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 from Harrison Radiator Corporation discussing radiator cooling, air consumption, and enclosed test results.
| Identifier | ExFiles\Box 149a\3\ scan0153 | |
| Date | 6th January 1936 | |
| hs{Lord Ernest Hives - Chair}/pm. X1278 STD noted hs{Lord Ernest Hives - Chair}/STD HARRISON RADIATOR CORPORATION LOCKPORT, NEW YORK. Jan. 6th 1936. Dict.1/3/36. Mr B.I.Day., Engineering Department, Rolls-Royce Limited. Derby, Derbyshire, England. Dear Mr Day, You will recollect that upon the occasion of your visit here, among other things discussed was the air consumption of radiators and their relation to cooling, particularly if the car to be cooled has an air restriction, either in front of or behind the radiator. Enclosed you will find two curves which show the effect of air gaps on cooling and air consumption. On the cooling curve you will note that at 60 miles per hour there is a maximum difference of about 60 B.T.U. between the three cores tested, whereas on the air flow curves there is an appreciable difference in the air flow between the three cores. Enclosed also are some figures taken from tests on a Chevrolet car with a low and a high air flow radiator respectively. In this particular instance you will note that the low air flow radiator runs cooler on the car than on the high air flow radiator. It is thought that perhaps a radiator tailored to fit your particular car may give better cooling without an increase in weight or physical dimensions than the type of core you are now using. We enjoyed very much indeed your visit over here, and if you are in this country again at any time, we will be very pleased indeed to see you. With kindest personal regards to you and Mr Robotham, remain, Yours very truly, HARRISON RADIATOR CORPORATION. L.P.Saunders, Director of Engineering. | ||