Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54, p. 377. Works number was 45544 in May 1917.
Baldwin supplied a Prairie tank design that was essentially identical to the US shortline Mocanaqua & Eastern engine delivered in 1905 (Locobase 12865) and even ran on the same gauge. Conversion to oil-burning led to a note in the specs that the firebox was to have "suitable openings in fire pan to insure ample steaming capacity at 10,000 feet (3,048 m) altitude." It also had to get around 15 degrees (radii of 383 feet/117 metres).
Chiquicamata was located in the Atacama Desert fifteen miles (24 km) north of Calama and about 231 km (143 miles) northeast of the port of Antofagasta.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14521 |
| Railroad | FC de Mineral de Chiquicamata |
| Country | Chile |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 25.25 / 7.70 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.40 |
| Overall Wheelbase (engine & tender) (ft / m) | 25.25 / 7.70 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 114,000 / 51,710 |
| Engine Weight (lbs / kg) | 164,000 / 74,389 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 164,000 / 74,389 |
| Tender Water Capacity (gals / ML) | 1900 / 7.20 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 800 / 3028 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 63 / 31.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 25,864 / 11731.73 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.41 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 260 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.25 / 3.12 |
| Firebox Area (sq ft / m2) | 134 / 12.45 |
| Grate Area (sq ft / m2) | 49.50 / 4.60 |
| Evaporative Heating Surface (sq ft / m2) | 1518 / 141.08 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1518 / 141.08 |
| Evaporative Heating Surface/Cylinder Volume | 214.75 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 8910 |
| Same as above plus superheater percentage | 8910 |
| Same as above but substitute firebox area for grate area | 24,120 |
| Power L1 | 4272 |
| Power MT | 247.85 |