NSB Class 49

The NSB Class 49, nicknamed Dovregubben ("the Dovre Giant"), locomotives were 2-8-4 steam locomotives used to pull heavy trains on the Dovre Line. It is the largest type of steam locomotive in the history of the Norwegian State Railways.

NSB Type 49
Dovregubben at Oppdal station 1935
Type and origin Power type Steam Builder Hamar & Thune (3), Krupp, (2) Thune (2) Build date 1935–1941 Total produced 7
Specifications Configuration: ​  • Whyte 2-8-4  • UIC 1′D2′h4v Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Driver dia. 1,525 mm (60.04 in) Axle load 17.5 t (17.2 long tons; 19.3 short tons) Adhesive weight 62.4 t (61.4 long tons; 68.8 short tons) Loco weight 87.2 t (85.8 long tons; 96.1 short tons) Tender weight 17.4 t (17.1 long tons; 19.2 short tons) Fuel type Coal Fuel capacity 8.4 t (8.3 long tons; 9.3 short tons) Water cap. 27.2 t (26.8 long tons; 30.0 short tons) Boiler pressure 241.8 psi (17.00 kp/cm2; 1,667 kPa) Heating surface 256 m2 (2,760 sq ft) Superheater: ​  • Heating area 102 m2 (1,100 sq ft) High-pressure cylinder 465 mm × 650 mm (18.31 in × 25.59 in) Low-pressure cylinder 720 mm × 700 mm (28.35 in × 27.56 in)
Performance figures Maximum speed 90 km/h (56 mph) Power output 2,600 bhp (1,900 kW) Tractive effort 468kN
Career Operators NSB Class Type 49 Number in class 7 Numbers 463, 464, 465, 470, 471, 472 and 473 Nicknames Dovregubber Retired 1958 Preserved No 470

The engines came in three series, the 49a, 49b and 49c. Between 1935 and 1941 five engines were produced by Hamar & Thune, two by Krupp AG. In addition to the seven engines delivered, there were seven engines which were destroyed by a bombing raid during World War II while under construction in Germany, another four were under construction at Thune but were never completed. The engines were retired from service during 1957, stored and finally written off on December 16, 1958, due to dieselization of the Dovre Line.

The numbers of the Dovregubben locomotives were 463, 464, 465, 470, 471, 472 and 473. Engine no. 470 is on display at the Norwegian Railway Museum in Hamar.

Specifications

• Length:
  • a-series: 22.0 m (72 ft 2+1⁄8 in)
  • b-series: 22.0 m (72 ft 2+1⁄8 in)
  • c-series: 22.3 m (73 ft 2 in)
• Weight of engine:
  • a-series: 87.2 t (85.8 long tons; 96.1 short tons)
  • b-series: 92.7 t (91.2 long tons; 102.2 short tons)
  • c-series: 88.6 t (87.2 long tons; 97.7 short tons)
• Weight of tender:
  • a-series: 17.4 t (17.1 long tons; 19.2 short tons)
  • b-series: 17.4 t (17.1 long tons; 19.2 short tons)
  • c-series: 18.4 t (18.1 long tons; 20.3 short tons)

See also

2-8-4-engines of Norway

References

• Jernbane.net entry on Class 49 (in Norwegian)