Indian locomotive class NDM-1

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NDM-1 is a class of Narrow Gauge Diesel locomotives built for Indian State Railways in 1956. They are B-B Diesel Hydraulic locomotives.

The only difference between the NDM-1 class and the ZDM-1 is the gauge. NDM-1s are 2ft gauge, the ZDM-1s are 2ft 6inch gauge. Conversion between gauges (and thus Classes) is possible and has been carried out on three locomotives.

Each locomotive consists of three sections, Two identical 4 wheeled power units with a cab suspended between the two. They are articulated in the same way as the Swiss electric locomotives (a design also used in India) known as a Crocodile.

Technical specifications[1]

Builders Jung
Engine (Two engines) MWM TRHS 518S, 145/128hp
Transmission Twin Voith hydraulic

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