Data from Schwartzkopff Damplokomotiven (Berliner Machinenbau-Actien-Gesellschfaft/BMAG, 1939), p.54 Works numbers were 10784-10794 in 1938.
This set of Mountains are nearly invisible to the Internet. But a simple review of its data shows some interesting values. For example, the 1500 mm driver diameter/gauge ratio equates to 88" on the standard gauge. Yet the evaporative heating surface/grate area suggests low-calorie coal, a limit partially compensated for by the high superheat percentage.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 826 |
| Locobase ID | 21297 |
| Railroad | Rio Grande do Sul |
| Country | Brazil |
| Whyte | 4-8-2 |
| Number in Class | 11 |
| Road Numbers | 826-836 |
| Gauge | Metre |
| Number Built | 11 |
| Builder | Schwartzkopff |
| Year | 1938 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.50 / 3.20 |
| Engine Wheelbase (ft / m) | 35.43 / 10.80 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 112,436 / 51,000 |
| Engine Weight (lbs / kg) | 176,370 / 80,000 |
| Tender Loaded Weight (lbs / kg) | 110,231 / 50,000 |
| Total Engine and Tender Weight (lbs / kg) | 286,601 / 130,000 |
| Tender Water Capacity (gals / ML) | 4752 / 18 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 11 / 10 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 47 / 23.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 59.10 / 1500 |
| Boiler Pressure (psi / kPa) | 242.40 / 1650 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 25.98" / 500x660 |
| Tractive Effort (lbs / kg) | 35,115 / 15927.92 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.20 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 48.44 / 4.50 |
| Evaporative Heating Surface (sq ft / m2) | 1787 / 166 |
| Superheating Surface (sq ft / m2) | 818 / 76 |
| Combined Heating Surface (sq ft / m2) | 2605 / 242 |
| Evaporative Heating Surface/Cylinder Volume | 195.17 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 11,742 |
| Same as above plus superheater percentage | 15,382 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |