Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 24, p. 222. Works numbers were 20370-20372 in April 1902..
Built to the same order as the two Oaxaca a Ejutla Consolidations shown in Locobase 12604, this trio went instead to another Oaxacan road, the T & H de L, which was also owned by Luis Garcia Teruel. The Mexican entrepreneur's plan to scale the Mixteca mountains was never fully realized. By 1910 he had laid 131 kilometres (81 mile) of line, but never could bridge the remaining 120-km ( 74.5-mile) distance to Huajuapan de Leon. In 1911, the railroad was renamed the San Marcos Huajuapan and in 1913 it passed into the hands of the Mexicano.
#2 was named Tepexi and #3 Acatlan and all three engines retained their numbers throughout their working lives.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Huajuapan de Leon |
| Locobase ID | 12605 |
| Railroad | Tlacotepec a Huajuapan de Leon |
| Country | Mexico |
| Whyte | 2-8-0 |
| Number in Class | 3 |
| Road Numbers | 1-3 |
| Gauge | 3' |
| Number Built | 3 |
| Builder | Burnham, Williams & Co |
| Year | 1902 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.83 / 3 |
| Engine Wheelbase (ft / m) | 16.42 / 5 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 68,000 / 30,844 |
| Engine Weight (lbs / kg) | 74,000 / 33,566 |
| Tender Loaded Weight (lbs / kg) | 44,000 / 19,958 |
| Total Engine and Tender Weight (lbs / kg) | 118,000 / 53,524 |
| Tender Water Capacity (gals / ML) | 2000 / 7.58 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 18" / 381x457 |
| Tractive Effort (lbs / kg) | 17,213 / 7807.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.95 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 109 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14 / 4.27 |
| Firebox Area (sq ft / m2) | 57 / 5.30 |
| Grate Area (sq ft / m2) | 11.30 / 1.05 |
| Evaporative Heating Surface (sq ft / m2) | 949 / 88.20 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 949 / 88.20 |
| Evaporative Heating Surface/Cylinder Volume | 257.88 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2034 |
| Same as above plus superheater percentage | 2034 |
| Same as above but substitute firebox area for grate area | 10,260 |
| Power L1 | 3622 |
| Power MT | 469.71 |