Wikipedia

British Rail Class 11

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.

British Rail Class 11
12104 at Stratford MPD in July 1967
Type and origin
Power typeDiesel-electric
BuilderLMS/BR Derby & BR Darlington
Build date1945–1952
Total produced120
Specifications
Configuration:
​
 • Whyte0-6-0DE
 • UICC
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter4 ft 0+1⁄2 in (1.232 m)
Minimum curve3.5 chains (70.41 m)
Wheelbase11 ft 6 in (3.505 m)
Length29 ft 1+1⁄2 in (8.88 m)
Width8 ft 5 in (2.565 m)
Height12 ft 5+1⁄2 in (3.797 m)
Loco weight47.4 long tons (48.2 t; 53.1 short tons)
Fuel capacity660 imp gal (3,000 L; 790 US gal)
Prime moverEnglish Electric 6KT
GeneratorEnglish Electric 801 — 441 A, 430 V DC
Traction motorsEnglish Electric 506, DC, 2 off
CylindersStraight 6
TransmissionDiesel-electric, double reduction gearing
MU workingNot fitted
Train heatingNone
Loco brakeAir
Performance figures
Maximum speed20 mph (32 km/h)
Power outputEngine: 350 hp (261 kW)
Tractive effortMaximum: 34,900 lbf (155.2 kN)
Brakeforce32.2 long tons-force (321 kN)
Career
Operators
Number in class
  • WD: 14 (10 to NS)
  • LMS/BR: 106
Numbers
  • WD: 70260–70273
  • LMS: 7120–7129
  • BR: 12033–12138
Axle load classRA 5
Withdrawn1967–1972
Disposition9 currently preserved, 1 destroyed in preservation, remainder scrapped

Overview

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Numbering

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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

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Main articles: NS Class 600 and Victorian Railways F class (diesel)

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

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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

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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.
  1. ^ accident damage
  2. ^ reinstated January, withdrawn June

Post-BR use

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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
Harry Needle Railroad Company (HNRC)
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
HNRC
12093 NCB, Widdrington Disposal Point[5] Scrapped
12098 NCB, Philadelphia Loco Shed[5] Scrapped
HNRC
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

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12099 preserved on the Severn Valley Railway

Only one of the LMS examples is preserved being:

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

See also

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Wikimedia Commons has media related to British Rail Class 11.

Footnotes

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  1. ^ "F class d/e locomotives". www.victorianrailways.net. Retrieved 10 August 2008.
  2. ^ "Rangerlokomotiv litra ML". www.jernbanen.dk.
  3. ^ Strickland 1983, pp. 51–52.
  4. ^ Strickland 1983, pp. 52.
  5. ^ 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.
  6. ^ "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

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Further reading

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  • McManus, Michael. Ultimate Allocations, British Railways Locomotives 1948 - 1968. Wirral. Michael McManus.
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