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).
Engine cooling performance under idling and full speed conditions, and a maximum lap speed for car 37-EX.
| Identifier | ExFiles\Box 155\1\ scan0284 | |
| Date | 8th June 1937 guessed | |
| -2- 4. Under idling conditions the temperature drop across the radiator is approximately 5°C. while under full speed conditions it is approximately 17°C. indicating that we cannot gain much by increasing the water flow at low speeds but could gain at high speeds. 5. An improvement under idling conditions is obtained by increasing the idling speed - the higher the engine speed the better the cooling. 6. Maximum lap speed obtained to date on 37-EX. 85.7. M.P.H. Rm{William Robotham - Chief Engineer}/STD. | ||