British Rail Janus

shunting locomotive build by Yorkshire Engine Company

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

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)