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 comparing different pump diaphragms against petrol temperature.
| Identifier | ExFiles\Box 149\4\ scan0024 | |
| Date | 20th August 1936 | |
| STANDARD PUMP. 60% STANDARD PUMP. 70% STIFF DIAPHRAGM. 60% STIFF DIAPHRAGM. 70% G.1 G.3 PRATTS ETHYL Nº 4 FREE DELIVERY IN PINTS PER HOUR COMPARISON BETWEEN G.1 GERMAN & SPECIAL TYPE G.3 DIAPHRAGMS STANDARD LENGTHS OF PIPE NO CARBURETTER PETROL TEMPERATURE TO PUMP. | ||