NSB Class XXI

NSB Class XXI

NSB locomotive class XXI number 1 photographed at Dübs & Co. Locomotive Works before delivery to Setesdalsbanen.
Photograph by Dübs & Co., 1894.
Type and origin
Power type Steam
Builder Dübs & Co. (2)
Thunes Mekaniske Værksted (1),
Hamar Jernstøberi (1)
Serial number Dübs 3172–3173,
Thune 4,
Hamar 77
Build date 1894 (2), 1901 (1) 1912 (1)
Total produced 4
Specifications
Configuration 2-6-2T
UIC class 1′C1′t n2
Gauge 3 ft 6 in (1,067 mm)
Driver dia. 36 in (914.4 mm)
Minimum curve 330 ft (100.6 m)
Length 27 ft 3 in (8.31 m)
Loco weight 18.4 long tons (20.6 short tons; 18.7 t)
Fuel type Coal
Fuel capacity 1,760 lb (800 kg)
Water cap 460 imp gal (2,100 L; 550 US gal)
Firebox:
  Firegrate area
7.5 sq ft (0.70 m2)
Boiler pressure 145 psi (1.00 MPa)
Heating surface 407.6 sq ft (37.87 m2)
Cylinders Two, outside
Cylinder size 11 in × 18 in (279.4 mm × 457.2 mm)
or 11.5 in × 18 in (292.1 mm × 457.2 mm)
Loco brake Hand brake, Carpenter brake from 1900
Performance figures
Maximum speed 25 mph (40 km/h)
Career
Operators Norges Statsbaner
Numbers 1, 2, 5, 7
Locale Setesdalsbanen

NSB Class XXI is a steam locomotive class designed by the Norwegian State Railways exclusively for use on the Setesdal Line.

Heritage locomotive on the Setesdal Line
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