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 plotting Brake Horsepower against RPM for Bentley engines used in the Tourist Trophy races from 1934-1936.
| Identifier | ExFiles\Box 82\4\ scan0388 | |
| Date | 1st October 1936 guessed | |
| BENTLEY POWER DEVELOPMENT TOURIST TROPHY RACES COMPLETE WITH RACING EXHAUST SYSTEMS ① 1934 3 ½ LITRE COMP. RATIO 7.75:1 50% BENZOL 50% SHELL N⁰1 ② 1935 3 ½ LITRE COMP. RATIO 8.35:1 50% BENZOL 50% ESSO ETHYL ③ 1936 4 ¼ LITRE COMP. RATIO 9.0:1 ESSO ETHYL Y-AXIS: B H P X-AXIS: R P M INITIALS: G.T.S. | ||