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 ¹⁄₂ in (1,435 mm)
Wheelbase	26 ft 3 in (8.001 m)
Length	40 ft 8 ¹⁄₂ 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Only one batch was built as the design was soon superseded by the Class D 4-4-4T.

Table of locomotives
NER No.	Works No.	Date built	Date rebuilt
686	84	000000001907-12-01-0000December 1907	000000001915-05-01-0000May 1915
687	85	000000001907-12-01-0000December 1907	000000001917-01-01-0000January 1917
688	86	000000001907-12-01-0000December 1907	000000001914-09-01-0000September 1914
689	87	000000001908-01-01-0000January 1908	000000001915-05-01-0000May 1915
690	88	000000001908-02-01-0000February 1908	000000001916-08-01-0000August 1916
691	89	000000001908-03-01-0000March 1908	000000001915-06-01-0000June 1915
692	90	000000001908-03-01-0000March 1908	000000001916-05-01-0000May 1916
693	91	000000001908-03-01-0000March 1908	000000001916-02-01-0000February 1916
694	92	000000001908-04-01-0000April 1908	000000001915-05-01-0000May 1915
695	93	000000001908-04-01-0000April 1908	000000001915-07-01-0000July 1915

References

↑ Fry 1964, pp. 11–13.
↑ Fry 1964, pp. 11–12.

Fry, E. V., ed. (April 1964). Locomotives of the L.N.E.R., part 7: Tank Engines - Classes A5 to H2. Kenilworth: RCTS. ISBN 0-901115-13-4.

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