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).
Performance graph comparing power curves for an IVG.S engine unit under different carburettor and exhaust configurations.
| Identifier | ExFiles\Box 5a\5\ 05-page148 | |
| Date | 5th August 1931 guessed | |
| POWER COMPARISON CURVES (JAPAN) ENGINE UNIT IV G.S (5.72:1 COMP. RATIO) SPECIAL 100/130M. DURATION CAMSHAFT VALVE TIMING (.010" CLEARANCE) I.O. 12 1/2 A.T.D.C. E.O. 45 B.B.D.C. I.C. 52 1/2 A.B.D.C. E.C. 8 1/2 B.T.D.C. B.H.P. R.P.M. B.M.E.P. lbs. per sq. inch 2 CYLINDER HORIZONTAL CARBS. OPEN EXHAUST 2 CYLINDER HORIZONTAL CARBS. WITH R.R. II EXH. SYSTEM TWIN-CHOKE ZENITH CARB. OPEN EXHAUST TWIN-CHOKE ZENITH CARB. WITH R.R. II EXH. SYSTEM | ||