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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.
  
  


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