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British Rail Class 107

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British Rail Class 107
(Derby short heavyweight)
Diesel train in station
107444 in Strathclyde livery at Prestwick
In service1960–1991
ManufacturerBR Derby Works
Built atDerby Works
Family nameFirst generation
ReplacedSteam locomotives and carriages
Constructed1960
Number built26 sets (78 cars)
Formation3-car sets: DMBS-TSL-DMCL
CapacityDMBS: 52 second-class
TSL:71 second-class
DMCL: 12 first-class, 53 second-class
OperatorsBritish Rail
Specifications
Car length58 ft 1 in (17.70 m)
Width9 ft 3 in (2.82 m)
Height12 ft 4 in (3.76 m)
Maximum speed70 mph (113 km/h)
WeightDMBS: 35.0 tonnes (34.4 long tons; 38.6 short tons)
TCL: 28.5 tonnes (28.0 long tons; 31.4 short tons)
DMCL: 35.5 tonnes (34.9 long tons; 39.1 short tons)
Prime mover(s)Two BUT 6-cylinder diesels per power car
Power output600 bhp (447 kW) per set,
300 bhp (224 kW) per power car,
150 bhp (112 kW) per engine
TransmissionMechanical: 4-speed epicyclic gearbox
Safety system(s)AWS
Coupling systemScrew-link, British Standard gangways
Multiple working Blue Square
Track gauge1,435 mm (4 ft 8+12 in)

The British Rail Class 107 diesel multiple units were built by the Derby Works of British Railways and were introduced in 1960. The class looked similar to the later Class 108 units, but were heavier, being built from steel.

Usage

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The Class 107s were initially built for suburban workings on the south side of Glasgow and the Class remained in BR's Scottish Region for its service life.[1] When new, a number were used on Dundee/Arbroath services. In later years, they were used almost exclusively on services radiating from Glasgow Central to such destinations as Barrhead, East Kilbride, and Kilmacolm, and - prior to electrification - on Glasgow/Ayrshire services (especially Largs). Most were withdrawn from service by 1991.

Many of the units went into departmental use after being withdrawn from passenger use.[2] The class suffered from a structural problem, however, which could result in the bodies separating from the chassis under heavy braking.

Orders

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Lot No. Car Type Qty Fleet number Notes
30611 Driving Motor Brake Second (DMBS) 26 51985–52010
30612 Driving Motor Composite with lavatory (DMCL) 26 52011–52036
30613 Trailer Second with lavatory (TSL) 26 59782–59807

Originally, there were no fixed set formations, but eventually, sets were numbered as 107425-449 in DMBS order (the DMCLs & TSLs were formed into the sets at random). Renumbered to 107725-749 in 1988 to avoid confusion of set numbers with new 156 units which also had 4xx numbers. Renumbered again to 107025-049 about 1990 to avoid similar confusion with new class 158s numbered in 7xx series.

Other technical details

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  • Coupling Code: Blue Square
  • Transmission: Standard mechanical

For coupling codes see British United Traction

Preservation

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Several examples of the class have entered preservation.

Set number Vehicle numbers Livery Location Notes
DMBS TSL DMCL
- 51990 - - Strathclyde Strathspey Railway Donor of spare parts
- 51993 - 52012 BR Green Tanat Valley Light Railway Under Restoration
- 52005 - 52031 BR Green Tanat Valley Light Railway Operational
- 52006 - 52025 BR Green Somerset & Dorset Railway Heritage Trust Operational
- 52008 - 52030 BR Green Strathspey Railway Under Restoration
- - - 52029 Strathclyde Fife Heritage Railway Purchased from GWR in 2023 and now undergoing restoration.[3]
- - 59791 - BR Green Tanat Valley Light Railway Static Display

References

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Notes

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  1. ^ "Class 107 Derby 3-car DMUs". Railcar.co.uk. Retrieved 21 June 2021.
  2. ^ "Non-passenger use". Railcar.co.uk. Retrieved 21 June 2021.
  3. ^ "Fleet List Fife Heritage Railway". fifeheritagerailway.co.uk. 16 October 1924.

Sources

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  • Motive Power Recognition: 3 DMUs. Colin J. Marsden
  • British Railway Pictorial: First Generation DMUs. Kevin Robertson
  • British Rail Fleet Survey 8: Diesel Multiple Units- The First Generation. Brian Haresnape
  • A Pictorial Record of British Railways Diesel Multiple Units. Brian Golding
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