GWR 6800 Class

Class of steam locomotive

4 ft 8+1⁄2 in (1,435 mm) standard gaugeLeading dia.3 ft 0 in (0.914 m)Driver dia.5 ft 8 in (1.727 m)Minimum curve8 chains (530 ft; 160 m) normal,
7 chains (460 ft; 140 m) slowLength63 ft 0+1⁄4 in (19.21 m)Width8 ft 11+1⁄4 in (2.724 m)Height13 ft 0 in (3.962 m)Axle load18 long tons 8 cwt (41,200 lb or 18.7 t)
(20.6 short tons)Adhesive weight55 long tons 2 cwt (123,400 lb or 56 t)
(61.7 short tons)Loco weight74 long tons 0 cwt (165,800 lb or 75.2 t)
(82.9 short tons) fullFuel typeCoalFuel capacity7 long tons 0 cwt (15,700 lb or 7.1 t)
(7.8 short tons)Water cap.3,500 imp gal (16,000 L; 4,200 US gal)Firebox: • Grate area27.07 sq ft (2.515 m²)BoilerGWR Standard No. 1Boiler pressure225 psi (1.55 MPa)Heating surface: • Firebox154.78 sq ft (14.380 m²) • Tubes and flues1,686.60 sq ft (156.690 m²)Superheater:
• Heating area4-element: 191.8 sq ft (17.82 m²),
6-element: 253.38 sq ft (23.540 m²)CylindersTwo, outsideCylinder size18.5 in × 30 in (470 mm × 762 mm)

Performance figures
Tractive effort	28,875 lbf (128.44 kN)

Career
Operators	Great Western Railway, British Railways
Power class	GWR: D; BR: 5MT
Numbers	6800–6879
Axle load class	GWR: Red
First run	1936
Retired	1960–1965
Disposition	All original locomotives scrapped, GWR 6880 Betton Grange Operational

The Great Western Railway (GWR) 6800 Class or Grange Class was a mixed-traffic class of 4-6-0 steam locomotive, built to replace the GWR 4300 Class 2-6-0. There were 80 in the class, all built at the Swindon works, using some reconditioned parts from withdrawn 4300 Class locomotives.

Background

The GWR locomotive standardisation policy pursued by George Jackson 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.^[1] Amongst the designs suggested in 1901 was a 4-6-0 with 5-foot-8-inch (1.727 m) diameter driving wheels, and the Standard No. 1 boiler.^[2] Although planned in 1901, none were built during Churchward's lifetime. C.B. Collett, (Churchward's successor at Swindon Works) rather introduced the Hall class with 6-foot (1.829 m) diameter driving wheels.

The 4300 Class of 2-6-0 tender locomotives had been introduced on the GWR for mixed traffic duties in 1911, and by 1932 there were 342 in service.^[3] However, by the mid 1930s some of the earlier examples were in need of attention and the class as a whole was struggling with some of the duties expected of them. Collett therefore revived the Churchward proposal, but modified the design to include a cab and controls to the current style.^[4] Between 1936 and 1939, one hundred 4300 Class were taken out of service and replaced by new 4-6-0 locomotives, eighty of which were of the 6800 (or Grange) class, whilst the remaining 20 were of the 7800 (or Manor) class.^[5] It had been intended to replace all of the 4300 Class in this way, but the Second World War stopped the programme.^[5]^[6]

Design and Production

The Granges were effectively a smaller-wheeled version of the Hall Class.^[6]

The wheels, valve motion and tenders were taken from the withdrawn engines, reconditioned and then used in the construction of the 100 new locomotives;^[4]^[6]^[7] the components from one old locomotive were spread amongst more than one of the new engines.^[8] The cylinders of the Granges 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 inches (64 mm). This was done in order to make the cylinders level with the axles, but still allow the use of the old valve motion parts.^[9]^[10]

The locomotives were built in two batches to a single order (Lot No. 308): Nos. 6800-6859 were built between August 1936 and December 1937, and Nos. 6860-6879 appeared between February and May 1939. They were all named after Granges in the area covered by the GWR. Further construction of the class was cancelled due to the outbreak of war.^[11] They were originally fitted with Churchward 3,500 imp gal (16,000 L; 4,200 US gal) tenders taken from withdrawn members of the 4300 Class. However, after the second world war several were fitted with newer 3,500 imp gal (16,000 L; 4,200 US gal) and 4,000 imp gal (18,000 L; 4,800 US gal) types.^[12]

Performance

Although built to a thirty five-year-old design, in service they proved to be reliable performers.^[4]^[13] With their power and mixed traffic characteristics they could handle most duties on the network.^[4] Their smaller driving wheels giving them a higher tractive effort than the Hall Class. They were often used for the haulage of perishable goods, such as fruit and broccoli, and for excursion trains.^[14] However their axle loading prevented their use on some cross-country routes previously operated by the 4300 class. As a result, a lighter version in the form of the Manor Class was introduced for these duties.^[7]

The BR power classification of the Grange class was 5MT, its GWR power class was D and its route availability colour code was red.^[12]

Accidents

On 21 September 1962, 6800 Arlington Grange was hauling a freight train which overran signals at Steventon and was derailed.^[15]

Withdrawal and Preservation

The entire class was withdrawn from service between 1960 and 1965 and no examples were preserved. However, GWR 6880 Betton Grange, the next Grange that was due to be built originally, was constructed between approximately 1998 and 2024 at the Llangollen Railway and Tyseley Locomotive Works.^[16]^[17]

Table of withdrawals
Year	Quantity in service at start of year	Number withdrawn	Quantity withdrawn	Locomotive numbers
1960	80	1	1	6801.
1961	79	2	3	6802/05.
1962	77	1	4	6865.
1963	76	5	9	6807/09/14/28/35.
1964	71	26	35	6800/04/06/08/10–11/18/21–22/24–25/32/34/39/42–46/50/52/63/67/73/75/78.
1965	45	45	80	6803/12–13/15–17/19–20/23/26–27/29–31/33/36–38/40–41/47–49/51/53–62/64/66/68–72/74/76–77/79.

List of Locomotives

GWR/BR Number	Name	Built	Withdrawn	Notes
6800	Arlington Grange	August 1936	June 1964
6801	Aylburton Grange	August 1936	October 1960
6802	Bampton Grange	September 1936	August 1961
6803	Bucklebury Grange	September 1936	September 1965
6804	Brockington Grange	September 1936	August 1964
6805	Broughton Grange	September 1936	March 1961
6806	Blackwell Grange	September 1936	October 1964
6807	Birchwood Grange	September 1936	December 1963
6808	Beenham Grange	September 1936	August 1964
6809	Burghclere Grange	September 1936	July 1963
6810	Blakemere Grange	November 1936	October 1964
6811	Cranbourne Grange	November 1936	July 1964
6812	Chesford Grange	November 1936	February 1965
6813	Eastbury Grange	December 1936	September 1965
6814	Enborne Grange	December 1936	December 1963
6815	Frilford Grange	December 1936	November 1965
6816	Frankton Grange	December 1936	July 1965	Considered as a candidate for preservation when the GWS were first looking to preserve a 2-cylinder mixed traffic 4.6.0
6817	Gwenddwr Grange	December 1936	April 1965
6818	Hardwick Grange	December 1936	April 1964
6819	Highnam Grange	December 1936	November 1965
6820	Kingstone Grange	January 1937	July 1965
6821	Leaton Grange	January 1937	November 1964
6822	Manton Grange	January 1937	September 1964
6823	Oakley Grange	January 1937	June 1965
6824	Ashley Grange	January 1937	April 1964
6825	Llanvair Grange	February 1937	June 1964
6826	Nannerth Grange	February 1937	May 1965
6827	Llanfrechfa Grange	February 1937	September 1965
6828	Trellech Grange	February 1937	July 1963
6829	Burmington Grange	March 1937	November 1965
6830	Buckenhill Grange	August 1937	October 1965
6831	Bearley Grange	August 1937	October 1965
6832	Brockton Grange	August 1937	January 1964
6833	Calcot Grange	August 1937	October 1965
6834	Dummer Grange	August 1937	June 1964
6835	Eastham Grange	September 1937	May 1963
6836	Estevarney Grange	September 1937	August 1965
6837	Forthampton Grange	September 1937	July 1965
6838	Goodmoor Grange	September 1937	November 1965
6839	Hewell Grange	September 1937	May 1964
6840	Hazeley Grange	September 1937	February 1965
6841	Marlas Grange	September 1937	June 1965
6842	Nunhold Grange	September 1937	November 1964
6843	Poulton Grange	October 1937	February 1964
6844	Penhydd Grange	October 1937	April 1964
6845	Paviland Grange	October 1937	September 1964
6846	Ruckley Grange	October 1937	September 1964
6847	Tidmarsh Grange	October 1937	December 1965
6848	Toddington Grange	October 1937	December 1965
6849	Walton Grange	October 1937	December 1965
6850	Cleeve Grange	October 1937	December 1964
6851	Hurst Grange	November 1937	August 1965
6852	Headbourne Grange	November 1937	January 1964
6853	Morehampton Grange	November 1937	October 1965
6854	Roundhill Grange	November 1937	September 1965
6855	Saighton Grange	November 1937	October 1965
6856	Stowe Grange	November 1937	November 1965
6857	Tudor Grange	November 1937	October 1965
6858	Woolston Grange	December 1937	October 1965
6859	Yiewsley Grange	December 1937	November 1965
6860	Aberporth Grange	February 1939	February 1965
6861	Crynant Grange	February 1939	October 1965
6862	Derwent Grange	February 1939	June 1965
6863	Dolhywel Grange	February 1939	November 1964
6864	Dymock Grange	February 1939	October 1965
6865	Hopton Grange	March 1939	May 1962
6866	Morfa Grange	March 1939	May 1965
6867	Peterston Grange	March 1939	August 1964
6868	Penrhos Grange	March 1939	October 1965
6869	Resolven Grange	March 1939	July 1965
6870	Bodicote Grange	March 1939	September 1965
6871	Bourton Grange	March 1939	October 1965
6872	Crawley Grange	March 1939	December 1965
6873	Caradoc Grange	April 1939	June 1964
6874	Haughton Grange	April 1939	September 1965
6875	Hindford Grange	April 1939	March 1964
6876	Kingsland Grange	April 1939	November 1965
6877	Llanfair Grange	April 1939	March 1965
6878	Longford Grange	May 1939	November 1964
6879	Overton Grange	May 1939	October 1965

References

^ le Fleming 1962, pp. J3–4
^ le Fleming 1962, p. J9
^ le Fleming 1962, p. J12
^ ^a ^b ^c ^d Chacksfield 2002, p. 139
^ ^a ^b le Fleming 1962, p. J14
^ ^a ^b ^c le Fleming 1960, p. H34
^ ^a ^b le Fleming 1960, p. H36
^ Bradley 1988, pp. 55–6
^ Bradley 1988, p. 56
^ Gibson 1984, pp. 144–5
^ le Fleming 1960, p. H34-6
^ ^a ^b le Fleming 1960, p. H35
^ Gibson 1984, p. 144
^ Holcroft 1971, p. 155
^ Vaughan 1983, pp. 100–05
^ 6880 Betton Grange Project
^ Streeter, Tony (August 2022). "Free Grange". Trackside (13): 28–34.

Bradley, Rodger (1988). GWR Two Cylinder 4-6-0s and 2-6-0s. Newton Abbot: David & Charles. ISBN 0-7153-8894-0.
Chacksfield, J.E. (2002). C.B. Collett: A Competent Successor. The Oakwood Library of Railway History. Usk: Oakwood Press. ISBN 0-85361-586-1. OL121.
Gibson, John C. (1984). Great Western Locomotive Design: A Critical Appreciation. Newton Abbot: David & Charles. ISBN 0-7153-8606-9.
Holcroft, Harold (1971) [1957]. An Outline of Great Western Locomotive Practice 1837-1947 (2nd ed.). Shepperton: Ian Allan. ISBN 0-7110-0228-2.
le Fleming, H.M. (November 1960) [1953]. White, D.E. (ed.). Part 8: Modern Passenger Classes. The Locomotives of the Great Western Railway (2nd ed.). Kenilworth: RCTS. ISBN 0-901115-19-3.
le Fleming, H.M. (February 1962). White, D.E. (ed.). Part 9: Standard Two-Cylinder Classes. The Locomotives of the Great Western Railway. RCTS.
Vaughan, Adrian (1983). Signalman's Twilight. London: John Murray. ISBN 0-7195-3973-0.
Whitehurst, Brian (1973). Great Western Engines, Names, Numbers, Types and Classes (1940 to Preservation). Oxford, UK: Oxford Publishing Company. pp. 60–61, 103, 132. ISBN 978-0-9028-8821-0. OCLC 815661.

External links

Wikimedia Commons has media related to GWR 6800 Class.

Great Western Railway archive entry on the 6800 class
Railways on line entry
Website of the Grange Project

Great Western Railway locomotives

Swindon
broad gauge

Brunel (1833–1837)	Haigh Foundry Mather, Dixon Sharp, Roberts Charles Tayleur Hurricane Thunderer
Gooch (1837–1864)	Ariadne Banking Bogie Caesar Firefly Hercules Iron Duke Leo Metropolitan Premier Prince Pyracmon Star Sun Victoria Waverley
J. Armstrong (1864–1877)	Hawthorn Rover Sir Watkin Standard Goods Swindon 1076
Dean (1877–1902)	Experimental locomotives (8, 14, 16) 3001 3501 3521

Wolverhampton
standard gauge

J. Armstrong (1854–1864)	7/8/30/110 17 111 302
G. Armstrong (1864–1897)	34 108 119 322 (tank) 517 633 645 655 850 1016 1901 3571

Swindon
standard gauge

Gooch (1855–1864)	57 69 77/167 79 91 93 131/310 149 England/Chancellor 157 Sharps 320 322 Beyer
J. Armstrong (1864–1877)	55 Queen/Sir Alexander 455 Metro Tank 56/717 927 Coal Goods 360 378 Sir Daniel 388 Standard Goods 439 Bicycle 481 806 1076
Dean (1877–1902)	Experimental locomotives (1, 7, 9, 10, 13, 14, 16, 1490) Armstrong 36 69 River 157 Sharpies/Cobham 1661 1813 1854 2021 2201 2301 2361 2600 Aberdare 2602 Kruger 2721 3031 Dean Single 3201 3206 3232 3252 Duke 3300 Bulldog 3521 3600 4100 Badminton Crane tanks
Churchward (1902–1921)	101 102 La France 103 President 111 The Great Bear 1361 2221 County Tank 2800 2900 Saint 3100 (later 5100) 3150 3700 City 3800 County 3901 4000 Star 4200 4300 4400 4500 4600 4700 Petrol-electric railcar Rail motors
Collett (1922–1941)	12 1101 1366 2251 2884 3000 (ex-ROD 2-8-0) 3100 3200 (later 9000) Earl 4073 Castle 4575 4800 (later 1400) 4900 Hall 5101 5205 5400 5600 5700 5800 6000 King 6100 6400 6800 Grange 7200 7400 7800 Manor 8100 Diesel railcars Diesel shunters 2
Hawksworth (1941–1947)	1000 County 1500 1600 6959 Modified Hall 9400 Gas turbine-electric 18000 18100
Proposed designs	8000 Cathedral

Absorbed
locomotives

Barry Railway	A B B1 C D E F G H K J L
Rhymney Railway	A AP B I K L L1 M P P1 R S S1
Taff Vale Railway	A C D E H K L M1 N O O1 O2 O3 O4 S T U U1 V
Other	Other absorbed locomotives