NSB Class XXI
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| NSB Class XXI | ||
|---|---|---|
| Numbers | 1, 2, 5, 7 | |
| Builder | Dübs & Co. & Thunes Mekaniske Værksted | |
| Introduced | 1894-1912 | |
| Wheel Arrangement | 2-6-2 (1-C-1) | |
| Weight | 18 t 8 cwt | 18.7 tonnes |
| Length | 27 ft 3 in | 8.3 m |
| Wheel Dia. | 3 ft 0 in | 91.4 cm |
| Minimum radius | 330 ft | 100 m |
| Maximum speed | 25 mph | 40 km/h |
| Cylinders | Two | |
| Cylinder Dia. | 11 / 11.5 in | 279 / 292 mm |
| Cylinder Stroke | 1 ft 6 in | 457 mm |
| Heating Surface | 407.6 sq ft | 37.87 m² |
| Grate Surface | 7.5 sq ft | 0.7 m² |
| Boiler pressure | 145 psi | 10.0 bar |
| Brake type | Handbrake; Carpenter from 1900 | |
| Water Tank | 460 imperial gal | 2100 litres |
| Coal Capacity | 1760 lb | 800 kg |
| Heating Type | None | |
NSB Class XXI is a steam locomotive class designed by the Norwegian State Railways exclusively for use on the Setesdalsbanen.
