Data from DeGolyer, Volume 27, p. 255. See also Carmen Páez de Salayandfa, "El Piojito: Inolvidable Leyenda en Parral", Diario de Parral, 27 Augusto 2021, archived at [], last accessed 30 October 2022. Works number was 25886 in June 1905.
See Locobase 12359 for an account of the Parral y Durango. This typical 3-ft gauge, wood-burning cabbage-stacked Consolidation enhanced the motive power of this mining railroad. Baldwin's specification mentioned ruling grades of 2% and 3 1/2%.
At some later date, it was sold to the Ingenio El Potrero as their #8.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 6 |
| Locobase ID | 12784 |
| Railroad | Parral a Durango |
| Country | Mexico |
| Whyte | 2-8-0 |
| Number in Class | 1 |
| Road Numbers | 6 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1905 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.60 / 3.23 |
| Engine Wheelbase (ft / m) | 17.94 / 5.47 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.59 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 95,000 / 43,091 |
| Engine Weight (lbs / kg) | 108,000 / 48,988 |
| Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
| Total Engine and Tender Weight (lbs / kg) | 168,000 / 76,204 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 20" / 432x508 |
| Tractive Effort (lbs / kg) | 22,109 / 10028.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.30 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 204 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.50 / 4.42 |
| Firebox Area (sq ft / m2) | 74.80 / 6.95 |
| Grate Area (sq ft / m2) | 19.63 / 1.82 |
| Evaporative Heating Surface (sq ft / m2) | 1615 / 150.09 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1615 / 150.09 |
| Evaporative Heating Surface/Cylinder Volume | 307.62 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3533 |
| Same as above plus superheater percentage | 3533 |
| Same as above but substitute firebox area for grate area | 13,464 |
| Power L1 | 4546 |
| Power MT | 421.99 |