Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 66, pp. 294+. Works number was 53593 in August 1920 and 53626 in September.
This brace of wood-burning Prairie tanks went to a sugar plantation located at the town Capital in Bahia State.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 15136 |
| Railroad | Usina Aratu |
| Country | Brazil |
| Whyte | 2-6-2T |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | Metre |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9 / 2.74 |
| Engine Wheelbase (ft / m) | 21.33 / 6.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 21.33 / 6.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 58,000 / 26,308 |
| Engine Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 80,000 / 36,287 |
| Tender Water Capacity (gals / ML) | 1390 / 5.27 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 32 / 16 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 18" / 356x457 |
| Tractive Effort (lbs / kg) | 13,778 / 6249.60 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.21 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 117 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.50 / 2.59 |
| Firebox Area (sq ft / m2) | 66 / 6.13 |
| Grate Area (sq ft / m2) | 11.60 / 1.08 |
| Evaporative Heating Surface (sq ft / m2) | 581 / 53.98 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 581 / 53.98 |
| Evaporative Heating Surface/Cylinder Volume | 181.16 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1972 |
| Same as above plus superheater percentage | 1972 |
| Same as above but substitute firebox area for grate area | 11,220 |
| Power L1 | 2978 |
| Power MT | 339.59 |