Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 253. Works number was 32847 in July 1908.
This little outside-framed, wood-burning Mogul was rated to haul 100 long tons of trailing load up a maximum grade of 2% for 3.2 km(2 miles) and negotiate 100-metre (328-ft) curves. Maximum speed on the level was to be 35 km/h (22 mph). The SP a M ran 135 km (84 miles). Locobase cannot say if all or part of the Sao Paulo a Minas was rolled into the Cantareira Tramway, but the Rio Pardo certainly moved over. Its younger sister (an identical "twin") was delivered directly to the tramway and is shown in Locobase 13343.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | Rio Pardo |
| Locobase ID | 13476 |
| Railroad | Sao Paulo a Minas / Cantareira Tramway |
| Country | Brazil |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 60 cm |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1908 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7 / 2.13 |
| Engine Wheelbase (ft / m) | 12.83 / 3.91 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 35,600 / 16,148 |
| Engine Weight (lbs / kg) | 40,300 / 18,280 |
| Tender Loaded Weight (lbs / kg) | 30,000 / 13,608 |
| Total Engine and Tender Weight (lbs / kg) | 70,300 / 31,888 |
| Tender Water Capacity (gals / ML) | 1800 / 6.82 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 20 / 10 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 33 / 838 |
| Boiler Pressure (psi / kPa) | 150 / 10.30 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 16" / 305x406 |
| Tractive Effort (lbs / kg) | 8902 / 4037.88 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.00 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 68 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.79 / 3.29 |
| Firebox Area (sq ft / m2) | 41 / 3.81 |
| Grate Area (sq ft / m2) | 7.60 / 0.71 |
| Evaporative Heating Surface (sq ft / m2) | 422 / 39.20 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 422 / 39.20 |
| Evaporative Heating Surface/Cylinder Volume | 201.49 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1140 |
| Same as above plus superheater percentage | 1140 |
| Same as above but substitute firebox area for grate area | 6150 |
| Power L1 | 2470 |
| Power MT | 458.88 |