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Central South African class 11
The class 11 designated 36 2-8-2 locomotives built by North British in 1904. They were designed by P.A. Hyde for freight service on newly upgraded lines with heavier tracks of 80 pounds per yard. It was a modern desig...
General
| Property | Central South African class 11Remove |
|---|---|
| Built | 1904 |
| Manufacturers | North British |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | Central South African class 11Remove |
|---|---|
| Length | 19.62 m |
| Wheelbase | 8.92 m |
| Rigid wheelbase | 4.00 m |
| Total wheelbase | 16.97 m |
| Service weight | 81 t |
| Adhesive weight | 63.3 t |
| Axle load | 16 t |
| Total weight | 131.1 t |
| Water capacity | 18,185 l |
| Fuel capacity | 10.2 t (coal) |
Boiler
| Property | Central South African class 11Remove |
|---|---|
| Grate area | 3.437 m² |
| Firebox surface | 13.192 m² |
| Tube heating surface | 169.92 m² |
| Evaporative heating surface | 183.112 m² |
| Superheater surface | 30.751 m² |
| Total heating surface | 213.9 m² |
Power plant
| Property | Central South African class 11Remove |
|---|---|
| Driver diameter | 1,219 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 508 x 660 mm |
Power
| Property | Central South African class 11Remove |
|---|---|
| Power source | steam |
| Estimated power | 858 kW (1,167 PS) |
| Starting effort | 155.7 kN |
Calculated values
| Property | Central South African class 11Remove |
|---|---|
| Factor of adhesion | 1 : 3.99 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 10.6 kW/t |
| Heating Surface Equivalent | 310.6 m² |
| Cylinder volume/HSE | 1 : 861.96 |
| Adhesive weight/Total | 1 : 1.28 |
| Tractive force/Heating surface | 1 : 15.20 |
| Grate area/Heating surface | 1 : 62.22 |
| Firebox/Tube surface | 1 : 12.88 |
| Total/Superheater | 1 : 5.95 |
