Data from table in 1947 Locomotive Cyclopedia; and Baldwin Locomotive Works Negative 12,027, Class 2-8-2, 16 S, 104 supplied in March 2023 in an email from Teemu Koivumaki. Works numbers 64139-64140 in 1940.
One of several batches ordered by the Minesterio de Viacao & Obras Publicas (Ministry of Railways and Public Works) for metre-gauge lines in the early 1940s. Like many narrow-gauge superheated Mikados operating in Brazil at the time, this pair's tenders held 3.3 cords of wood. Eight-inch (203 mm) piston valves admitted steam to the cylinders.
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| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 33 |
| Locobase ID | 945 |
| Railroad | Sao Luiz-Teresina |
| Country | Brazil |
| Whyte | 2-8-2 |
| Number in Class | 2 |
| Road Numbers | 33-34 |
| Gauge | Metre |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1940 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 26.83 / 8.18 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.41 |
| Overall Wheelbase (engine & tender) (ft / m) | 54.54 / 16.62 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 86,000 / 39,009 |
| Engine Weight (lbs / kg) | 116,500 / 52,844 |
| Tender Loaded Weight (lbs / kg) | 66,900 / 30,345 |
| Total Engine and Tender Weight (lbs / kg) | 183,400 / 83,189 |
| Tender Water Capacity (gals / ML) | 3700 / 14.02 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 36 / 18 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 184.20 / 1270 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 20,041 / 9090.46 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.29 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 100 - 2" / 51 |
| Flues (number - dia) (in / mm) | 16 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 13 / 3.96 |
| Firebox Area (sq ft / m2) | 143 / 13.29 |
| Grate Area (sq ft / m2) | 38.20 / 3.55 |
| Evaporative Heating Surface (sq ft / m2) | 1111 / 103.22 |
| Superheating Surface (sq ft / m2) | 227 / 21.09 |
| Combined Heating Surface (sq ft / m2) | 1338 / 124.31 |
| Evaporative Heating Surface/Cylinder Volume | 238.71 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7036 |
| Same as above plus superheater percentage | 8233 |
| Same as above but substitute firebox area for grate area | 30,819 |
| Power L1 | 10,208 |
| Power MT | 1046.73 |