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 rates of a Bensport petrol pump at various RPMs using different diameter pipes.
| Identifier | ExFiles\Box 27a\2\ Scan152 | |
| Date | 2nd May 1933 | |
| GRAPH I BENSPORT PETROL PUMP - LEC 3417 TAP FILTER, TANK & PUMP AT SAME RELATIVE HEIGHTS, AND CONNECTED BY SAME LENGTHS AND DIA (1/4") PIPES AS ON CHASSIS. DELIVERY PIPES 1/4", 5/16" & 3/8" DIA, EACH THE SAME IN LENGTH, AND GIVING THE SAME HEAD (13") AS ON CHASSIS. CAM STROKE .203" DELIVERY PTS/HR PUMP R.P.M. 3/8 DIA DELIVERY PIPE 5/16 DIA DELIVERY PIPE 1/4 DIA DELIVERY PIPE AB | ||