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Encyclopedia > British Rail Derby Lightweight
Derby Lightweight power car no. 79018 on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event. This vehicle has been restored to its original condition using a grant from the lottery heritage fund, and is preserved at the Midland Railway Centre.
Derby Lightweight power car no. 79018 on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event. This vehicle has been restored to its original condition using a grant from the lottery heritage fund, and is preserved at the Midland Railway Centre.
Derby Lightweight trailer no. 975008 (79618) on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event. This vehicle has yet to be restored to original condition, and is preserved at the Midland Railway Centre.
Derby Lightweight trailer no. 975008 (79618) on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event. This vehicle has yet to be restored to original condition, and is preserved at the Midland Railway Centre.

The British Rail Derby Lightweight diesel multiple units, were the first such trains to be built en-masse for British Railways. The units were built at BR's Derby Works from 1954 to 1955. The units were built in various formations, including two single car units, 12 power-twin 2-car units, 84 power-trailer 2-car units, and four 4-car units. Contemporaneous with these units was the unique Battery Electric Multiple Unit. Download high resolution version (2048x1536, 675 KB)BR Derby Lightweight power car no. ... Download high resolution version (2048x1536, 675 KB)BR Derby Lightweight power car no. ... Load Street, Bewdley Bewdley is a small town in Worcestershire, England. ... LMS Ivatt Class 2MT 2-6-0 no. ... A play here! sign outside a newsagent, incorporating the National Lotterys logo of a stylised hand with crossed fingers. ... The Midland Railway, Butterley is a complex of railway museum exhibits in Derbyshire, within the Midland Railway Centre. ... Download high resolution version (2048x1536, 662 KB)BR Derby Lightweight trailer no. ... Download high resolution version (2048x1536, 662 KB)BR Derby Lightweight trailer no. ... Load Street, Bewdley Bewdley is a small town in Worcestershire, England. ... LMS Ivatt Class 2MT 2-6-0 no. ... The Midland Railway, Butterley is a complex of railway museum exhibits in Derbyshire, within the Midland Railway Centre. ... Logo of British Rail British Railways (BR), later rebranded as British Rail, ran the British railway system from the nationalisation of the Big Four British railway companies in 1948 until its privatisation in stages between 1994 and 1997. ... DMU of Great Poland Voivodship in Poznan, Poland A diesel multiple unit (DMU) can be: a multiple unit powered by a diesel engine. ... Derby (pronounced dar-bee ) is a city in the East Midlands of England. ... The Battery Electric Multiple Unit was an experimental two-car Multiple unit, built at the same time and in the same style as the prototype Derby Lightweight Diesel multiple units. ...

Contents


Operations

The first units were introduced on services around the West Riding of Yorkshire, namely Leeds to Bradford services. Subsequent units were introduced onto services in Cumbria, Lincolnshire, Norfolk, and Birmingham to Sutton Coldfield, Bletchley to Buckingham to Banbury, and East London lines services. The West Riding as an administrative county prior to its abolition in 1974. ... The White Yorkshire rose. ... Leeds is a city in the metropolitan borough of the City of Leeds in West Yorkshire in the north of England. ... Bradford is the major settlement in the City of Bradford Metropolitan District, in the county of West Yorkshire in the north of England. ... Cumbria is a county in the North West region of England. ... Lincolnshire (abbreviated Lincs) is a county in the East Midlands of England. ... Norfolk (pronounced NOR-fk) is a low-lying county in East Anglia in the east of southern England. ... The city from above Centenary Square. ... Map sources for Sutton Coldfield at grid reference SP1395 Sutton Coldfield constituency shown within Birmingham Sutton Coldfield is an area of north-eastern Birmingham, England and is home to two of the foremost Residential Estates in the Midlands, Little Aston Park and the Four Oaks Estate, both home to the... Bletchley is a town in what is now Milton Keynes new city. ... Buckingham is a town situated in north Buckinghamshire approximately 10 miles from the border with Northamptonshire. ... The modern shopping centre in Banbury is built alongside the Oxford Canal Map sources for Banbury at grid reference SP4540 Banbury is a market town on the River Cherwell in Oxfordshire, England. ...


These units were an outstanding success, helping to reduce the operating costs of branchlines. As such, British Railways ordered many more DMU vehicles from various builders over the next decade, thus helping to eliminate steam locomotives. However, as these units were non-standard compared other later DMU vehicles, they were subject to early retirement. The last units were withdrawn from normal traffic in 1969.


Formations

Four different sorts of formation were created from the 217 cars built of this type, as follows:

 Power Twins: DMBS DMCL DMBS DMCL 79000 + 79500 to 79007 + 79507 79184 + 79189 to 79188 + 79193 
 Power Trailers: DMBS DTCL DMBS DTCL 79008 + 79600 to 79033 + 79625 79034 + 79250 to 79046 + 79262 79118 + 79639 to 79141 + 79662 79142 + 79684 79143 + 79663 to 79149 + 79669 79169 + 79670 to 79181 + 79682 
 Four Car Units: DMS TBSL TSL DMC 79150 + 79325 + 79400 + 79508 79151 + 79326 + 79401 + 79509 79152 + 79327 + 79402 + 79510 79153 + 79328 + 79403 + 79511 79154 + 79329 + 79404 + 79512 
 Single Car Units: DMBS 79900 79901 

79683 was left over as a spare DTCL, and took the place of 79649 in 1957, when this was converted into a special saloon. It was later renumbered 999510 in the departmental saloon series and was eventually scrapped in 1981.


In 1962 three of the power twin units were converted to power trailer units, when 79191-79193 were rebuilt as DTCL vehicles and renumbered 79633-79635.


Departmental Use

A number of cars from these units were subsequently transferred to departmental (non-revenue earning) use after withdrawal from normal service:

  • 79018 + 79612 were rebuilt as an ultrasonic test train based at Reading, numbered 975007 + 975008. Replaced by unit 901001.
  • 79900 was rebuilt as test coach "Iris", based at Bletchley, numbered 975010. Later transferred to the BR Research Division at the Railway Technical Centre at Derby, for its last few years in traffic, it was repainted into original BR Green livery. Replaced by unit 901002.
  • 79185 was taken into departmental use for brake trials, numbered 975012. It was scrapped in 1970.
  • 79250 and 79252 were taken into departmental use as staff messrooms, numbered 975013 and 975014. They were scrapped in 1978 and 1982 respectively.
  • 79649, the inspection saloon mentioned above, took its place in the departmental series as 999510.

St Marys Church and market Reading is a town and unitary authority in Berkshire in England, at the confluence of the River Thames and River Kennet, halfway between London and Oxford. ... Class 960, no. ... Bletchley is a town in what is now Milton Keynes new city. ... Class 960, no. ...

Preservation

Thanks to their extended life in departmental service, one 2-car unit and a single car unit survive in preservation, the former following a high-profile campaign.

Vehicle Nos. Location Comments Departmental Nos.
DMBS DTC DMBS DTC
79018 79612 Midland Railway Butterley Used as ultrasonic test train. 975007 975008
79900 - Midland Railway Butterley Used as test coach "Iris". 975010 -

Midland Railway 156 Class 158A in the museum amongst other exhibits. ... Midland Railway 156 Class 158A in the museum amongst other exhibits. ...

External links

  • Preserved Carriage Database
British Rail diesel multiple units
Diesel locomotives - Electric locomotives - DMU - DEMU - AC EMU - DC EMU - Departmental units
First-generation diesel units
Classes: 100 - 101 - 102 - 103 - 104 - 105 - 106 - 107 - 108 - 109 - 110 - 111 - 112 - 113 - 114 - 115
116 - 117 - 118 - 119 - 120 - 121 - 122 - 123 - 124 - 125 - 126 - 127 - 128 - 129 - 130 - 131
Pre-TOPS: British United Traction - Derby Lightweight - Metro-Cammell - Railbus
GWR Railcars - LMS Railcars
Second-generation diesel units
Classes: 140 - 141 - 142 - 143 - 144 - 150 - 151 - 153 - 154 - 155 - 156 - 157 - 158 - 159 - 165 - 166
168 - 170 - 171 - 175 - 180 - 185
Diesel-electric units
Classes: 201 - 202 - 203 - 204 - 205 - 206 - 207 - 210 - 220 - 221 - 222 - 251 - 252 - 253 - 254 - 255
SR designation: 3D - 3H - 3R - 3T - 4L - 6B - 6L - 6S
Departmental units
Classes: 901 - 930 - 950 - 951 - 960 - APT-E - MPV

  Results from FactBites:
 
British Rail Derby Lightweight at AllExperts (580 words)
Derby Lightweight power car no. 79018 on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event.
Derby Lightweight trailer no. 975008 (79612) on display at Bewdley on the Severn Valley Railway on 15th October 2004, as part of the Railcar 50 event.
The British Rail Derby Lightweight diesel multiple units, were the first such trains to be built en-masse for British Railways.
  More results at FactBites »


 

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