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 Sweat House 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 / 12.40 |
| 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 |