Class 121 'Bubble Car' Profile and Models
121034 at Didcot Railway Centre in May 2011. ©Andrew Bone
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Built between 1960 and 1961, a total of 16 Class 121 single car DMUs were built by Pressed Steel for use on the Western Region of British Rail. Featuring slam-doors, vacuum brakes and a top speed of 70mph; the 'Bubble Cars' were used on lightly used branch lines and thanks to their affordability, helped to keep rural services running. Remarkably, they have the honour of being Britain's longest serving DMU, having only been fully withdrawn in 2017. These versatile units have proven to be popular on heritage lines too, with 12 currently preserved. |
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Type of Unit |
Single-Car Diesel Multiple Unit |
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Builder |
Pressed Steel Company |
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Build Dates |
1960 to 1961 |
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Total Built |
16 |
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Power Output |
300 hp (2 x 150hp AEC or Leyland engines) |
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Top Speed |
70 mph |
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Passenger Capacity |
65 |
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Operated By |
Arriva Trains Wales British Rail Chiltern Railways Silverlink Network Rail Railtrack |
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Main Duties |
Local Passenger |
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In Service Until |
2017 |
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Surviving Units |
15 |
OO Gauge (1:76 Scale)
GWR chocolate and cream
BR non-standard
BR green with coaching stock roundel
BR chocolate and cream
BR blue
BR blue and grey
NSE - Network SouthEast
Railtrack
Chiltern Railways
SilverLink
Network Rail
Arriva Trains Wales
Awaiting Categorisation
N Gauge
BR maroon
O Gauge (1:43 Scale)
Products awaiting categorisation
| Scale | Brand | Image | Construction Type | DCC Capability | Product Code | Product Title | Livery |
|---|---|---|---|---|---|---|---|
| N Gauge | BH Enterprises |
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RTR/RTUse/Pre-assembled | Not set |
DMU2BH View |
Class 121 Pressed Steel single unit and trailer | Awaiting Categorisation |
