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).
Detonation tests on a Bentley single cylinder engine with a standard cylinder head.
| Identifier | ExFiles\Box 133\2\ scan0067 | |
| Date | 26th July 1934 guessed | |
| BENTLEY SINGLE CYLINDER TESTS. SHEET 3. V1708 DETONATION TESTS WITH STANDARD CYLINDER HEAD. NATURALLY ASPIRATED COMPRESSION RATIO - 6.4. FUEL - N°1 SHELL SILENCED EXHAUST TO DETECT DETONATION. VALVE TIMING (.020" CLEARANCE): I.O. 4°E; I.C. 51°L; E.O. 51°E; E.C. 7°L (STANDARD BENTLEY) CONSUMPTION LOOPS & INTENSITY OF DETONATION LINE OF MAX. B.M.E.P. AT OPTIMUM IGNITION ADV. & SPECIFIC CONS. B.M.E.P. (LBS./SQ. IN.) SPECIFIC FUEL CONS. (PTS./BHP/HR) Graph data points include RPM curves for 1250, 1500, 1750, 2000, and 3000 RPM. MAXIMUM PERFORMANCE AT OPTIMUM IGNITION ADVANCE AND SPECIFIC CONSUMPTION INDICATING DEGREE OF DETONATION. B.M.E.P. (LBS./SQ. IN.) IGNITION ADVANCE R.P.M. AUDIBLE RANGE OF DETONATION (FEET) MAX. B.M.E.P. AT MIN IGNITION ADVANCE DETONATION AT MAX. B.M.E.P. MIN. IGNITION ADVANCE FOR MAX. POWER | ||