Central Iron & Coal Company 2-6-2 "Prairie" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,901
RailroadCentral Iron & Coal Company
Number in Class1
Road Numbers12
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)24.75 / 7.54
Ratio of driving wheelbase to overall engine wheebase 0.40
Overall Wheelbase (engine & tender) (ft / m)48.37 / 14.74
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)98,000 / 44,452
Engine Weight (lbs / kg)134,000 / 60,781
Tender Loaded Weight (lbs / kg)70,000 / 31,752
Total Engine and Tender Weight (lbs / kg)204,000 / 92,533
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)24,118 / 10939.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Firebox Area (sq ft / m2)106 / 9.85
Grate Area (sq ft / m2)23.30 / 2.16
Evaporative Heating Surface (sq ft / m2)2378 / 220.92
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2378 / 220.92
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 area19,080
Power L16088
Power MT410.87

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