LNER Thompson Class A2
LNER Thompson Class A2 may refer to: * LNER Thompson Class A2/1, four locomotives (nos. 3696-9, later 507-510) built new in 1944–45 and modified from class V2 during construction * LNER Thompson Class A2/2, six locomotives (nos. 2001-6, later 501-6) rebuilt from class P2 in 1943–44 * LNER Thompson Class A2/3, 15 locomotives (nos. 500, 511-524) built new in 1946–7 See also *LNER Class A2 *LNER Peppercorn Class A2 The London and North Eastern Railway (LNER) Peppercorn Class A2 is a class of steam locomotive designed for express passenger work by Arthur Peppercorn, the chief designer of the LNER after Edward Thompson. All save the first of the 15 bu ...

LNER Thompson Class A2/1
:''Disambiguation: LNER Thompson Class A2'' 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. Background At the time Edward Thompson succeeded Sir Nigel Gresley as Chief Mechanical Engineer of the LNER in April 1941, Darlington works was busy building Class V2 mixed traffic locomotives. Although the V2 class were competent and powerful locomotives, Thompson did not like this design as it required more servicing than his own mixed traffic B1 class 4-6-0. He also envisaged a time when the V2s would be replaced by his own design of 'Pacific' locomotives, but would not receive authority to build a new class during the war. He therefore decided to build the final four V2 already ...
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LNER Thompson Class A2/2
The London and North Eastern Railway Class A2/2 was a class of six 4-6-2 steam locomotives rebuilt by Edward Thompson in 1943 and 1944 from his predecessor's P2 Class of 2-8-2 express passenger locomotives. The rebuilds were not particularly successful and all were withdrawn and scrapped between 1959 and 1961. Background On taking up office as chief mechanical engineer of the London and North Eastern Railway in April 1941, Edward Thompson proposed an unstreamlined mixed traffic version of Nigel Gresley's A4 Class Pacifics with driving wheels, but new construction would not have been authorised at this time. He therefore rebuilt the six of his predecessor's 2-8-2 P2 Class express passenger locomotives as Pacific locomotives to try out his own thoughts on their design. The P2 Class 2-8-2s had been built between 1934 and 1936 for service between Edinburgh and Aberdeen and had proved to be powerful and capable locomotives. However, the long fixed wheelbase was not ideally suit ...
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LNER Thompson Class A2/3
:''Disambiguation: LNER Thompson Class A2'' The London and North Eastern Railway (LNER) Class A2/3 was a class of 4-6-2 steam locomotives. They were newly constructed locomotives, fulfilling the requirement identified by Edward Thompson for a standard express passenger locomotive of the 4-6-2 arrangement with driving wheels. Fifteen engines were constructed according to this original design, but following the retirement of Thompson as CME, the remaining fifteen locomotives that were planned were immediately redesigned and ultimately emerged as Peppercorn Class A2. Background When Edward Thompson was appointed chief mechanical engineer of the London and North Eastern Railway in April 1941, he envisaged a new standardisation programme involving ten locomotive designs including two Pacific types. These were an express passenger type (designated A1) with driving wheels and a 'heavy passenger and freight' type (designated A2) with driving wheels. He was not able to proceed with h ...
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LNER Class A2
The first London and North Eastern Railway (LNER) Class A2 was a class of 4-6-2 steam locomotive designed by Vincent Raven for the North Eastern Railway (as NER class 4.6.2). Two were built by the NER in 1922 before the grouping and another three by the LNER in 1924. Their LNER numbers were 2400–2404. All five locomotives were named by the LNER. Origins The NER was the largest and most prosperous of the railway companies that would make up the LNER from 1923 and provided the general manager of the new railway company. However the chief mechanical engineer of the NER, Sir Vincent Raven was at retirement age and the new post was eventually offered to Nigel Gresley of the Great Northern Railway. He had introduced a powerful new A1 Class Pacific in April 1922, and Raven was anxious to show that the NER could keep up with the race for increased power. Raven's rival design was authorised at the same time as the introduction of the A1 class publicised in the railway press in Ju ...
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