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 carburettor air intake temperatures for Bentley radiators with shutter control versus thermostatic by-pass control.
| Identifier | ExFiles\Box 155\1\ scan0170 | |
| Date | 24th October 1934 guessed | |
| SHEET (3) BENTLEY RADIATORS COMPARISON OF AIR INTAKE TEMPERATURES WITH SHUTTER AND BY-PASS CONTROL OF WATER TEMP. CARBURETTOR AIR INTAKE TEMP. °C CAR SPEED SHUTTER CONTROL THERMOSTATIC BY-PASS CONTROL EQUAL TOP WATER TEMPS. IN EACH CASE 40 M.P.H FULL THROTTLE 84 M.P.H FULL THROTTLE | ||