Bench tests on a Goshawk engine comparing Petrol and Pynol fuels.
| Identifier | WestWitteringFiles\J\May1923\ Scan62 | |
| Date | 15th May 1923 | |
| 15.5.23. BENCH TESTS. "PYNOL" TESTS ON GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)). Comparison between Petrol and "Pynol". Conditions. Barometer = 29.6" Sp. {Mr Spinney} Gr. {George Ratcliffe} petrol used = 0.752 " Pynol " = 0.804 Carburetter was set in each case to give the maximum power together with the minimum of fuel consumption. Table of results. | | PETROL | | | | PYNOL | | | | |---|---|---|---:|---:|---|---:|---:|---:| | R.P.M. | Lbs. | Pts. hr. | B.H.P. | Pts. HP.hr. | Lbs. | Pts. hr. | B.H.P. | Pts. HP.hr. | | 500 | 51 | 9 | 10.62 | 0.847 | | | | | | 750 | 54 | 12.25 | 16.88 | 0.725 | 53 | 13.5 | 16.57 | 0.815 | | 1000 | 53 | 14.8 | 22.09 | 0.670 | 52.5 | 17.5 | 21.88 | 0.799 | | 1250 | 50.5 | 19.5 | 26.30 | 0.741 | 51.5 | 20.5 | 26.82 | 0.765 | | 1500 | 49.5 | 21.5 | 30.94 | 0.695 | 50.5 | 22.5 | 31.56 | 0.713 | | 1750 | 49 | 24.75 | 35.73 | 0.692 | 49.25 | 25.5 | 35.91 | 0.710 | | 2000 | 49 | 28 | 40.80 | 0.686 | 48.25 | 30.0 | 40.20 | 0.759 | | 2250 | 48 | 29.5 | 45.00 | 0.655 | 46.75 | 30.5 | 38.83 | 0.696 | | 2500 | 45.5 | 34.5 | 47.39 | 0.727 | 44.0 | 32.0 | 45.83 | 0.698 | | 2750 | 42 | 36 | 48.12 | 0.748 | 41 | 33.5 | 46.98 | 0.713 | | 3000 | 39 | 36 | 48.75 | 0.738 | 37 | 35.0 | 46.25 | 0.757 | See Horse power and consumption curves. | ||
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).