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Specifications
Specifications
Configuration:;
• Whyte	0-6-0DE
• UIC	C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	4 ft 0+1⁄2 in (1.232 m)
Minimum curve	3.5 chains (70.41 m)
Wheelbase	11 ft 6 in (3.505 m)
Length	29 ft 1+1⁄2 in (8.88 m)
Width	8 ft 5 in (2.565 m)
Height	12 ft 5+1⁄2 in (3.797 m)
Loco weight	47.4 long tons (48.2 t; 53.1 short tons)
Fuel capacity	660 imp gal (3,000 L; 790 US gal)
Prime mover	English Electric 6KT
Generator	English Electric 801 — 441 A, 430 V DC
Traction motors	English Electric 506, DC, 2 off
Cylinders	Straight 6
Transmission	Diesel-electric, double reduction gearing
MU working	Not fitted
Train heating	None
Loco brake	Air

Type and origin
Type and origin
Power type	Diesel-electric
Builder	LMS/BR Derby & BR Darlington
Build date	1945–1952
Total produced	120

British Rail Class 11
British Rail Class 11
	12104 at Stratford MPD in July 1967
Power type
Type and origin
Power type	Diesel-electric
Builder	LMS/BR Derby & BR Darlington
Build date	1945–1952
Total produced	120
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0DE
• UIC	C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	4 ft 0+1⁄2 in (1.232 m)
Minimum curve	3.5 chains (70.41 m)
Wheelbase	11 ft 6 in (3.505 m)
Length	29 ft 1+1⁄2 in (8.88 m)
Width	8 ft 5 in (2.565 m)
Height	12 ft 5+1⁄2 in (3.797 m)
Loco weight	47.4 long tons (48.2 t; 53.1 short tons)
Fuel capacity	660 imp gal (3,000 L; 790 US gal)
Prime mover	English Electric 6KT
Generator	English Electric 801 — 441 A, 430 V DC
Traction motors	English Electric 506, DC, 2 off
Cylinders	Straight 6
Transmission	Diesel-electric, double reduction gearing
MU working	Not fitted
Train heating	None
Loco brake	Air
Maximum speed
Performance figures
Maximum speed	20 mph (32 km/h)
Power output	Engine: 350 hp (261 kW)
Tractive effort	Maximum: 34,900 lbf (155.2 kN)
Brakeforce	32.2 long tons-force (321 kN)
Operators
Career
Operators	War Department; Danske Statsbaner (DSB); Nederlandse Spoorwegen (NS); London, Midland and Scottish Railway; British Railways; National Coal Board; HNRC; Imperial Chemical Industries (ICI);
Number in class	WD: 14 (10 to NS); LMS/BR: 106;
Numbers	WD: 70260–70273; LMS: 7120–7129; BR: 12033–12138;
Axle load class	RA 5
Withdrawn	1967–1972
Disposition	9 currently preserved, 1 destroyed in preservation, remainder scrapped

The British Rail Class 11 was applied to a batch of diesel shunting locomotives built from April 1945 to December 1952, based on a similar earlier batch built by the London, Midland and Scottish Railway (LMS) between 1934 and 1936.

Overview

Numbering

An initial batch of twenty locomotives was built during World War II, fourteen of which were built for the War Department, with the first ten of these (70260–70269) subsequently going to the Nederlandse Spoorwegen post-war as NS 501–510. LMS numbers 7120–7126 went straight into LMS stock, and a follow-up batch was built, 7129 being the last diesel shunter to be built for the LMS. British Railways continued to build the class from 1948 to 1952, using numbers M7130–M7131 and 12045–12138. 7120–7129 and M7130–M7131 became BR numbers 12033–12044. The whole class of 12033–12138 became Class 11. Locomotives up to 12102 were built at LMS/BR Derby and 12103–12138 at BR Darlington.

Export locomotives

Close to 100 almost identical machines were built by English Electric and supplied to Nederlandse Spoorwegen (NS) as their 500 Class & 600 Class diesel locomotives. In addition to the exported 501–510 mentioned above, 500 Class also included 511–545. Sixty-five of the 600 Class locomotives were built by English Electric between 1950 and 1957, numbered 601–665, at either Dick, Kerr & Co. Works (601–610) in Preston or Vulcan Foundry Works (remainder) in Newton-le-Willows. A further batch of 15 locomotives were exported without engines so that they could be fitted as such in the Netherlands. These were numbered 701–715.

Another export order was to Australia, with 16 locomotives built in 1951 but with the design modified for use on 5 ft 3 in gauge railways. The Victorian Railways bought ten, which were designated as F class, and six were bought by the State Electricity Commission of Victoria for shunting on sidings connected to Victorian Railways tracks.^[1]

One member of Class 11 was built for transporting British soldiers in the former Nazi-occupied countries. Throughout the liberation period it travelled through France, Belgium and the Netherlands before finally reaching Germany. It was then used for transporting British troops and for shunting, and was occasionally used on a few branch lines until 1957. The reason for this was that after the war the newly founded Deutsche Bundesbahn was slowly building up its locomotive fleet. As the more powerful German engines began to roll out, the Class 11 diesel was used less and in 1953 it was withdrawn. It stood in Hamm Engine shed, in West Germany, until it was bought by Danish State Railways in 1957. It was then renumbered to DSB ML 6 and liveried in the dark green that the Danish diesel shunters were painted in. It served on shunting duties in Copenhagen yards until 1973, when it was finally withdrawn for good; it was scrapped in 1974 in Hedehusene in Denmark.^[2]

Technical details

The diesel engine is an English Electric 6-cylinder, 10-inch bore by 12-inch stroke (254 mm by 305 mm); 4-stroke, 6KT and the traction motors are two: EE506 axle-hung, nose-suspended, force-ventilated traction motors with 21.7:1 double reduction gear drive. The main generator is an English Electric EE801, 441 A at 430 V.

Withdrawal

The 106 locomotives of British Railways were withdrawn between May 1967 and November 1972.

Table of withdrawals^[3]
Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers
1967	106	5	12068, 12104/07/23/29.
1968	101	17	12034–37/39–44/72, 12119–20/24/26/37–38.
1969	84	24	12033/38/45–48/57/59/64/66–67/70/86/92/95, 12100/12/16^[a]–17/25/31/33/35.
1970	60	11	12050/54/62/81/89/91, 12101/06/14–15/28.
1971	49	40	12049/51–53/55–56/58/60–61/65/69/71/73 12075–78/80/82–85/87–88/90/93–94/97–99, 12102–03/05/08/11/18/21–22/36.
1972	9	10	12063/74/79, 12103^[b]/09–10/27/30/32/34.

^ accident damage
^ reinstated January, withdrawn June

Post-BR use

Sixteen locomotives were sold to the National Coal Board, and were used in the North East England, South Wales and the Kent Coalfield.^[4]


Locomotive Number	Company	Disposition
12049	Day & Son, Brentford Town Goods Depot^[5]	Scrapped
12052	National Coal Board (NCB), Widdrington Disposal Plant^[5]	Scrapped
12054	A.R. Adams Ltd., Newport Docks^[5]	Scrapped
12060	NCB, Philadelphia Loco Shed^[5]	Scrapped
12061	NCB, Natgarw Coking Plant^[5]	Scrapped
12063	NCB, Natgarw Coking Plant^[5]	Scrapped
12071	NCB, Natgarw Coking Plant^[5]	Scrapped
12074	NCB, Swalwell Disposal Point^[5]	Scrapped
12074	Harry Needle Railroad Company (HNRC)	Scrapped
12082	U.K.F. Fertilisers Ltd., Ince Marshes^[5]	Scrapped
12083	Tilcon Ltd., Swinden Limeworks, Skipton.^[5]	Preserved - Battlefield Line
12084	NCB, Bates Colliery^[5]	Scrapped
12088	NCB, Swalwell Disposal Point^[5]	Preserved - Aln Valley Railway
12088	HNRC	Preserved - Aln Valley Railway
12093	NCB, Widdrington Disposal Point^[5]	Scrapped
12098	NCB, Philadelphia Loco Shed^[5]	Scrapped
12098	HNRC	Scrapped
12099	NCB, British Oak Disposal Point^[5]	Preserved - Severn Valley Railway
12119	NCB, Philadelphia Loco Shed^[5]	Scrapped
12122	NCB, British Oak Disposal Point^[5]	Scrapped
12131	NCB, Snowdown Colliery^[5]	Preserved - North Norfolk Railway
12133	NCB, Philadelphia Loco Shed^[5]	Scrapped

Preservation

Only one of the LMS examples is preserved being:

AD601 at Lakeside and Haverthwaite Railway

The following BR examples of Class 11 diesel shunters are preserved:

12052 at Caledonian Railway
12077 at Midland Railway – Butterley
12083 at Battlefield Line Railway
12088 at Aln Valley Railway
12093 at Caledonian Railway
12099 at Severn Valley Railway
12131 at North Norfolk Railway
A ninth example 12049 (renumbered from 12082) is preserved at the Watercress Line in Hampshire. At one time it was re-registered as 01553, in TOPS Class 01/5, carried both numbers and was owned by the Harry Needle Railroad Company. 12082 was renumbered to 12049 in October 2010 and painted in BR green with a late crest but without the yellow/black ends. This was as a replacement for the original Mid-Hants locomotive 12049 that was scrapped after suffering catastrophic damage during an engine shed fire on 26 July 2010.^[6]

Footnotes

^ "F class d/e locomotives". www.victorianrailways.net. Retrieved 10 August 2008.
^ "Rangerlokomotiv litra ML". www.jernbanen.dk.
^ Strickland 1983, pp. 51–52.
^ Strickland 1983, pp. 52.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s Industrial Locomotives 1982 including preserved and minor railway locomotives. Industrial Railway Society. 1982. ISBN 0-901096-43-1.
^ "End of the Line: Disposals-Class 11". www.wnxx.com. 1 November 2010. Archived from the original on 10 May 2012. Retrieved 30 March 2024.

References

Strickland, David C. (September 1983). Locomotive Directory: Every Single One There Has Ever Been. Camberley: Diesel and Electric Group. pp. 51–52. ISBN 978-0-906375-10-5. OCLC 16601890. OL 27959920M. Wikidata Q105978499.