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NER Class G

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NER Class G
LNER Class D23
Type and origin
Power typeSteam
DesignerThomas William Worsdell
BuilderNER Darlington Works
Build date1887-1888
Total produced20
Specifications
Configuration:
 • Whyte4-4-0
Gauge4 ft 8+12 in (1,435 mm)
Leading dia.3 ft 1+14 in (0.946 m)
Driver dia.6 ft 1+14 in (1.861 m)
Fuel typecoal
Boiler4 ft 3 in (1.30 m) diameter
Boiler pressure160 psi (1.1 MPa)
Cylinderstwo inside
Cylinder size18 in × 24 in (460 mm × 610 mm)
Valve gearStephenson
Performance figures
Tractive effort14,437 lbf (64.22 kN)
Career
OperatorsNorth Eastern Railway
London and North Eastern Railway
DispositionNone preserved

The NER Class G (LNER Class D23) was a class of 4-4-0 steam locomotives of the North Eastern Railway. It was designed by Thomas William Worsdell and introduced in 1887.

History

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The engines were built as Class G1 2-4-0s. They had simple expansion cylinders, slide valves, and Joy valve gear. Twenty locomotives were built at Darlington Works in 1887-1888. They were initially classed as "G1" to leave the classification "G" available for a compound version. However, the compound version was not built and they were reclassified as "G" in 1914.[1]

Modifications

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Between 1900 and 1904, they were rebuilt as 4-4-0s. At the same time, they were fitted with piston valves and Stephenson valve gear. Superheaters were fitted between 1913 and 1916.

Use

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The engines were initially used for secondary passenger duties. By the time of the 1923 Grouping, they were working local passenger services.

Withdrawal

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Withdrawals took place between 1929 and 1935 and none were preserved.

References

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  1. ^ "The T.W.Worsdell Class D23 (NER Class G) 4-4-0 Locomotives". LNER Encyclopedia.