Half Janus
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| Yorkshire Engine Company Half Janus | |||||||||||||||||
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 A Yorkshire Engine Company Half Janus preserved at the Appleby Frodingham Railway Preservation Society at Scunthorpe Steelworks | |||||||||||||||||
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The Yorkshire Engine Company Half Janus is a 0-6-0 wheel arrangement, diesel electric shunting locomotive which weighs 31 long tons with a maximum speed of 20 mph. The Half Janus was built by the Yorkshire Engine Company in Sheffield between 1956 and 1965.
Each locomotive was built (out of the factory) with one Rolls-Royce C6SFL 200[1] or 220 hp (150 or 160 kW) engine which was paired with one generator to power the British Thomson-Houston traction motor mounted to the wheel set at the back of the locomotive under the cab.[2]
The locomotive was nicknamed the Half Janus because it had half the power and body of the Yorkshire Engine Company Janus. The Janus locomotive has two bonnets and the Half Janus has one. The Yorkshire engine company Janus got its name from the two-faced god, Janus.
