam.

Hs{Lord Ernest Hives - Chair}/W.Bell.
  
  


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