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).
Performance tests and faults found in the radiator, bonnet, and steering column.
| Identifier | ExFiles\Box 5a\3\ 03-page033 | |
| Date | 9th February 1921 guessed | |
| -4- that the material used in weaving the core of the belt was faulty. We have since obtained a new rubber belt which has been fitted. RADIATOR & FITTINGS to LOP.E.56831 - N.B.3313. RADIATOR SHUTTERS to LOP.E.56825 - N.B.3313. Radiator Dropped 4" in Frame. E.37000 Bottom Tank. The radiator has, with an average temperature of 20°C air, kept our water temperature at an average of 80°C. We have however experienced, with an air temperature of 18°C, and a following wind, the water temperature rising to 100°C, whilst using full throttle and maximum speed. During this particular instance when the speed was decreased to 55 MPH, under the same conditions, the water temperature remained consistent at 92°C. We have not had any other instance of this recurring. The thermostatically operated shutters have given no trouble. We have had an occasion to dismantle the radiator, and it was observed that the rubber joint of the outlet had swollen up causing a 45% less diameter hole of the washer. This causes an obstruction of the passage of the water which may be detrimental to the cooling efficiency of the system. Very little water has been lost from the radiator during the mileage. We have not observed any water leaks from any part of the radiator. BONNET to LOP.E.56820 - N.B.3274. We have during the test received new bonnet sides with shutters fitted. Unfortunately the weather conditions have such that any beneficial result occurring from the use of the shutters have been nullified. We have had on one occasion, whilst travelling over a rough road a bonnet side jumping up and not returning. This was due to the spring steel clip having gone beyond the aluminium pad of the bonnet rests, and the square end would not allow the clip to return. By rounding the corner of the square end, no further trouble has occurred. The real trouble is that the pad has not been fitted centrally with the spring clip. STEERING COLUMN & BOX to LOP.F.58034. "C" TYPE. The steering has been particularly good throughout the mileage. There have been practically no joggles with the steering wheel when running over various conditions of road surfaces. The stability of the steering has been very good under normal conditions, but it is very difficult to control when strong cross winds are blowing. A small amount of slackness developed in the thrust race of the steering column which caused a slight rattle. This was made right by tightening up the race. A slight rattle has developed in the mixture controls, otherwise the steering mechanism is in very good condition. There was | ||