No.72010 ''Hengist'' is a
steam locomotive
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot ...
which is under construction as a "new-build" project. The design is based on the
mixed traffic Mixed traffic is a term that may refer to:
*A mixed-traffic locomotive.
*A street running train
A street running train is a train which runs on a track built on public streets. The rails are embedded in the roadway, and the train shares the str ...
BR Standard 6 Clan Class, none of which were preserved. The project is akin to the construction of the
60163 ''Tornado''.
The project maintains a build diary, showing monthly progress of the build which has been ongoing since 2010.
History
Background
The Clan class was a batch of 10 (''pacific'') locomotives built in the early 1950s. Their purpose was to be a lightweight version of the power class 7 ''Britannia'' locomotives that could operate over a wider variety of routes, albeit with slightly reduced power. The first batch was destined for Scotland, hence the name "Clan". Following experience with the first batch, a second batch of 15 was planned with design improvements. The first of these was to be allocated to the Southern Region with the number 72010 and name ''Hengist''. However, due to a shortage of steel in the 1950s, and a change in motive power policy the order was postponed and later cancelled.
No members of the class survived into preservation. 72006 ''
Clan McKenzie'' was withdrawn in May 1966 and all were scrapped by August 1966.
Project
''The Clan Project'' was initiated with the objective to create a new member of the class. As a go-anywhere engine with a low maintenance design, especially when incorporating improvements destined for the batch, the design should be most suitable for use on heritage railways as well as hauling rail tours. The engine is being built to modern
mainline standards.
The project was initially based at the
Swanage Railway
The Swanage Railway is a railway branch line from near Wareham, Dorset to Swanage, Dorset, England, opened in 1885 and now operated as a heritage railway.
The independent company which built it was amalgamated with the larger London and South ...
, but by 2017, the project was at the
Great Central Railway
The Great Central Railway in England was formed when the Manchester, Sheffield and Lincolnshire Railway changed its name in 1897, anticipating the opening in 1899 of its London Extension. On 1 January 1923, the company was grouped into the ...
where the completed cab and
smokebox
A smokebox is one of the major basic parts of a steam locomotive exhaust system. Smoke and hot gases pass from the firebox through tubes where they pass heat to the surrounding water in the boiler. The smoke then enters the smokebox, and is e ...
were displayed for a while, however logistics were to require a fourth move.
The project is now based at the premises of CTL Seal in
Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
. All of the components for the first phase of frame assembly are on site and assembly has commenced. Components for the bogie frame are either in stock or are being manufactured, and the aim is to start bogie frame assembly in early summer 2022. Meanwhile, the pattern for the outside cylinders is under construction.
Between 1951 and 1960, 999 BR Standard types were built across
12 locomotive classes and 72010, when completed, will be the 1000th.
Design
An improved design
[British Railways Standard Class 6 2 Cyl 4-6-2 Mixed Traffic Locomotive - December 1951] was worked out by British Railways and was to form the basis of the
Crewe Works
Crewe Works is a British railway engineering facility located in the town of Crewe, Cheshire. The works, which was originally opened by the Grand Junction Railway in 1840, employed around 7,000 to 8,000 workers at its peak. In the 1980s, a lot ...
Order Lot 242 for the second batch of Clans. The main changes involve:
* The frame design from
71000 ''Duke of Gloucester'', which involves 3 substantial steel castings, or combined frame stretchers and spring hangers. This change was to address frame cracking on the Britannias and Clans.
* The delta trailing truck from 71000 which has coil springs instead of the leaf springs of the original Clan design.
* New ashpan arrangement incorporating a number of changes including improved operating gear.
* Revised pipe and rod arrangement.
* Revised cab/tender connection, including a fall plate and gangway doors.
References
Notes
References
Sources
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Further reading
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External links
{{Commons category, BR Standard Class 6 72010 Hengist, BR Standard Class 6 72010 Hengist
Clan Project Official Site
6 72010
Individual locomotives of Great Britain
Standard gauge steam locomotives of Great Britain
4-6-2 locomotives
2′C1′ h2 locomotives
Steam locomotives of the 21st century