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New Zealand DB class locomotive
The New Zealand DB class and DBR class locomotive is a type of diesel-electric locomotive built for service on New Zealand's rail network. They were built by General Motors Diesel (GMD) of Canada as a narrow-gauge version of the EMD G8 model, with seventeen locomotives constructed. Ten of these were later rebuilt into the DBR class, of which 4 which are still in service today.
== Introduction ==
The DB class was introduced to the rail network in 1965-66 as a result of a requirement for a modern locomotive that could operate on the North Island lines that the DA class was excluded from due to their weight and axle load. While these were mainly branch lines, it also applied to the East Coast Main Trunk line, particularly the section beyond Paeroa through the Karangahake and Athenree gorges, until the opening of the Kaimai Tunnel in 1978.
The class was virtually indistinguishable externally from the DA class, being of the same basic design and dimensions, and wearing the same livery. They were some 13 tonnes lighter with a V8 prime as opposed to a V12, though they shared the same A1A-A1A wheel configuration and traction motors for commonality with the DA fleet.
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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