EMD SD70 series - Wikipedia
The 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
Apr 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.
EMD's 70 Series: "SD70," "SD70MAC, and "SD70M-2" - American-Rails.com
Aug 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 maintain albeit it costs far more.
Alaska Railroad’s SD70MACs - Trains
Sep 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.
Locomotive profile: EMD SD70 series locomotives - Trains
Mar 16, 2020 · The original SD70, SD70M, SD70I and SD70MAC models were all 4000 hp. As these were all variations on the same basic 4000 hp version of the EMD 710 prime mover, it’s perfectly logical that they’re all identified as SD70s.
SD70MAC Technical Information | Conrail Photo Archive
Surviving SD70MACs. EMD SD70MAC. MORE ››. GeneralBuilt in 1998, Order Number 976825 Weight- 415,000lbs Engine Model- 710G3B Cylinder Arrangement- V-16 2 Cycle RPM Idle- 200 Low Idle- 200 Throttle 8- 900 Overspeed- 990-1045 Spark Arrestor- Turbo Main Generator- AR20 Auxiliary Generator- DELCO 18kW AC Auxiliary Alternator- CA7 Traction Motors ...
SD70/70M/70I/70MAC - RailroadfanWiki
Dec 24, 2011 · The Electromotive Division SD70MAC is the AC traction version of the SD70M, built from 1994 to 2004. Like the SD70M, it uses a 16 cylinder 710 engine to produce 4,000 HP. Based on the pioneering AC technology first used in the SD60MAC, the SD70MAC improved upon and perfected the art of AC traction.
The Alaska Railroad SD70MAC-HEP, The Summer ... - Vintage …
Nov 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.
EMD SD70MAC - alaskarails.org
Jan 2, 2021 · The SD70MAC was produced by EMD from 1993 to 2004 (with an exception) using a 16cyl 710 producing 4,000hp with later models producing 4,300hp. There are many variant of the SD70 aside from the MAC, but since the ARR only …
EMD SD70 Diesel-Electric Locomotive - Railroad Junction
Jan 17, 2024 · Under the UIC configuration standard, the locomotive carries a Co'Co' wheel arrangement. Maximum rated speed reaches 70 miles-per-hour (110kmh) - though the SD70ZCe-T4 increases slightly to 75mph (121kmh). The SD70 was produced from 1992 until 1994 followed by the SD70M from 1992 until 2004.