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Wabash class K-3
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Page views since 2023-01-26: 9,246,052
Wabash class K-3
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United States | 1923
30 produced
No. 2271 in May 1946 at Windsor, Ontario
No. 2271 in May 1946 at Windsor, Ontario
collection Bill Molony

The Wabash class K-3 consisted of 30 locomotives which were based on the USRA Light Mikado that was designated K-2 at the Wabash, but had a firebox and tube heating surface that was nearly as big as that of the Heavy Mikado. The boiler pressure had been increased to 210 psi, but the grate and cylinders still had the same sizes.

Schenectady built 30 in 1923, of which the last five had a booster. The first 25 were only designated K-3 and numbered 2250 to 2274, while the last five with booster were designated K-3b and numbered 2275 to 2279. Later these locomotives got Worthington feed water heaters and Duplex stokers. No. 2254 had to be scrapped in 1944, but the others were only scrapped between 1950 and 1955.

VariantK-3K-3b
General
Built1923
ManufacturerALCO
Wheel arr.2-8-2 (Mikado) 2-8-2 (Mikado)
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase37 ft 2 in
Rigid wheelbase16 ft 9 in
Total wheelbase71 ft 10 1/2 in
Service weight325,000 lbs331,000 lbs
Adhesive weight242,000 lbs
Total weight521,200 lbs527,200 lbs
Axle load61,400 lbs
Water capacity10,000 us gal
Fuel capacity44,000 lbs (coal)
Boiler
Grate area66.7 sq ft
Firebox area305 sq ft
Tube heating area3,884 sq ft
Evaporative heating area4,189 sq ft
Superheater area1,051 sq ft
Total heating area5,240 sq ft
VariantK-3K-3b
Power Plant
Driver diameter64 in
Boiler pressure210 psi
Expansion typesimple
Cylinderstwo, 27 x 32 in
Power
Power sourcesteam
Estimated power3,200 hp (2,386 kW)
Starting effort65,063 lbf
Booster11,836 lbf
Calculated Values
steam locomotive
freight
booster
last changed: 12/2025
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