Cape Copper Co. Scotia class
Namaqualand Scotia class
The Scotia class of the Cape Copper Co. was introduced in 1900 to alleviate the problems with the bad quality of the local water encountered on the previous Clara class. To reduce the sediments in the boiler tubes, the new locomotives received a boiler with shorter tubes, but a longer firebox. The six locomotives built between 1900 and 1905 still had a 0-6-2 wheel arrangement and sheet-metal casing on the sides to protect the moving parts from sand.
They were named Scotia, Hibernia, Cambria, Canada, Australia and India. In 1922 the O'okiep copper mines were closed and there was only a basic twice-weekly service on this two and a half feet narrow gauge line between the location of the mines and Port Nolloth. Although mining was restarted in 1937, this was only at a very small scale and the locomotives were withdrawn around 1939 and 1940.
Technical data
General
- Built
- 1900-1905
- Manufacturers
- Kitson & Co.
- Wheel arrangement
- 0-6-2 (Webb)
- Gauge
- 762 mm (Two feet six inch)
Dimensions and weights
- Wheelbase
- 3.43 m
- Service mass
- 25.9 t
- Total mass
- 37.1 t
- Rigid wheelbase
- 1.91 m
- Water capacity
- 4,546 l
- Fuel capacity
- 3 t (coal)
Boiler
- Grate area
- 1.394 m²
- Firebox surface
- 6.828 m²
- Tube heating surface
- 51.979 m²
- Evaporative heating surface
- 58.808 m²
- Total heating surface
- 58.8 m²
Power plant
- Driver diameter
- 914 mm
- Boiler pressure
- 10.3 bar
- Expansion type
- simple expansion
- Cylinders
- two, 356 x 533 mm
Power
- Power source
- steam
- Estimated power
- 186 kW (253 PS)
- Starting effort
- 64.8 kN
Calculated values
- Optimal speed
- 18 km/h
- Power-to-weight ratio
- 7.2 kW/t
- Heating Surface Equivalent
- 92.9 m²
- Cylinder volume/HSE
- 1 : 1,139.88
- Tractive force/Heating surface
- 1 : 23.03
- Grate area/Heating surface
- 1 : 42.19
- Firebox/Tube surface
- 1 : 7.61