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New Zealand DF class locomotive (1979)
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New Zealand DF class locomotive (1979) : ウィキペディア英語版
New Zealand DF class locomotive (1979)

The New Zealand DF class locomotive of 1979 is a class of 30 Co-Co diesel-electric locomotives built by General Motors Diesel of Canada between 1979 and 1981. Between 1992 and 1997, all the locomotives were rebuilt as the DFT class, a turbocharged version of the DF.
The class should not be confused with the English Electric NZR DF class of 1954; as all of the old DFs had been retired by mid-1975, the 'DF' classification was free to be re-used.
==Design==

The DFs were powered by an EMD 12-645 engine, the same prime mover chosen for the DC class, but were able to make greater use of that power by having six traction motors and Co-Co arrangement as opposed to the four traction motors and A1A-A1A wheel arrangement of the DCs. This gave the DF several advantages: a tractive effort of and a maximum speed of , compared to the DCs and . The most noticeable visual difference between the DF and the DC is that the DF is considerably longer with the headlight arrangement on the cabs differing: the DC has the lights arranged horizontally, while the DF has them arranged vertically. The DF is more often confused with the DX class, as both are of similar dimensions though the DX also has the horizontal headlight arrangement.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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