Bradley Contracting Company 0-4-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 15030)

Data from Roy V Wright (Ed.) 1912 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1912), p. 154. Works numbers were 1178-1179 in May 1912.

Bradley Contracting helped build many of the subway lines in New York City.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15030
RailroadBradley Contracting Company
Number in Class1
Road Numbers2
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)6 / 1.83
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)6 / 1.83
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)62,500 / 28,350
Engine Weight (lbs / kg)62,500 / 28,350
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)62,500
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x457
Tractive Effort (lbs / kg)12,210 / 5538.37
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.12
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)53 / 4.92
Grate Area (sq ft / m2)10.15 / 0.94
Evaporative Heating Surface (sq ft / m2)537 / 49.89
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)537 / 49.89
Evaporative Heating Surface/Cylinder Volume193.86
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1726
Same as above plus superheater percentage1726
Same as above but substitute firebox area for grate area9010
Power L12953
Power MT208.33

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Wes Barris