LNER Thompson Class O1

Specifications
Specifications
Configuration:;
• Whyte	2-8-0
• UIC	1'D
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	4 ft 8 in (1.422 m)
Loco weight	73.3 long tons (74.5 t; 82.1 short tons)
Fuel type	Coal
Boiler pressure	225 psi (1.55 MPa)
Cylinders	Two, outside
Cylinder size	20 in × 26 in (508 mm × 660 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Edward Thompson
Rebuilder	LNER
Rebuild date	1944–49
Number rebuilt	58

LNER Thompson Class O1
LNER Thompson Class O1
	No. 63786, rebuilt from ex-GC Class O4 No. 6515 at Killamarsh 1963
Power type
Type and origin
Power type	Steam
Designer	Edward Thompson
Rebuilder	LNER
Rebuild date	1944–49
Number rebuilt	58
Configuration:;
Specifications
Configuration:;
• Whyte	2-8-0
• UIC	1'D
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	4 ft 8 in (1.422 m)
Loco weight	73.3 long tons (74.5 t; 82.1 short tons)
Fuel type	Coal
Boiler pressure	225 psi (1.55 MPa)
Cylinders	Two, outside
Cylinder size	20 in × 26 in (508 mm × 660 mm)
Tractive effort
Performance figures
Tractive effort	35,520 lbf (158.0 kN)
Class
Career
Class	London and North Eastern Railway; British Railways
Power class	8F
Axle load class	Route Availability 6
Locale	Eastern Region; North Eastern Region;
Withdrawn	1962–1965
Disposition	All scrapped

The London and North Eastern Railway (LNER) Thompson Class O1 was a class of 2-8-0 steam locomotive designed by Edward Thompson for freight work. None have survived to preservation.

Construction

Because of wartime restrictions on new-build locomotives, they were rebuilds of LNER Class O4 "ROD" 2-8-0s built before and during World War I, although most of the locomotive was replaced during this rebuild. The first LNER rebuild took place in February 1944, at Gorton Works and a total of 58 locomotives were rebuilt to class O1 in total, with the last being locomotive 63856 in October 1949 during the early British Railways era, after which the programme was halted.^[1] The main modification to the original GCR Robinson Class 8K 2-8-0 design was the incorporation of a standard LNER 100A boiler, Walschaerts valve gear and new cylinders. The locomotives kept the same numbers those being locomotives 3571, 3575, 3578-3579, 3589-3592, 3594, 3596, 3610, 3619, 3630, 3646, 3650, 3652, 3663, 3670, 3676, 3678, 3687, 3689, 3711-3712, 3725, 3740, 3746, 3752, 3755, 3760, 3768, 3773, 3777, 3780, 3784, 3786, 3789, 3792, 3795-3796, 3803, 3806, 3808, 3817, 3838, 3854, 3856, 3863, 3865, 3867-3869, 3872, 3874, 3879, 3886-3887, 3890 and 3901.^[2]

British Railways

The locomotives passed to British Railways (BR) Eastern and North Eastern Regions on 1 January 1948 and were given BR running numbers in the range 63570-63920. However, this range included many unrebuilt O4s.^[3]

Preservation

None of the Thompson O1s have been secured for preservation.

Models

In 2013, Hornby Railways introduced an OO gauge model of the O1 in BR black livery.^[4]

References

^ Rowledge, J.W.P. (1977). Heavy Goods Engines of the War Department, Volume 1, ROD 2-8-0. Springmead Railway Books. pp. 66–68.
^ "O1". www.railuk.info. Archived from the original on 2 January 2024.
^ Ian Allan (Summer 1961). ABC of British Railways Locomotives, part 4. pp. 36–37.
^ Jones, Ben (February 2013). "Hornby LNER/BR 'O1' 2-8-0". Model Rail. No. 178. Peterborough: Bauer. pp. 22–24. ISSN 1369-5118. OCLC 173324502.

External links

The Thompson O1 2-8-0 Locomotives LNER encyclopedia
Class O1 Details at Rail UK

[1] Rowledge, J.W.P. (1977). Heavy Goods Engines of the War Department, Volume 1, ROD 2-8-0. Springmead Railway Books. pp. 66–68.

[2] "O1". www.railuk.info. Archived from the original on 2 January 2024.

[3] Ian Allan (Summer 1961). ABC of British Railways Locomotives, part 4. pp. 36–37.

[4] Jones, Ben (February 2013). "Hornby LNER/BR 'O1' 2-8-0". Model Rail. No. 178. Peterborough: Bauer. pp. 22–24. ISSN 1369-5118. OCLC 173324502.

[1]

[2]

[3]

[4]