Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p. 244. See also Mariano Tellez Pizarro, Breves Apuntos Historicos sobre las Ferrocarriles de la Republica Mexicana (, Mexico-A Geographical Sketch (Mexico City: Tipographia de la Direccion General de Telegraphos, 1906), p. 26-27). Works number was 25839 in June 1905.
A government-authorized concession granted on 2 February 1878 marked the origin of the H y N, a narrow-gauge line that eventually covered 209.7 km (130 miles). Tellez Pizarro commented that this railway was financed in Mexico and subsidized in part by the Mexican Government. It consisted of six short segments (the longest measuring 74.3 km (46 miles), but provided "very important" links to those six railways.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Huauchinango |
| Locobase ID | 12777 |
| Railroad | Hidalgo y Nordeste |
| Country | Mexico |
| Whyte | 4-6-0 |
| Number in Class | 1 |
| Road Numbers | 26 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1905 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 19.42 / 5.92 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.51 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 47,000 / 21,319 |
| Engine Weight (lbs / kg) | 64,000 / 29,030 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| 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) | 26 / 13 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 20" / 381x508 |
| Tractive Effort (lbs / kg) | 14,344 / 6506.34 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.28 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 128 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.67 / 3.56 |
| Firebox Area (sq ft / m2) | 74.20 / 6.90 |
| Grate Area (sq ft / m2) | 12.32 / 1.14 |
| Evaporative Heating Surface (sq ft / m2) | 860 / 79.93 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 860 / 79.93 |
| Evaporative Heating Surface/Cylinder Volume | 210.27 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2218 |
| Same as above plus superheater percentage | 2218 |
| Same as above but substitute firebox area for grate area | 13,356 |
| Power L1 | 4334 |
| Power MT | 609.88 |