LNER Thompson Class Q1

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LNER Thompson Class Q1
Type and origin
Power typeSteam
DesignerEdward Thompson (rebuild)
Rebuild date1942–1945
Number rebuilt13
Specifications
Configuration:
​
 • Whyte0-8-0T
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.4 ft 8 in (1.422 m)
Loco weightQ1/1: 69.9 long tons (71.0 t; 78.3 short tons)
Q1/2: 73.65 long tons (74.83 t; 82.49 short tons)
Fuel typeCoal
Fuel capacityQ1/1: 4.5 long tons (4.6 t; 5.0 short tons)
Q1/2: 4 long tons (4.1 t; 4.5 short tons)
Water cap.Q1/1: 1,500 imp gal (6,800 l; 1,800 US gal)
Q1/2: 2,000 imp gal (9,100 l; 2,400 US gal)
Boiler pressure180 psi (1.2 MPa)
CylindersTwo outside
Cylinder size19 in × 26 in (483 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort25,645 lbf (114.07 kN)
Career
Operators
  • London and North Eastern Railway
  • → British Railways
ClassQ1
Power class5F
Withdrawn1954–1959
DispositionAll scrapped

The London and North Eastern Railway (LNER) Thompson Class Q1 was a class of 0-8-0T steam locomotives. They were rebuilds of the GCR Class 8A (LNER Class Q4) 0-8-0s. Thirteen were rebuilt between 1942 and 1945 at Gorton Works . All passed to British Railways in 1948, numbered 69925-69937. The sources for the information in the infobox (right) are.[1][2][3]

Overview[]

The locomotives had outside cylinders with inside valves and inside Stephenson valve gear. There were two variants:

  • Q1/1 (69925-69928) with 1,500-imperial-gallon (6,800 l; 1,800 US gal) tanks
  • Q1/2 (69929-69937) with 2,000-imperial-gallon (9,100 l; 2,400 US gal) tanks

The extra 500 imperial gallons (2,300 l; 600 US gal) of water in the Q1/2 was carried in the rear tank, under the coal bunker, resulting in a reduced coal capacity.

Withdrawal[]

All the Class Q1 locomotives were withdrawn and scrapped from 1954 to 1959. None have been preserved.

References[]

  1. ^ Ian Allan ABC of British Railways Locomotives, part 4 (1948 ed.). p. 56. ISBN 978-0-7110-0401-6.
  2. ^ "The Thompson Q1 0-8-0T Locomotives". The London & North Eastern (LNER) Encyclopedia.
  3. ^ Grafton 2007, pp. 43, 81 & 141.

Further reading[]

  • Willie Yeadon Yeadon's Register of LNER locomotives Vol 20: Class Q1, Q2, Q3 & Q4, & The Q1 Tank

Sources[]

  • Grafton, Peter (2007). Edward Thompson of the LNER. Usk: Oakwood Press. ISBN 978-0-85361-672-6. OL145.


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