British Rail Class 122
| British Rail Class 122 | |
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Class 122, no. 55006, at Bewdley on the Severn Valley Railway on 15 October 2004, whilst taking part in the Railcar 50 event. This unit is painted in original BR Green livery, and is preserved on the Ecclesbourne Valley Railway.
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| In service | 1958–1995 |
| Manufacturer | Gloucester RC&W |
| Number built | 20 motor, 9 trailer |
| Number preserved | DMBS: 8 |
| Formation | Single car |
| Diagram |
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| Fleet numbers |
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| Capacity |
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| Operator(s) | British Rail |
| Specifications | |
| Car length | 64 ft 0 1⁄2 in (19.52 m) |
| Width | 9 ft 3 in (2.82 m) |
| Height | 12 ft 8 1⁄8 in (3.86 m) |
| Maximum speed | 70 mph (113 km/h) |
| Weight |
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| Prime mover(s) | Two BUT (AEC) then BUT (Leyland) of 150 hp (110 kW) (both types) |
| Power output | 300 hp (220 kW) |
| Transmission | Standard mechanical |
| Safety system(s) | AWS |
| Multiple working | ■ Blue Square |
| Track gauge | 4 ft 8 1⁄2 in (1,435 mm) |
The British Rail Class 122 diesel mechanical multiple units were built by Gloucester RC&W in 1958. Twenty single-car, double-ended driving motor vehicles, nicknamed "Bubble Cars", were built, numbered 55000–55019. These were supplemented by nine single-ended trailer vehicles, numbered 56291–56299 (some of which were later renumbered into the 54291–54299 block).
The Class 122s were built mainly for use on the London Midland Region of British Rail, although some were also used in Scotland. They were used on a variety of lightly used lines, many of which were closed during the Beeching Axe in the 1960s. Routes served included the Stourbridge Town and St Albans Abbey branch lines, as well as local services between Dundee and Arbroath. (The similar Pressed Steel Company built Class 121 single units were used on the Western Region).
Three Scottish Region cars (55013–55015) were converted to carry parcels traffic and were reclassified Class 131, though the vehicles themselves were not renumbered.
Upon privatisation of Britain's railways, the Class 122 fleet has been withdrawn from normal service. However several units were operated by EWS and Network Rail (previously Railtrack) in departmental service, reclassified as Class 960.
"Bubble Cars" have proved popular for preservation on heritage railways.
Dapol are planning on producing models of the class 121 and 122 single car DMU in a variety of liveries.
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Wikipedia