FC del Potrerillos 2-8-0 Locomotives in Chile
Class Details by Steve Llanso of Sweat House Media
Class 101 (Locobase 14522)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54, p. 389 and Vol 78, pp. 304+. See also the description of the railway at the Los Andinos website at [
], last accessed 1 September 2013. Works numbers 45107 in February 1917, 58955 in January 1926, and 59470 in September.
Locobase 14520 describes a superheated Prairie tank ordered by Andes Copper at the same time as these Consolidations. The two designs shared every dimension except those affected by the differences in driven axles and the use of a separate tender. The longer adhesion wheelbase spread the weight out and the slopeback tender carried more supplies. Like the 2-6-2T, these 2-8-0s had 9" (227 mm) piston valves.
One of the conditions for these engines was that it would operate at 12,000 feet (3,658 metres).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 101 |
| Locobase ID | 14522 |
| Railroad | FC del Potrerillos |
| Country | Chile |
| Whyte | 2-8-0 |
| Number in Class | 3 |
| Road Numbers | 101-103 |
| Gauge | Metre |
| Number Built | 3 |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13 / 3.96 |
| Engine Wheelbase (ft / m) | 20.50 / 6.25 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | 48 / 14.63 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 22,000 / 9979 |
| Weight on Drivers (lbs / kg) | 84,500 / 38,329 |
| Engine Weight (lbs / kg) | 97,000 / 43,999 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 177,000 / 80,286 |
| 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) | 35 / 17.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 |
| Tractive Effort (lbs / kg) | 20,588 / 9338.57 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.10 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 107 - 2" / 51 |
| Flues (number - dia) (in / mm) | 15 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 10.75 / 3.28 |
| Firebox Area (sq ft / m2) | 111 / 10.32 |
| Grate Area (sq ft / m2) | 16.80 / 1.56 |
| Evaporative Heating Surface (sq ft / m2) | 934 / 86.80 |
| Superheating Surface (sq ft / m2) | 169 / 15.71 |
| Combined Heating Surface (sq ft / m2) | 1103 / 102.51 |
| Evaporative Heating Surface/Cylinder Volume | 161.60 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2688 |
| Same as above plus superheater percentage | 3091 |
| Same as above but substitute firebox area for grate area | 20,424 |
| Power L1 | 5833 |
| Power MT | 608.74 |