Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 44, p. 235. Works numbers were 39457-39458 in March 1913.
These small superheated, wood-burning Consolidations provided useful power to this high-altitude railway. The specs alerted the builder to the maximum grades of 4 1/2%, minimum radii of 70 metres (230 ft), and truly skinny rails weighing 45 lb/yard (22.5 kg/metre).
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 24, p. 159. See also Carlos A Mejias, "La controversia tecnica en la segunda mitad del siglo XIX en Colombia: Los ferrocarriles y el ancho de la trocha," paper presented at the IV Congreso Latinoamericano de Historia de last Ciencias y la Tecnologia, Cali, Colombia, 24-27 January 1995. Works numbers were 19990-19991 in January 1902.
Locobase 12189 notes the challenging profile of the railroad that awaited this pair of Consolidations. Six years after the delivered the small tank locomotive described in that entry, the fuel was still characterized as "very poor wood" and the twists and grades still posed significant obstacles to hauling freight.
In the paper cited above, Mejias reports that Alejandro Lopez, an engineer he describes as "a visionary", specifically criticized this design as a "technical fiasco". An effort to bring the center of gravity as low as possible did in fact reduce derailments, he noted, but the engines were retired early because their wheels beat the lightly built track mercilessly by pounding on the inside faces of the rails
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | 25 | 9 |
Locobase ID | 14007 | 12588 |
Railroad | FC de Antioquia | FC de Antioquia |
Country | Colombia | Colombia |
Whyte | 2-8-0 | 2-8-0 |
Number in Class | 2 | 2 |
Road Numbers | 25, 29 | 9-10 |
Gauge | 3' | 3' |
Number Built | 2 | 2 |
Builder | Baldwin | Burnham, Williams & Co |
Year | 1913 | 1902 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 9 / 2.74 | 9 / 2.74 |
Engine Wheelbase (ft / m) | 16.50 / 5.03 | 15.92 / 4.85 |
Ratio of driving wheelbase to overall engine wheelbase | 0.55 | 0.57 |
Overall Wheelbase (engine & tender) (ft / m) | 40.79 / 12.43 | 40.58 / 12.37 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 74,000 / 33,566 | 74,500 / 33,793 |
Engine Weight (lbs / kg) | 83,000 / 37,648 | 83,500 / 37,875 |
Tender Loaded Weight (lbs / kg) | 38,000 / 17,237 | 37,000 / 16,783 |
Total Engine and Tender Weight (lbs / kg) | 121,000 / 54,885 | 120,500 / 54,658 |
Tender Water Capacity (gals / ML) | 1600 / 6.06 | 1500 / 5.68 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 31 / 15.50 | 31 / 15.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 34 / 864 | 34 / 864 |
Boiler Pressure (psi / kPa) | 180 / 1240 | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 18" / 381x457 | 15" x 18" / 381x457 |
Tractive Effort (lbs / kg) | 18,225 / 8266.73 | 18,225 / 8266.73 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.06 | 4.09 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 85 - 2" / 51 | 170 - 2" / 51 |
Flues (number - dia) (in / mm) | 12 - 5.375" / 137 | |
Flue/Tube length (ft / m) | 13 / 3.96 | 13.04 / 3.97 |
Firebox Area (sq ft / m2) | 78 / 7.25 | 72.90 / 6.78 |
Grate Area (sq ft / m2) | 15.20 / 1.41 | 18.75 / 1.74 |
Evaporative Heating Surface (sq ft / m2) | 871 / 80.92 | 1226 / 113.94 |
Superheating Surface (sq ft / m2) | 178 / 16.54 | |
Combined Heating Surface (sq ft / m2) | 1049 / 97.46 | 1226 / 113.94 |
Evaporative Heating Surface/Cylinder Volume | 236.58 | 333.01 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 2736 | 3375 |
Same as above plus superheater percentage | 3201 | 3375 |
Same as above but substitute firebox area for grate area | 16,427 | 13,122 |
Power L1 | 7932 | 4407 |
Power MT | 945.25 | 521.65 |