Philadelphia, Germantown, and Norristown 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 2540)

Designed by the Philadelphia, Germantown, and Norristown's Henry Campbell. White (1968) notes that this engine, "a giant for the times", could pull a 450-ton train on level ground at 15 mph. Although it was the first to have the "American" wheel arrangement, its suspension was far too rigid and it was rough on the track. It later went to the Long Island Railroad.

Specifications by Steve Llanso of Sweat House Media
Locobase ID2540
RailroadPhiladelphia, Germantown, and Norristown
Number in Class1
Road Numbers
Number Built1
BuilderJames Brooks
Valve GearEastwick
Locomotive Length and Weight
Driver Wheelbase
Engine Wheelbase16.45'
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)8000 lbs
Weight on Drivers16000 lbs
Engine Weight
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)13 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter54"
Boiler Pressure90 psi
Cylinders (dia x stroke)14" x 15.75"
Tractive Effort4373 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.66
Heating Ability
Firebox Area
Grate Area12 sq. ft
Evaporative Heating Surface723 sq. ft
Superheating Surface
Combined Heating Surface723 sq. ft
Evaporative Heating Surface/Cylinder Volume257.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1080
Same as above plus superheater percentage1080
Same as above but substitute firebox area for grate area0
Power L10
Power MT0

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