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Page views since 2023-01-26: 882458
Lehigh Valley class K-6b
United States | 1924
12 produced
No. 2095 in Mauch Chunk, Pennsylvania, now known as Jim Thorpe
No. 2095 in Mauch Chunk, Pennsylvania, now known as Jim Thorpe
Clinton T. Andrews / collection Taylor Rush

In 1924, ALCO-Brooks built ten K-6b Pacifics for the Lehigh Valley. Their weight was between that of the K-4 and K-5, but they had the larger 77 inch drivers and the same cylinder dimensions as the K-3. Two others were rebuilt in the LV's Sayre Shops from K-3 in 1925 and 1926. In 1939 and 1940, three were streamlined with casings designed by Otto Kuhler.

General
Built1924-1926
ManufacturerALCO, Sayre
Axle config4-6-2 (Pacific) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase36 ft 6 in
Rigid wheelbase13 ft 8 in
Total wheelbase73 ft
Service weight291,000 lbs
Adhesive weight181,000 lbs
Total weight488,500 lbs
Axle load60,400 lbs
Water capacity10,500 us gal
Fuel capacity30,000 lbs (coal)
Boiler
Grate area75.3 sq ft
Firebox area328 sq ft
Tube heating area2,957 sq ft
Evaporative heating area3,285 sq ft
Superheater area945 sq ft
Total heating area4,230 sq ft
Power Plant
Driver diameter77 in
Boiler pressure215 psi
Expansion typesimple
Cylinderstwo, 25 x 28 in
Power
Power sourcesteam
Estimated power3,250 hp (2,424 kW)
Optimal speed50 mph
Starting effort41,534 lbf
Calculated Values
steam locomotive
express
streamline
last changed: 05/2024
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