Data from Catalogue 10036-Locomotives for Export (New York City: American Locomotive Company, 1910), pp. 90-91. Works numbers were 6270-6271 in February 1905.
Ordered by W R Grace for this Chilean-Bolivian railway, this pair of radial saddle tanks received the highest two builder's numbers from Rogers before Alco officially took over the works. In fact, they were delivered as Alco products.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Iquique |
| Locobase ID | 20205 |
| Railroad | Aguas Blancas |
| Country | Bolivia |
| Whyte | 0-6-2ST |
| Number in Class | 2 |
| Road Numbers | 8-9 |
| Gauge | 2'6" |
| Number Built | 2 |
| Builder | Rogers |
| Year | 1905 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.50 / 2.59 |
| Engine Wheelbase (ft / m) | 16 / 4.88 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.53 |
| Overall Wheelbase (engine & tender) (ft / m) | 16 / 4.88 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 69,000 / 31,298 |
| Engine Weight (lbs / kg) | 78,000 / 35,380 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1200 / 4.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.25 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 38 / 19 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 14,409 / 6535.82 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.79 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 104 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12 / 3.66 |
| Firebox Area (sq ft / m2) | 57 / 5.30 |
| Grate Area (sq ft / m2) | 11.30 / 1.05 |
| Evaporative Heating Surface (sq ft / m2) | 723 / 67.17 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 723 / 67.17 |
| Evaporative Heating Surface/Cylinder Volume | 202.90 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1808 |
| Same as above plus superheater percentage | 1808 |
| Same as above but substitute firebox area for grate area | 9120 |
| Power L1 | 2791 |
| Power MT | 267.53 |