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South African class 26 “Red Devil”
In the seventies, David Wardale developed a concept for a modern steam locomotive with increased power and reduced consumption of coal and water. In this way he hoped that the steam locomotive could see another renais...
General
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Built | 1981 |
| Manufacturers | SAR |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Wheelbase | 11.58 m |
| Rigid wheelbase | 4.80 m |
| Total wheelbase | 24.81 m |
| Service weight | 119.3 t |
| Adhesive weight | 75.4 t |
| Axle load | 19 t |
| Total weight | 235.7 t |
| Water capacity | 47,734 l |
| Fuel capacity | 20.3 t (coal) |
Boiler
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Grate area | 3.437 m² |
| Firebox surface | 27.314 m² |
| Tube heating surface | 284.191 m² |
| Evaporative heating surface | 311.504 m² |
| Superheater surface | 94.232 m² |
| Total heating surface | 405.7 m² |
Power plant
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Driver diameter | 1,524 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 610 x 711 mm |
Power
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Power source | steam |
| Indicated power | 3,356 kW (4,563 PS) |
| Starting effort | 228.7 kN |
Calculated values
| Property | South African class 26 “Red Devil”Remove |
|---|---|
| Factor of adhesion | 1 : 3.24 |
| Optimal speed | 90 km/h |
| Power-to-weight ratio | 28.1 kW/t |
| Heating Surface Equivalent | 636.5 m² |
| Cylinder volume/HSE | 1 : 652.19 |
| Adhesive weight/Total | 1 : 1.58 |
| Tractive force/Heating surface | 1 : 11.77 |
| Grate area/Heating surface | 1 : 118.05 |
| Firebox/Tube surface | 1 : 10.40 |
| Total/Superheater | 1 : 3.31 |
