NER Class W

NER Class W
Type and origin
Power type Steam
Designer Wilson Worsdell
Builder Gateshead Works
Build date 1907–08
Total produced 10
Specifications
Configuration 4-6-0T
UIC class 2′C n2t
Gauge 4 ft 8 12 in (1,435 mm)
Wheelbase 26 ft 3 in (8.001 m)
Length 40 ft 8 12 in (12.408 m)
Adhesive weight 52 long tons (53 t; 58 short tons)
Loco weight 69.85 long tons (70.97 t; 78.23 short tons)
Fuel type Coal
Fuel capacity 2.25 long tons (2.29 t; 2.52 short tons)
Water cap 1,500 imp gal (6,800 l; 1,800 US gal)
Firebox:
  Firegrate area
23 sq ft (2.1 m2)
Boiler pressure 170 lbf/in2 (1.17 MPa)
Heating surface 1,312 sq ft (121.9 m2)
  Tubes 1,182 sq ft (109.8 m2)
  Firebox 130 sq ft (12 m2)
Cylinders Two, inside
Cylinder size 19 in × 26 in (483 mm × 660 mm)
Valve gear Stephenson
Career
Operators North Eastern Railway
Numbers 686–695
Disposition All rebuilt as Class W1 (1914–1917)
[1]

The NER Class W was a class of ten 4-6-0T locomotives built by the North Eastern Railway at their Gateshead Works between 1907 and 1908. They were all rebuilt as Class W1 4-6-2T locomotives between 1914 and 1917.

The ten locomotives were built in one batch, and were numbered 686 to 695. They were designed for the Scarborough to Whitby line, on which the Class O 0-4-4T locomotives then in use were having difficulty with the traffic, especially the three-mile (4.8 km) section of 1 in 40 (2.5%).[2] However, the low fuel and water capacity was a barrier to operational efficiency, and so between September 1914 and January 1917 the whole class was rebuilt as 4–6–2T locomotives and reclassified W1.

Only one batch was built as the design was soon superseeded by the Class D 4-4-4T.

Table of locomotives
NER No. Works No. Date built Date rebuilt
686 84 December 1907 May 1915
687 85 December 1907 January 1917
688 86 December 1907 September 1914
689 87 January 1908 May 1915
690 88 February 1908 August 1916
691 89 March 1908 June 1915
692 90 March 1908 May 1916
693 91 March 1908 February 1916
694 92 April 1908 May 1915
695 93 April 1908 July 1915

References

  1. Fry 1964, pp. 11–13.
  2. Fry 1964, pp. 11–12.


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