GWR 6800 Class
Encyclopedia
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) 6800 Class or Grange Class was a mixed traffic class of 4-6-0
4-6-0
Under the Whyte notation for the classification of steam locomotives, 4-6-0 represents the wheel arrangement of four leading wheels on two axles in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This wheel arrangement became the second-most popular...

 steam locomotive. There were 80 in the class, all built at the Swindon works.

History

The GWR locomotive standardisation policy pursued by G.J. Churchward envisaged a range of locomotive classes which would be suitable for the majority of duties, and yet which would share a small number of standard components. Amongst the designs suggested in 1901 was a 4-6-0 with 5 in 8 in (1.73 m) diameter coupled wheels, and the Standard No. 1 boiler. Although planned in 1901, none were built until 1936, by which time 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:...

 was in charge at Swindon. He took the Churchward proposal, and modified the design of the cab and controls to the current style.

The 4300 Class
GWR 4300 Class
The Great Western Railway 4300 Class is a class of 2-6-0 steam locomotive.- Overview :The class was introduced in 1911 to a G.J. Churchward design. 342 were built until 1932...

 of 2-6-0
2-6-0
Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This arrangement is commonly called a Mogul...

 tender locomotives had been introduced on the GWR in 1911, and by 1932 there were 342 in service. Between 1936 and 1939, 100 of these were taken out of service and replaced by new 4-6-0
4-6-0
Under the Whyte notation for the classification of steam locomotives, 4-6-0 represents the wheel arrangement of four leading wheels on two axles in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This wheel arrangement became the second-most popular...

 locomotives, 80 being of the 6800 (or Grange) class, whilst the remaining 20 were of the 7800
GWR 7800 Class
The Great Western Railway 7800 Class or Manor Class is a class of 4-6-0 steam locomotive. They were designed as a lighter version of the GWR Grange Class, giving them a wider Route Availability. Like the 'Granges', the 'Manors' used parts from the GWR 4300 Class Moguls but just on the first batch...

 (or Manor) class. It had been intended to replace all of the 4300 Class in this way, but the Second World War
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 stopped the programme. The Granges were effectively a smaller-wheeled version of the GWR Hall Class. In service they were reliable performers. With their power and mixed traffic characteristics they could handle most duties on the network. The class were often used for the haulage of perishable goods, such as fruit and broccoli, and for excursion trains.

The wheels, valve motion and tenders were taken from the withdrawn engines, reconditioned and then used in the construction of the 100 new locomotives; the components from one old locomotive were spread amongst more than one of the new engines. The cylinders of the Granges (and Manors) were of the same size as those used on the 4300 Class, but the old cylinders could not be re-used because the cylinders and valves shared a common casting, and the new design called for the separation between cylinder and valve centre lines to be increased by 2+1/2 in. This was done in order to make the cylinders level with the axles, but still allow the use of the old valve motion parts.

The GWR also built a lighter version of the Granges, the GWR 7800 Class
GWR 7800 Class
The Great Western Railway 7800 Class or Manor Class is a class of 4-6-0 steam locomotive. They were designed as a lighter version of the GWR Grange Class, giving them a wider Route Availability. Like the 'Granges', the 'Manors' used parts from the GWR 4300 Class Moguls but just on the first batch...

, known as the Manor Class, which had smaller boilers.

The BR power classification of the Grange class was 5MT, its GWR power class was D and its route availability colour code was red.

Details


Preservation

No engines were preserved. However, GWR 6880 Betton Grange
GWR 6800 Class 6880 Betton Grange
No.6880 Betton Grange is a steam locomotive which is presently under construction as a "new-build" project, based on the Llangollen Railway in Denbighshire, Wales. Described as "building the 81st Grange", the project started in 1998, and the locomotive is expected to be operational by 2013...

, the next Grange that was due to be built originally, is being built at 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...

.

External links

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