Metropolitan Railway K Class LNER Class L2
No. 114, circa 1928
Specifications Configuration: • Whyte 2-6-4T • UIC 1'C2'ht Leading dia. 37 in (940 mm) Driver dia. 5 ft 6 in (1,680 mm) Trailing dia. 37 in (940 mm) Wheelbase 36 ft 7 in (11,150 mm) Axle load 18.45 long tons (18.75 t; 20.66 short tons) Loco weight 87.35 long tons (88.75 t; 97.83 short tons) Fuel type Coal Fuel capacity 4.00 long tons (4.06 t; 4.48 short tons) Water cap 2,000 imp gal (9,100 L; 2,400 US gal) Firebox: • Firegrate area 25 sq ft (2.3 m 2) Boiler pressure 200 psi (1.38 MPa) superheated Heating surface: • Tubes 1,017 sq ft (94.5 m 2) • Flues 356 sq ft (33.1 m 2) • Firebox 135 sq ft (12.5 m 2) Superheater: • Heating area 285 sq ft (26.5 m 2) Cylinders Two, outside Cylinder size 19 in × 28 in (483 mm × 711 mm) Valve gear Walschaerts Valve type 10 in (254 mm) piston valves
Metropolitan Railway K Class consisted of six 2-6-4T steam locomotives, numbered 111 to 116.
Construction [ edit ]
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 and part of a family of 200 or so "mogul" engines designed by R.E.L. Maunsell. Final design was by the Metropolitan Railway's George Hally.  The boilers had been made by  Robert Stephenson and Company of Darlington. Some unusual variations included footsteps below the buffer beam and curved handrails at the front either side of the smokebox. 
Service [ edit ]
K Class were used on heavy freight trains along London's Metropolitan Railway mainline, including coal to the power station at Neasden, 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. They were used for passenger services for a short stint in 1938 and 1942 when  H2 4-4-4T's were unavailable for maintenance or transferred elsewhere.
Withdrawal [ edit ]
All were withdrawn and scrapped between 1943 and 1948.
References [ edit ]
^ 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
^ a b c
Swift, Peter (2012). Maunsell Moguls. Ian Allan. pp. 86–90. ISBN . 9780711034006
^ a b
"The Maunsell / Hally Class L2 (Metropolitan Class K) 2-6-4T Tank Locomotives". The London & North Eastern Railway Encyclopedia. Archived from the original on 26 August 2018 . Retrieved . 20 May 2019
Boddy, M.G.; Brown, W.A.; Fry, E.V.; Hennigan, W.; Hoole, Ken; Manners, F.; Neve, E.; Platt, E.N.T.; Proud, P.; Yeadon, W.B. (March 1977). Fry, E.V. (ed.). Locomotives of the L.N.E.R., part 9A: Tank Engines - Classes L1 to N19. Kenilworth: RCTS. p. 10. ISBN . 0-901115-40-1