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NER Class D

From Wikipedia, the free encyclopedia

  • NER Class D
  • LNER Class H1
Type and origin
Power typeSteam
DesignerVincent Raven
BuilderNER Darlington
Build date1913, 1920—1922
Total produced45
Specifications
Configuration:
 • Whyte4-4-4T
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.3 ft 1+14 in (0.946 m)
Driver dia.5 ft 9 in (1.753 m)
Trailing dia.3 ft 1+14 in (0.946 m)
Wheelbase34 ft 6 in (10.52 m)
Loco weight87.35 long tons (88.75 t; 97.83 short tons)
Fuel typeCoal
Fuel capacity4 long tons (4.1 t; 4.5 short tons)
Water cap.2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
 • Grate area23 sq ft (2.1 m2)
Boiler pressure160 psi (1.1 MPa)
Heating surface:
 • Firebox124 sq ft (11.5 m2)
 • Tubes654.24 sq ft (60.781 m2)
 • Flues280.6 sq ft (26.07 m2)
 • Total surface1,252.974 sq ft (116.4051 m2)
Superheater:
 • TypeSchmidt
 • Heating area194.13 sq ft (18.035 m2)
Cylindersthree
Cylinder size16+12 in × 26 in (419 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort22,940 lbf (102.0 kN)
Career
OperatorsNorth Eastern Railway, London and North Eastern Railway
Retired1931-1936
DispositionAll rebuilt to LNER Class A8

The North Eastern Railway Class D (later London and North Eastern Railway (LNER) Class H1) was a class of 4-4-4T three-cylinder side tank steam locomotive designed by Vincent Raven in 1913.[1] They were used for rural passenger services. Forty five were built in total; a first batch of twenty, then a further twenty five after the War.[2]

Between 1931 and 1936, all of the LNER H1 class were rebuilt with a 4-6-2T wheel layout and re-classified as A8.[3] They were scrapped between 1957 and 1960.[3]

References

[edit]
  1. ^ Ahrons, E. L. (1927). The British Steam Railway Locomotive 1825-1925. Amen Corner, London: Locomotive Publishing Co. p. 338.
  2. ^ "NER Raven H1 4-4-4T Locomotives". LNER Encyclopedia.
  3. ^ a b Casserley, H.C.; Asher, L.L. (1961) [1955]. Locomotives of British Railways. Spring Books. pp. 113, 472.