Data from DeGolyer, Vol 54, pp. 304. Works number was 41307 in April 1914.
Yglesia, Lobo & Company bought this tiny double-ender tank to run on 30 lb/yard (15 kg/metre) rail and scale 2 1/2% grades.
Data from DeGolyer, Vol 54, pp. 308. See also Gabriel Poveda, "El Ferrocarril de Caldas", DYNA 70, Nro 139, pp. 139 (Medellin, Colombia: Julio de 2003) at []. Works number was 42964 in February 1916.
Ordered by broker Meckle & Company, this engine was similar to the Cucuta saddle-tank double-ender bought two years earlier (Locobase 14500). Like the Tonchala, this wood-burner also was to run "forward and backward."
The specs give a good outline of the railway on which the Zapata (named for civil engineer Felipe Zapata Cuenca) was to operate. It would be 75 miles (121 km) long when completed and use 55 lb/yard (27.5 kg/metre) rail. As it climbed out of the valley of the Rio Cauaca toward Pereira (1920), Villamaria (1925), and Manizales (1927), the line's maximum grade would reach 3% and curves would have radii as tight as 236 feet (71.9 metres) or 24 degrees. Water tanks were spaced 10 1/2 miles (16.9 km) apart. Also, "Locomotive to work at altitude of 6,500 feet [1,981 metres] above sea level." And the Radley & Hunter stack and spark arrestor were "to be efficient to avoid fires."
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | Tonchala | Zapata |
Locobase ID | 14500 | 14501 |
Railroad | FC de C+cuta | FC de Caldas |
Country | Colombia | Colombia |
Whyte | 2-4-2ST | 2-4-2ST |
Number in Class | 1 | 1 |
Road Numbers | 17 | 1 |
Gauge | Metre | 3' |
Number Built | 1 | 1 |
Builder | Baldwin | Baldwin |
Year | 1914 | 1916 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 4.50 / 1.37 | 4.50 / 1.37 |
Engine Wheelbase (ft / m) | 15.83 / 4.82 | 15.83 / 4.82 |
Ratio of driving wheelbase to overall engine wheelbase | 0.28 | 0.28 |
Overall Wheelbase (engine & tender) (ft / m) | 15.83 / 4.82 | 15.83 / 4.82 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 17,000 / 7711 | 19,000 / 8618 |
Engine Weight (lbs / kg) | 28,000 / 12,701 | 30,900 / 14,016 |
Tender Loaded Weight (lbs / kg) | ||
Total Engine and Tender Weight (lbs / kg) | 28,000 / 12,701 | 30,900 / 14,016 |
Tender Water Capacity (gals / ML) | 400 / 1.52 | 400 / 1.52 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 14 / 7 | 16 / 8 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 37 / 940 | 37 / 940 |
Boiler Pressure (psi / kPa) | 150 / 1030 | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 12" / 203x305 | 8" x 12" / 203x305 |
Tractive Effort (lbs / kg) | 2646 / 1200.21 | 2646 / 1200.21 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.42 | 7.18 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 56 - 1.75" / 44 | 56 - 1.75" / 44 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 7.35 / 2.24 | 7.35 / 2.24 |
Firebox Area (sq ft / m2) | 30.40 / 2.82 | 30 / 2.79 |
Grate Area (sq ft / m2) | 5.60 / 0.52 | 4.70 / 0.44 |
Evaporative Heating Surface (sq ft / m2) | 217 / 20.16 | 216 / 20.07 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 217 / 20.16 | 216 / 20.07 |
Evaporative Heating Surface/Cylinder Volume | 310.83 | 309.40 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 840 | 705 |
Same as above plus superheater percentage | 840 | 705 |
Same as above but substitute firebox area for grate area | 4560 | 4500 |
Power L1 | 4889 | 4849 |
Power MT | 1268.05 | 1125.28 |