NER Class D

NER Class D
LNER Class H1
Type and origin
Power type Steam
Designer Vincent Raven
Builder NER Darlington
Build date 1913,1920—1922
Total produced 45
Specifications
Configuration 4-4-4T
Gauge 1,435 mm (4 ft 8 1⁄2 in)
Leading wheel
diameter		 3 ft 1 1⁄4 in (0.946 m)
Driver diameter 5 ft 9 in (1.75 m)
Trailing wheel
diameter		 3 ft 1 1⁄4 in (0.946 m)
Wheelbase 34 ft 6 in (10.52 m)
Locomotive weight 87.35 long tons (88.75 t)
Fuel type coal
Fuel capacity 4 long tons (4.1 t)
Water capacity 2,000 imp gal (9,100 l; 2,400 US gal)
Boiler pressure 160 psi (1.1 MPa)
Firegrate area 23 sq ft (2.1 m2)
Heating surface:
– Tubes		 654.24 sq ft (60.781 m2)
– Flues 280.6 sq ft (26.07 m2)
– Firebox 124 sq ft (11.5 m2)
– Total 1,252.974 sq ft (116.4051 m2)
Superheater type Schmidt
Cylinders three
Cylinder size 16 1⁄2 in × 26 in (420 mm × 660 mm)
Valve gear Stephenson
Performance figures
Tractive effort 22,940 lbf (102.0 kN)
Career
Operator(s) North Eastern Railway, London & North Eastern Railway
Retired 1931-1936
Disposition All 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. pp. 338.
  2. ↑ "NER Raven H1 4-4-4T Locomotives". LNER Encyclopedia.
  3. ↑ 3.0 3.1 Casserley, H.C.; Asher, L.L. (1961) [1955]. Locomotives of British Railways. Spring Books. pp. 113, 472.