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).
Table comparing engine Brake Horse Power (B.HP) across different carburettor and exhaust configurations at various R.P.M.
| Identifier | ExFiles\Box 72\4\ scan0338 | |
| Date | 28th March 1924 guessed | |
| -2- E.A.C. B.H.P. | R.P.M. | KNAVE CARBURETTER. - Standard Manifold free exhaust. | KNAVE CARBURETTER. - Straight exhaust pipes. | 1 R.R.C.H. CARBURETTER. - Straight exhaust pipes. | 2 R.R.C.H. CARBURTTERS. - Straight exhaust pipes. | |---|---|---|---|---| | 1000 | 57 | 60 | 59.6 | 64.6 | | 1250 | 70 | 75.5 | 76 | 81.8 | | 1500 | 84.5 | 89 | 91.8 | 100.3 | | 1750 | 97 | 103.6 | 105 | 114.8 | | 2000 | 106.6 | 116 | 117.5 | 127.4 | | 2250 | 113.5 | 123.7 | 128.4 | 133 | | 2500 | 118.5 | 129 | 132 | 133.5 | Hs.{Lord Ernest Hives - Chair} | ||