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 J.S.Inskip Inc. in New York regarding overheating issues in traffic and proposed solutions.
| Identifier | ExFiles\Box 174\2\ img209 | |
| Date | 17th August 1937 | |
| Rm.{William Robotham - Chief Engineer}18/AP. August 17th 1937. H.Adkins Esq., J.S.Inskip Inc., 10 East 57th Street, NEW YORK, U.S.A. Dear Adkins, It was nice to hear from you. We have had a certain amount of over-heating in traffic. This has been divided into two sections- (1) Some of the original matrices were incorrectly made: the water spaces in the top layer were too small and they quickly got choked up. We have had to replace several of these matrices. Probably any Service Station which deals with Harrison Radiators could put one of these defective radiators right for you. If the car is perfectly alright when driven fast with atmospheric temperature up to 30°C. then you can assume that the radiator is not choked up. (2) If the car is alright at high speeds but boils in traffic atmospheric temperatures of above 25°C., then the fault does not lie with the radiator. It is due to the fan speed being too low for this kind of work. We have produced special fans with a slightly higher speed which are being fitted in England in cases of complaint. We will ensure that you have a supply of these parts before next summer. In the meantime if you have someone who is in a hot climate your only solution is to fit a high speed pulley and a heavier fan belt. One annoying feature with the Phantom III, is that whilst the steam valve enables the radiator temperature to go up to 105°C without water being lost, the customer thinks he is boiling when the thermometer reaches 100°C. We have produced a new thermometer in which a red mark takes the place of any figures after 90°C. which overcomes this trouble. continued | ||