We’re restoring and operating five historic Diesel-Electric Locomotives, two are the only survivors of their classes.
All our locomotives are known as Diesel-Electric. In this type of locomotive, the diesel engine drives a generator, producing electric current. This current is then supplied to electric motors mounted on the axles. These motors are geared to the axles and provide the driving power.
This is in contrast to a car or truck, which use a gearbox and drive shafts to supply the wheels. The main reason for the use of electrical transmission is to provide a flexible drive that can negotiate tight curves, and to allow the drive to supply several sets of wheels without being excessively heavy.
Here in New Zealand, English Electric was a critical part of mid-20th century rail transport and machinery. From planes to power plants and even ships, English Electric helped keep the country moving.
Today, many English Electric locomotives and units remain in various conditions with heritage rail operators around the country and DTG is proud to host the country’s largest collection.

Built to add to the nation's dieselisation efforts, the DG class were the first English Electrics to work extensively throughout the South Island and 772 was first to join DTG. Operating on heritage excursions throughout the 1980s, from 1995 to 2009 it sat in storage until being restored and pairs well with DI 1102 when in use. Our goal is for it to be back on the National Network very soon.
An evolutionary dead end of sorts, the DI class were a prototype for a lightweight class of Diesel-Electrics that could run on main and branch lines in the South Island. Before this could happen the DJ class was selected for this role and only five DI locos were built with 1102 as the only survivor today. Since joining DTG the loco has been restored not only to operation but is the only English Electric locomotive in New Zealand operating on the National Network following restoration with our group.
DE locomotives were a class of heavy shunters that proved themselves capable to fill in for other roles and could be seen during their time pulling heavy loads and even the Royal Train in 1953. Since we acquired 511 and 512, they’ve been integral to continue that versatility and whether its pulling work trains at Weka Pass or a shunt at Ferrymead, they’re still great locos when you need something done.

The DF Class were the first Diesel-Electric locomotives built for mainline operations in New Zealand with 1501 as class leader. They would be quickly superseded by other locomotives, their arrival marked a revolution in motive power for the nation. While they had a short operational life, our long term goal is for this historically important loco to be back running.
Become a volunteer or donate today to help bring living rail history to communities across the South Island.
Location
Ferrymead Heritage Part, Christchurch, New ZealandReach Us
secretary@dtg.co.nz© 2025 Diesel Traction Group Inc [CC21966]