FC de Antioquia 4-6-2 Locomotives in Colombia

Class Details by Steve Llanso of Sweat House Media

Class 33 (Locobase 12691)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 54, p. 312. Works numbers were 41677-41678 in September 1914.

This rare pair brought passenger power to the Antioquia, apparently in adequate measure for these were the only two Pacifics to serve the line. They shared their boiler design with the same railway's 1913 Consolidations (Locobase 14007).

As reported in Locobase 12221, a 1921 assessment spoke skeptically of the Colombian railway system, including the original trunk lines of the FC de A. Purl Lord Bell noted that change was coming for the Antioquia, p. 296: "Plans are now under way for the building of this road from Cartagena to Medellin, the construction work to be performed by the departments of Bolivar and Antioquia in their respective territories; the Bolivar section, to go by way of El Carmen ana Monteria, is now declared national and subsidized by the National Government. The building of this railway presents an opportunity for foreign capital, because the line will pass through a producing and potentially rich cattle and agricultural region capable of great development, and also a rich mining region farther to the south in Antioquia."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID12691
RailroadFC de Antioquia
Number in Class2
Road Numbers33-34
Number Built2
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.33 / 2.23
Engine Wheelbase (ft / m)24 / 7.32
Ratio of driving wheelbase to overall engine wheelbase 0.31
Overall Wheelbase (engine & tender) (ft / m)44.26 / 13.49
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)59,000 / 26,762
Engine Weight (lbs / kg)90,000 / 40,823
Tender Loaded Weight (lbs / kg)28,000 / 12,701
Total Engine and Tender Weight (lbs / kg)118,000 / 53,524
Tender Water Capacity (gals / ML)1600 / 6.06
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)33 / 16.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40 / 1016
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x457
Tractive Effort (lbs / kg)14,631 / 6636.52
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03
Heating Ability
Tubes (number - dia) (in / mm)85 - 2" / 51
Flues (number - dia) (in / mm)12 - 5.375" / 137
Flue/Tube length (ft / m)13 / 3.96
Firebox Area (sq ft / m2)64.26 / 5.97
Grate Area (sq ft / m2)28.50 / 2.65
Evaporative Heating Surface (sq ft / m2)879 / 81.69
Superheating Surface (sq ft / m2)178 / 16.54
Combined Heating Surface (sq ft / m2)1057 / 98.23
Evaporative Heating Surface/Cylinder Volume238.76
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4845
Same as above plus superheater percentage5669
Same as above but substitute firebox area for grate area12,781
Power L18627
Power MT967.08

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