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British Rail Class 121 facts for kids

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British Rail Class 121
W55033 at Colne Valley Railway 2.JPG
W55033 at the Colne Valley Railway in original green livery
In service 1960 - present
Manufacturer Pressed Steel Company
Family name Bubble Car
Number built 16
Formation 1 car per trainset
Operator(s) Arriva Trains Wales

Chiltern Railways

Network Rail
Car length 64 ft 6 in (19,660 mm)
Width 9 ft 3 in (2,820 mm)
Height 12 ft 4 in (3,760 mm)
Maximum speed 70 mph (110 km/h)
Weight 38 tons

Sixteen Class 121 single-car driving motor vehicles were built from 1960, numbered 55020-55035. These were supplemented by ten trailer vehicles, numbered 56280-289 (later renumbered 54280-289). They had a top speed of 70 mph, with slam-doors, and vacuum brakes. The driving motor vehicles were nicknamed "Bubble Cars" by some enthusiasts.

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British Rail Class 121 Facts for Kids. Kiddle Encyclopedia.