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).
Test Department figures for a 190 HP engine, detailing power and throttle curve data.
| Identifier | ExFiles\Box 36\2\ scan 010 | |
| Date | 15th February 1916 | |
| R.R. 235 A (600 T) (S.C. 530. 15-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1546. COPY X. 2934 Test Dept Figures. POWER CURVE 190 HP. 2nd set B En Revs | Air screw Revs. | Lbs. | HP. | Conspt 4 pints. --------------------------------------------------------------- 2000 | 1180 | 332 | 217.62 | m/s 1.39 1900 | 1121 | 342 | 212.9 | 1.43½ 1800 | 1062 | 352 | 207.68 | 1.48 1700 | 1003 | 364 | 202.82 | 1.56½ full 1600 | 944 | 368 | 192.97 | 1.58 1500 | 885 | 374 | 185.89²| 1.2 -> 2 m.{Mr Moon / Mr Moore} 4 secs 1400 | 826 | 377 | 173 | 1.6 2 m.{Mr Moon / Mr Moore} 12 " 1300 | 767 | 376 | 160.2 | 1.11 2 m.{Mr Moon / Mr Moore} 22 " 1200 | 708 | 375 | 147.5 | 1.13 2 m.{Mr Moon / Mr Moore} 26 " 1100 | 649 | 375 | 135.2 | 1.16 2 m.{Mr Moon / Mr Moore} 32 " 1000 | 590 | 377 | 123.4 | 1.19 2 m.{Mr Moon / Mr Moore} 38 " THROTTLE CURVE Eng. Revs. | screw Revs. | Lbs. | HP. | Conspt. --------------------------------------------------------------- 1700 | 1003 | 363 | 202.2 | 58 secs m/s 1.1 1600 | 944 | 340 | 178.2 | 1500 | 885 | 318 | 156.3 | 1.10 1400 | 826 | 292 | 133.9 | 1.19 1300 | 767 | 272 | 115.6 | 1.29 1200 | 708 | 253 | 89.5 | 1.43½ 1100 | 649 | 228 | 82.2 | 1.57½ 1000 | 590 | 209 | 68.5 | 2.11 800 | 472 | 170 | 44.5 | 2.51. & | ||