Data from DeGolyer Library, p. 129. Works numbers were 19956-19957 in December 1901.
In addition to the 20" x 24" Consolidations purchased at the same time (Locobase 10778), the Chilean State ordered this pair of smaller 2-8-0s for the Coquimba, an even more lightly built railway.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 283 |
| Locobase ID | 12583 |
| Railroad | Coquimba |
| Country | Chile |
| Whyte | 2-8-0 |
| Number in Class | 2 |
| Road Numbers | 283-284 |
| Gauge | 5'6" |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1901 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.50 / 4.11 |
| Engine Wheelbase (ft / m) | 20.67 / 6.30 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.65 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 90,000 / 40,823 |
| Engine Weight (lbs / kg) | 106,000 / 48,081 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 3600 / 13.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 38 / 19 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 24,786 / 11242.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.63 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 173 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.69 / 3.87 |
| Firebox Area (sq ft / m2) | 104.20 / 9.68 |
| Grate Area (sq ft / m2) | 20.40 / 1.90 |
| Evaporative Heating Surface (sq ft / m2) | 1240 / 115.24 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1240 / 115.24 |
| Evaporative Heating Surface/Cylinder Volume | 175.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3672 |
| Same as above plus superheater percentage | 3672 |
| Same as above but substitute firebox area for grate area | 18,756 |
| Power L1 | 3587 |
| Power MT | 351.47 |