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).
Power curve data table for a 75 HP engine, averaged from ten recent tests by Brazil Straker Ltd.
| Identifier | ExFiles\Box 36\2\ scan 085 | |
| Date | 16th November 1916 | |
| C O P Y. X. 2935. BRAZIL STRAKER LTD., 16.11.16. RE. 75 HP. POWER CURVE. The following is an average of ten recently tested engines:- R.P.M. | Load (lbs.) | B.H.P. | M.E.P. ------------------------------------------------ 1500 | 108.5 | 90.5 | 105.6 1400 | 111.2 | 86.5 | 108.2 1350 | 112.2 | 84.2 | 109.2 1300 | 113.0 | 81.6 | 110.0 1200 | 115.2 | 76.8 | 112.1 1100 | 115.5 | 70.6 | 112.4 1000 | 114.5 | 63.7 | 111.4 900 | 113.25 | 56.6 | 110.2 | ||