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).
Graph comparing Brake Mean Effective Pressure (B.M.E.P.) against gas velocity past the valves for Hispano and E.A.C./R.R.C.H. carburettor configurations.
| Identifier | ExFiles\Box 72\4\ scan0151 | |
| Date | 12th March 1924 guessed | |
| B.M.E.P. AGAINST CONVENTIONAL GAS VELOCITY PAST VALVES B.M.E.P. STARTS TO FALL AT APPROX 160 FT/SEC GAS VEL. FOR E.A.C. & 183 " " " " " HISPANO. B.M.E.P. lbs/□" 120 110 100 90 80 70 GAS VELOCITY PAST VALVES FT/SEC. 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 HISPANO E.A.C. & R.R.C.H. CARBS. | ||