LNER Thompson Class A2/1

< LNER Thompson Class A2
Disambiguation: LNER Thompson Class A2

LNER Thompson Class A2/1
60507 'Highland Chieftain' waits for departure at Carlisle in August 1960.
Type and origin
Power typeSteam
DesignerEdward Thompson
BuilderDarlington Works
Build date1944
Total produced4
Specifications
Configuration:
​
 • Whyte4-6-2
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.6 ft 2 in (1.880 m)
Loco weight98 long tons (100 t)
Boiler pressure225 psi (1.55 MPa)
CylindersThree
Cylinder size19 in × 26 in (483 mm × 660 mm)
Performance figures
Tractive effort36,385 lbf (161.85 kN)
Career
OperatorsLondon and North Eastern Railway
British Railways
ClassA2/1
Power class7P6F
NumbersLNER (1944): 3696-3699; LNER (from 1945): 507-510
BR: 60507-60510
LocaleEast Coast Main Line
Withdrawn1960–1961
DispositionAll scrapped

The London and North Eastern Railway (LNER) Thompson Class A2/1 was a class of 4-6-2 steam locomotives built at Darlington locomotive works during 1944. They were originally ordered as Class V2 locomotives, as designed by Sir Nigel Gresley, but were revised during construction into a 4-6-2 'Pacific' arrangement under the instruction of Edward Thompson.

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