Data from Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), 1011.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 712 |
| Locobase ID | 15019 |
| Railroad | Chilean State |
| Country | Chile |
| Whyte | 2-8-2 |
| Number in Class | 15 |
| Road Numbers | |
| Gauge | 5'6" |
| Number Built | 15 |
| Builder | Montreal LW |
| Year | 1919 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 140,000 / 63,503 |
| Engine Weight (lbs / kg) | 194,500 / 88,224 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 5000 / 18.94 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8 / 7 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 58 / 29 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22" x 28" / 559x711 |
| Tractive Effort (lbs / kg) | 37,026 / 16794.73 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.78 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 157 - 2" / 51 |
| Flues (number - dia) (in / mm) | 26 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 18 / 5.49 |
| Firebox Area (sq ft / m2) | 145 / 13.47 |
| Grate Area (sq ft / m2) | 42.10 / 3.91 |
| Evaporative Heating Surface (sq ft / m2) | 2288 / 212.56 |
| Superheating Surface (sq ft / m2) | 583 / 54.16 |
| Combined Heating Surface (sq ft / m2) | 2871 / 266.72 |
| Evaporative Heating Surface/Cylinder Volume | 185.73 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7578 |
| Same as above plus superheater percentage | 9094 |
| Same as above but substitute firebox area for grate area | 31,320 |
| Power L1 | 11,264 |
| Power MT | 709.51 |