Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 65, p. 374+. See also Jonathan C Brown,"Chapter Two -- The Great Mexican Oil Boom" in Oil and Revolution in Mexico (Berkeley, CA: University of California Press, 1993), esp. pp. 110 et seq. Works number was 54238 in January 1921.
Another of the built-for-stock Baldwin plantation Moguls, which were produced by the Foreign Sales Department against anticipated Cuban orders, this oil-burner was repurposed for freight operations on behalf of the John A Hunt Corporation.
The company owned a railway in Mexico from Tampico--on the Gulf of Mexico halfway between the international border and Veracruz- westward to Topila then south across the P_nuco river to the oilfields.
Begun in 1915, the railroad was built as quickly as possible to tap oilfields in both Topila and P_nuco. Occasionally caught up in the civil war between (among others) the Constitucionalistas and the Villistas, the 48 mile (77 km) railroad emerged from the war intact in 1920. One of its acts at that point was the purchase of this small 2-6-0, which could be converted to coal-firing if necessary.
The TPVRy was "wound up" (according to the London Gazette of 14 November 1930, p. 7275) on 13 November 1930. The road passed to the Petroleos Mexicanos. As late as 1950, the 107 was still on the roster at which point it was renumbered 102.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 107 |
| Locobase ID | 14984 |
| Railroad | Tampico-Panuco Valley |
| Country | Mexico |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 107/102 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.50 / 3.51 |
| Engine Wheelbase (ft / m) | 19.33 / 5.89 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.59 |
| Overall Wheelbase (engine & tender) (ft / m) | 46.29 / 14.11 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 97,000 / 43,999 |
| Engine Weight (lbs / kg) | 112,500 / 51,029 |
| Tender Loaded Weight (lbs / kg) | 85,000 / 38,555 |
| Total Engine and Tender Weight (lbs / kg) | 197,500 / 89,584 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1800 / 6813 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1321 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 22,879 / 10377.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.24 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 219 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11 / 3.35 |
| Firebox Area (sq ft / m2) | 103 / 9.57 |
| Grate Area (sq ft / m2) | 21.30 / 1.98 |
| Evaporative Heating Surface (sq ft / m2) | 1355 / 125.93 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1355 / 125.93 |
| Evaporative Heating Surface/Cylinder Volume | 191.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3834 |
| Same as above plus superheater percentage | 3834 |
| Same as above but substitute firebox area for grate area | 18,540 |
| Power L1 | 4126 |
| Power MT | 281.33 |