The majority of SD70MAC models were produced with the 4,000 horsepower (3,000 kW) EMD 710 prime mover while later units are rated at 4,300 horsepower (3,200 kW) and feature EMD SD45-style flared radiators.

Dec 16, 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.

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.

One of supposedly 30 Wells Fargo former BNSF SD70MAC's being leased to Norfolk Southern appeared in Elkhart today. WFRX 8915 trailed on a westbound led by NS 2762 this afternoon and then left tonight eastbound behind NS 9834. Many, if not all of these SD70MAC's, were stored at Etter, TX, and nu.

The EMD (Electro-Motive Division of General Motors), SD70MAC is a six-axle, 4,000-4,300 horsepower diesel-electric locomotive built from 1993 to 2004. Over 1,100 were built, with 15 built specially for Conrail and over 350 built for the Burlington Northern (with orders continued into the BNSF merger with another 800 or so units ordered later on).

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.

NS SD70M with the phase 2 cab design. Photo: Hunter Williams. The SD70MAC was the first EMD locomotive to feature AC traction motors. This locomotive was EMDs response to GE’s AC4400CW locomotive. Many railroads were switching to AC motors because of their increased efficiency and reliability.

They have SD80macs which they got from Conrail (NS then opted for SD70 Spartan Cab while CSX took SD70macs). The unit you got in the lead is an SD70M which one of the distinguishing features is its older style wide nose.

NS #1801 Legacy SD70MAC, Yellow Nose $ 599.00 One of the first successful AC traction motor-equipped locomotives, railroads nationwide purchased large numbers of the SD70MAC.

Designed to be a solid locomotive to upgrade the Burlington Northern fleet, the SD70MAC has its origins in the SD60MAC design demonstrated on the BN. At this time, the SD70MAC, in all of its versions, has been operated by six different railroads in a total of eight different paint schemes.