EMD SD70 series - Wikipedia
WEBThe SD70MACe is a rebuilt SD70MAC locomotive with new Mitsubishi electronics and traction motors to replace the Siemens traction motors, first rebuilt for the BNSF Railway, [57] and later rebuilt for CSX (classified as SD70AC) and KCS.
EMD SD70MAC diesel locomotive profile - Trains
WEBApr 25, 2021 · EMD’s SD70MAC was the first production alternating-current traction locomotive to be delivered to a customer when Burlington Northern accepted the first of hundreds of SD70MACs in December 1993.
The evolution of EMD's SD70-series locomotives - Trains
WEBFeb 20, 2024 · EMD’s SD70-series is the longest-running locomotive series in railroading, spanning over three decades. There have been nine domestic new-build models. There are also many more export and remanufactured models that use the “70-series” designation.
EMD's 70 Series: "SD70," "SD70MAC, and "SD70M-2" - American-Rails.com
WEBAug 27, 2024 · SD70MAC. Across the industry the most successful SD70 has been the SD70MAC. The MAC carries the same wide-cab design as the SD70M except that it also features AC (alternating current) traction motors. Different from the traditional DC (direct current) traction motors AC is much more simple, reliable and easier to …
SD70/70M/70I/70MAC - RailroadfanWiki
WEBDec 24, 2011 · The Electromotive Division SD70M is a 6 axle, 4,000 HP diesel-electric locomotive built by EMD (by this time EMD was now manufacturing 100% of it's locomotives at the London, ON plant) from 1992 to 2004.
Alaska Railroad’s SD70MACs - Trains
WEBSep 19, 2023 · In the SD70MAC, the 500-mile-long state-owned railroad found a perfect match for its needs. The alternating current traction motors tame the railroad’s grades and its innovative HTC-R trucks glide around the line’s many tight curves. And, yes, SD70MACs make fine passenger engines.
The Ultimate Guide To EMD SD70 Series Locomotives
WEBThe EMD SD70 series is a six-axle locomotive that features a powerful 16-cylinder diesel engine, which generates up to 4,300 horsepower. The locomotive also features state-of-the-art electronics and control systems, which allow for …
WEBApril 12. 2023. The Alaska Railroad (ARRC) owns 28 SD70MAC locomotives, which make up more than half of ARRC’s 51-unit locomotive fleet. “SD” refers to Special Duty and “MAC” translates to “M” for Modified cab and “AC” for Alternating Current traction motors.
EMD SD70 SERIES - Trains and Railroads
WEBThe SD70MACe is a rebuilt SD70MAC locomotive with new Mitsubishi electronics and traction motors to replace the Siemens traction motors, first rebuilt for the BNSF Railway, and later rebuilt for CSX (classified as SD70AC) and KCS.
The Alaska Railroad SD70MAC-HEP, The Summer ... - Vintage …
WEBNov 18, 2021 · This paper will describe a clever adaptation of an AC freight locomotive into a dual-service passenger/freight locomotive – the SD70MAC-HEP. It was a project driven (like many projects are) by an aggressive delivery schedule and design requirements.
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