NER Class W1

NER Class W1
LNER Class A6
Type and origin
Power type Steam
Designer Wilson Worsdell / Vincent Raven
Builder Gateshead Works
Build date 1907–1908
Total produced 10
Rebuild date 1914–1917
Number rebuilt 10
Specifications
Configuration:
 ​
 • Whyte 4-6-2T
 • UIC 2′C1′ n2t / 2′C1′ h2t
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Leading dia. 3 ft 1 1⁄4 in (0.946 m)
Driver dia. 5 ft 1 1⁄4 in (1.556 m)
Trailing dia. 3 ft 9 1⁄4 in (1.149 m)
Length 43 ft 10 3⁄4 in (13.379 m)
Loco weight
  • Saturated: 78.00 long tons (79.25 t; 87.36 short tons)
  • Superheated: 79.00 long tons (80.27 t; 88.48 short tons)
Fuel type Coal
Fuel capacity 4.00 long tons (4.06 t; 4.48 short tons)
Water cap 1,893 imp gal (8,610 l; 2,273 US gal)
Firebox:
 • Firegrate area		 23 sq ft (2.1 m2)
Boiler pressure 175 lbf/in2 (1.21 MPa)
Cylinders Two, inside
Cylinder size 19 in × 26 in (483 mm × 660 mm)
Valve gear Stephenson
Valve type 8 3⁄4-inch (222 mm) piston valves
Performance figures
Tractive effort 22,830 lbf (101.55 kN)
Career
Operators
Power class BR: 4P
Axle load class LNER/BR: Route availability 4
Withdrawn 1947–1953
Disposition All scrapped
[1]

The NER Class W1 was a 4-6-2T steam locomotive of the North Eastern Railway. The class was introduced in 1914 as a rebuild of Wilson Worsdell's NER Class W 4-6-0T (introduced 1907). At the 1923 Grouping, they all passed to the London and North Eastern Railway, who placed them in their Class A6.

Modifications

Seven of the locomotives were fitted with superheaters between 1937 and 1944.[2]

British Railways

One locomotive was withdrawn in 1947 but the remaining nine passed to British Railways in 1948 and were numbered as follows:

  • Superheated: 69791-69793 and 69796-69797
  • Non-superheated: 69794-69795 and 69798

Withdrawal

One locomotive was withdrawn in 1947 and the others had all been withdrawn by the end of 1951. None are preserved.

Table of locomotives[3]
NER no.Date rebuiltDate superheatedLNER 1946 No.BR No.Date withdrawnNotes
686May 1915May 19449790—Jun 1947
687Jan 1917May 1943979169791Aug 1951
688Sep 1914Dec 1944979269792Feb 1948Withdrawn before BR number applied
689May 1915Aug 1937979369793Apr 1951
690Aug 1916—979469794Aug 1951
691Jun 1915—979569795Jul 1950
692May 1916Sep 1937979669796Mar 1953
693Feb 1916Jan 1937979769797Aug 1951
694May 1915—979869798Feb 1951
695Jul 1915Jan 1937979969799Feb 1950Withdrawn before BR number applied

References

  1. ↑ Fry 1964, p. 12.
  2. ↑ "The Wilson Worsdell A6 Pacific Tank Locomotives". LNER Encyclopedia.
  3. ↑ Fry 1964, pp. 12, 15.
  • 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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