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British Rail Janus

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Yorkshire Engine Company ‘Janus’
Typical Janus locomotive at a steelworks.
Type and origin
Power typeDiesel-electric
BuilderYorkshire Engine Company
ModelJanus
Specifications
Configuration:
​
 • UICC
Wheel diameter3 ft 8 in (1.118 m)
Loco weight48 long tons (49 t)
Prime mover2 Rolls Royce C6SFL engines
Traction motorsRolls Royce
Performance figures
Top speed23 mph (37 km/h)
Power output400 hp (300 kW)
Tractive effort30,000 lbf (133.4 kN)

Janus and Taurus were two shunting locomotives by the Yorkshire Engine Company and loaned to British Railways for demonstrations[1]. However, BR did not buy any production versions after testing[1]. At least one other Yorkshire Engine Company locomotive was loaned to British Railways in the 1960s.[1]


  1. 1 2 3 "Taurus". stephenjohnsonrailways.co.uk. Retrieved 2026-08-24.
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