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).
The results of oil cooling tests with and without radiator shutters open.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page207 | |
| Date | 9th February 1933 | |
| To Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} From GWH.{George W. Hancock - Head Chateauroux} X 4057 Hotel de France, Chateauroux, France, 9.2.33. 3 PER. 11. We have carried out further tests in regard to cooling the oil. One gallon in the engine did not give us any reduced oil temperature. Tests with radiator shutters full open. Average temperatures. Normal running. Water 81.4 Oil 96. Shutters full open " 62.8 " 95.2 It will be seen that we do not gain anything by opening the shutters. GWH.{George W. Hancock - Head Chateauroux} | ||