Data from DeGolyer, Volume 66, pp. 347+. Works number was 54550 in February 1922.
This small Prairie tank served a mining company rail that conveyed coal from the deposits along the Arroio dos Ratos to the port of Charqueadas, itself very near the southern port of Porto Alegre in Rio Grande do Sul State. Ruling grade was 3%. Although a coal burner, the 9 had a Rushton Improved spark-arresting cabbage stack.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 9 |
| Locobase ID | 15176 |
| Railroad | Minas de Sao Jeronymo |
| Country | Brazil |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 9 |
| Gauge | Metre |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1921 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.67 / 2.34 |
| Engine Wheelbase (ft / m) | 20.50 / 6.25 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 20.50 / 6.25 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 45,000 / 20,412 |
| Engine Weight (lbs / kg) | 65,000 / 29,484 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 65,000 / 29,484 |
| Tender Water Capacity (gals / ML) | 800 / 3.03 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.90 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 160 / 11 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
| Tractive Effort (lbs / kg) | 9527 / 4321.38 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.72 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 84 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8 / 2.44 |
| Firebox Area (sq ft / m2) | 45 / 4.18 |
| Grate Area (sq ft / m2) | 11.60 / 1.08 |
| Evaporative Heating Surface (sq ft / m2) | 350 / 32.52 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 350 / 32.52 |
| Evaporative Heating Surface/Cylinder Volume | 148.54 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1856 |
| Same as above plus superheater percentage | 1856 |
| Same as above but substitute firebox area for grate area | 7200 |
| Power L1 | 2408 |
| Power MT | 353.91 |