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).
Letter to The Harrison Radiator Corporation regarding radiator development and air temperature figures for the Phantom III car.
| Identifier | ExFiles\Box 149a\3\ scan0184 | |
| Date | 21th September 1936 | |
| X1278 Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Std.19/KW. 21st September, 1936. L.P. Saunders, Esq., The Harrison Radiator Corporation, Lockport, New York, U.S.A. Dear Mr. Saunders, We have received your letter of August 18th, and would like to thank you for the encyclopaedic amount of information therein, particularly in the enclosed copy of your paper on "Radiator Development and Car Cooling". Regarding the critical air temperature figures for the Phantom III car, we are at a loss to understand why you have not had these figures, as a copy of same should have been included with our letter, and is in fact included with our file copy of same. However, we are sending you these figures on attached sheet, together with some test figures taken at Brooklands, which bear out your remarks about cowls. The speeds at which we measure these critical air temperatures; i.e., 40 M.P.H. and full speed, have been chosen because we consider them to represent the worst conditions likely to be met in service. Of course, as you point out, your 20 M.P.H. full throttle test represents an even more severe condition. | ||