Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 23, p. 196. Martin Coombs, Chilean steam locomotive list, Part 3-Metre Gauge (March 2022), downloaded [], p. 184. Works number was 18510 in December 1900
The Loreto went about as far south in the New World as a locomotive could go when it traveled to Punta Arenas. The Mina Loreto tramway served a thick belt of lignite by taking it to the port and Baldwin guaranteed the Loreto to haul 65 tons of that up a 2 1/4% grade.
Martin Coombs reproduced the builder's photo, which confirms the engine's small scale by showing how big the cab had to be to fit a grown man inside.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 30, p. 156 Martin Coombs, Chilean steam locomotive list, Part 3-Metre Gauge (March 2022), downloaded [], pp. 183-184. Works number were 29719 in December 1906 and 44824 in January 1917.
Most tanks of this size and arrangement served sugar plantations, but the Punta Arenas operated at the extreme southern end of the South American continent. (The city was in fact 6,390 nautical miles/11,830 km) from New York City.) Baldwin's builder's photo suggests a more substantially built cab to cope with much more challenging weather conditions.
Magallanes, the second locomotive, ordered eleven years later, put one more short ton of weight on the drivers.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | Loreto | Punta Arenas |
| Locobase ID | 12468 | 13072 |
| Railroad | Mina Loreto | Mina Loreto |
| Country | Chile | Chile |
| Whyte | 0-4-2T | 0-4-2T |
| Number in Class | 1 | 2 |
| Road Numbers | 1 | 1 |
| Gauge | Metre | Metre |
| Number Built | 1 | 2 |
| Builder | Burnham, Williams & Co | Burnham, Williams & Co |
| Year | 1900 | 1906 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 4.50 / 1.37 | 5 / 1.52 |
| Engine Wheelbase (ft / m) | 10.75 / 3.28 | 11.50 / 3.51 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | 10.75 / 3.28 | 11.50 / 3.51 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 23,000 / 10,433 | 36,000 / 16,329 |
| Engine Weight (lbs / kg) | 28,000 / 12,701 | 40,000 / 18,144 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 350 / 1.33 | 500 / 1.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 19 / 9.50 | 30 / 15 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 33 / 838 | 37 / 940 |
| Boiler Pressure (psi / kPa) | 160 / 1100 | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 14" / 229x356 | 11" x 16" / 279x406 |
| Tractive Effort (lbs / kg) | 4673 / 2119.64 | 7116 / 3227.77 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.92 | 5.06 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 86 - 1.5" / 38 | 74 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 7.97 / 2.43 | 8.79 / 2.68 |
| Firebox Area (sq ft / m2) | 28.40 / 2.64 | 38.20 / 3.55 |
| Grate Area (sq ft / m2) | 7.24 / 0.67 | 7.80 / 0.72 |
| Evaporative Heating Surface (sq ft / m2) | 295 / 27.42 | 333 / 30.95 |
| Superheating Surface (sq ft / m2) | 6 | |
| Combined Heating Surface (sq ft / m2) | 295 / 27.42 | 339 / 30.95 |
| Evaporative Heating Surface/Cylinder Volume | 286.18 | 189.22 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1158 | 1248 |
| Same as above plus superheater percentage | 1158 | 1273 |
| Same as above but substitute firebox area for grate area | 4544 | 6234 |
| Power L1 | 3731 | 3241 |
| Power MT | 715.26 | 396.95 |