LNER Thompson Class O1
Encyclopedia
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 has survived to preservation.
restrictions on new-build locomotives, they were rebuilds of LNER Class O4
"ROD" 2-8-0
s 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, and 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 Great Central Railway Class 8K design was the incorporation of a standard LNER 100A boiler, Walschaerts valve gear and new cylinders.
London and North Eastern Railway
The London and North Eastern Railway was the second-largest of the "Big Four" railway companies created by the Railways Act 1921 in Britain...
(LNER) Thompson Class O1 was a class of 2-8-0
2-8-0
Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and no trailing wheels...
steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
designed by Edward Thompson
Edward Thompson (engineer)
Edward Thompson was Chief Mechanical Engineer of the London and North Eastern Railway between 1941 and 1946.- Biography :Edward Thompson was the son of an assistant master at Marlborough College. He was educated at Marlborough before taking the Mechanical Science Tripos at Pembroke College,...
for freight work. None has survived to preservation.
Construction
Because of wartimeWorld War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
restrictions on new-build locomotives, they were rebuilds of LNER Class O4
LNER Class O4
The London and North Eastern Railway Class O4 initially consisted of the 131 ex-Great Central Railway Class 8K 2-8-0 steam locomotives acquired on grouping in 1923. The engines were designed by John G...
"ROD" 2-8-0
2-8-0
Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle , eight powered and coupled driving wheels on four axles, and no trailing wheels...
s built before and during World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
, although most of the locomotive was replaced during this rebuild. The first LNER rebuild took place in February 1944, and 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 Great Central Railway Class 8K design was the incorporation of a standard LNER 100A boiler, Walschaerts valve gear and new cylinders.
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.