Comparative table of specifications for various engine models.
| Identifier | ExFiles\Box 102\5\ scan0134 | |
| Date | 24th June 1932 guessed | |
| { Header: , P.II.: Bore Ins. 4.25, China(Experimental Engine).: Bore Ins. 3.25, J.1.: Bore Ins. 3.25, J.3.: Bore Ins. 3.4, Peregrine(Experimental Bentley car never produced / Aero Engine).: Bore Ins. 2.725, R. {Sir Henry Royce} engine.: Bore Ins. 6.00, F. {Mr Friese} engine.: Bore Ins. 5.00, F. {Mr Friese} high lift.: Bore Ins. }, { Header: , P.II.:Stroke Ins. 5.5: China(Experimental Engine).:Stroke Ins. 4.5: J.1.:Stroke Ins. 4.5: J.3.:Stroke Ins. 5.0: Peregrine(Experimental Bentley car never produced / Aero Engine).: Stroke Ins. 4.125: R. {Sir Henry Royce} engine.: Stroke Ins. 6.6: F. {Mr Friese} engine.: Stroke Ins. 5.5: F. {Mr Friese} high lift.: Stroke Ins. }, { Header:: P.II.:Swept Vol. c.c 7669: China(Experimental Engine).:Swept Vol. c.c 3670: J.1.:Swept Vol. c.c 3670: J.3.:Swept Vol. c.c 4464: Peregrine(Experimental Bentley car never produced / Aero Engine).:Swept Vol. c.c 2364: R. {Sir Henry Royce} engine.:Swept Vol. c.c : F. {Mr Friese} engine.:Swept Vol. c.c : F. {Mr Friese} high lift.:Swept Vol. c.c }, { Header:: P.II.:Comp. Space c.c. 303: China(Experimental Engine).:Comp. Space c.c. 130: J.1.:Comp. Space c.c. 120: J.3.:Comp. Space c.c. 150: Peregrine(Experimental Bentley car never produced / Aero Engine).:Comp. Space c.c. 82: R. {Sir Henry Royce} engine.:Comp. Space c.c. : F. {Mr Friese} engine.:Comp. Space c.c. : F. {Mr Friese} high lift.:Comp. Space c.c. }, { Header:: P.II.:Comp. Ratio. 5.22: China(Experimental Engine).:Comp. Ratio. 5.70: J.1.:Comp. Ratio. 5.2: J.3.:Comp. Ratio. 5.93: Peregrine(Experimental Bentley car never produced / Aero Engine).:Comp. Ratio. 5.85: R. {Sir Henry Royce} engine.:Comp. Ratio. : F. {Mr Friese} engine.:Comp. Ratio. : F. {Mr Friese} high lift.:Comp. Ratio. }, { Header:: P.II.:Valve Lift .400: China(Experimental Engine).:Valve Lift .400: J.1.:Valve Lift .400: J.3.:Valve Lift .400: Peregrine(Experimental Bentley car never produced / Aero Engine).:Valve Lift .534: R. {Sir Henry Royce} engine.:Valve Lift .570: F. {Mr Friese} engine.:Valve Lift .475: F. {Mr Friese} high lift.:Valve Lift .550 }, { Header:: P.II.:Valve dia. Inlet E82458 1.900: China(Experimental Engine).:Valve dia. Inlet E54349 1.350: J.1.:Valve dia. Inlet E56851 1.400: J.3.:Valve dia. Inlet E57702 1.45: Peregrine(Experimental Bentley car never produced / Aero Engine).:Valve dia. Inlet E100086 1.20: R. {Sir Henry Royce} engine.:Valve dia. Inlet 1.950: F. {Mr Friese} engine.:Valve dia. Inlet 1.625: F. {Mr Friese} high lift.:Valve dia. Inlet 1.625 }, { Header:: P.II.:Valve dia. Exhaust E82459 1.700: China(Experimental Engine).:Valve dia. Exhaust E54948 1.250: J.1.:Valve dia. Exhaust E56852 1.300: J.3.:Valve dia. Exhaust E57703 1.35: Peregrine(Experimental Bentley car never produced / Aero Engine).:Valve dia. Exhaust E100087 1.125: R. {Sir Henry Royce} engine.:Valve dia. Exhaust : F. {Mr Friese} engine.:Valve dia. Exhaust : F. {Mr Friese} high lift.:Valve dia. Exhaust }, { Header:: P.II.:Area Valve/litre In. 2.11: China(Experimental Engine).:Area Valve/litre In. 2.23: J.1.:Area Valve/litre In. 2.37: J.3.:Area Valve/litre In. 2.10: Peregrine(Experimental Bentley car never produced / Aero Engine).:Area Valve/litre In. 2.69: R. {Sir Henry Royce} engine.:Area Valve/litre In. 1.845: F. {Mr Friese} engine.:Area Valve/litre In. 2.246: F. {Mr Friese} high lift.:Area Valve/litre In. }, { Header:: P.II.:Area Valve/litre Ex. 1.55: China(Experimental Engine).:Area Valve/litre Ex. 1.90: J.1.:Area Valve/litre Ex. 2.02: J.3.:Area Valve/litre Ex. 1.81: Peregrine(Experimental Bentley car never produced / Aero Engine).:Area Valve/litre Ex. 2.34: R. {Sir Henry Royce} engine.:Area Valve/litre Ex. : F. {Mr Friese} engine.:Area Valve/litre Ex. : F. {Mr Friese} high lift.:Area Valve/litre Ex. }, { Header:: P.II.:Ratio (Inlet) Lift / Valve dia. .252: China(Experimental Engine).:Ratio (Inlet) Lift / Valve dia. .296: J.1.:Ratio (Inlet) Lift / Valve dia. .286: J.3.:Ratio (Inlet) Lift / Valve dia. .275: Peregrine(Experimental Bentley car never produced / Aero Engine).:Ratio (Inlet) Lift / Valve dia. .278: R. {Sir Henry Royce} engine.:Ratio (Inlet) Lift / Valve dia. .292: F. {Mr Friese} engine.:Ratio (Inlet) Lift / Valve dia. .292: F. {Mr Friese} high lift.:Ratio (Inlet) Lift / Valve dia. .337 } | ||
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).