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).
Test results comparing maximum temperatures for 3-bladed and 6-bladed fans during hill climb and level running tests.
| Identifier | ExFiles\Box 75\3\ scan0165 | |
| Date | 26th November 1919 | |
| EH2/LG26.11.19. TEST 3. Contd. Hill Climb. Maximum temp: with 3-bladed fan 71°C. " " 6-bladed fan 68°C. Level running 30 M.P.H. Maximum temp: with 3-bladed fan 66°C. " " 6-bladed fan 64°C. (upside down text) R.R. 235 b (200 T) (S.F. 674. 22-5-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2376. | ||