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 part throttle fuel economy of different induction systems for a 4 1/4 Litre Bentley.
| Identifier | ExFiles\Box 112\1\ scan0007 | |
| Date | 1st September 1940 guessed | |
| 4 1/4 LITRE BENTLEY PART THROTTLE FUEL ECONOMY S 36 COMP. RATIO 6.3:1 (E.W. 1296) ① STD. WRAITH INDN. SYSTEM (SINGLE D.C. 42 STROMBERG) ② EX. 27980 INDN. PIPE WITH DUPLEX CARB. (TYPE A.A. 25 STROMBERG) IDEAL PART THROTTLE MIXTURE FOR 'ROAD LOAD' FULL THROTTLE WEAKEST MAINTAINED CONS. Y-AXIS: PTS. / B.H.P. / HR X-AXIS: R.P.M. | ||