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 The London and North Eastern Railway (LNER) Class O4 initially consisted of the 131 ex-Great Central Railway (GCR) Class 8K 2-8-0 steam locomotives acquired on grouping in 1923. The engines were designed by John G. Robinson and built at the GCR' ...

"ROD" 2-8-0s built before and during

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

, 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. 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 The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgian railway engineer Egide Walschaerts in 1844. The gear is sometimes named without the final "s", since it ...

and new cylinders. The locomotives kept the same numbers those being locomotives 3571, 3578-3579, 3589, 3592, 3596, 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.

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.

Preservation

None of the Thompson O1s have been secured for preservation.

Models

Hornby make models of the O1s in OO gauge. 63760 LNER Class O1 2-8-0 locomotive

References

External links

The Thompson O1 2-8-0 Locomotives
''LNER encyclopedia''
Class O1 Details
at ''Rail UK'' {{LNER Locomotives O1 Thompson 2-8-0 locomotives Railway locomotives introduced in 1944 Scrapped locomotives Standard gauge steam locomotives of Great Britain 1′D h2 locomotives Freight locomotives