NER Class D

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  • NER Class D
  • LNER Class H1
Image from page 447 of "Railway mechanical engineer" (1916).jpg
Type and origin
Power typeSteam
Designer Vincent Raven
Builder NER Darlington
Build date1913, 1920—1922
Total produced45
Specifications
Configuration:
   Whyte 4-4-4T
Gauge 4 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)
Wheelbase 34 ft 6 in (10.52 m)
Loco weight87.35 long tons (88.75 t; 97.83 short tons)
Fuel type Coal
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)
Cylinders three
Cylinder size 16+12 in × 26 in (419 mm × 660 mm)
Valve gear Stephenson
Performance figures
Tractive effort 22,940 lbf (102.0 kN)
Career
Operators North 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

  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. 1 2 Casserley, H.C.; Asher, L.L. (1961) [1955]. Locomotives of British Railways. Spring Books. pp. 113, 472.