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 showing power variation and induction depression with different choke sizes for a Phantom engine.
Identifier | ExFiles\Box 66a\2\ scan0197 | |
Date | 26th April 1928 guessed | |
POWER VARIATION WITH SIZE OF CHOKE, (PHANTOM). ENGINE No A.U.25. WEIR TYPE INDN PIPE (SCH 980). STD. TWIN EXHAUST MANIFOLDS. VERTICAL CLAUDEL-HOBSON CARBURETTOR. COMPRESSION RATIO = 4.25. STANDARD CAMSHAFT. TEST BED SILENCER. CONTINUOUS LINE CURVES:- CHOKE = 1.530" DIA. AREA AT RESTRICTION = 1.532 SQ.INS. DOTTED LINE CURVES:- CHOKE = 1.800" DIA. AREA AT RESTRICTION = 2.238 SQ.INS. RAKE HORSE POWER. R.P.M. OF ENGINE. INDUCTION DEPRESSION (INS. MERCURY). B.H.P. STD. CARB. DEPRESSION AT CHOKE DEPRESSION IN INDUCTION PIPE. | ||