Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 20, 127. Works numbers were 14857-14858 in May 1896.
125 later was rebuilt as a 2-6-2T.
This railway was an 1890 amalgamation of several broad-gauge railroads spidering out from Buenos Aires. At the time of its formation, the BAW mustered 660 route miles. The trunk line headed out west to Mercedes, where it met the Buenos Aires Pacific, then on to Bragado. From there, a tridentine forking connected Bragado with Rancul, Meridiano Quinto, and Toay.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 125 |
| Locobase ID | 12194 |
| Railroad | Argentine Great Western (BAP) |
| Country | Argentina |
| Whyte | 0-6-2T |
| Number in Class | 2 |
| Road Numbers | 125-126 |
| Gauge | 5'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1896 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.83 / 3.30 |
| Engine Wheelbase (ft / m) | 17.83 / 5.43 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.61 |
| Overall Wheelbase (engine & tender) (ft / m) | 17.83 / 5.43 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1200 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.5" x 24" / 445x610 |
| Tractive Effort (lbs / kg) | 20,825 / 9446.07 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 183 - 1.875" / 48 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.10 / 3.08 |
| Firebox Area (sq ft / m2) | 93 / 8.64 |
| Grate Area (sq ft / m2) | 19 / 1.77 |
| Evaporative Heating Surface (sq ft / m2) | 986 / 91.64 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 986 / 91.64 |
| Evaporative Heating Surface/Cylinder Volume | 147.58 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3040 |
| Same as above plus superheater percentage | 3040 |
| Same as above but substitute firebox area for grate area | 14,880 |
| Power L1 | 2780 |
| Power MT | |