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 readings, cooling system issues, and recommendations for improvements.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan130 | |
| Date | 9th July 1930 | |
| -6- Average Water. Temp. 82°C. Max. Air Temp. 28°C. Average Air Temp. 25°C. We will ask C.W.Hancock to specify exactly what conditions raise the maximum water temperature 18°C. above the average whilst the air temperature only rises 3°C. Incidentally, one of the old standard Whittle fan belts is being run on 24-TX. We are sending one of the new belts out as soon as we can obtain a fresh supply. We think it is wrong to condemn the cooling system of the car because the Daily Report shows 100°C. as having been reached, because it may only have been attained momentarily without loss of water. Our recommendations for improvement are - (1) Improved fan belt. Standardisation sheet circulated. We are so dependant on this that we think the drive might receive design consideration. (2) Improved autovac with larger drop valve. Standardisation sheet issued. (3) Four bonnet shutters fitted as standard. Standardisation sheet issued. We consider that the radiator outlet might with advantage be improved. It would be valuable as the freedom of the matrix became reduced in service. It is apparent that the carburation suffers from the high temperatures under the bonnet. It is certain that the fuel in the autovac reaches 80°C. with quite reasonable/temperatures. After a burst of speed the slow running is most erratic. We recommend that as further design work is being carried out on the fuel system, an endeavour should be made to carry | ||