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Class of six British 2-6-4T locomotives
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: • Grate area 25 sq ft (2.3 m2 ) Boiler pressure 200
psi (1.38
MPa )
superheated Heating surface: • Firebox 135 sq ft (12.5 m2 ) • Tubes 1,017 sq ft (94.5 m2 ) • Flues 356 sq ft (33.1 m2 ) Superheater: • Heating area 285 sq ft (26.5 m2 )
Cylinders Two, outside
Cylinder size 19 in × 28 in (483 mm × 711 mm)
Valve gear
Walschaerts Valve type 10 in (254 mm)
piston valves
The Metropolitan Railway K Class consisted of six
2-6-4 T
steam locomotives , numbered 111 to 116.
[1]
Construction
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
Richard Maunsell .
[2] Final design was by the Metropolitan Railway's George Hally.
[3] The boilers had been made by
Robert Stephenson and Company of Darlington.
[4] Some unusual variations included footsteps below the buffer beam and curved handrails at the front either side of the smokebox.
[2]
Service
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 they 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] 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.
[3]
Withdrawal
All were withdrawn and scrapped between 1943 and 1948.
[2]
References
^
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 .
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