Babcock & Wilcox 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14325)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 53, pp. 60+. Works number was 44488 in November 1916.

Even though the B & W works in Bayonne, NJ, wouldn't have been expected to offer steep grades and sharp curves, the company required that the 3 pull 220 ton short tons up a 4% grade and negotiate curves of 44 1/2 degrees (radii of 135 feet/41.1 metres). Also all windows and doors were to be "made so that they can be entirely removed in the summer. Wire screens to be provided for back windows."

Specifications by Steve Llanso of Sweat House Media
Locobase ID14325
RailroadBabcock & Wilcox
Number in Class1
Road Numbers3
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase9'
Engine Wheelbase24'
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender)24'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers117700 lbs
Engine Weight147500 lbs
Tender Light Weight
Total Engine and Tender Weight147500 lbs
Tender Water Capacity2500 gals
Tender Fuel Capacity (oil/coal)3 tons
Minimum weight of rail (calculated)65 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort27039 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.35
Heating Ability
Firebox Area115 sq. ft
Grate Area22 sq. ft
Evaporative Heating Surface1467 sq. ft
Superheating Surface
Combined Heating Surface1467 sq. ft
Evaporative Heating Surface/Cylinder Volume207.54
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3960
Same as above plus superheater percentage3960
Same as above but substitute firebox area for grate area20700
Power L13813
Power MT214.26

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