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The GT42CU ACe is a model of diesel electric locomotives manufactured by EDi Rail, Maryborough between 2007 and 2013 under licence from Electro-Motive Diesel, for use on narrow gauge railways in Queensland, South Australia and Western Australia.
The GT42CU ACe is an evolution of the GT42CU AC being fitted with a different computer system and traction motors. [1]
In 2006, Queensland Rail placed an initial order for 15, with a further orders increasing the number to 75. These were designated as the 4100 class. [2] Following Queensland Rail purchasing Australian Railroad Group in June 2006, 19 were transferred to Western Australia and reclassified as the ACN class, but retain their original numbers. [3]
The Queensland based units are primarily used on the Blackwater, Moura and Newlands coal networks, and on phosphate trains between Mount Isa and Townsville. The Western Australian-based units are primarily engaged hauling iron ore trains. All were included in the transfer of Queensland Rail's freight business to QR National in July 2010.
Pacific National placed an order for 13 units for coal haulage on the Blackwater system that later grew to 46. These were designated as the 83 class. [4]
In July 2012, One Rail Australia placed an order for five for use in South Australia. [5] Designated the GWN class, they operated on the Arrium iron ore railway to Whyalla Steelworks. [6] [7] They were transferred to Queensland after being displaced by 5 Queensland Railways 2250 class locomotives returning to Australia from South Africa.
A further six were built as a speculative order for Locomotive Demand Power as the LDP class. [8] One was painted in Pacific National livery and numbered 8347 in anticipation of a lease that failed to eventuate, the others were numbered LDP016-LDP020 with all six placed in store in Maryborough. All were included in the sale of Downer Rail's locomotive business to Progress Rail Services and in December 2017, were moved to Redbank Railway Workshops entering service as 8347–8352 with Pacific National in April and May 2018. [9] [10]
 | This section needs additional citations for verification .(August 2023) |
| Operator | Class | Number in class | Road numbers | Built | Notes |
| Aurizon | 4100 | 54 | 4101–4140, 4153–4167 | 2007–2011 | Used in Queensland |
| ACN | 21 | ACN4141–ACN4152, ACN4168–ACN4175 | 2011–2012 | Used in Western Australia | |
| East Coast Rail | GWN | 5 | GWN001–GWN005 | 2012 | Transferred to QLD during 2019–2020 for Coal workings |
| Pacific National | 83 | 52 | 8301–8352 | 2008–2013 | 8347–8352 built as speculative order in 2013, entered service with Pacific National 2018 |
Downer Rail is a business unit within the Downer Group. As well as manufacturing and maintaining railway rolling stock it holds maintenance contracts to maintain rail infrastructure. The head office is located in North Ryde.
The 90 class are a class of heavy haul diesel-electric locomotives built by Electro-Motive Division, Canada for FreightCorp and EDi Rail, Cardiff for Pacific National for use on high tonnage Hunter Valley coal workings.
The 422 class are a class of diesel locomotives built by Clyde Engineering, Granville for the Department of Railways New South Wales in 1969/70.
The G26 is a diesel-electric locomotive built in the US by General Motors Electro-Motive Diesel for export and in Australia by Clyde Engineering under licence. The G26 was developed to increase traction capacities on the tracks which supported lesser axle loadings. They were intended for main line freight and passenger traffic.
Walkers Limited was an Australian engineering company, based in Maryborough, Queensland. It built ships and railway locomotives. The Walkers factory still produces railway locomotives and rolling stock as part of Downer Rail.
The Interurban multiple units (IMU) are a class of electric multiple units manufactured by Walkers Limited/Downer EDI Rail, Maryborough for Queensland Rail's Citytrain division between 1996 and 2011. The IMU is divided into in three subclasses, units 101-110 as the 100 series, units 121-124 as the 120 series, and units 161-188, as the 160 series.
The GT46C is a model of diesel-electric locomotive designed and built by Clyde Engineering using Electro-Motive Diesel components. A number of Australian rail freight operators purchased them from 1997: Westrail as the Q class, FreightLink as the FQ class, and Freight Australia as the single-locomotive V class. As of 2022, all 24 locomotives were owned by Aurizon following its purchase of certain One Rail Australia assets in July 2022.
The GT46C-ACe is a model of Australian diesel-electric locomotive designed and built between 2007-present by Downer Rail at its Cardiff Locomotive Workshops using Electro-Motive Diesel components, and subsequently built in the United States.
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The GT42CU AC is a model of diesel electric locomotives manufactured by EDi Rail, Maryborough between 1999 and 2005 under licence from Electro-Motive Diesel, for use on narrow gauge railways in Queensland.
Aurizon electric locomotives are used by Australian rail operator Aurizon in Queensland.
The Mount Newman railway, owned and operated by BHP, is a private rail network in the Pilbara region of Western Australia built to carry iron ore. It is one of two railway lines BHP operates in the Pilbara, the other being the Goldsworthy railway.
The DH class is a class of diesel-hydraulic locomotives built by Walkers Limited, Maryborough for Queensland Railways between 1966 and 1974.
The 3500/3600 class are a class of electric locomotives built by Walkers Limited, Maryborough and ASEA for Queensland Rail between 1986 and 1988.
The 3900 class are a class of electric locomotives built by Walkers Limited, Maryborough for Queensland Rail between 1988 and 1990.
The Queensland Railways 2170 class is an Australian diesel-electric locomotive.
The 2370 class were a class of diesel locomotive built in 1975 by English Electric, Rocklea for Queensland Railways in Australia. All were later sold to AN Tasrail.
The 2250 class are a class of diesel locomotives rebuilt by Queensland Rail's Redbank Railway Workshops in 2004.