Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 49, p. 93. Works number was 38970 in December 1912.
The American Smelting and Refining Company (ASARCO) acquired the National Metallurgical Company (headquartered in Matehuala in Cobriza State) in 1910, which owned the Tiro General, a processing company located in Charcas in San Luis Potosi State. This Mogul traveled the 15 kilometres (9.3 miles) between Charcas and Los Charcos on 56 lb/yard (28 kg/metre) rail around 18 degree curves, and up 2% grades.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 101 |
| Locobase ID | 14185 |
| Railroad | Central of Potosi |
| Country | Mexico |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 101 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1912 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 18.25 / 5.56 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
| Overall Wheelbase (engine & tender) (ft / m) | 49.83 / 15.19 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 108,000 / 48,988 |
| Engine Weight (lbs / kg) | 123,000 / 55,792 |
| Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
| Total Engine and Tender Weight (lbs / kg) | 213,000 / 96,615 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2000 / 7570 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 60 / 30 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 24" / 483x610 |
| Tractive Effort (lbs / kg) | 26,512 / 12025.66 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.07 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 260 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.98 / 3.35 |
| Firebox Area (sq ft / m2) | 145 / 13.47 |
| Grate Area (sq ft / m2) | 22.20 / 2.06 |
| Evaporative Heating Surface (sq ft / m2) | 1628 / 151.30 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1628 / 151.30 |
| Evaporative Heating Surface/Cylinder Volume | 206.60 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3996 |
| Same as above plus superheater percentage | 3996 |
| Same as above but substitute firebox area for grate area | 26,100 |
| Power L1 | 4479 |
| Power MT | 274.29 |