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Soviet Railways series КП-4
Soviet Union | 1950 | 901 produced
КП-4 No. 3772 of the Bieszczady forest railway in July 2018 at Majdan station
КП-4 No. 3772 of the Bieszczady forest railway in July 2018 at Majdan station
Michal Derela
General
Built1950-1957
ManufacturerFablok
Axle config0-8-0 (Eight-coupled) 
Gauge2 ft 5 1/2 in, 2 ft 6 in (Two feet six inch)
Dimensions and Weights
Length34 ft 11 1/16 in
Length loco18 ft 8 7/8 in
Wheelbase7 ft 4 9/16 in
Fixed wheelbase7 ft 4 9/16 in
Total wheelbase26 ft 10 13/16 in
Empty weight30,865 lbs
Service weight35,274 lbs
Adhesive weight35,274 lbs
Total weight61,729 lbs
Axle load8,818 lbs
Water capacity1,374 us gal
Fuel capacity4,409 lbs (coal)
Power
Power sourcesteam
Indicated power177 hp (132 kW)
Optimal speed11 mph
Top speed22 mph
Starting effort10,085 lbf
Power Plant
Driver diameter23.6 in
Boiler pressure188 psi
Expansion typesimple
Cylinderstwo, 11 1/4 x 11 13/16 in
Boiler
Grate area10.9 sq ft
Evaporative heating area399.9 sq ft
Superheater area145.1 sq ft
Total heating area545 sq ft
Calculated Values
steam locomotive
freight
passenger
narrow gauge
last changed: 10 2023
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