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).
Power curve graph comparing single horizontal and downdraught carburettors on a B.4 Bentley unit.
| Identifier | ExFiles\Box 93\2\ scan0065 | |
| Date | 1st July 1935 | |
| TEST N°3 CURVE N°2 INDUCTION - SYSTEMS JULY. 1935 B.4 UNIT. (BENTLEY) POWER ① SINGLE HORIZONTAL CARB ② " DOWNDRAUGHT " COMP. RATIO 6.5:1 CAMSHAFT (BENTLEY) B.H.P B.M.E.P R.P.M. | ||