Columbia, Newberry & Northern 4-4-0 "American" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID12,900
RailroadColumbia, Newberry & Northern
Number in Class1
Road Numbers1
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)21.75 / 6.63
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)47,000 / 21,319
Engine Weight (lbs / kg)77,000 / 34,927
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2200 / 8.33
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 1422
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x610
Tractive Effort (lbs / kg)12,123 / 5498.91
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.88
Heating Ability
Firebox Area (sq ft / m2)103.73 / 9.64
Grate Area (sq ft / m2)15.50 / 1.44
Evaporative Heating Surface (sq ft / m2)1166 / 108.36
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1166 / 108.36
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 area13,485
Power L13660
Power MT343.36

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