Have you ever noted the numbers on the side of the cab of UP 4014 (beneath the unit number), or on most US steam engines for that matter? If you have wondered what they mean, here you go!
4-8-8-4: The wheel arrangement of the engine
1: This unit was part of the first or of this model of steam engine
68: The diameter of the drive wheels (in inches)
24-24: Diameter of the drive cylinders in inches (first number is front cylinders, second is back)
32: Length of the stroke (in inches) of the drive cylinders
540: Weight of the unit in pounds
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