The Pamphlet Collection of Sir Robert Stout: Volume 8
Results of the Trials
Results of the Trials.
Total distance run.—In the course of these trials a total length of about 1,000 miles was run, and during the whole time the engine worked most satisfactorily, without exhibiting any defect worth mentioning.
Longest run.—The greatest length passed over in a single trial was 28½ miles.
Speed.—In respect of speed it was found that the car was quite able to keep pace with the mixed train from Loosen, on the Dresden and Berlin Railway, a distance of 19¼ miles.page 14
Consumption of Fuel.—The engine used about 7 lbs. of fuel per mile.
Water.—It ran about 9¼ miles without taking water.
Firing.—It ran about 7½ miles without fresh fuel being required on the fire.
Traction.—On a gradient of 1 in 40 the car, in addition to its own weight, drew up a loaded waggon weighing about 15 tons. On a level the car drew seven partially laden railway waggons, weighing in all about 85 tons.
Grades.—The car ascended with ease a gradient of 1 in 20, on a curve of 314 feet radius, 722 feet long.
Curves.—The sharpest curve passed over had a radius of 50 feet.
Brake Power.—In descending a gradient in 1 in 200, with a speed of 19 miles an hour, the car was stopped in nine seconds. On a level it was stopped by signal in four seconds in a length of 17 feet. When the speed was limited to that of the common street tramways, 10 miles per hour, about one-half of the above time and space were occupied in stopping. The engineman had no difficulty in stopping and starting the car on the steep gradient of 1 in 20.
The engine worked throughout almost noiselessly, without perceptible smoke or steam, the latter being completely condensed.
The whole of the trials. took place under the management of Officers, detailed for that purpose, from the Royal Railway Regiment, and the car was throughout worked only by the men belonging to that Regiment.
The above results are collected and attested by the Royal Railway Regiment of Prussia.*
* In some of the above particulars still better results have since been obtained.—F. C. R.