LNER Thompson Class O1

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LNER Thompson Class O1
Killamarsh Central station geograph-2465092-by-Ben-Brooksbank.jpg
No. 63786, rebuilt from ex-GC Class O4 No. 6515 at Killamarsh 1963
Type and origin
Power typeSteam
Designer Edward Thompson
RebuilderLNER
Rebuild date1944–49
Number rebuilt58
Specifications
Configuration:
   Whyte 2-8-0
   UIC 1'D
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.4 ft 8 in (1.422 m)
Loco weight73.3 long tons (74.5 t; 82.1 short tons)
Fuel type Coal
Boiler pressure225 psi (1.55 MPa)
Cylinders Two, outside
Cylinder size 20 in × 26 in (508 mm × 660 mm)
Performance figures
Tractive effort 35,520 lbf (158.0 kN)
Career
Class London and North Eastern Railway
British Railways
Power class8F
Axle load class Route Availability 6
Locale
Withdrawn1962–1965
DispositionAll 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.

Contents

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]

Related Research Articles

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References

  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. https://www.railuk.info/steam/getsteamclass.php?item=O1 [ bare URL ]
  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.