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MTH Premier EMD SD-90MAC O-Gauge Diesel Locomotive in True HD 1080p

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Uploaded by on Oct 10, 2010

Here's another blast from the past! This is one of my old Protosound (PS1) diesel locomotives that I haven't run in years and have never before shown on video. It's another from 1999 and is the EMD demonstrator for the SD-90MAC, a 6250 HP very modern diesel that uses AC traction motors. Serious efforts to use AC (alternating current) diesel-electric engines began when General Motors introduced its 4,000-hp SD-60MAC in 1991-92. While the AC power increases an engine's adhesion, allowing it to start far heavier trains than a DC-powered locomotive of the same horsepower, the heavier load prevents AC-powered engines from reaching track speed. To solve that problem, locomotive builders have raced to design and deliver AC engines with ever-larger horsepower. Hence, in 1996, EMD delivered the SD90MAC. In this True HD 1080p video, you can see it running under purely conventional control (using one of my 50+ year old classic ZW transformers). While not up to today's standards, for 11 years old it's not bad at all. Since it's a very modern locomotive, I have it hauling a freight train made up of (mostly) modern intermodal and other freight cars. Please visit my web site -- http://www.toytrains1.com -- for lots more videos and photos of both real and model trains.

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  • Thats a nice looking Big Mac.

  • i think i have the same thing but mine has proto sound 2.0 and proto smoke anyway i was wondering if you can turn the sound down either manualy or with the transformer.

  • nice!!

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