Melhoramentos de Monte Alto 0-4-2 Locomotives in Brazil
Class Details by Steve Llanso of Sweat House Media
Class Monte Alto (Locobase 13454)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 231. See also tramz site at [
], last accessed 22 January 2012. Works number was 32812 in August 1908.
Similar in size to other radial 4-coupled tanks often used in plantation service, this class had longer cylinder strokes.
This 33-km (20.5-mile) railway began at the Paulista Railroad's Ibitarama station and extended through Monte Alto to Vista Alegre. the CM de MA lay about 370 km (230 miles) northwest of Sao Paulo.
In 1926, gasoline-powered railcars took over the service from the likes of such steam engines as these.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Monte Alto |
| Locobase ID | 13454 |
| Railroad | Melhoramentos de Monte Alto |
| Country | Brazil |
| Whyte | 0-4-2ST |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | Metre |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.50 / 1.37 |
| Engine Wheelbase (ft / m) | 10.75 / 3.28 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 10.75 / 3.28 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 26,000 / 11,793 |
| Engine Weight (lbs / kg) | 31,000 / 14,061 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 31,000 / 14,061 |
| Tender Water Capacity (gals / ML) | 400 / 1.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 33 / 838 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 16" / 229x406 |
| Tractive Effort (lbs / kg) | 5341 / 2422.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.87 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 86 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.97 / 2.43 |
| Firebox Area (sq ft / m2) | 28.40 / 2.64 |
| Grate Area (sq ft / m2) | 7.24 / 0.67 |
| Evaporative Heating Surface (sq ft / m2) | 295 / 27.41 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 295 / 27.41 |
| Evaporative Heating Surface/Cylinder Volume | 250.40 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1158 |
| Same as above plus superheater percentage | 1158 |
| Same as above but substitute firebox area for grate area | 4544 |
| Power L1 | 3264 |
| Power MT | 553.53 |