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 curve graph for a modified vacuum pump on a Super Sports Engine.
| Identifier | ExFiles\Box 64\1\ scan0014 | |
| Date | 7th September 1928 | |
| V414 7-9-28 VACUUM PUMP (SUPER SPORTS ENGINE). DELIVERY CURVE OF PUMP AFTER MODIFICATION TO V413. DELIVERY (PINTS PER HOUR). R.P.M. OF ENGINE. FUEL DELIVERY BY PUMP THRO' STANDARD AUTO-VAC. FUEL DELIVERY REQUIRED BY ENGINE (FULL THROTTLE) | ||