GWR 5600 Class
Encyclopedia
The GWR
Great Western Railway
The Great Western Railway was a British railway company that linked London with the south-west and west of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament in 1835 and ran its first trains in 1838...

 5600 Class is a class of 0-6-2T steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

 built between 1924 and 1928. They were designed by C.B Collett
Charles Collett
Charles Benjamin Collett was chief mechanical engineer of the Great Western Railway from 1922 to 1941. He designed the GWR's 4-6-0 Castle and King Class express passenger locomotives.-Career:...

 for the Great Western Railway
Great Western Railway
The Great Western Railway was a British railway company that linked London with the south-west and west of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament in 1835 and ran its first trains in 1838...

 (GWR), and were introduced into traffic in 1924. Two hundred locomotives were built and remained in service until withdrawn by British Railways between 1962 and 1965. Nine of the class have survived into preservation.

Background: Welsh 0-6-2T types

The railways of South Wales
South Wales
South Wales is an area of Wales bordered by England and the Bristol Channel to the east and south, and Mid Wales and West Wales to the north and west. The most densely populated region in the south-west of the United Kingdom, it is home to around 2.1 million people and includes the capital city of...

 seem to have had a particular liking for the 0-6-2T type. This was because the nature of the work they undertook demanded high adhesive weight, plenty of power with good braking ability, but no need for outright speed, nor large tanks or bunker as the distances from pit to port were short. These Welsh locomotives were taken over by the GWR at The Grouping
Railways Act 1921
The Railways Act 1921, also known as the Grouping Act, was an enactment by the British government of David Lloyd George intended to stem the losses being made by many of the country's 120 railway companies, move the railways away from internal competition, and to retain some of the benefits which...

 in 1923 and some were rebuilt
Remanufacturing
Remanufacturing is the process of disassembly and recovery at the module level and, eventually, at the component level. It requires the repair or replacement of worn out or obsolete components and modules. Parts subject to degradation affecting the performance or the expected life of the whole are...

 with GWR taper boilers. A number of them passed into British Railways (BR) ownership in 1948, including (with some gaps in numbering):
  • Brecon and Merthyr Railway
    Brecon and Merthyr Railway
    The Brecon and Merthyr Junction Railway was one of several railways that served the industrial areas of South Wales and Monmouthshire. It ranked fifth amongst them in size, although hemmed in by the Taff Vale Railway and Great Western Railway...

    , BR numbers 431-436
  • Cardiff Railway
    Cardiff Railway
    The Cardiff Railway came into being from the need to service Bute Docks, so as to provide facilities for the traffic to and from the Docks. The railway was only 11 miles in length, a fact which belied its importance, since it provided both the Taff Vale Railway and the Rhymney Railway, inter alia,...

    , BR number 155
  • Rhymney Railway
    Rhymney Railway
    The Rhymney Railway was virtually a single stretch of main line, some fifty miles in length, by which the Rhymney Valley was connected to the docks at Cardiff in the county of Glamorgan, South Wales.-History:...

    , BR numbers 35-83
  • Taff Vale Railway
    Taff Vale Railway
    The Taff Vale Railway is a railway in Glamorgan, South Wales, and is one of the oldest in Wales. It operated as an independent company from 1836 until 1922, when it became a constituent company of the Great Western Railway...

    , BR numbers 204-399


For further information on these pre-grouping locomotives see Locomotives of the Great Western Railway
Locomotives of the Great Western Railway
The first Locomotives of the Great Western Railway were specified by Isambard Kingdom Brunel but Daniel Gooch was soon appointed as the railway's Locomotive Superintendent. He designed several different broad gauge types for the growing railway, such as the Firefly and later Iron Duke Class 2-2-2s...

.

Origins

When the GWR took over the Welsh valley lines, they discovered that the Welsh locomotive crews liked their 0-6-2T locomotives. Rather than a new design the 5600 Class was a "Swindonised" version of the Rhymney Railway M class
Rhymney Railway M class
The Rhymney Railway M class was a class of 0-6-2T tank locomotive introduced into traffic on the Rhymney Railway in 1904. These were substantial sized tank engines, and weighed 66 tons and were in length....

 and R class
Rhymney Railway R class
The Rhymney R class was a class of 0-6-2T steam locomotive introduced into traffic in 1907 designed by the railway's engineer Hurry Riches. These were substantial sized tank locomotives, and weighed 67 tons and were 37 feet in length.There were initially three locos in the class augmented to five...

 locomotives. The 1904 M class (and the similar 1909 R class) were successful designs ideally suited to hauling heavy coal trains a relatively short distance.

The 5600 Class was specially designed for work in South Wales
South Wales
South Wales is an area of Wales bordered by England and the Bristol Channel to the east and south, and Mid Wales and West Wales to the north and west. The most densely populated region in the south-west of the United Kingdom, it is home to around 2.1 million people and includes the capital city of...

, replacing the elderly, worn-out locomotives that had been 'inherited' in 1923, when the smaller railway companies were forcibly merged into the GWR at The Grouping. Contrary to this trend, the Rhymney Railway's more modern 0-6-2's were in generally good order and had proved successful. Thus they became the blueprint for the 56xx.

The first of five R class locos was re-boilered by the GWR in 1926 and a single M class was upgraded in 1930. In this form, both were visually almost indistinguishable from the 56 Class.

Design

The design of the 5600 Class followed Great Western Railway practice as far as possible, by utilising many standardized
Standardization
Standardization is the process of developing and implementing technical standards.The goals of standardization can be to help with independence of single suppliers , compatibility, interoperability, safety, repeatability, or quality....

 parts. Included in Collett's innovations was a Standard Number 2 boiler
Boiler
A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications.-Materials:...

 which was suitable for the 5600 Class, and the M and R class Rhymney locomotives, complete with the traditional brass GWR safety valve casing and copper-capped chimney.

They were substantial sized tank engines, 37 ft 6ins in length and weighing 62 tons. The side tanks were capable of holding 1900 gallons of water. The high domed cab, bunker and tanks were closely related to the 31xx and 42xx classes. One hundred of the class were built at the GWR workshops in Swindon
Swindon Works
Swindon railway works were built by the Great Western Railway in 1841 in Swindon in the English county of Wiltshire.-History:In 1835 Parliament approved the construction of a railway between London and Bristol. Its Chief Engineer was Isambard Kingdom Brunel.From 1836, Brunel had been buying...

 from 1924-1927.

In 1927 another 100 similar engines were constructed – these were slightly heavier and numbered in the 66xx series. Nos 6600-6649 were Swindon-built in 1927-1928, but due to the pressure of work 6650-6699 were built by Armstrong Whitworth
Armstrong Whitworth
Sir W G Armstrong Whitworth & Co Ltd was a major British manufacturing company of the early years of the 20th century. Headquartered in Elswick, Newcastle upon Tyne, Armstrong Whitworth engaged in the construction of armaments, ships, locomotives, automobiles, and aircraft.-History:In 1847,...

 in 1928. This resulted in some minor design differences from the Swindon locomotives.

When the Welsh railwaymen discovered that the new GWR 5700 Class
GWR 5700 Class
The Great Western Railway 5700 Class is a class of 0-6-0 pannier tank steam locomotive, built between 1929 and 1950. 863 were built, making them the second most-produced British class of steam locomotive.- Overview :...

 0-6-0 pannier tank (introduced 1929) was even more suitable for the same work – being shorter and lighter, with roughly the same (slightly lower) tractive effort – no further Class 56xx/66xx were built.

The 5600 Class had the distinction of being the only locomotive of 0-6-2
0-6-2
Under the Whyte notation for the classification of steam locomotives, 0-6-2 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and two trailing wheels on one axle...

 wheel arrangement built new by the GWR. Nevertheless, there were just over 400 of the type in service from 1940–1945, demonstrating the large number acquired in 1923.

Dimensions

  • Locomotive weight:
    • All locos, 68 tons 12 cwt
    • 5600 Class, 68 tons 12 cwt
    • 6600 Class, 69 tons 7 cwt
    • 5600 Class, 62 tons 18 cwt
    • 6600 Class, 15 cwt more than 5600

Service

A fall in the South Wales coal trade in the 1930s saw many of the class re-allocated to other parts of the system. Due to the stability of the design, many drivers would typically operate the 56xx class down the Welsh valleys in reverse (bunker first). The placement of the trailing wheels helped the engine enter the curves better than if operated in the other direction. Typically, during operation, when pulling a heavy load the tanks were operated bunker first, and then smokebox first on the return trips up the valleys.

All the 56xx/66xx locomotives passed into British Railways ownership at nationalisation in 1948, and all remained in service until 1962, at which time they were withdrawn from service quite rapidly, with the onset of diesel
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

 traction on BR gaining momentum. All had been retired by 1965.

Preservation

Several ended up in Woodham Brothers' scrapyard in Barry, South Wales, with eight of the nine preserved engines saved from Barry.

As the locomotives were operated mainly in South Wales, some railfan
Railfan
A railfan or rail buff , railway enthusiast or railway buff , or trainspotter , is a person interested in a recreational capacity in rail transport...

s know the Class by the nickname "Taffy Tank"; 'Taffy' being a derogatory term
Taffy was a Welshman
"Taffy was a Welshman" is an English language nursery rhyme with anti-Welsh lyrics, which was popular in England between the eighteenth and twentieth centuries. It has a Roud Folk Song Index number of 19237.-Lyrics:Versions of this rhyme vary...

 for someone of Welsh
Welsh people
The Welsh people are an ethnic group and nation associated with Wales and the Welsh language.John Davies argues that the origin of the "Welsh nation" can be traced to the late 4th and early 5th centuries, following the Roman departure from Britain, although Brythonic Celtic languages seem to have...

 descent.

The following table lists the Preserved locomotives:
Number Current Location Current Status Notes
5619 In Service In BR unlined Green, owned by the Telford Steam Railway
Telford Steam Railway
The Telford Steam Railway is a heritage railway located at Horsehay, Telford in Shropshire, England, formed in 1976.The railway is operated by volunteers on Sundays and Bank Holidays from Easter to the end of September, and at Christmas...

5637 East Somerset Railway
East Somerset Railway
The East Somerset Railway is a heritage railway in Somerset, running between Cranmore and Mendip Vale. Prior to the Beeching Axe, the railway ran from Witham to Wells, meeting both the Cheddar Valley line and Somerset and Dorset Joint Railway at the latter station.- History :The line was...

In Service In BR lined Green, owned by the 5637 Steam Loco Group
5643 Llangollen Railway
Llangollen Railway
The Llangollen Railway is a volunteer-run preserved railway in Denbighshire, Wales, which operates between Llangollen and Carrog; at long, it is the longest preserved standard gauge line in Wales and operates daily in Summer as well as weekends throughout the Winter months using a wide variety of...

In Service In BR lined Green, owned by Furness Railway Trust
5668 Pontypool and Blaenavon Railway
Pontypool and Blaenavon Railway
The Pontypool and Blaenavon Railway is a volunteer-run heritage railway in South Wales, running trains between a halt platform opposite the Whistle Stop public house southwards to the town of Blaenavon via a two-platform station at the site of former colliery furnace.The line is the highest...

Awaiting Restoration Privately owned. Asbestos stripped in readiness for a boiler lift
6619 Kent & East Sussex Railway In Service In BR unlined Black
6634 Severn Valley Railway
Severn Valley Railway
The Severn Valley Railway is a heritage railway in Shropshire and Worcestershire, England. The line runs along the Severn Valley from Bridgnorth to Kidderminster, following the course of the River Severn for much of its route...

Under Restoration Owned by Pete Waterman
Pete Waterman
Peter Alan Waterman OBE is an English record producer, occasional songwriter, radio and club DJ, television presenter, president of Coventry Bears rugby league club and a keen railway enthusiast. As a member of the Stock Aitken Waterman songwriting team he wrote and produced many hit singles...

. Restoration to be completed by the SVR
Severn Valley Railway
The Severn Valley Railway is a heritage railway in Shropshire and Worcestershire, England. The line runs along the Severn Valley from Bridgnorth to Kidderminster, following the course of the River Severn for much of its route...

6686 Barry Island Railway Owned by the Vale of Glamorgan Council as part of the Barry Ten
Barry Ten
The Barry 10 is a collection of scrapyard locos that were removed from Woodham Brothers in 1990 when Dai woodham retired. They were then taken on by the Vale of Glamorgan Council. For the past 20 years the locos have been stored in scrapyard condition, although several have been bought.All these...

6695 Swanage Railway
Swanage Railway
The Swanage Railway is a long heritage railway in the Purbeck district of Dorset, England. The railway follows the route of the Purbeck branch line between Norden railway station, Corfe Castle railway station, Harman's Cross railway station, Herston Halt railway station and Swanage...

In service In BR lined Green
6697 Didcot Railway Centre
Didcot Railway Centre
Didcot Railway Centre, located in the town of Didcot in the English county of Oxfordshire, is based around the site of a comprehensive "engine shed" which became redundant after the nationalisation of the UK railways, due to the gradual changeover from steam to diesel motive power.-Description:The...

On Static Display In GWR unlined Green, only member of the Class not to go through Woodham Brothers' scrapyard

External links

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