Data from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p.215. Works numbers were 27257-27258 in January 1906.
This nitrate-mining company was based at La Aguada southwest of Santiago and Pisagua much farther north.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 12911 |
| Railroad | Compania Comercial y Salitera La Aguada |
| Country | Chile |
| Whyte | 2-4-2ST |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | 2'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1906 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.50 / 1.68 |
| Engine Wheelbase (ft / m) | 18.17 / 5.54 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 18.17 / 5.54 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 26,400 / 11,975 |
| Engine Weight (lbs / kg) | 40,320 / 18,289 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 500 / 1.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 16" / 254x406 |
| Tractive Effort (lbs / kg) | 5881 / 2667.58 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.49 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 70 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.50 / 2.90 |
| Firebox Area (sq ft / m2) | 33.50 / 3.11 |
| Grate Area (sq ft / m2) | 7.70 / 0.72 |
| Evaporative Heating Surface (sq ft / m2) | 292 / 27.13 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 292 / 27.13 |
| Evaporative Heating Surface/Cylinder Volume | 200.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1232 |
| Same as above plus superheater percentage | 1232 |
| Same as above but substitute firebox area for grate area | 5360 |
| Power L1 | 3117 |
| Power MT | 520.59 |