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Natal Government Railways class B (1906)
In 1904, the Natal Government Railways procured a total of 50 class B locomotives for the main line, which has a gradient of up to 1 in 30. These had the wheel arrangement 4-8-0 and delivered sufficient power for the ...
General
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Built | 1906 |
| Manufacturers | North British, NGR |
| Wheel arrangement | 4-8-2 (Mountain) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Length | 17.19 m |
| Wheelbase | 8.38 m |
| Rigid wheelbase | 3.89 m |
| Total wheelbase | 14.95 m |
| Service weight | 71.7 t |
| Adhesive weight | 56.8 t |
| Axle load | 15.1 t |
| Total weight | 110.2 t |
| Water capacity | 12,208 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Grate area | 3.159 m² |
| Firebox surface | 11.95 m² |
| Tube heating surface | 194.555 m² |
| Evaporative heating surface | 206.505 m² |
| Total heating surface | 206.5 m² |
Power plant
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Driver diameter | 1,156 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 521 x 610 mm |
Power
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Power source | steam |
| Estimated power | 708 kW (963 PS) |
| Starting effort | 159.2 kN |
Calculated values
| Property | Natal Government Railways class B (1906)Remove |
|---|---|
| Factor of adhesion | 1 : 3.50 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 9.9 kW/t |
| Heating Surface Equivalent | 266.3 m² |
| Cylinder volume/HSE | 1 : 975.08 |
| Adhesive weight/Total | 1 : 1.26 |
| Tractive force/Heating surface | 1 : 16.11 |
| Grate area/Heating surface | 1 : 65.37 |
| Firebox/Tube surface | 1 : 16.28 |
