Baldwin 2-4-2 "Columbian" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Columbia (Locobase 368)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 18, p. 176. See also James Dredge, Built by Baldwin as an experiment. Works number was 13350 in April 1893.

Named in honor of the 1893 Columbian Exposition at Chicago, this was intended to be the prototype of a new type of express passenger engine. The 2-4-2 or "Columbia" wheel arrangement met with little success in the US because of its uneasy riding qualities. Most passenger locomotives of the time were 4-4-0-s, 4-6-0s or 4-4-2s.

In 1898, the Columbia was donated to Columbia University, where it was set up in the vault between Havemeyer Hall and the Engineering Building.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID368
Number in Class1
Road Numbers13,350
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.33 / 2.23
Engine Wheelbase (ft / m)24.58 / 7.49
Ratio of driving wheelbase to overall engine wheebase 0.30
Overall Wheelbase (engine & tender) (ft / m)45 / 13.72
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)83,100 / 37,694
Engine Weight (lbs / kg)126,600 / 57,425
Tender Loaded Weight (lbs / kg)78,400 / 35,562
Total Engine and Tender Weight (lbs / kg)205,000 / 92,987
Tender Water Capacity (gals / ML)3600 / 13.64
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)69 / 34.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)84.25 / 2140
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)13" x 26" / 330x660
Low Pressure Cylinders (dia x stroke) (in / mm)22" x 26" / 559x660
Tractive Effort (lbs / kg)13,143 / 5961.57
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.32
Heating Ability
Firebox Area (sq ft / m2)128.30 / 11.92
Grate Area (sq ft / m2)24.80 / 2.30
Evaporative Heating Surface (sq ft / m2)1478 / 137.31
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1478 / 137.31
Evaporative Heating Surface/Cylinder Volume370.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4960
Same as above plus superheater percentage4960
Same as above but substitute firebox area for grate area25,660
Power L15203
Power MT276.07

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