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).
Performance of different radiator types for Phantom II Cooling.
| Identifier | ExFiles\Box 16\2\ Scan023 | |
| Date | 8th July 1931 | |
| S/W To Hs.{Lord Ernest Hives - Chair} from Sg.{Arthur F. Sidgreaves - MD} re P.II Cooling. Sg{Arthur F. Sidgreaves - MD}8/EB.7.31 I was very much interested to see in Hancock's report that the radiator with the large hexagon American tubes doesnot produce the margin of safety we were hoping for with an atmospheric temperature of 30°C. I shall await with interest the report on the small tubed radiator which from your Hs{Lord Ernest Hives - Chair}18/MJ.6.7.31 I gather he will be testing very shortly. Sg.{Arthur F. Sidgreaves - MD} [Handwritten]: 87250. [Stamp]: RECEIVED 1931 JUL 9 | ||