South Australian class 400
Australia 1952 10 produced
The class 400 of the South Australian Railways was a “Double Mountain” Garratt locomotive built for heavy ore traffic. Ten were built by Franco-Belge under license in 1952 and 1953. The East African Railways class 60 built in 1953 and 1954 was nearly identical. It took only until 1963 for all SAR class 400 locomotives to be stored due to the introduction of diesel locomotives. However, some diesel locomotives were converted to standard gauge. The gaps they left were filled with class 400 Garratts which returned to service for this reason in 1969. Today, only 402 and 409 are being preserved with both on static display.
Technical data
General
- Built
- 1952-1953
- Manufacturers
- Franco-Belge
- Wheel arrangement
- 4-8-2+2-8-4T (Double Mountain (Garratt))
- Gauge
- 1,067 mm (Cape gauge)
Dimensions and weights
- Length
- 26.65 m
- Service mass
- 151.4 t
- Adhesion mass
- 86.3 t
- Rigid wheelbase
- 4.08 m
- Axle load
- 10.8 t
- Water capacity
- 16,822 l
- Fuel capacity
- 0.9 t (oil)
Boiler
- Grate area
- 4.529 m²
- Firebox surface
- 17.93 m²
- Tube heating surface
- 165.275 m²
- Evaporative heating surface
- 183.205 m²
- Superheater surface
- 34.374 m²
- Total heating surface
- 217.6 m²
Power plant
- Driver diameter
- 1,219 mm
- Boiler pressure
- 13.8 bar
- Expansion type
- simple expansion
- Cylinders
- four, 406 x 610 mm
Power
- Power source
- steam
- Estimated power
- 1,305 kW (1,774 PS)
- Starting effort
- 193.6 kN
Calculated values
- Factor of adhesion
- 1 : 4.37
- Optimal speed
- 42 km/h
- Power-to-weight ratio
- 8.6 kW/t
- Heating Surface Equivalent
- 341.6 m²
- Cylinder volume/HSE
- 1 : 925.94
- Adhesive weight/Total
- 1 : 1.76
- Tractive force/Heating surface
- 1 : 18.58
- Grate area/Heating surface
- 1 : 48.04
- Firebox/Tube surface
- 1 : 9.22
- Total/Superheater
- 1 : 5.33
