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 the power output and fuel consumption of a standard 20 HP engine against an experimental engine.
| Identifier | ExFiles\Box 6\7\ 07-page022 | |
| Date | 21th July 1927 | |
| IMPROVED POWER OUTPUT OF 20 H.P. R.R. ENG. No 11 G II COMPRESSION RATIO - 5.45 TO 1 LARGE VALVES (1.400 DIA) LONG DURATION CAMSHAFT STROMBERG VERTICAL CARBURETTER T SHAPED INDUCTION MANIFOLD SPECIAL EXHAUST MANIFOLD WITH 2" OUTLET PIPE SMALL HOT SPOT STIFFER VALVE SPRINGS CURVES CORRECTED TO N.T.P. B.H.P. ENG. R.P.M. PTS/B.H.P./HOUR. B.H.P. EXP ENGINE B.H.P. STD 20 H.P. CONSUMPTION STD 20 H.P. CONSUMPTION EXP ENGINE a.l.p. 21.7.27 21 SEP 1927 | ||