Alton & Southern No. 10, 11, 13 and 14
United States 1928 4 produced
The Alton & Southern was owned by the Aluminum Company of America (ALCOA) and connected St. Louis, Missouri with East St. Louis, Illinois. Between 1925 and 1928, ALCO-Schenectady built four similar Mikados for this railroad with 55-inch drivers. All had cylinders of 25 by 30 inches and a grate area of 66.8 square feet. Numbers 10 and 11 were completed in 1925, followed by 13 in 1917 with slightly less heating surface. No 14, soon renumbered to 2, was built in 1928. It had a firebox heating surface of 296 instead of 243 square feet thanks to thermic syphons. All these locomotives were retired in 1950.
Technical data
General
- Built
- 1928
- Manufacturers
- ALCO
- Wheel arrangement
- 2-8-2 (Mikado)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 23.80 m
- Wheelbase
- 10.19 m
- Total wheelbase
- 19.98 m
- Service mass
- 124.5 t
- Adhesion mass
- 90.7 t
- Total mass
- 210.2 t
- Rigid wheelbase
- 4.57 m
- Axle load
- 22.7 t
- Water capacity
- 34,069 l
- Fuel capacity
- 12.7 t (coal)
Boiler
- Grate area
- 6.206 m²
- Firebox surface
- 28.15 m²
- Tube heating surface
- 287.535 m²
- Evaporative heating surface
- 315.685 m²
- Superheater surface
- 85.099 m²
- Total heating surface
- 400.8 m²
Power plant
- Driver diameter
- 1,397 mm
- Boiler pressure
- 13.1 bar
- Expansion type
- simple expansion
- Cylinders
- two, 635 x 762 mm
Power
- Power source
- steam
- Estimated power
- 2,051 kW (2,789 PS)
- Starting effort
- 244.9 kN
Calculated values
- Factor of adhesion
- 1 : 3.63
- Optimal speed
- 51 km/h
- Power-to-weight ratio
- 16.5 kW/t
- Heating Surface Equivalent
- 626.6 m²
- Cylinder volume/HSE
- 1 : 770.21
- Adhesive weight/Total
- 1 : 1.37
- Tractive force/Heating surface
- 1 : 12.76
- Grate area/Heating surface
- 1 : 64.58
- Firebox/Tube surface
- 1 : 10.21
- Total/Superheater
- 1 : 3.71
