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).
Power curve graph for a Phantom engine, showing the increase due to larger chokes in the carburettor.
| Identifier | ExFiles\Box 5\4\ 04-page188 | |
| Date | 23th September 1927 guessed | |
| STANDARD PHANTOM POWER CURVE (SHEWING INCREASE DUE TO LARGER CHOKES IN CARBURETTOR) ENGINE No. RE 225. COMPRESSION RATIO = 4 1/2 TO 1 STANDARD INDUCTION PIPE REAR EXHAUST SYSTEM (LATE SILENCER) CURVES CORRECTED TO N.T.P. CARBURETTOR MODEL PRODUCED H.S. 3 850 ML/M L.S CHOKES - SEE FROM CURVES ALL JETS PRESENTED INLET HEAT 126% SPRINTER CAM SHAFT PIN VALVE PISTON REMOVED [LARGEST CHOKES] STANDARD PISTON DEPRESSION IN INLET PISTON REMOVED LARGER CHOKES TO SAME HEATING Y-AXIS LEFT: BRAKE HORSE POWER X-AXIS: R.P.M. OF ENGINE Y-AXIS RIGHT: INLET PIPE DEPN (INS OF HG) | ||