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).
Performance comparison graph for three different carburetter configurations, plotting B.H.P and B.M.E.P against R.P.M.
| Identifier | ExFiles\Box 181\M13\M13.2\ img102 | |
| 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. R.P.M. IND. DEPN: INS. HG B.M.E.P. | ||