Florida East Coast class 801
developed from USRA Heavy Mountain
United States 1926 23 produced
The last steam locomotives that the Florida East Coast purchased new were 23 copies of the USRA Heavy Mountain. They were delivered by ALCO-Schenectady in 1926 and were numbered 801 to 823. After the Mountains of the classes 301 and 401, they were significantly heavier. In direct comparison with the 401, they had a larger boiler and larger cylinders, but smaller drivers for greater pulling power. After three were lost by 1952 due to boiler explosion or accident, the remaining 20 were scrapped in 1954.
Technical data
General
- Built
- 1926
- Manufacturers
- ALCO
- Wheel arrangement
- 4-8-2 (Mountain)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 12.52 m
- Total wheelbase
- 25.21 m
- Service mass
- 161.5 t
- Adhesion mass
- 101.8 t
- Total mass
- 277.6 t
- Rigid wheelbase
- 5.49 m
- Axle load
- 27.8 t
- Water capacity
- 45,425 l
- Fuel capacity
- 18,927 l (oil)
Boiler
- Grate area
- 6.996 m²
- Firebox surface
- 36.697 m²
- Tube heating surface
- 429.12 m²
- Evaporative heating surface
- 465.816 m²
- Superheater surface
- 137.218 m²
- Total heating surface
- 603.0 m²
Power plant
- Driver diameter
- 1,753 mm
- Boiler pressure
- 13.8 bar
- Expansion type
- simple expansion
- Cylinders
- two, 711 x 762 mm
Power
- Power source
- steam
- Estimated power
- 2,386 kW (3,244 PS)
- Starting effort
- 257.8 kN
Calculated values
- Factor of adhesion
- 1 : 3.88
- Optimal speed
- 56 km/h
- Power-to-weight ratio
- 14.8 kW/t
- Heating Surface Equivalent
- 923.7 m²
- Cylinder volume/HSE
- 1 : 655.40
- Adhesive weight/Total
- 1 : 1.59
- Tractive force/Heating surface
- 1 : 8.93
- Grate area/Heating surface
- 1 : 86.20
- Firebox/Tube surface
- 1 : 11.69
- Total/Superheater
- 1 : 3.39
