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Pennsylvania Railroad No. 20 (Front)
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PRR Class 8-28d Mogul – Key Specifications:
Wheel arrangement: 2-6-0 (Mogul type)
Builder: Burnham, Perry, Williams & Company, (Baldwin Locomotive Works), Philadelphia, Pennsylvania
Driver diameter: ~56 inches
Cylinders: 2, external
Cylinder dimensions: 19 in × 24 in
Boiler pressure: ~140–160 psi (varied by subclass)
Tractive effort: ~22,000 lbf (approximate)
Valve gear: Stephenson (typical for era)
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