It was designed to be the best locomotive that Baldwin ever made. It has three cylinders, weighs about 350 short tons (318 t; 313 long tons), including tender, and can pull a load of up to 7,000 short tons (6,400 t; 6,200 long tons). Its top speed is 70 mph (110 km/h).[citation needed]
60000 was highly innovative, carrying unusual technology such as a water-tube firebox. This was intended to improve efficiency but the tubes were prone to burst inside the firebox. It is also a compound, expanding the steam once in the inside cylinder and then again in the two outside cylinders. Although compounding increases efficiency, it was an extra complication that the US railroads had mostly rejected by the middle twenties.[3] The weight and length of the engine were too much for all but the heaviest and straightest tracks.
This locomotive was experimental and was meant to be the model for future development. However, its demonstration runs never persuaded railroads to purchase more. In 1933, it was donated to the Franklin Institute Science Museum in Philadelphia, Pennsylvania[1] and remains there today.