Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 31, p. 90 Works number was 32247 in November 1907.
This small, low-drivered Consolidation joined a small stud of locomotives in support of investors Weetman Pearson and James Hyslop. An oil-burner like so many Mexican locomotives, it used a rear-mounted burner.
Pearson had already established a reputaton for exploring for oil in northern Mexico in his Pearson & Son production company. The new company , know widely as "El Aguila" [the Eagle], absorbed all of Pearson's assets. A year later, Mexicana de Petroleo struck oil in la Faja del Oro that immediately showed a flow of 100,000 barrells a day.
Unfortunately for El Aguila, its long-standing relationship with Mexico's Porfirio Diaz through Pearson's earlier activities proved toxic in the eyes of the revolutionary government that ousted Diaz in 1909. Pearson tried to avoid Mexican government control; he negotiated a transfer of ownership to the Anglo-Royal Dutch Shell in 1919.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 13225 |
| Railroad | Mexicana de Petroleo |
| Country | Mexico |
| Whyte | 2-8-0 |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1907 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15 / 4.57 |
| Engine Wheelbase (ft / m) | 23 / 7.01 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.65 |
| Overall Wheelbase (engine & tender) (ft / m) | 53.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 123,000 / 55,792 |
| Engine Weight (lbs / kg) | 137,000 / 62,142 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 217,000 / 98,429 |
| 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) | 51 / 25.50 |
| 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) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 29,467 / 13366.02 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.17 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 240 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.83 / 4.22 |
| Firebox Area (sq ft / m2) | 147 / 13.66 |
| Grate Area (sq ft / m2) | 30.80 / 2.86 |
| Evaporative Heating Surface (sq ft / m2) | 1875 / 174.26 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1875 / 174.26 |
| Evaporative Heating Surface/Cylinder Volume | 198.41 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5544 |
| Same as above plus superheater percentage | 5544 |
| Same as above but substitute firebox area for grate area | 26,460 |
| Power L1 | 4474 |
| Power MT | 320.76 |