Metropolitan Railway K Class

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Metropolitan Railway K Class
LNER Class L2
Metropolitan Railway 2-6-4T locomotive (CJ Allen, Steel Highway, 1928).jpg
No. 114, circa 1928
Type and origin
Power type Steam
Builder Armstrong Whitworth
Build date 1925
Configuration 2-6-4T
UIC classification 1'C2'ht
Leading wheel
37 in (940 mm)
Driver diameter 66 in (1,700 mm)
Trailing wheel
37 in (940 mm)
Wheelbase 36 ft 7 in (11,150 mm)
Axle load 18.45 long tons (18.7 t)
Locomotive weight 87.35 long tons (88.8 t)
Fuel type Coal
Fuel capacity 4.00 long tons (4.1 t)
Water capacity 2,000 imp gal (9,100 l)
Boiler pressure 200 psi (1.38 MPa) superheated
Firegrate area 25 sq ft (2.3 m2)
Heating surface:
– Tubes
1,017 sq ft (94.5 m2)
– Flues 356 sq ft (33.1 m2)
– Firebox 135 sq ft (12.5 m2)
Superheater area 285 sq ft (26.5 m2)
Cylinders Two, outside
Cylinder size 19×28 in (487×711 mm)
Valve gear Walschaerts, 10 in (254 mm) piston valves
Performance figures
Tractive effort 26,036 lbf (115.81 kN)
Operator(s) Metropolitan Railway
London and North Eastern Railway
Class MET: K
Number in class 6
Number(s) MET:111–116
LNER 6158–6163
Retired 1943–1948
Disposition All scrapped

The Metropolitan Railway K Class consisted of six 2-6-4T steam locomotives, numbered 111 to 116.[1] They were built by Armstrong Whitworth in 1925 using parts manufactured at the Royal Arsenal, Woolwich, to the design of the South Eastern and Chatham Railway N Class 2-6-0 locomotives. The boilers had been made by Robert Stephenson and Company of Darlington.


The K Class were used on heavy freight trains along London's Metropolitan Railway mainline, including coal to the power station at Neasden,[1] although there were used on occasional passenger trains. In 1937, all six were transferred to the London and North Eastern Railway (LNER) where they were based at Neasden (LNER) Shed. The LNER numbered them 6158–6163 and classified them as L2 Class.[1]


All were withdrawn and scrapped between 1943 and 1948.


  1. ^ a b c Casserley, H.C. (1977). The Later Years of Metropolitan Steam. Truro: D.Bradford Barton. pp. 7, 34–39. ISBN 0-85153-327-2. 

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