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 comparing the power performance of Ramp and Standard cylinder heads on a Bentley single-cylinder test engine using normal fuel.
Identifier | ExFiles\Box 133\2\ scan0068 | |
Date | 26th July 1934 guessed | |
SHEET 4 V1709. BENTLEY SINGLE CYLINDER TESTS POWER COMPARISON OF RAMP & STANDARD CYL. HEADS (NORMAL FUEL) NATURALLY ASPIRATED OPEN EXHAUST FUEL - N°1 SHELL COMPRESSION RATIO: RAMP: 6.59; STD: 6.40. VALVE TIMING (.020 CLEARANCE): I.O. 4°E; I.C. 51°L; E.O. 51°E; E.C. 7°L. (STANDARD BENTLEY). BRAKE HORSE POWER B.M.E.P. (LBS./SQ.IN.) IGNITION ADVANCE SP.{Mr Spinney} FUEL CONS. R.P.M. RAMP STANDARD SP.{Mr Spinney} FUEL CONS. (RAMP) (STD.) MIN. IGNITION ADV. (RAMP) (STD.) | ||