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).
Road tests comparing the performance of 'Pynol' motor fuel against Petrol on a 40/50 R-R Car (49-GB).
| Identifier | ExFiles\Box 20\6\ Scan066 | |
| Date | 15th May 1923 guessed | |
| REPORT ON ROAD TESTS OF "PYNOL" MOTOR FUEL. These tests were carried out on a 40/50 R-R Car (49-GB) with the object of comparing the results obtained by using "Pynol" with those obtained by using Petrol. These tests may be divided into three sections :- (1) Acceleration. (2) Consumption. (3) Hill climbing. (1) ACCELERATION. PETROL. Change of speed from :- | Time secs. | Acen. ft. sec. 10 to 20 m.p.h. | 5.935 | 2.48 20 " 30 m.p.h. | 5.935 | 2.48 30 " 40 m.p.h. | 7.600 | 1.93 40 " 50 m.p.h. | 12.250 | 1.19 PYNOL. Time secs. | Acen. ft. sec. 7.0 | 2.10 6.817 | 2.15 8.50 | 1.72 19.45 | 0.75 (2) CONSUMPTION. PETROL. Average speed. | Consumption. 22.9 | 16.6 m.p.g. 32.2 | 15.8 " PYNOL. Average speed. | Consumption. 22.5 | 16.2 m.p.g. 30.0 | 16.2 " contd:- | ||