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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 plotting the delivery performance in Pints per Hour against Pump RPM for a Bensport No. 4 Petrol Pump under various test conditions.

Identifier  ExFiles\Box 31\5\  Scan063
Date  7th June 1933
  
BENSPORT N°4 PETROL PUMP LEC 3417
7-6-33
TAP, FILTER, TANK & PUMP AT SAME RELATIVE HEIGHTS & CONNECTED BY SAME LENGTHS & DIA (1/4") PIPES AS ON CHASSIS
DELIVERY PIPE 5/16" DIA CONNECTED TO TWO S.U. FLOAT CHAMBERS AS ON ENGINE
NOTE: ALL HOLES IN PUMP HEAD ARE 3/32" DIA. STRONG PRESSURE SPRING ALSO FITTED.
DELIVERY AT UNIONS NO CARBS FITTED
FLOAT CHAMBERS COMPLETE BUT FLOATS SUNK
FLOAT CHAMBERS COMPLETE
Y-AXIS: DELIVERY PTS / HR
X-AXIS: PUMP R.P.M
  
  


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