Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 66, pp. 148 and Vol 78, p. 201. Works number was 55298 in March 1922 and 58415 in May 1925.
Ingenio Valdez was the oldest sugar mill in Ecuador, having been contructed in 1884.
In the 21st Century, it accounted for one-third of all of Ecuador's sugar production (3.1 million bags) and had about 11,000 hectares (27,000 acres) in production.
These little le'a (wood)-burning plantation four-wheelers seemed suitable for the very light rails weighing 25 lb/yard (12.5 kg/yard) and curve radii as tight as 50 feet (15.2 metres). The second such locomotive was named Rafica.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Dolores |
| Locobase ID | 15079 |
| Railroad | Ingenio Valdez |
| Country | Ecuador |
| Whyte | 0-4-0 |
| Number in Class | 2 |
| Road Numbers | 3-4 |
| Gauge | 3' |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1922 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5 / 1.52 |
| Engine Wheelbase (ft / m) | 5 / 1.52 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 25.75 / 7.85 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 24,000 / 10,886 |
| Engine Weight (lbs / kg) | 24,000 / 10,886 |
| Tender Loaded Weight (lbs / kg) | 26,000 / 11,793 |
| Total Engine and Tender Weight (lbs / kg) | 50,000 / 22,679 |
| Tender Water Capacity (gals / ML) | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 20 / 10 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 28 / 711 |
| Boiler Pressure (psi / kPa) | 165 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 14" / 229x356 |
| Tractive Effort (lbs / kg) | 5680 / 2576.41 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.23 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 88 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.75 / 2.06 |
| Firebox Area (sq ft / m2) | 38 / 3.53 |
| Grate Area (sq ft / m2) | 7.40 / 0.69 |
| Evaporative Heating Surface (sq ft / m2) | 268 / 24.90 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 268 / 24.90 |
| Evaporative Heating Surface/Cylinder Volume | 259.98 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1221 |
| Same as above plus superheater percentage | 1221 |
| Same as above but substitute firebox area for grate area | 6270 |
| Power L1 | 3421 |
| Power MT | 628.50 |