Sudan Railways class 180
Sudan 1924 10 produced
In 1924, the Sudan Government Railways received ten Mikados from Robert Stephenson & Co. and numbered them 180 to 189. They were designed by C.G. Hodgson and compared to the Mikados delivered by North British in 1921, they were lighter and had a smaller boiler. They had outside Walschaerts valve gear, a superheater and a Weir feed water pump. While the third driving axle had no wheel flanges, the flanges on the second driving axle had been made thinner. These locomotives were used on the Kassala Line that was also opened in 1924 and connected Kassala with Port Sudan. With a length of 216 miles and 63 bridges, the Kassala Cotton Co. had contributed a large part of the construction costs.
Technical data
General
- Built
- 1924
- Manufacturers
- Robert Stephenson & Co.
- Wheel arrangement
- 2-8-2 (Mikado)
- Gauge
- 1,067 mm (Cape gauge)
Dimensions and weights
- Wheelbase
- 8.56 m
- Total wheelbase
- 16.21 m
- Service mass
- 62.1 t
- Adhesion mass
- 44.5 t
- Total mass
- 111.1 t
- Rigid wheelbase
- 4.27 m
- Axle load
- 11.2 t
- Water capacity
- 18,185 l
- Fuel capacity
- 8.1 t (coal)
Boiler
- Grate area
- 2.415 m²
- Firebox surface
- 14.4 m²
- Tube heating surface
- 93.832 m²
- Evaporative heating surface
- 108.232 m²
- Superheater surface
- 24.155 m²
- Total heating surface
- 132.4 m²
Power plant
- Driver diameter
- 1,295 mm
- Boiler pressure
- 11.4 bar
- Expansion type
- simple expansion
- Cylinders
- two, 483 x 610 mm
Power
- Power source
- steam
- Estimated power
- 746 kW (1,014 PS)
- Starting effort
- 106.0 kN
Calculated values
- Factor of adhesion
- 1 : 4.11
- Optimal speed
- 43 km/h
- Power-to-weight ratio
- 12.0 kW/t
- Heating Surface Equivalent
- 228.5 m²
- Cylinder volume/HSE
- 1 : 975.83
- Adhesive weight/Total
- 1 : 1.40
- Tractive force/Heating surface
- 1 : 16.72
- Grate area/Heating surface
- 1 : 54.82
- Firebox/Tube surface
- 1 : 6.52
- Total/Superheater
- 1 : 4.48