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).
List of information required on the existing water system for a Phantom II steam cooling installation.
| Identifier | ExFiles\Box 15\1\ Scan181 | |
| Date | 23th December 1929 guessed | |
| To. RM{William Robotham - Chief Engineer}- for LR{Mr Ellor} FILE UNDER RADIATORS x7259 Phantom II (Steam cooling installation) Information Required on existing water system 1. Frontal area. 2. Cooling Surface. 3. dia. & length of tubes. 4. approx. speed of air in front of tubes, thru' tubes at max. horsepower. (with fan in operation). 5. % cooling due to fan. % " due to forward motion of Car. 5a) Size of fan (dia) & speed. 6. rate of water circulation at say 95°C. without radiator in circuit.. 7. Speed at which water pump ceases to deliver. | ||