GWR 5700 Class
||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (March 2012)|
|Great Western Railway 5700 class|
GWR 5700 Class no. 4612, as preserved on the Bodmin & Wenford Railway.
|UIC classification||C nt|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|Driver diameter||4 ft 7 1⁄2 in (1.410 m)|
|Wheelbase||15 ft 6 in (4.72 m)|
|Length||31 ft 2 in (9.50 m) over buffers|
|Width||8 ft 7 in (2.62 m)|
|Height||12 ft 3 1⁄16 in (3.74 m)|
|Axle load||16 tons 15 cwt (37,500 lb or 17.0 t) full[a]|
|Locomotive weight||47 tons 10 cwt (106,400 lb or 48.3 t) full[b]|
|Fuel capacity||3 tons 6 cwt (7,400 lb or 3.4 t)[c]|
|Water capacity||1,200 imp gal (5,500 l; 1,400 US gal)[d]|
|Boiler pressure||200 lbf/in2 (1.38 MPa)|
|Firegrate area||15.3 sq ft (1.42 m2)|
|1,075.7 sq ft (99.94 m2)|
|– Firebox||102.3 sq ft (9.50 m2)|
|– Total||1,178.0 sq ft (109.44 m2)|
|Cylinder size||17.5 in × 24 in (444 mm × 610 mm)|
|Valve type||Slide valves|
|Tractive effort||22,515 lbf (100.15 kN)|
|Operator(s)||GWR » BR|
|Axle load class||GWR: Blue until 1950, then Yellow|
The Great Western Railway (GWR) 5700 Class is a class of 0-6-0 pannier tank steam locomotive, built between 1929 and 1950. 863 were built, making them the most prolific class of the GWR, and one of the most numerous classes of British steam locomotive. [f]
As a result of the 1955 Modernisation Plan, the 5700 Class was withdrawn from BR service between 1956 and 1966. Twenty withdrawn locomotives were sold to London Transport and industry, of which eleven were later preserved, along with five that were retrieved from a scrapyard.[g]
The GWR had favoured pannier tank locomotives since 1911 when they had started rebuilding saddle tank locomotives built between 1870 and 1905 into this style. By 1929 these older locomotives were in need of replacement.
The first 5700s were almost identical in appearance to several of the older converted locos (e.g. classes 645, 1701, 1854, 2721) and had round spectacles (windows) in the cab front, but those built after 1933 from no. 8750 onwards had rectangular windows and a slightly different cab profile virtually identical to the style introduced with the 5400 Class in 1931. Whilst they can be viewed as a simple update of the 2721 Class, the Collett improvements were worthwhile and the class became as synonymous with the GWR as Castles and Kings, lasting until the end of steam on the Western Region of British Railways.
The size of the class demanded that the 5700 class locomotives were spread across several series of numbers.
- 3600 - 3699
- 3700 - 3799
- 4600 - 4699
- 5700 - 5799
- 6700 - 6779
- 7700 - 7799
- 8700 - 8799
- 9600 - 9682
- 9701 - 9799
- Armstrong Whitworth – 7775–7799 (25)
- W. G. Bagnall – 6700–6724, 8725–8749 (50)
- Beyer, Peacock & Co. – 8700–8724 (25)
- Kerr Stuart - 7700–7724 (25)
- North British – 5700–5749, 7725–7774 (100)
- Yorkshire Engine Co. – 6725–6749 (25)
Accidents and incidents
- On 7 December 1961, a locomotive of the class was in collision with a freight train at Bodmin General station, Cornwall due to a faulty signal failing to give a clear danger aspect.
Other pannier tank locomotives
There were numerous other classes of pannier tanks built by the GWR. They fundamentally belonged to only two "families" of "large" and "small" designs, excluding some absorbed stock and even a few conversions of tender locos. The two groups were:-
- "Large" group originally featuring saddle tanks (or in a few cases side tanks), 4'6" driving wheels and double frames e.g. 1076 Class or inside frames GWR 645 Class, culminating in the 94xx
- "Small" group originally built at Wolverhampton Works with saddle tanks and driving wheels of 4 ft commencing with the GWR 850 Class and culminating in the BR 16xx
For example within the "small" group, the GWR 5400 Class locomotives were derived from the William Dean -designed GWR 2021 Class (an enlargement of the 850 Class), with larger wheels for higher top speed and fitted with autotrain apparatus ('auto-fitted') for push-pull passenger work. The GWR 6400 Class were similar to the 5400 Class, also being auto-fitted, but having the same size wheels as the 5700. The GWR 7400 Class were very similar to the 6400 Class, but were not auto-fitted and had a higher boiler pressure.
Within the "large" group, the GWR 9400 Class was the post-war updated design of the 8750 variant of the 57xx: heavier and longer, but nominally no more powerful, using the same taper boiler as the GWR 2251 Class.
For a list of classes, see GWR 0-6-0PT.
The 9700 Class
The 9700 Class Pannier Tanks were a direct development of the 5700 Class. The prototype for the class, No.8700 (later 9700), was a rebuilt 5700 locomotive. They were specifically for working on the Metropolitan/Hammersmith & City lines between Paddington Stations and Smithfield Meat Market. They replaced Metro and 633 class locomotives.
The eleven locomotives in the class had condensing apparatus that fed the exhaust steam back into the water tanks. The tanks themselves were shortened to make room for the external exhaust pipes and were extended down to the footplate in front of the cab to increase their capacity. As condensing the steam heated the water, a reciprocating pump (Weir pump) was fitted as a boiler feedwater pump because standard injectors will not work with hot water. The pumps led to (unsuccessful) tests with these locomotives acting as fire engines during World War II.
To work over the electrified underground lines, the 9700 Class locomotives had a special type of ATC equipment that lifted clear of the centre rail and had tripcock brake valves that matched the London Transport signalling system.
Withdrawal and mileages
Withdrawal from service with BR started in 1956 and was completed in 1964. Twenty locomotives were sold and continued in use until 1971 (London Transport) and 1975 (NCB).
le Fleming noted that the mileages of those withdrawn between March 1956 and March 1958 ranged "between 500,000 and 556,000". Some other known mileages are shown below.
|3650||Dec 1939||Sep 1963||493,100 mi (793,600 km)|
|3738 ||Sep 1937||Jul 1963||~500,000 mi (800,000 km)|
|4612 ||Feb 1942||Jul 1965||427,707 mi (688,328 km)|
|5764 ||Jun 1929||(Dec 1963)[i]||668,771 mi (1,076,283 km)|
|7714 ||Apr 1930||Jan 1959||520,259 mi (837,276 km)|
|9629 ||Dec 1945||(Sep 1961)[ii]||385,188 mi (619,900 km)|
|9682 ||May 1949||Aug 1965||over 250,000 mi (400,000 km)|
- withdrawn from BR May 1969. Mileage from later LT records.
- Date of last Heavy General Overhaul (H/G). Withdrawn Oct 1964.
Use after British Railways
Thirteen 5700s were bought by London Transport (from 1956 to 1963) and used on the London underground network.
The first locomotive, 7711, underwent trials from January to April 1956, first running between Finchley Road and Baker Street. Modifications were needed to the cab for clearance and the tripcock brake valves after problems were found when running in reverse. Curtains were also fitted to the cab to reduce smoke and fumes in tunnels. In May, the 5700s became the standard for engineering trains on London Transport when they bought 7711 (for £3,160), decided to buy another (5752), and planned to buy more over the coming years.
They were numbered L89 to L99 and were allocated to the depots at Lillie Bridge (Kensington) and Neasden. Only eleven were running at any one time, the original L90 and L91 were withdrawn for repairs but scrapped instead and replaced by other locomotives which carried the same number.
They replaced older LT steam locomotives on permanent way trains and were never used on normal passenger services. Main line running included trips between depots, to Acton Works and runs out to Croxley Tip, near Watford.
|LT Number||GWR/BR No.||Date Built||Date to LT||Withdrawn by LT||Notes|
|L89||5775||1929||1963||1969||Sold to Keighley and Worth Valley Railway|
|L90 (II)||7760||1930||1961||1971||Sold to Tyseley Steam Centre[h]|
|L92||5786||1930||1958||1969||Sold to Worcester Locomotive Society[i]|
|L94||7752||1930||1959||1971||Sold to Tyseley Steam Centre.[h]|
|L95||5764||1929||1960||1971||Sold to Severn Valley Railway.|
|L99||7715||1930||1963||1969||Sold to Quainton Railway Society.[j]|
National Coal Board
Between 1959 and 1965 the NCB bought five 5700s for use at pits in South Wales. The engines retained their BR numbers.
|BR No.||Date Built||Date to NCB||Location||Notes|
|3663||1940||1962||Nine Mile Point||Scrapped 1966|
|9792||1936||1964||Maerdy||Derelict by 1972|
3650 was withdraw in 1963 and then sold to P.D. Fuels, a division of Stephenson Clarke Ltd., and was used to move spoil to slag heaps at Gwaen-Caer-Gurwen colliery near Ammanford, Carmarthenshire. It was later bought and restored by members of the Great Western Society and became operational in 2009.
9642 was withdrawn in 1964 and sent to Hayes Scrapyard, near Bridgend. Rather than being scrapped, it was used to shunt other locomotives being scrapped. It was due to be scrapped in 1967, but a last minute intervention resulted in its being bought (1968) and restored by the South Wales Pannier Group, becoming the first of the class to be preserved.
Sixteen 5700 class locomotives have been preserved, of which 8 are currently operational, with 2 of these being certified to run on Network Rail. Of the 12 engines that went to Barry Scrapyard, 5 were saved for preservation and 1 (3612) was bought for spares by the Severn Valley Railway.
As the oldest locomotives were the first to be withdrawn and sold for further use, they form the majority of preserved examples. A number of those bought from London Transport were still in running order and were used on preserved lines with minimal work. Interestingly, 5764 (ex-LT L95) was steamed the day it arrived at Bridgnorth on the Severn Valley Railway, being lit-up before it had been removed from the low-loader on which it was delivered.
Several preserved locomotives have run in London Transport (LT) colours but 7715/L99 has been consistently so painted. At present, 7752/L94 has been painted in LT colours and has now returned to service at Tyseley. 5786 has also recently been repainted into London transport guise as L.92 and runs as such in service at the South Devon Railway.
|GWR 5700s in Preservation|
|GWR/BR No.||Image||Date Built||Built by||Current Location /
|3650||1939||Swindon||Didcot Railway Centre - Operational.||Ex-Stephenson Clarke|
|3738||1937||Swindon||Didcot Railway Centre - static display due to firebox repair and a boiler crack||Ex-Barry Scrapyard|
|4612||1942||Swindon||Bodmin and Wenford Railway - Operational.||Ex-Barry Scrapyard|
|5764||1929||Swindon||Severn Valley Railway
– Out of service pending static display.
|5775||1929||Swindon||National Railway Museum Shildon - Static Display.||Ex-LT L89|
|5786||1930||Swindon||South Devon Railway
– Operational as L92.
|7714||1930||Kerr Stuart||Severn Valley Railway
– Undergoing Overhaul.
|7715||1930||Kerr Stuart||Buckinghamshire Railway Centre
- Static Display
|7752||1930||North British Loco||Tyseley - Operational (Main Line Certified) as L94.||Ex-LT L94|
|7754||1930||North British Loco||Llangollen Railway - Undergoing Overhaul.||Ex-NCB|
|7760||1930||North British Loco||Tyseley - For Sale. Awaiting Overhaul.||Ex-LT L90|
– Operational (Main Line Certified).
|9629||1945||Swindon||Pontypool - Undergoing restoration.||Ex-Barry Scrapyard|
|9642||1946||Swindon||Gloucestershire Warwickshire Railway - Undergoing overhaul.||Ex-Hayes Scrapyard|
|9681||1949||Swindon||Dean Forest Railway - Awaiting overhaul.||Ex-Barry Scrapyard|
|9682||1949||Swindon||Chinnor & Princes Risborough - Undergoing overhaul.||Ex-Barry Scrapyard|
5775 also featured in the Full Steam Behind episode of Last of the Summer Wine (series 5), in its LT livery (number L89) but with "LONDON TRANSPORT" replaced with "KWVR" (Keighley and Worth Valley Railway) on the side of the tank.
Bachmann Branchline has made OO gauge models of the 5700 and 8750 classes in various GWR and BR liveries, and also in the liveries of LT, NCB, Stephenson Clarke, and even GNSR (the fictional railway company in The Railway Children).
Just Like The Real Thing make an O gauge kit for the 5700 and 8750 classes.
- GWR 0-6-0PT – list of classes of GWR 0-6-0 pannier tank, including table of preserved locomotives
- Axle load: 8750 class – 17 tons 0 cwt (38,100 lb or 17.3 t), 9700 class – 17 tons 4 cwt (38,500 lb or 17.5 t).
- Weight: 8750 class – 49 tons 0 cwt (109,800 lb or 49.8 t), and 9700 class – 50 tons 15 cwt (113,700 lb or 51.6 t).
- Coal capacity: 9700 class – 2 tons 16 cwt (6,300 lb or 2.9 t).
- Water capacity: 9700 class – 1,230 imp gal (5,600 l; 1,480 US gal).
- 6700-79 were built for shunting only and were not fitted with ATC, vacuum braking, and steam heating.
- Le Fleming mentions LNWR DX (943 built) and LMS Class 5 4-6-0 (Stanier) (842 built) among other numerous classes of British steam locomotives. Surprisingly, he does not mention the WD Austerity 2-8-0 (935 built), possibly because all but 3 were transported to mainland Europe after D-Day for use by the British Army, and only 733 of the class later returned to mainline use in the UK.
- Another locomotive (3612) was also retrieved for spares by the Severn Valley Railway.
- Now owned by Vintage Trains, a charitable trust (previously known as Birmingham Railway Museum Trust). The Trust is the custodian of the Tyseley Collection (held at Tyseley Locomotive Works) which belongs to 7029 Clun Castle Ltd, a registered educational charity.
- Now based at the South Devon Railway.
- Now operating as the Buckinghamshire Railway Centre.
- le Fleming 1958, pp. E77-78.
- Whitehurst 1973, p. 101.
- le Fleming 1958, p. E77.
- Whitehurst 1973, p. 146.
- le Fleming 1958, p. E78.
- le Fleming 1958, p. E79.
- Jones 2014, p. 43.
- Jones 2014, p. 21.
- Jones 2014, p. 39.
- Jones 2014, p. 10.
- Jones 2014, p. 68.
- Whitehurst 1973, pp. 82-83.
- Jones 2014, p. 139.
- Whitehurst 1973, pp. 32–34, 41–42, 51–52, 59–60, 67–68, 71–72, 74–76.
- Earnshaw 1993.
- le Fleming 1958, p. E80.
- Jones 2014, p. 140.
- Jones 2014, p. 145.
- Jones 2014, p. 150.
- Jones 2014, p. 151.
- Jones 2014, pp. 165-166.
- P & B Loco Group - 9629's History.
- Jones 2014, p. 186.
- Whitehurst 1973, p. 82.
- Jones 2014, p. 88.
- Casserley 1979, p. 95.
- Jones 2014, p. 89.
- Jones 2014, p. 156.
- Jones 2014, p. 180.
- Jones 2014, p. 179.
- Jones 2014, p. 183.
- Jones 2014, p. 153–155.
- Jones 2014, p. 187–189.
- Jones 2014, p. 152.
- Whalley 2013a, pp. 8–9.
- Whalley 2013b, pp. 13, 18.
- "5700 Pannier Tank". Dapol Model Railway Company. Retrieved 23 June 2014.
- Casserley, H. C. (1979). The last years of Metropolitan Steam (1st ed.). Truro, UK: D. Bradford Barton. ISBN 0-85153-327-2.
- Faulkner, John. "Class 57XX". Hornby Railways Collector Guide. Retrieved 23 June 2014.
- Earnshaw, Alan (1993). Trains in Trouble: Vol. 8. Penryn: Atlantic Books. ISBN 0-906899-52-4.
- Ferris, Tom (1995). Severn Valley Locomotives as they were.
- "GWR 5700/8750 Pannier tank O Gauge Model Loco kit". Just Like The Real Thing. Retrieved 12 July 2014.
- Harris, Michael. Locomotives Illustrated no. 39 Gwr pannier tanks post 1923.
- Heavyside, Tom (1996). Keighley & Worth Valley Locomotives as they were.
- Jones, Robin (2014). Great Western Railway Pannier Tanks (1st ed.). Marlborough, UK: The Crowood Press. ISBN 978-1-84797-653-6.
- le Fleming, H.M. (April 1958). Part 5: Six-coupled Tank Engines. The Locomotives of the Great Western Railway. Oxford: RCTS. ISBN 0-901115-35-5.
- "The Pontypool & Blaenavon Locomotive Group - 9629's History". 31 August 2012. Retrieved 6 July 2014.
- Russell, J. H. (1975). A pictorial Record of Great Western Engines.
- Whalley, Tom (2013a). "Graham Farish by Bachmann Past and Present Models Rev. 11". World of Model Railways. Bachmann Europe plc. GFPTW2013. Retrieved 23 June 2014.
- Whalley, Tom (2013b). "Bachmann Branchline Past and Present Models Rev. 5". World of Model Railways. Bachmann Europe plc. BLPTW2013. Retrieved 23 June 2014.
- Whitehurst, Brian (1973). Great Western engines, names, numbers, types, classes: 1940 to preservation. Oxford: Oxford Publishing Company. ISBN 0-902888-21-8. OCLC 815661.
|Wikimedia Commons has media related to GWR 5700 Class.|
- 5700 Tank Class Introduction
- Guide to GWR Pannier Tank Classes
- Steam Locos in Profile - The GWR 5700 Pannier Tanks - a 15 minute YouTube documentary