Data from Catalogue 10036--Locomotives for Export (New York City, April 1910), pp. 84-85. See also Manuel Schwarz, "Coal Mines of Mexico", Mines and Minerals, Volume 29, No 8 (August 1908), p. 33. Works number was 44442 in August 1907.
The Sabinas coal company was based in the town of San Juan de Sabinas in the State of Coahuila and the "Leonor" pulled coal wagons for years before being retired in 1966 and put on display with its smaller 0-4-0ST stablemate "Lupita".
The Sabinas basin lay just south of the Rio Grande and west of Laredo, Texas. The C de S mines were part of a property the measured 11 miles by 4 1/2 miles on the northwestern part of the Sabinas basin. Schwarz, General Manager of the C de S, described the operating terrain, saying "Coming from Sabinas the ground rises gently but none of the hills exceed 150 feet above the valleys." He elaborated on the coal vein, which varied "from 4 feet to 7 1/2 feet and in one of the borings a 12-foot vein has been cut."
In a nod to the Cretaceous origins of the coal, Schwarz added "The seam has several streaks of bone, the greater part of the bone being easily picked out by hand pickers."
The Leonor is indirectly described as a "90,000 lb" engine that pulled coal cars to the Luhrig washer to be cleaned at the maximum rate of 1,000 tons per 10 hours.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Leonor |
| Locobase ID | 16308 |
| Railroad | Carbonifera de Sabinas |
| Country | Mexico |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Alco-Brooks |
| Year | 1907 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.67 / 2.95 |
| Engine Wheelbase (ft / m) | 22 / 6.71 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | 22 / 6.71 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 84,800 / 38,465 |
| Engine Weight (lbs / kg) | 113,000 / 51,256 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1500 / 5.68 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.50 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 47 / 23.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
| Tractive Effort (lbs / kg) | 17,408 / 7896.15 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.87 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 175 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 90 / 8.36 |
| Grate Area (sq ft / m2) | 18 / 1.67 |
| Evaporative Heating Surface (sq ft / m2) | 1045 / 97.08 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1045 / 97.08 |
| Evaporative Heating Surface/Cylinder Volume | 186.94 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3240 |
| Same as above plus superheater percentage | 3240 |
| Same as above but substitute firebox area for grate area | 16,200 |
| Power L1 | 4333 |
| Power MT | 337.95 |