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 the Lighter Phantom engine, showing the performance increase from a low depression carburettor.
| Identifier | WestWitteringFiles\Q\2-July1927-September1927\ 119 | |
| Date | 13th July 1925 | |
| LIGHTER PHANTOM POWER CURVE. (SHEWING INCREASE DUE TO LOW DEPRESSION CARBURETTOR). ENGINE No AU 25. COMPRESSION RATIO - 4.61 TO 1 STANDARD INDUCTION PIPE BED EXHAUST SYSTEM (WITH SILENCER) CORRECTED TO N.T.P. EAGLE VIII HORIZONTAL R.R.C.H. CARB. STANDARD CARB. INDUCTION' PIPE DEPN STD. CARB. EAGLE CARB. BRAKE HORSE POWER R.P.M. OF ENGINE DEPN IN IND.N PIPE (INS. OF HG.) | ||