Madras & Southern Mahratta No. 500 to 503
India 1925 4 produced
In 1925, the Madras & Southern Mahratta Railway got four 4-8-0 locomotives for their metre-gauge network which had been designed by Messrs. Rendel, Palmer & Tritton. They were built by W.G. Bagnall and got the numbers 500 to 503. Some visible features were the inclined cylinders, the Belpaire firebox and steam pipes which were partly on the outside. Despite an axle load of only 8.7 tons, they had a good power to weight ratio. Also the tenders were relatively light, partly due to their rigid frame without the extra weight of bogies.
Technical data
General
- Built
- 1925
- Manufacturers
- W.G. Bagnall
- Wheel arrangement
- 4-8-0 (Twelve-wheeler)
- Gauge
- 1,000 mm (Meter gauge)
Dimensions and weights
- Length
- 15.98 m
- Wheelbase
- 6.25 m
- Total wheelbase
- 12.87 m
- Empty mass
- 39.3 t
- Service mass
- 43.4 t
- Adhesion mass
- 35.1 t
- Total mass
- 73.1 t
- Rigid wheelbase
- 3.66 m
- Axle load
- 8.5 t
- Water capacity
- 12,049 l
- Fuel capacity
- 4.6 t (coal)
Boiler
- Grate area
- 1.542 m²
- Firebox surface
- 11.52 m²
- Tube heating surface
- 72.929 m²
- Evaporative heating surface
- 84.449 m²
- Superheater surface
- 13.935 m²
- Total heating surface
- 98.4 m²
Power plant
- Driver diameter
- 1,092 mm
- Boiler pressure
- 11 bar
- Expansion type
- simple expansion
- Cylinders
- two, 432 x 559 mm
Power
- Power source
- steam
- Estimated power
- 559 kW (760 PS)
- Starting effort
- 89.4 kN
Calculated values
- Factor of adhesion
- 1 : 3.84
- Optimal speed
- 39 km/h
- Power-to-weight ratio
- 12.9 kW/t
- Heating Surface Equivalent
- 169.9 m²
- Cylinder volume/HSE
- 1 : 963.16
- Adhesive weight/Total
- 1 : 1.24
- Tractive force/Heating surface
- 1 : 18.99
- Grate area/Heating surface
- 1 : 63.80
- Firebox/Tube surface
- 1 : 6.33
- Total/Superheater
- 1 : 6.06
