NSB Class XXI

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

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 m^2 (7.5 sq ft) Boiler pressure 1.00 MPa (145 psi) Heating surface 37.87 m^2 (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

Heritage locomotive on the Setesdal Line