Data from Roy V Wright (Ed.) 1912 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1912), p. 159. Works number was 46574 in June 1909.
This ferrocarril served mines near Duran in the Province of El Oro (so it is correct to use "de El Oro" rather than "Del Oro"). El Oro is the southernmost coastal province in Ecuador. This little tank's name honors the capital of the Province and of its own Canton.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Machala |
| Locobase ID | 15036 |
| Railroad | De El Oro |
| Country | Ecuador |
| Whyte | 0-4-4T |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Alco-Pittsburgh |
| Year | 1909 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.92 / 1.50 |
| Engine Wheelbase (ft / m) | 16.33 / 4.98 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 16.33 / 4.98 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 27,600 / 12,519 |
| Engine Weight (lbs / kg) | 43,000 / 19,504 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 700 / 2.65 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 23 / 11.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 16" / 254x406 |
| Tractive Effort (lbs / kg) | 5514 / 2501.11 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.01 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 69 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 36 / 3.34 |
| Grate Area (sq ft / m2) | 7.50 / 0.70 |
| Evaporative Heating Surface (sq ft / m2) | 318 / 29.54 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 318 / 29.54 |
| Evaporative Heating Surface/Cylinder Volume | 218.64 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1125 |
| Same as above plus superheater percentage | 1125 |
| Same as above but substitute firebox area for grate area | 5400 |
| Power L1 | 3167 |
| Power MT | 505.94 |