FC de Antioquia 2-6-0 Locomotives in Colombia


Class Details by Steve Llanso of Sweat House Media

Class Cock Bayer (Locobase 12189)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 108, Volume 27, p. 6; and Volume 28, p. 73. Works numbers were 14766 in March 1896, 24088 in April 1904, 25960 in July 1905, 30037 in January 1907, and 32082 in October.

Other than the lower 150-psi rating of the 1896 Cock Bayer, these three Moguls registered identical values in all of the important measurements. The 1904 engine was named Fabriciano Botero (11), which was followed by the Cisneros (#12), Zea (14), and Girardot (15).


Class Liborial Mejia (Locobase 13730)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 39, p. 281.Works numbers were 37525-37526 in February 1912.

The purchase of this pair came through a New York brokerage - Camacho Roldan & Van Sickel.

Specs reported that the rail weight was 25 kg/metre (50 lb/yard), maximum uncompensated grade a mere 2%, but minimum curve radius a tight 70 metres (230 ft).

Notes in the specs show that no design was perfectly suited: "Company desires ample clearance between frames and spring hangers, they claim none of their present engs [sic] have sufficient. [sic]" And a 16 May 1914 letter cautions: "Allow sufficient space between engine frame and ash pan to avoid overheating of frame, also make bottom sheet of ash pan stronger. Make tender casting deeper so as to prevent it climbing on top of engine casting."

A feature not often prescribed was a "rail washer to be placed at the front of the truck provided with discharge tubes (nozzles) in the form of a fan, for the purpose of washing the rails, even on curves as sharp as 70 metres radius, steam to taken from above the water line. Rail washer hose to be of the best quality."


Class T Arturo Acevedo (Locobase 12690)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 36, p. 252. Works numbers were 33413 in May 1909 and 35633-35635 in December 1910.

The Antioquia apparently was satisfied with the general size and layout of the Baldwins it had already bought (See Locobase 12690, e.g.). So when they returned to the Philadelphia builder in 1909, the railway specified a slightly larger boiler pressed to a slightly higher degree. Because the cylinder volume remained the same, steam reserves increased beyond an already adequate level. Weights rose a bit too.

T Arturo Acevedo was delivered first, 18 months before Berrio, Zea, and Girardot. The latter three were ordered through Roldan & Van Sickel.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassCock BayerLiborial MejiaT Arturo Acevedo
Locobase ID12189 13730 12690
RailroadFC de AntioquiaFC de AntioquiaFC de Antioquia
CountryColombiaColombiaColombia
Whyte2-6-02-6-02-6-0
Number in Class524
Road Numbers7, 11-12, 14-1523-2416, 20-22
Gauge3'3'3'
Number Built524
BuilderBurnham, Williams & CoBaldwinBaldwin
Year189619111909
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.25 / 2.218 / 2.44 7.25 / 2.21
Engine Wheelbase (ft / m)13.92 / 4.2415.33 / 4.6714.42 / 4.40
Ratio of driving wheelbase to overall engine wheelbase 0.52 0.52 0.50
Overall Wheelbase (engine & tender) (ft / m)36.78 / 11.2138.79 / 11.82
Axle Loading (Maximum Weight per Axle) (lbs / kg)22,046 / 10,000
Weight on Drivers (lbs / kg)44,990 / 20,40764,000 / 29,03054,000 / 24,494
Engine Weight (lbs / kg)53,790 / 24,39973,000 / 33,11263,000 / 28,576
Tender Loaded Weight (lbs / kg)28,000 / 12,70138,000 / 17,23740,000 / 18,144
Total Engine and Tender Weight (lbs / kg)81,790 / 37,100111,000 / 50,349103,000 / 46,720
Tender Water Capacity (gals / ML)1600 / 6.061600 / 6.061600 / 6.06
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.5036 / 1830 / 15
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 94040 / 101637 / 940
Boiler Pressure (psi / kPa)160 / 1240170 / 1170165 / 1140
High Pressure Cylinders (dia x stroke) (in / mm)14" x 18" / 356x45715" x 18" / 381x45714" x 18" / 356x457
Tractive Effort (lbs / kg)12,968 / 5882.1914,631 / 6636.5213,373 / 6065.90
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.47 4.37 4.04
Heating Ability
Tubes (number - dia) (in / mm)109 - 2" / 51152 - 2" / 51141 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.87 / 3.6213 / 3.9612.25 / 3.73
Firebox Area (sq ft / m2)52.26 / 4.8677 / 7.1558 / 5.39
Grate Area (sq ft / m2)11 / 1.0217.30 / 1.6112.20 / 1.13
Evaporative Heating Surface (sq ft / m2)725 / 67.381099 / 102.10956 / 88.85
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)725 / 67.381099 / 102.10956 / 88.85
Evaporative Heating Surface/Cylinder Volume226.06298.52298.09
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation176029412013
Same as above plus superheater percentage176029412013
Same as above but substitute firebox area for grate area836213,0909570
Power L1303445683953
Power MT446.02472.06484.16

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