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).
Dynamometer consumption experiments showing wasteful consumption with a rich mixture.
| Identifier | ExFiles\Box 147\5\ scan0016 | |
| Date | 2nd December 1911 | |
| Consumption experiments on Dynamometer to show wasteful consumption with rich mixture. Comp 60 lbs. Cap. 25.35. X459 Table Data: Carb. | Minutes advance of mag | HP | Pts per HP hour | Miles per Gallon (Full throttle) -5 | +8 | 26. | .885 | 1.18 -4 | +7 | 26. | .885 | 1.18 -3 | +7 | 29.6 | .809 | 1.15 -2 | +7 | 29.9 | .811 | 1.14 -1 | +6 | 32.1 | .80 | 1.10 0 | +5 | 34.6 | .82 | 1.3 +1 | +4 | 36.4 | .86 | 57 +2 | +4 | 36.4 | .88 | 56 +3 | +3 | 37.1 | .91 | 53 +4 | +3 | 37.1 | .93 | 52 +5 | +3 | 37.1 | .97 | 50 Tested on 1700 type car - ignition timed at each test to give best car. [Vertical text on left] Consumption Summary. Gain in HP between the best workable weak & strong mixture is 4 notches total 5 HP is about 15% gain in consumption pts per HP hr. 12% less OVER [Vertical text on right] T.F. Platford 2/12/11 | ||