Graph comparing power output, ignition advance, and B.M.E.P. against R.P.M. for a new aluminum engine and a standard engine.
| Identifier | WestWitteringFiles\P\October1926-November1926\ Scan017 | |
| Date | 27th September 1926 | |
| POWER OUTPUT & IGNITION ADVANCE For The New ALUM. ENG. And STD ENGINE. SPARK ADVANCE. DEGREES. B.H.P. B.M.E.P. lbs/□" R.P.M. SINGLE IGN ON LIGHTER PHANTOM. SYNCHRONISED IGN. STD ENG. SYNCHRONISED IGN. NEW ENG. NEW ENG. STD ENG. NEW ALUM. ENG. 4.45 COMP. RATIO. STD 4.1/1 COMP. RATIO ENGINE. STD. SILENCER WITH CUT OUT OPEN. COMP. RATIO. STD. ENG. 4.1 TO 1. STD. VALVE TIMING. " NEW " 4.45 TO 1. aeb/ | ||
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).