Columbia, Newberry & Northern 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Columbia (Locobase 12900)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 201 Works numbers were 10869-10870 in May 1890 and 11113 in August.

An urgent need for a railroad to serve local needs in the Uplands of South Carolina led to the incorporation of this line in 1885. It began construction in 1890 and by July 1891 had reached Dover Junction. Acquisition of the small Laurens Railroad completed the 75 mile route in 1896. Towns like Little Mountain (now on the National Register of Historic Places) and Irmo (a name formed by combining the first two letters of CJ Iredell and HC Moseley) quickly grew along the route.

NB: Heating surface data is an estimate based on Locobase 9353, a Georgia Carolina & Northern order that had identical tube counts, diameters, and lengths (within 3/16") as well as identical firebox dimensions.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12900
RailroadColumbia, Newberry & Northern
Number in Class1
Road Numbers1
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase8'
Engine Wheelbase21.75'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers47000 lbs
Engine Weight77000 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity2200 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)39 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"
Boiler Pressure130 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort12123 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88
Heating Ability
Firebox Area103.73 sq. ft
Grate Area15.50 sq. ft
Evaporative Heating Surface1166 sq. ft
Superheating Surface
Combined Heating Surface1166 sq. ft
Evaporative Heating Surface/Cylinder Volume208.77
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2015
Same as above plus superheater percentage2015
Same as above but substitute firebox area for grate area13485
Power L13660
Power MT343.36

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