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).
Graph showing power and consumption curves from Bentley single cylinder tests for the Nº2 Ramp Head.
| Identifier | ExFiles\Box 133\2\ scan0087 | |
| Date | 5th January 1944 guessed | |
| BENTLEY SINGLE CYLINDER TESTS SHEET 4 POWER & CONSUMPTION CURVES, (Nº2 RAMP HEAD) Nº2 RAMP HEAD (L.C. 3871) COMPRESSION RATIO = 6.5 INLET VALVE = 1.500" DIA. EXHAUST VALVE = 1.400 DIA. NATURALLY ASPIRATED AEROLITE PISTON ZENITH TRIPLE DIFFUSER CARBURETTOR (32% CHOKE) OPEN EXHAUST FUEL - DTD 224 BRAKE HORSE POWER R.P.M. B.M.E.P. (LBS/SQ. IN.) SP.{Mr Spinney} FUEL CONS. (PTS/BHP/HR) STD. BENTLEY HEAD, (CR{Mr Cra???ster / Mr Chichester}: 6.4) & NORMAL VALVE TIMING. TIMED TO GIVE MAXIMUM POWER AT 3000 RPM, BUT OVERLAP LIMITED TO 12º DITTO, BUT WITH NO LIMIT TO OVERLAP What actual timing STD. BENTLEY HEAD, (CR{Mr Cra???ster / Mr Chichester}: 6.4). TIMED TO GIVE MAX. POWER AT 3000 RPM, BUT OVERLAP LIMITED TO 12º | ||