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New Zealand Railways class WF
New Zealand | 1904 | 41 produced
No. 842 around 1928
No. 842 around 1928
Albert Percy Godber / Godber Collection, Alexander Turnbull Library
General
Built1904-1908, 1928
ManufacturerAddington, Hillside
Axle config2-6-4T (Adriatic) 
Gauge3 ft 6 in (Cape gauge)
Dimensions and Weights
Length34 ft 2 in
Wheelbase27 ft
Fixed wheelbase10 ft
Service weight97,887 lbs
Adhesive weight60,257 lbs
Axle load20,086 lbs
Water capacity1,141 us gal
Fuel capacity4,928 lbs (coal)
Power
Power sourcesteam
Estimated power500 hp (373 kW)
Optimal speed20 mph
Starting effort16,290 lbf
Power Plant
Driver diameter45 in
Boiler pressure200 psi
Expansion typesimple
Cylinderstwo, 14 x 22 in
Boiler
Grate area15.4 sq ft
Evaporative heating area729 sq ft
Total heating area729 sq ft
Calculated Values
steam locomotive
passenger
tank locomotive
secondary line
last changed: 09 2023
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