NER Class G

Specifications
Specifications
Configuration:;
• Whyte	4-4-0
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 1+1⁄4 in (0.946 m)
Driver dia.	6 ft 1+1⁄4 in (1.861 m)
Fuel type	coal
Boiler	4 ft 3 in (1.30 m) diameter
Boiler pressure	160 psi (1.1 MPa)
Cylinders	two inside
Cylinder size	18 in × 24 in (460 mm × 610 mm)
Valve gear	Stephenson

Type and origin
Type and origin
Power type	Steam
Designer	Thomas William Worsdell
Builder	NER Darlington Works
Build date	1887-1888
Total produced	20

NER Class G
LNER Class D23
NER Class G; LNER Class D23
Power type
Type and origin
Power type	Steam
Designer	Thomas William Worsdell
Builder	NER Darlington Works
Build date	1887-1888
Total produced	20
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 1+1⁄4 in (0.946 m)
Driver dia.	6 ft 1+1⁄4 in (1.861 m)
Fuel type	coal
Boiler	4 ft 3 in (1.30 m) diameter
Boiler pressure	160 psi (1.1 MPa)
Cylinders	two inside
Cylinder size	18 in × 24 in (460 mm × 610 mm)
Valve gear	Stephenson
Tractive effort
Performance figures
Tractive effort	14,437 lbf (64.22 kN)
Operators
Career
Operators	North Eastern Railway; London and North Eastern Railway
Withdrawn	1929-1935
Disposition	None preserved

The NER Class G (LNER Class D23) was a class of 2-4-0 steam locomotives of the North Eastern Railway. It was designed by Thomas William Worsdell and introduced in 1887.

History

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

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

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

Withdrawal

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

References

^ "The T.W.Worsdell Class D23 (NER Class G) 4-4-0 Locomotives". LNER Encyclopedia. Archived from the original on 21 December 2014. Retrieved 16 December 2014.

[1] "The T.W.Worsdell Class D23 (NER Class G) 4-4-0 Locomotives". LNER Encyclopedia. Archived from the original on 21 December 2014. Retrieved 16 December 2014.

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