LNER Class D49
Encyclopedia
The London and North Eastern Railway
(LNER) D49 Class is a class of 4-4-0
steam locomotives designed by Nigel Gresley
. They were named after fox hunts and shire
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One, 246/62712 Morayshire has been preserved on the Bo'ness and Kinneil Railway
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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) D49 Class is a class of 4-4-0
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
steam locomotives designed by Nigel Gresley
Nigel Gresley
Sir Herbert Nigel Gresley was one of Britain's most famous steam locomotive engineers, who rose to become Chief Mechanical Engineer of the London and North Eastern Railway . He was the designer of some of the most famous steam locomotives in Britain, including the LNER Class A1 and LNER Class A4...
. They were named after fox hunts and shire
Shire
A shire is a traditional term for a division of land, found in the United Kingdom and in Australia. In parts of Australia, a shire is an administrative unit, but it is not synonymous with "county" there, which is a land registration unit. Individually, or as a suffix in Scotland and in the far...
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One, 246/62712 Morayshire has been preserved on the Bo'ness and Kinneil Railway
Bo'ness and Kinneil Railway
The Bo’ness and Kinneil Railway is a Heritage railway in Falkirk, Scotland. It is operated by the Scottish Railway Preservation Society, and operates some 5 miles of track, virtually the entire Slamannan and Borrowstounness Railway that became part of the former North British Railway on the Firth...
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Sub-classes
- D49/1 Introduced 1927 with Walschaerts and, Gresley conjugated valve gearGresley conjugated valve gearThe Gresley conjugated valve gear is a valve gear for steam locomotives designed by Sir Nigel Gresley, chief mechanical engineer of the LNER, assisted by Harold Holcroft...
with 8 inches (203.2 mm) piston valvePiston valveA piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.Examples of piston valves are:...
s - D49/2 Introduced 1928 with LentzHugo LentzHugo Lentz was an Austrian mechanical engineer, born in South Africa. He was the inventor of many award winning improvements to the steam engine....
rotary-cam poppet valvePoppet valveA poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide...
s - D49/3 Introduced 1928 with LentzHugo LentzHugo Lentz was an Austrian mechanical engineer, born in South Africa. He was the inventor of many award winning improvements to the steam engine....
oscillating-cam poppet valvePoppet valveA poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide...
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