Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 25, p.297. Works number was 22479 in July 1903.
Camelback designs often were used to provide the enormous grate used to burn anthracite culm. In the case of this single Consolidation, the fuel was "Poor coal, 20 to 24 per cent ash.", a low-calorie source that had similar requirements - light draft and thin bed. Hence the use of the big firebox. Some time later, the Durango Central herald was applied to the tender; Locobase doesn't know if it was a sale or the result of a consolidation of railways. DM&S extracted copper ore in decreasing quantities in the first decade of the 1900s.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 102 |
| Locobase ID | 12686 |
| Railroad | Descubridora Mining & Smelting |
| Country | Mexico |
| Whyte | 2-8-0 |
| Number in Class | 1 |
| Road Numbers | 102 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1903 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.58 / 4.14 |
| Engine Wheelbase (ft / m) | 21.58 / 6.58 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 130,000 / 58,967 |
| Engine Weight (lbs / kg) | 145,000 / 65,771 |
| Tender Loaded Weight (lbs / kg) | 120,000 / 54,431 |
| Total Engine and Tender Weight (lbs / kg) | 265,000 / 120,202 |
| Tender Water Capacity (gals / ML) | 6000 / 22.73 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 180 / 12.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21" x 26" / 533x660 |
| Tractive Effort (lbs / kg) | 35,086 / 15914.76 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.71 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 300 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.15 / 4.01 |
| Firebox Area (sq ft / m2) | 176.25 / 16.38 |
| Grate Area (sq ft / m2) | 78 / 7.25 |
| Evaporative Heating Surface (sq ft / m2) | 2228 / 207.06 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2228 / 207.06 |
| Evaporative Heating Surface/Cylinder Volume | 213.82 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 14,040 |
| Same as above plus superheater percentage | 14,040 |
| Same as above but substitute firebox area for grate area | 31,725 |
| Power L1 | 4476 |
| Power MT | 303.63 |