Blueprint graph of engine performance showing power output, BMEP, and compression pressure against RPM.
| Identifier | ExFiles\Box 5a\5\ 05-page188 | |
| Date | 8th December 1931 guessed | |
| POWER OUTPUT CTR. UNIT CHINA(Experimental Engine) R.M. 55 CAMSHAFT E.57177 (10.5") C/R 5.74 STANDARD 1.875" LARGER R.R. CARBURETTER ① COMPLETE EXHAUST SYSTEM 1.5" PIPES PT SHORT ② SILENCER SMALL FRONT EXPANSION BOX AS ABOVE BUT C.O. OPEN. Valve Timing Diagram: T.D.C. 020 CLEAR Ex 33.7 IN 42.8 Axes Labels: Left Y-Axis: B.H.P., COMPR. PR. {Percy H. Rose} LBS/SQ. IN Right Y-Axis: B.M.E.P. X-Axis: R.P.M. Graph Note: EARLY TIMING | ||
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).