LNER Class U1

Specifications
Specifications
Configuration:;
• Whyte	2-8-0+0-8-2
• UIC	1'D(D1')h6
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	2 ft 8 in (0.813 m)
Driver dia.	4 ft 8 in (1.422 m)
Length	87 ft 3 in (26.59 m)
Loco weight	178 long tons (181 t; 199 short tons)
Fuel type	Coal
Fuel capacity	7 long tons (7.1 t; 7.8 short tons)
Water cap.	5,000 imp gal (23,000 L; 6,000 US gal)
Firebox:
• Grate area	56.5 sq ft (5.25 m2)
Boiler pressure	180 lb/sq in (13 kg/cm2; 1,200 kPa)
Cylinders	6 (2 outside and 1 inside at each end)
Cylinder size	18+1⁄2 in × 26 in (470 mm × 660 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Nigel Gresley
Builder	Beyer, Peacock and Company
Serial number	6209
Build date	1925
Total produced	1

LNER Class U1
LNER Class U1
	No. 2395, in photographic grey, in 1925
Power type
Type and origin
Power type	Steam
Designer	Nigel Gresley
Builder	Beyer, Peacock and Company
Serial number	6209
Build date	1925
Total produced	1
Configuration:;
Specifications
Configuration:;
• Whyte	2-8-0+0-8-2
• UIC	1'D(D1')h6
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	2 ft 8 in (0.813 m)
Driver dia.	4 ft 8 in (1.422 m)
Length	87 ft 3 in (26.59 m)
Loco weight	178 long tons (181 t; 199 short tons)
Fuel type	Coal
Fuel capacity	7 long tons (7.1 t; 7.8 short tons)
Water cap.	5,000 imp gal (23,000 L; 6,000 US gal)
Firebox:
• Grate area	56.5 sq ft (5.25 m2)
Boiler pressure	180 lb/sq in (13 kg/cm2; 1,200 kPa)
Cylinders	6 (2 outside and 1 inside at each end)
Cylinder size	18+1⁄2 in × 26 in (470 mm × 660 mm)
Tractive effort
Performance figures
Tractive effort	72,940 lbf (324,500 N)
Operators
Career
Operators	London and North Eastern Railway; British Railways
Class	LNER: U1
Locale	North Eastern Region
Retired	1955
Disposition	Scrapped

The London and North Eastern Railway Class U1 was a solitary 2-8-0+0-8-2 Garratt locomotive designed for banking coal trains over the Worsborough Bank, a steeply graded line in South Yorkshire and part of the Woodhead Route. It was both the longest and the most powerful steam locomotive ever to run in Britain. It was built in 1925 with the motion at each end being based on an existing 2-8-0 design. The original number was 2395, and it was renumbered 9999 in March 1946, and then 69999 after nationalisation in 1948, although it retained its cab-side plate bearing its original number throughout its life. The locomotive ran for some time as an oil burner, and was tried out on the Lickey Incline in 1949–1950 and again, after the electrification of its home line, in 1955. These trials were unsuccessful, and so the locomotive was withdrawn in 1955 and scrapped.

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