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).
Temperature tests conducted at Brooklands to determine the effect of various car alterations on radiator, seat, and oil temperatures.
| Identifier | ExFiles\Box 29\3\ Scan170 | |
| Date | 12th September 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to OY. TEMPERATURE TESTS - BROOKLANDS. These tests were conducted to dertermine the effect of various alterations to the car on the radiator temp., front and rear seat temperature and oil temperature. Summarising the results :- (a) Louvred bonnet v.{VIENNA} shutters. Louvres are more efficient than shutters at high speeds, reducing the maximum radiator temperature by some 5°C. (b) Plain v.{VIENNA} louvred bonnet. With a plain bonnet the radiator temperature is 20°C higher at maximum speeds than with a louvred bonnet. The oil temperature is some 10°C higher and the front seat temperature rises to 40°C at quite a normal atmospheric temp. (3) Cutout closed v.{VIENNA} cutout open. This reduces the temperatures all round by an appreciable amount but does not affect the rear seat running temperature as much as one would expect. (d) Removal of tail. This has a slight effect on the running temp. of the rear seats. The effect is more pronounced when the car is standing after a fast run, the tail appearing to retain the heat somewhat. (e) Removal of undershield. This has only a slight effect on radiator front and rear seats but an appreciable effect on the oil temp., which is about 10°C higher with the undershield in position. (f) Silencer shield. This appears to be the main factor in keeping the rear seats cool. It is noticeable that the temperature contd:- | ||