Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 36, p. 258, 260. Works numbers 34041-34042, 34078 in November 1909; 35252-35253 in September 1910, 37528-37529 in February 1912.
This set of Consolidations was just a bit smaller in the cylinders and boiler than the numerous Ten-wheelers that had come on the GCR over the previous two decades (Locobases 11707 and 12117) . But they were haulers that put more adhesive weight on the rail.. In fact they duplicated the design of the 2-8-0s that were built for Mexican railway San Marco y Tecolutia eight years earlier (Locobase 11912). The last two were completed as oil-fired locomotives.
All went into the International Railroad of Central America, were renumbered 63, 62, 61, 64, 65, 25, 26 respectively. They served the IRCA until the 1950s.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 20 |
| Locobase ID | 12118 |
| Railroad | Guatemala Central |
| Country | Guatemala |
| Whyte | 2-8-0 |
| Number in Class | 7 |
| Road Numbers | 20-26 |
| Gauge | 3' |
| Number Built | 7 |
| Builder | Baldwin |
| Year | 1909 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.92 / 3.33 |
| Engine Wheelbase (ft / m) | 17.17 / 5.23 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.64 |
| Overall Wheelbase (engine & tender) (ft / m) | 45.84 / 13.97 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 82,000 / 37,195 |
| Engine Weight (lbs / kg) | 91,000 / 41,277 |
| Tender Loaded Weight (lbs / kg) | 66,000 / 29,937 |
| Total Engine and Tender Weight (lbs / kg) | 157,000 / 71,214 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38 / 965 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 20,615 / 9350.82 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.98 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 179 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.50 / 4.42 |
| Firebox Area (sq ft / m2) | 83.38 / 7.75 |
| Grate Area (sq ft / m2) | 16.80 / 1.56 |
| Evaporative Heating Surface (sq ft / m2) | 1437 / 133.55 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1437 / 133.55 |
| Evaporative Heating Surface/Cylinder Volume | 308.75 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3024 |
| Same as above plus superheater percentage | 3024 |
| Same as above but substitute firebox area for grate area | 15,008 |
| Power L1 | 4541 |
| Power MT | 488.35 |