Data from "Locomotiva "Mikado", Diagram 8-22-11[?], prepared 20 November for Department DA3 Oficinas, Escritorio Tecnico. Works numbers were 2041-2050 in 1950.
The Brazil Railway ordered this ten-engine batch of fast freight locomotivs for the metre gauge of the EF do Parana-Santa Catarina. The PSC rated the design's maximum speed at 70 kph (43.5 mph). Locobase wonders if the grate's area reflected its Belgian origins more than the inherent heat available in lower-calorie Brazilian coal. Other than the diagram, Locobase can find no reference to this class in his research.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 670 |
| Locobase ID | 21356 |
| Railroad | Parana-Santa Catarina |
| Country | Brazil |
| Whyte | 2-8-2 |
| Number in Class | 10 |
| Road Numbers | 670-679 |
| Gauge | metre |
| Number Built | 10 |
| Builder | SA de Haine, Cail, Couille |
| Year | 1950 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.48 / 4.11 |
| Engine Wheelbase (ft / m) | 28.94 / 8.82 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 52.61 / 16.04 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 110,231 / 50,000 |
| Engine Weight (lbs / kg) | 139,993 / 63,500 |
| Tender Loaded Weight (lbs / kg) | 68,343 / 31,000 |
| Total Engine and Tender Weight (lbs / kg) | 208,336 / 94,500 |
| Tender Water Capacity (gals / ML) | 3696 / 14 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5 / 4.50 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1220 |
| Boiler Pressure (psi / kPa) | 230.60 / 1570 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.72" x 24.02" / 450x610 |
| Tractive Effort (lbs / kg) | 30,799 / 13970.21 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.58 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 124.65 / 11.58 |
| Grate Area (sq ft / m2) | 30.68 / 2.85 |
| Evaporative Heating Surface (sq ft / m2) | 1523 / 141.50 |
| Superheating Surface (sq ft / m2) | 460 / 42.75 |
| Combined Heating Surface (sq ft / m2) | 1983 / 184.25 |
| Evaporative Heating Surface/Cylinder Volume | 222.14 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7075 |
| Same as above plus superheater percentage | 8702 |
| Same as above but substitute firebox area for grate area | 35,355 |
| Power L1 | 16,915 |
| Power MT | 1353.20 |