Manhattan Railway Company 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class L1/Suburban (Locobase 8783)

Data from digitized version of Charles Bryant Fairchild, Street Railways: Their Construction, Operation and Maintenance, (New York: Street Railway Publishing Company, World Building, 1892), pp. 209-210. See also DeGolyer, Volume 15, p. 20. Baldwin supplied three (works numbers 9813-9814, 9827) in February 1889. Boiler pressure is an estimate.

Fairchild noted that the elevated locomotives were less likely to derail if their leading truck were deleted, but the Suburban line used the "double-ender" shown here. "These have a pony truck at each end fitted with swinging bolster and radial bar so that they curve easily, and do not cut the driver flange." He adds: "The saddle tank, however, obstructs the view of the engineer somewhat, and makes the machine top heavy. This can be obviated by placing the tank and fuel box over one of the trucks [although the Suburban's tank sat squarely over the drivers.]"

The Baldwin specs stated that the firebox was to be "easily removed".

Specifications by Steve Llanso of Sweat House Media
Locobase ID8783
RailroadManhattan Railway Company
Number in Class3
Road Numbers11-13
Number Built3
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 5.50'
Engine Wheelbase17.58'
Ratio of driving wheelbase to overall engine wheebase 0.31
Overall Wheelbase (engine & tender)17.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers40000 lbs
Engine Weight60000 lbs
Tender Light Weight
Total Engine and Tender Weight60000 lbs
Tender Water Capacity600 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)33 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter48"
Boiler Pressure130 psi
Cylinders (dia x stroke)14" x 18"
Tractive Effort8122 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.92
Heating Ability
Firebox Area52.40 sq. ft
Grate Area15.90 sq. ft
Evaporative Heating Surface476 sq. ft
Superheating Surface
Combined Heating Surface476 sq. ft
Evaporative Heating Surface/Cylinder Volume148.42
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2067
Same as above plus superheater percentage2067
Same as above but substitute firebox area for grate area6812
Power L12393
Power MT263.78

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