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

This article does not cite any sources. (December 2009)

NSB Class XXI
NSB locomotive class XXI number 1 photographed at Dübs & Co. Locomotive Works before delivery to the Setesdal Line. 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: ​  • Whyte 2-6-2T  • UIC 1′C1′t n2 Gauge 1,067 mm (3 ft 6 in) Driver dia. 914 mm (36.0 in) Minimum curve 100 m (330 ft) Length 8,300 mm (27.2 ft) Adhesive weight 14.7 t Loco weight 18.7 t Fuel type Coal Fuel capacity 800 kg (1,800 lb) Water cap. 2.1 t Firebox:  • Firegrate area 0.7 m2 (7.5 sq ft) Boiler pressure 1.00 MPa (145 psi) Heating surface 37.87 m2 (407.6 sq ft) Cylinders Two, outside Cylinder size 279.4 mm × 457.2 mm (11 in × 18 in) or 292.1 mm × 457.2 mm (11.5 in × 18 in) Loco brake Hand brake, Carpenter brake from 1900
Performance figures Maximum speed 40 km/h (25 mph)
Career Operators Norges Statsbaner Numbers 1, 2, 5, 7 Locale Setesdal Line

External links

• Entry at Norwegian Railway Club

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