Central Iron & Coal Company 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 12 (Locobase 13901)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 53. See also Locobase 7310 for a note on the use of convict labor on the TCI system. Works number was 38403 in September 1912.

Although derived from the same low-drivered Prairie design sold to the St Louis Water Works in 1910 (Locobase 13692), the 12 had a bigger grate. Its heating proportions retained the weird imbalance between a small firebox and grate and the much larger boiler.

Later worked for TCI (Tennessee Coal, Iron & Railroad) and was still on the road in 1942.

Specifications by Steve Llanso of Sweat House Media
Class12
Locobase ID13901
RailroadCentral Iron & Coal Company
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers12
GaugeStd
Number Built1
BuilderBaldwin
Year1912
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase10'
Engine Wheelbase24.75'
Ratio of driving wheelbase to overall engine wheebase 0.40
Overall Wheelbase (engine & tender)48.37'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers98000 lbs
Engine Weight134000 lbs
Tender Light Weight70000 lbs
Total Engine and Tender Weight204000 lbs
Tender Water Capacity3500 gals
Tender Fuel Capacity (oil/coal)6 tons
Minimum weight of rail (calculated)54 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)17" x 24"
Tractive Effort24118 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Firebox Area106 sq. ft
Grate Area23.30 sq. ft
Evaporative Heating Surface2378 sq. ft
Superheating Surface
Combined Heating Surface2378 sq. ft
Evaporative Heating Surface/Cylinder Volume377.16
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4194
Same as above plus superheater percentage4194
Same as above but substitute firebox area for grate area19080
Power L16088
Power MT410.87


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