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The reference for locomotives and railcars

Cape Copper Co. Scotia class

Namaqualand Scotia class

South Africa 1900 6 produced
Factory photo showing either No. 9 “Hibernia” or No. 10 “Cambria” Kitson, National Railway Museum York collection PD

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 Although mining was restarted in 1937, this was only at a very small scale and the locomotives were withdrawn around 1939 and 1940.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
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