New York Central class K, later I-80
United States 1901 28 produced
The class K, later known as I-80, was a series of Atlantic express locomotives built for the New York Central's subsidiaries. Compared to the NYC's own class I it had many similarities, but half an inch less cylinder diameter. Both had Stephenson valve gear and a driver diameter of 79 inches. To aid starting on tracks with a high permitted axle load, both had a “traction increaser” that increased the load on the driving axles by 10,000 or 15,000 pounds. A drop-down water scoop was installed in the tenders to fill up the tender on the run. Between 1901 and 1903, ALCO-Schenectady built a total of 28. 16 of these were for the Michigan Central, ten for the Canada Southern and two for the Toledo, Canada Southern and Detroit.
Technical data
General
- Built
- 1901-1903
- Manufacturers
- ALCO
- Wheel arrangement
- 4-4-2 (Atlantic)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Wheelbase
- 8.31 m
- Rigid wheelbase
- 2.13 m
- Total wheelbase
- 16.80 m
- Service weight
- 79.8 t
- Adhesive weight
- 43.1 t
- Axle load
- 21.5 t
- Total weight
- 130.1 t
- Water capacity
- 18,927 l
- Fuel capacity
- 9.1 t (coal)
Boiler
- Grate area
- 4.673 m²
- Firebox surface
- 19.239 m²
- Tube heating surface
- 306.386 m²
- Evaporative heating surface
- 325.625 m²
- Total heating surface
- 325.6 m²
Power plant
- Driver diameter
- 2,007 mm
- Boiler pressure
- 13.8 bar
- Expansion type
- simple expansion
- Cylinders
- two, 533 x 660 mm
Power
- Power source
- steam
- Estimated power
- 1,305 kW (1,774 PS)
- Starting effort
- 109.8 kN
Calculated values
- Factor of adhesion
- 1 : 3.85
- Optimal speed
- 72 km/h
- Power-to-weight ratio
- 16.3 kW/t
- Heating Surface Equivalent
- 421.8 m²
- Cylinder volume/HSE
- 1 : 699.69
- Adhesive weight/Total
- 1 : 1.85
- Tractive force/Heating surface
- 1 : 7.04
- Grate area/Heating surface
- 1 : 69.68
- Firebox/Tube surface
- 1 : 15.93
