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 the performance of three different carburettors based on B.HP and B.M.E.P. against R.P.M.
| Identifier | ExFiles\Box 102\5\ scan0076 | |
| Date | 19th August 1931 | |
| RM.{William Robotham - Chief Engineer} 28 19/8/31 CARBURETTER COMPARISON ON CHINA 5-1 C/R HIGH OUTPUT COIL 110° SHAFT ① S.U. CARB 1 5/8 THROTTLE DIA ② SOLEX CARB. 1 5/8 THROTTLE DIA. 29 MM CHOKE ③ STD 15% LARGER R.R. 1 1/2 THROTTLE DIA B.H.P. 80 70 60 50 40 30 20 10 R.P.M. 500 1000 1500 2000 2500 3000 3500 B.M.E.P. 5 110 4 100 IND. DEPN: INS: HG 3 90 2 80 1 70 60 | ||