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).
Bench test results comparing Petrol and 'Pynol' fuel on a Goshawk engine.
| Identifier | ExFiles\Box 32\1\ Scan082 | |
| Date | 15th May 1923 | |
| BENCH TESTS. "PYNOL" TESTS ON GOSHAWK. 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 | 31 | 9 | 10.62 | 0.847 | | | | 750 | 34 | 12.25 | 16.88 | 0.725 | 33 | 13.5 | 16.57 | 0.815 1000 | 33 | 14.8 | 22.09 | 0.670 | 32.5 | 17.5 | 21.88 | 0.799 1250 | 30.5 | 19.5 | 26.30 | 0.741 | 31.5 | 20.5 | 26.82 | 0.765 1500 | 49.5 | 21.5 | 30.94 | 0.695 | 30.5 | 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 | 45.60 | 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. | ||