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British Rail Class 201

From Wikipedia, the free encyclopedia
British diesel-electric multiple unit trains

British Rail Class 201
1004 atLondon Cannon Street in 1984
In service1957–1986
ManufacturerEastleigh andAshford Works
Number built42 vehicles (7 units)
Number preserved1 unit
FormationDMBSO-TSOL-TSOL-TFK-TSOL-DMBSO
OperatorsSouthern Region of British Railways
Specifications
Car body constructionSteel
Car length17.67 m (58 ft 0 in)
Width2.74 m (9 ft 0 in)
Height3.82 m (12 ft 6 in)
DoorsHinged slam (now centrally locked)
Maximum speed75 mph (121 km/h)
Weight55 long tons (56 t; 62 short tons)
Traction systemDEMU
Prime mover(s)English Electric 4SRKT Mark II, 2 per set
Traction motorsEnglish-Electric EE507 traction motors, 4 per set
Power output1,000 hp (750 kW)
BogiesBR Standard. ExEMU coaches Commonwealth or B5
Braking system(s)Air/EP
Coupling systemDrop-headbuck-eye[1]
Multiple workingwith Classes 201 to 207
Track gauge1,435 mm (4 ft 8+12 in)standard gauge

TheBritish Rail Class 201 (or6S) six-cardiesel-electric multiple units (DEMUs) were built in 1957–1958 atEastleigh and underframes were built atAshford.

The Southern Region Class 201-207 DEMUs are nicknamed 'Thumpers' due to the noise they made while in motion, owing to the four cylinder engines.[2][3]

These units were built for theLondon-Hastings line, with a narrow body profile to accommodate the restricted tunnelloading gauge on that line.

Technical details

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Power car (two per six-car set)

  • Introduced: 1957
  • Weight: 55 long tons (56 t; 62 short tons)
  • Engine:English Electric 4-cylinder type 4SRKT Mark II of 600shaft horsepower (450 kW) at 850rpm
  • Transmission: Electric, two English Electric type EE507 traction motors rated at 186 kW (249 hp) each. (Equivalent to 1,000 bhp or 750 kW per 6-car set)
  • Maximum tractive effort: 12,500 lbf (56 kN) per car; 25,000 lbf (110 kN) per unit
  • Driving wheel diameter: 40 in (1,016 mm) Driving Bogie; 42 in (1,067 mm) Trailer Bogie
  • Coupling code: 'Buck-Eye' Type allowing coupling to any BR(S) 20x,4xx Units
  • Train heating:Electric

Fleet details

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Key:PreservedDepartmental UseScrapped

Original 6S Units

Unit No.DMBSOTSOLTSOLTFKTSOLDMBSOWithdrawn[4]Status
NewOld
20100110016000060500605016070060502600015/1986Preserved
-10026000260503605046070160505600035/1986Sandite unit1066
-100360004605066050760702605086000511/1964Disbanded, vehicles later scrapped
-10046000660509605106070360511600074/1986Scrapped
-10056000860512605136070460514600094/1986Scrapped
-10066001060515605166070560517600114/1986Scrapped
-10076001260518605196070660520600134/1986Scrapped

Departmental Units

Unit No.DMTDMWithdrawnStatus
NewOld
10661002977376(ex-60002)977379(ex-60504)977377(ex-60003)1994Scrapped (1994)

Reformations

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Some units were disbanded during the mid 1960s to provide stock for theClass 206 'Tadpole' Units and to reform other 'Hastings Sets' after theHither Green rail crash. Set 1002 was later reformed to its original formation in 1979, but set 1004 was reformed with only its original power cars and some trailers from sister Class 202 and 203 Hastings Sets. Set 1003 was reformed only for the last few months of Hastings DEMU service after its power cars were used for spares, again with none of its original trailers. Set 1007 also suffered a reformation in 1969 but it remained as a full six coach set until withdrawal in 1986.[5]

Preservation

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1001 atMinehead while working a railtour fromHastings

Most units were withdrawn and scrapped following electrification of the route in 1986. However, two complete units, Class 201 (6S) No. 1001 andClass 202 (6L) No. 1013, were preserved by Hastings Diesels Ltd., which is based atSt Leonards-on-Sea. Vehicle no. 60000 has been namedHastings after the town which it previously worked to. This was mainline operational from the unit's revival in 1996 to 2006, but this motor coach was not prioritised when it needed fitting with Central Door Locking (CDL) &On-Train Monitoring Recorders (OTMR). 60000 also needed an overhaul to its bodywork and because of the costs involved, both financial and manpower, this work has not been carried out yet, which means it is currently in storage at St Leonards Depot. The two mainline certified motor coaches that are currently in use on the Hastings Diesel and are fitted with CDL and OTMR are 60119 (certified in 2023) and 60118Tunbridge Wells (certified in 1996). The unit operates severalmainline railtours a year, starting from Hastings and going to various destinations; mainly across the South of England, but sometimes further afield.

Additionally, the unit has been used in some unusual non-passenger workings. In July 2015, a crash-damagedSoutheasternClass 375Electrostar EMU was dragged very slowly at 5 miles per hour (8 km/h) by HDL's 2 motor coaches fromCanterbury West to Ramsgate Depot using a special Dellner coupling-adapter, having collided into a herd of cattle that had strayed onto the line betweenWye andChilham.[6] In August 2015, the 2 motor coaches spent a week atThameslink's new depot inThree Bridges shunting some of the new-builtClass 700Desiro City trains.[6]

Hastings Diesels Limited owns thirteen vehicles which are in various states of readiness. Two of these are part restored trailer 60527 and unrestored motor coach 60001, which formed the motive power for the original unit 1001. They have said that there will be no serious work done to 60001 until work to motor coach 60019 (60119) is completed, as this one apparently needs less work done to it, which is cheaper, and returning 60000Hastings to front line service is also finished.[7]

One other vehicle survives, the former buffet car 60750, the only survivor of the Hither Green crash. It was taken into BR's Research division as RDB 975386 and heavily modified to test the tilt and suspension systems for theAPT-P. Previously under restoration at theElectric Railway Museum, it moved to Shackerstone on theBattlefield Line in 2017.[8]

See also

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References

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  1. ^Marsden, Colin (2011).Traction Recognition. Hersham: Ian Allan Publishing Ltd. p. 162.ISBN 978-0-7110-3494-5.
  2. ^"Preserved Thumpers".www.preservedthumpers.com. Archived fromthe original on 19 August 2014.
  3. ^"Multiple Units".www.eorailway.co.uk. Archived fromthe original on 13 November 2017.
  4. ^Withdrawal Dates fromH. Longworth,British Railways First Generation DMUs, Oxford Publishing Company 2011ISBN 978-0-86093-612-1
  5. ^M. Welch,SOUTHERN DEMUs, Capital Transport 2004
  6. ^ab"Hastings Diesels Limited – DEMU Diary".
  7. ^Marsden, Colin (2011).Traction Recognition. Hersham: Ian Allan Publishing Ltd. p. 163.ISBN 978-0-7110-3494-5.
  8. ^"Lab 4 leaves HDL for a new home".Hastings Diesels Limited. 8 June 2003.

Further reading

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External links

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Wikimedia Commons has media related toBritish Rail Class 201.
Pre-TOPS classification
British Rail first generation
Southern Region diesel-electric
British Rail second generation
Privatisation era
Prototype and non-passenger use
Proposed, unbuilt and reclassified
Design families
Southern Railway andBRSouthern Region rolling stock designations
Diesel multiple units
Electric multiple units
Miscellaneous vehicles
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