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).
Blueprint graph of ignition advance curves against engine RPM for different cylinder head designs.
Identifier | ExFiles\Box 134\2\ scan0133 | |
Date | 11th August 1937 | |
FIG: III IGNITION ADVANCE CURVES IGNITION ADVANCE R.P.M. ① No: 1 HEAD AND No: 2 HEAD WHEN TURBULENT. THROAT AREAS = 1.01 AND .96 □" ② No: 2 HEAD DE-TURBULATED. THROAT AREA = 1.16 □" ③ No: 4 INCLINED VALVE HEAD IN ALUMINIUM. THROAT AREA = 1.57 □" ④ THROAT PLUG POSITION USED IN EACH CASE. STANDARD 3 1/2 LITRE BENTLEY (SINGLE CYLINDER UNIT.) E.D. 11.8.37 | ||