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).
Performance graph for a Bensport petrol pump, plotting delivery and pressure against RPM with a stronger pressure spring.
| Identifier | ExFiles\Box 27a\2\ Scan167 | |
| Date | 6th May 1933 | |
| GRAPH IV BENSFORT PETROL PUMP LE C 3/47 CONDITIONS AS FOR GRAPH I BUT WITH STRONGER PRESSURE SPRING - 7.75 LB DELIVERY PTS/HR 5/16" DELIVERY PIPE 1/4" DELIVERY PIPE MAX PRESSURE 1/4" DELIVERY PIPE 5/16" DELIVERY PIPE DELIVERY PTS/HR MAX PRESS. LB/IN² PUMP R.P.M. | ||