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).
Ignition Advance/B.M.E.P. curves for an Aluminium Phantom engine at 1000 RPM.
| Identifier | ExFiles\Box 42\4\ Scan061 | |
| Date | 11th December 1926 guessed | |
| SHEET 4. IGNITION ADVANCE/B.M.E.P. CURVES FOR 1000 R.P.M. ALUM. PHANTOM WITH HEAD TO L.C. 2230 (COMP RATIO. = 4.95 : 1) CORRECTED TO N.T.P. B.M.E.P. (LBS PER SQ. IN.) IGNITION ADVANCE ON FLYWHEEL (DEGREES) BOTH IGNITIONS SYNCHRONISED BATTERY IGNITION ONLY. 104 102 100 98 96 10 20 30 40 50 | ||