Data from a table in 1947 Locomotive Cyclopedia, considerably supplemented by Negative 13435 of the Baldwin Locomotive Works, supplied by Bryan Norden to [],194903,194951#msg-194951 on 15 July 2011, last accessed 26 March 2012. Works numbers were 70334-70335 in 1944, 72242-72243 in 1945, and 73355-73358 in 1946.
In the 1940s, the Girardot, the Pacifico, and the Cundinamarca each ordered a medium-size Mountain of identical specifications to operate on the 3-foot gauge. Not many 4-8-2s on either the Metre or Cape gauges were bigger.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 28 |
| Locobase ID | 13998 |
| Railroad | Cundinamarca |
| Country | Colombia |
| Whyte | 4-8-2 |
| Number in Class | 4 |
| Road Numbers | 28-29, 26-27 |
| Gauge | 3' |
| Number Built | 4 |
| Builder | Baldwin |
| Year | 1944 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.50 / 3.51 |
| Engine Wheelbase (ft / m) | 29.25 / 8.92 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 55.08 / 16.79 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 30,500 / 13,835 |
| Weight on Drivers (lbs / kg) | 122,000 / 55,338 |
| Engine Weight (lbs / kg) | 179,000 / 81,193 |
| Tender Loaded Weight (lbs / kg) | 84,000 / 38,102 |
| Total Engine and Tender Weight (lbs / kg) | 263,000 / 119,295 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1500 / 5678 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 210 / 1450 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.5" x 22" / 470x559 |
| Tractive Effort (lbs / kg) | 32,000 / 14514.97 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.81 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 171 - 2" / 51 |
| Flues (number - dia) (in / mm) | 34 - 5.125" / 130 |
| Flue/Tube length (ft / m) | 17 / 5.18 |
| Firebox Area (sq ft / m2) | 157 / 14.59 |
| Grate Area (sq ft / m2) | 48 / 4.46 |
| Evaporative Heating Surface (sq ft / m2) | 2477 / 230.20 |
| Superheating Surface (sq ft / m2) | 685 / 63.66 |
| Combined Heating Surface (sq ft / m2) | 3162 / 293.86 |
| Evaporative Heating Surface/Cylinder Volume | 361.90 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10,080 |
| Same as above plus superheater percentage | 12,298 |
| Same as above but substitute firebox area for grate area | 40,223 |
| Power L1 | 20,246 |
| Power MT | 1463.43 |