Data from DeGolyer Library, p. 129; and Chilean State Railways (EFE) diagram book, 53, supplied in August 2025 by Allen Stanley from his extensive Rail Data Exchange collection.. See also Martin Coombs, Chilean steam locomotive lists, Part 1, Broad gauge locos (v2.64, March 2026), p. at []. 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 | 117/Tipo 69 |
| Locobase ID | 12583 |
| Railroad | Coquimba |
| Country | Chile |
| Whyte | 2-8-0 |
| Number in Class | 2 |
| Road Numbers | 291-292 |
| 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 |