Indian locomotive class WM

Indian WM

Vulcan Foundry works photo of EIR no. 2211.

Vulcan Foundry works photo of EIR no. 2211.
Type and origin
Power type Steam
Builder
Build date 1939, 1951, 1953, 1954
Total produced
  • 70 new
  • 4 ex WV
Specifications
Configuration 2-6-4T
UIC class 1′C2′h2t
Gauge 5 ft 6 in (1,676 mm)
Driver dia. 5 ft 7 in (1,702 mm)
Axle load 16.25 long tons (16.51 t; 18.20 short tons)
Loco weight 96.6 long tons (98.2 t; 108.2 short tons)
Fuel type Coal
Fuel capacity 6.5 long tons (6.6 t; 7.3 short tons)
Water cap 3,000 imp gal (14,000 l; 3,600 US gal)
Firebox:
 • Firegrate area		 24.6 sq ft (2.29 m2)
Boiler pressure 210 psi (1.45 MPa)
Heating surface 965 sq ft (89.7 m2)
Superheater:
 ​
 • Type AX pattern (21 A-type elements)
 • Heating area 230 sq ft (21 m2)
Cylinders Two, outside
Cylinder size 16 in × 28 in (406 mm × 711 mm)
Valve gear Walschaerts
Performance figures
Tractive effort 19,100 lbf (84.96 kN)
Factor of adh. 5.68
Career
Operators Indian Railways
Number in class 70 + 4
Numbers 13000–13073
[1][2][3]

The Indian locomotive class WM was a class of 2-6-4T tank locomotives used on broad gauge lines in India from 1942.[2][4][5] A total of 70 of them were delivered new, and another four were converted from existing class WV engines.[1]

The ten prototypes of the WM class, the first 30 production units, and the four WV class locomotives that were later converted to WMs, were built by Vulcan Foundry in Newton-le-Willows, Lancashire, England. The remaining 30 WM class engines were built by Robert Stephenson and Hawthorns in North East England.[1]

See also

References

Notes

  1. 1 2 3 Hughes 1996, p. 23.
  2. 1 2 "Indian Railways 5 ft. 6 in. Gauge 1952 2-6-4T (WM) brochure". Vulcan Foundry. Archived from the original (PDF) on 11 July 2013. Retrieved 11 July 2013.
  3. ↑ "Indian Government Railways Thirty 2-6-4 Type, "WM" Class Side Tank Locomotives 5 ft. 6 in. Gauge". Vulcan Magazine. Vulcan Foundry. 2 (4): 16–17. December 1951. Archived from the original on 11 July 2013. Retrieved 11 July 2013.
  4. ↑ Hughes 1976, p. 21.
  5. ↑ Marshall 2009, pp. 88.

Bibliography

  • Hughes, Hugh (1976). Steam in India. Truro, Cornwall: D. Bradford Barton Ltd. ISBN 0851532586. 
  • Hughes, Hugh (1996). Indian Locomotives: Part 4 – 1941–1990. Harrow, Middlesex: The Continental Railway Circle. ISBN 0-9521655-1-1. 
  • Marshall, Lawrence G (2009). Indian Broad Gauge Steam Remembered. East Harling, Norfolk: Taverner Publications. ISBN 9781901470154. 

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