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 power curves for two proposed Continental 25 HP engine configurations with an open exhaust.
| Identifier | ExFiles\Box 55\1\ Scan159 | |
| Date | 19th May 1932 guessed | |
| COMPARISON OF PROPOSED CONTINENTAL 25 H.P. POWER CURVES. OPEN EXHAUST. RM{William Robotham - Chief Engineer} 64 A) J1 HEAD. TWO R.R. CARBS. TO LEC 2924. 1.00 CHOKES 6.34 C/R TIMING ① B) CHINA HEAD 5.75 C/R STD CARB AS 20 G IV LAST 10,000 MILES TIMING ② B.H.P. B.M.E.P. Left Diagram (②): EX 40.5 IN 44 6 .020 CLCE WW CAMSHAFT TO E 57177 110.5° BET. CAMS Right Diagram (①): EX 49 IN 50 3.5 .020 CLCE TWO EXHAUST CAMS FROM CAMSHAFT E 57177 112° BETWEEN CAMS R.P.M M.P.H. WITH 11x50 AXLE | ||