Graph showing constant speed petrol consumption, comparing a 4B50 model with a 1939 Century Buick.
| Identifier | ExFiles\Box 123\1\ scan0051 | |
| Date | 3rd April 1940 | |
| CONSTANT SPEED PETROL CONSUMPTION A 4B50 1 3/8" CARBS: 2 CHOKES AND 36 DIA. THROATS. JETS: RINGED MAIN 121 1/2 AND 52 1/2 MECH. BY-PASS. CURVE TAKEN IN DIRECT GEAR AT 2277 ENGINE REVS/MILE. F. {Mr Friese} 1939 CENTURY BUICK. CURVE 'B' CORRECTED TO THE SAME ENGINE REVS/MILE AS 'A'. THE SAME ENGINE CAPACITY AND WEIGHT AS 'A'. M.P.G. M.P.H. A TAS {T. Allan Swinden} 52/3.4.40 | ||
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).