Pennsylvania class C1
United States 1925 90 produced
The Pennsylvania Railroad's class C1 was the heaviest 0-8-0 locomotive ever built. It had a service weight of 278,000 pounds and a maximum axle load of 74,000 pounds on the first axle. Due to its long wheelbase of 15 ft 9 in, however, the tracks were damaged and there were also frequent derailments. As far as possible, only switching locomotives with a 0-6-0 wheel arrangement were used. Nevertheless, the C1 was able to demonstrate its high tractive power on hump yards. The 90 locomotives were retired between 1948 and 1953.
Technical data
General
- Built
- 1925, 1927
- Manufacturers
- Altoona
- Wheel arrangement
- 0-8-0 (Eight-coupled)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 4.80 m
- Service mass
- 126.1 t
- Adhesion mass
- 126.1 t
- Rigid wheelbase
- 4.80 m
- Axle load
- 33.6 t
Boiler
- Grate area
- 5.732 m²
- Evaporative heating surface
- 364.273 m²
- Superheater surface
- 110.926 m²
- Total heating surface
- 475.2 m²
Power plant
- Driver diameter
- 1,422 mm
- Boiler pressure
- 17.2 bar
- Expansion type
- simple expansion
- Cylinders
- two, 686 x 762 mm
Power
- Power source
- steam
- Estimated power
- 1,864 kW (2,534 PS)
- Starting effort
- 369.2 kN
Calculated values
- Factor of adhesion
- 1 : 3.35
- Optimal speed
- 31 km/h
- Power-to-weight ratio
- 14.8 kW/t
- Adhesive weight/Total
- 1 : 1.00
- Tractive force/Heating surface
- 1 : 16.22
- Grate area/Heating surface
- 1 : 82.90
- Total/Superheater
- 1 : 3.28
