R.A.C. Trials of Commercial Vehicles
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MHE results of several trials recently 1 carried out under the open competition rules of time Royal Automobile Club have just been announced.
Morris Commercial Cars, Ltd., submitted two 30-cwt. lorries for trial, the object in each ease being to obtain records of fuel, oil and water consumption and of general reliability. In each case the trial was held over the R.A.C.'s six standard routes, and the fuel used purchased in the ordinary way.
The total distance covered by each machine was slightly in excess of 1,000 miles, In one case the vehicle ran at an average speed, exclusive of stopssiV 20.1 m.p.h., whilst in the other the average speed, exclusive of stops, was 21.8 m.p.h. On the former vehicle the fuel return showed an amount consumed of one gallon for every 19.91 miles, whilst in the other ease the comparable figure was 17.49 miles. The gross tonmileage of the first machine was 66.6, and its net ton-mileage was 32.9, the corresponding figures for the other vehicle being 58,4 and 29. The consumption of engine oil was equivalent, in the first case, to a gallon for 2,784 miles and in the second case to a gallon for 3,037 miles.
In the case of a Bean 50-ewt lorry submitted for trial, this covered a mileage of 1,005.6. The vehicle ran at an average speed, exclusive of stops, of 22.5 m.p.h., and its consumption of fuel was one gallon for every 11.48 miles run (equivalent to a gross ton-mileage of 64.87 and a net ton-mileage of 31.25).
Halley Motors, Ltd., submitted an EF2-type 5-ton lorry for trial. The vehicle covered a distance of 1,002.4
miles, the run being made at an average speed of 20.1 m.p.h. The average fuel consumption worked oiff at one gallon for every 8.24 miles covered (this being equivalent to a gross ton-mileage of 86.2 and a net ton-mileage of 50.3). No oil was added to the engine during the trial, but the quantity consumed was equivalent to one gallon for every 1,833 miles' running.
In the case of a Chevrolet lorry submitted for trial by General Motors, Ltd., the object was to demonstrate the ability of the vehicle to make six ascents and descents of the steps leading to the terraces of the Crystal Palace. The lorry was selected by the R.A.C. from a stock of 16 vehicles. Bottom gear was used in ascending the steps, and the six ascents and descents were accomplished satisfactorily.