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
Classunknown
Locobase ID2540
RailroadPhiladelphia, Germantown, and Norristown
CountryUSA
Whyte4-4-0
Number in Class1
Road Numbers
GaugeStd
Number Built1
BuilderJames Brooks
Year1837
Valve GearEastwick
Locomotive Length and Weight
Driver Wheelbase (ft)
Engine Wheelbase (ft)16.45
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)8000
Weight on Drivers (lbs)16,000
Engine Weight (lbs)
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)13
Geometry Relating to Tractive Effort
Driver Diameter (in)54
Boiler Pressure (psi)90
High Pressure Cylinders (dia x stroke) (in)14" x 15.75"
Tractive Effort (lbs)4373
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.66
Heating Ability
Firebox Area (sq ft)
Grate Area (sq ft)12
Evaporative Heating Surface (sq ft)723
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)723
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 area
Power L1
Power MT