Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 30, p 184. Works number was 30129 in February 1907.
The American-owned mining company worked silver and copper deposits and operated a 83-mile line from the Central of Peru's terminus at Oroya to Cerro de Pasco. Every mile of 70-lb/yard, 35-kg/metre rail was laid at altitudes of 12,000 ft or more. Two branch lines connected the main line with coal mines at Goyllarisquisga (26 miles away) and Quishuarcancha (11 miles). Maximum grade was held to 2% and grade curvature maxed out at a comparably modest 16 degrees.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 40 |
| Locobase ID | 13083 |
| Railroad | Cerro de Pasco |
| Country | Peru |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 40 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1907 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 / 3.81 |
| Engine Wheelbase (ft / m) | 19.75 / 6.02 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 86,000 / 39,009 |
| Engine Weight (lbs / kg) | 97,600 / 44,271 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 177,600 / 80,558 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1321 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 21,608 / 9801.24 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.98 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 186 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11 / 3.35 |
| Firebox Area (sq ft / m2) | 132 / 12.27 |
| Grate Area (sq ft / m2) | 25.70 / 2.39 |
| Evaporative Heating Surface (sq ft / m2) | 1195 / 111.06 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1195 / 111.06 |
| Evaporative Heating Surface/Cylinder Volume | 169.06 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4369 |
| Same as above plus superheater percentage | 4369 |
| Same as above but substitute firebox area for grate area | 22,440 |
| Power L1 | 3866 |
| Power MT | 297.32 |