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 the power development of Bentley engines for the Tourist Trophy races from 1934 to 1936.
| Identifier | ExFiles\Box 90a\3\ Scan002 | |
| Date | 12th November 1966 guessed | |
| BENTLEY POWER DEVELOPMENT TOURIST TROPHY RACES COMPLETE WITH RACING EXHAUST SYSTEMS. B.H.P. R P M ① 1934 3 1/2 LITRE COMP. RATIO 7.75:1 50% BENZOL 50% SHELL N°1 ② 1935 3 1/2 LITRE COMP. RATIO 8.35:1 50% BENZOL 50% ESSO ETHYL ③ 1936 4 1/4 LITRE COMP. RATIO 9.0:1 'ESSO' ETHYL B.M.E.P. CTS{C. Trot Salt - Carburation} | ||