Alexander & Rich Mountain 2-4-2 "Columbian" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class W G Warden (Locobase 12023)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 17, p. 242. Works number was 12517 in March 1892.

Bought by the Alexander Boom & Lumber Company, this little tank operated on the A & RM. It was sold first to Panther Lumber and later to the W M Ritter Lumber Company in 1913

Specifications by Steve Llanso of Sweat House Media
ClassW G Warden
Locobase ID12,023
RailroadAlexander & Rich Mountain
CountryUSA
Whyte2-4-2T
Number in Class1
Road Numbers
Gauge3'
Number Built1
BuilderBurnham, Williams & Co
Year1892
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)18.50 / 5.64
Ratio of driving wheelbase to overall engine wheebase 0.27
Overall Wheelbase (engine & tender) (ft / m)18.50 / 5.64
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)28,000 / 12,701
Engine Weight (lbs / kg)42,000 / 19,051
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)42,000
Tender Water Capacity (gals / ML)750 / 2.84
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 965
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)5630 / 2553.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.97
Heating Ability
Firebox Area (sq ft / m2)49.12 / 4.57
Grate Area (sq ft / m2) 7.20 / 0.67
Evaporative Heating Surface (sq ft / m2)307 / 28.53
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)307 / 28.53
Evaporative Heating Surface/Cylinder Volume174.44
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation936
Same as above plus superheater percentage936
Same as above but substitute firebox area for grate area6386
Power L12585
Power MT407.07