Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 26, p. 24. Works numbers were 22686-22687 in August 1903. See also Lourdes Romero Navarete, El Rio Nazas y los derechos de agua en Mexico: conflicto y negociacion en el torno de la democracia, 1878-1939 (Hidalgo y Matamoros: Centro de Investigacion y Estudios Superiores en Antropologia Social, 2007), pp. 68-71 et seq.
Tlahualilo de Zaragoza is located due south of Texas's Big Bend and in the same latitude as the national border where it meets the Gulf. One of the key manmade features of this desert region was an irrigation canal that diverted water to its cotton fields. The CAT was founded in 1885 in the state of Durango and eventually oversaw the cultivation of 44,000 hectares (105,000+ acres) of cotton. Its output came to only slightly less than half of all the raw cotton consumed nationally by Mexican textile mills.
The locomotive was to be painted olive brown and aluminum and the tank was lettered "T y O de D".
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 3 |
Locobase ID | 11480 |
Railroad | Agricola del Tlahualilo |
Country | Mexico |
Whyte | 0-4-4T |
Number in Class | 2 |
Road Numbers | 3-4 |
Gauge | 60 cm |
Number Built | 2 |
Builder | Burnham, Williams & Co |
Year | 1903 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 3.67 / 1.12 |
Engine Wheelbase (ft / m) | 11.75 / 3.58 |
Ratio of driving wheelbase to overall engine wheelbase | 0.31 |
Overall Wheelbase (engine & tender) (ft / m) | 11.75 / 3.58 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 12,000 / 5443 |
Engine Weight (lbs / kg) | 21,000 / 9525 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 500 / 1.89 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 10 / 5 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 26 / 660 |
Boiler Pressure (psi / kPa) | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 7" x 12" / 178x305 |
Tractive Effort (lbs / kg) | 2883 / 1307.71 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.16 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 46 - 1.5" / 38 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 6.17 / 1.88 |
Firebox Area (sq ft / m2) | 20.10 / 1.87 |
Grate Area (sq ft / m2) | 3.70 / 0.34 |
Evaporative Heating Surface (sq ft / m2) | 130 / 12.08 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 130 / 12.08 |
Evaporative Heating Surface/Cylinder Volume | 245.28 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 555 |
Same as above plus superheater percentage | 555 |
Same as above but substitute firebox area for grate area | 3015 |
Power L1 | 2827 |
Power MT | 1038.74 |