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 an A.C. Petrol Pump Model C, plotting delivery rate against pump speed for different pipe diameters.
| Identifier | ExFiles\Box 106\2\ scan0109 | |
| Date | 23th August 1932 | |
| A.C. PETROL PUMP - LARGE TYPE - MODEL 'C' TESTED AS SUPPLIED .250" STROKE DELIVERY PTS/HR. PUMP SPEED R.P.M. 240 220 200 180 160 140 120 100 80 250 500 750 1000 1250 1500 1750 2000 5/16" DIA: PIPE LINE 1/4" DIA: PIPE LINE 23-8-32 | ||