Data from Chilean State Railways (EFE) diagram book, 53, supplied in August 2025 by Allen Stanley from his extensive Rail Data Exchange collection. See also Martin Coombs, Chilean steam locomotive lists, Part 1, Broad gauge locos (v2.64, March 2026), p. at [].
Delivered as 0-4-2s like those shown in Locobase 9311 and 9313, both locomotives eventually received another driven axle. The Adelante came out of the shops as Tipo 3, a conventionally arranged American-style Eight-wheeler in which the lead bogie preceded the two driving axles.
As late as 1920, the aging #4 apparently was requisitioned by the Direccion de Obras Publicas (DOP). The EFE withdrew #5, Recompensa, some time before 1914.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Adelante/Tipo 3 |
| Locobase ID | 21330 |
| Railroad | Santiago & Valparaiso |
| Country | Chile |
| Whyte | 4-4-0 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | 5'6" |
| Number Built | 1 |
| Builder | Black, Hawthorn |
| Year | 1897 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8 / 2.44 |
| Engine Wheelbase (ft / m) | 21.54 / 6.57 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 37.54 / 11.44 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 49,966 / 22,664 |
| Engine Weight (lbs / kg) | 70,988 / 32,200 |
| Tender Loaded Weight (lbs / kg) | 52,580 / 23,850 |
| Total Engine and Tender Weight (lbs / kg) | 123,568 / 56,050 |
| Tender Water Capacity (gals / ML) | 1575 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 130 / 880 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 24" / 381x610 |
| Tractive Effort (lbs / kg) | 9945 / 4510.98 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.02 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 123 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.46 / 3.49 |
| Firebox Area (sq ft / m2) | 83.26 / 7.74 |
| Grate Area (sq ft / m2) | 17.29 / 1.61 |
| Evaporative Heating Surface (sq ft / m2) | 783 / 72.74 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 783 / 72.74 |
| Evaporative Heating Surface/Cylinder Volume | 159.51 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2248 |
| Same as above plus superheater percentage | 2248 |
| Same as above but substitute firebox area for grate area | 10,824 |
| Power L1 | 3176 |
| Power MT | 280.27 |