EMD SD70ACe series official thread (covers all variations)

Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

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Re: EMD SD70ACe series official thread (covers all variation

Postby .Taurus. » Fri Sep 28, 2012 11:02 am

SD 70 ACe-P4
or
GP 70 ACe

Does SD refers to a truck with 3 axles generally (C'C' Co'Co' A1A'A1A' Bo1'Bo1') or to a truck with 3 driven axles ?? :)

*wink*
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Re: EMD SD70ACe series official thread (covers all variation

Postby Tadman » Mon Oct 29, 2012 3:20 pm

You bring up a good question. The answer is, who knows? EMD is known for really arcane nomenclature. The biggest examples:

-What is the diff between "General Purpose" and "Special Duty"? Especially now that no "general purpose" units are built and everything is "special duty", which means it's the definition of "general purpose".

-What does the "70" mean in SD70? It's not the horsepower. Back in the 60's, GM's marketing machine decided to let the model number grow faster than the horsepower, but nobody was fooled. Railroads don't buy locomotives like suburbanites buy cars.

The list goes on and on, but I quit trying to make much sense of it long ago.
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Re: EMD SD70ACe series official thread (covers all variation

Postby CN9634 » Sun Nov 18, 2012 7:17 pm

EMD SD80ACe. Caption says Sd70ACe but I believe by the radiator section it to be an SD80ACe

http://www.rrpicturearchives.net/showPi ... id=3241460
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Re: EMD SD70ACe series official thread (covers all variation

Postby MEC407 » Sun Nov 18, 2012 7:51 pm

Correct. Three radiator fans vs. two, and 10 power assembly access doors vs. 8.
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Re: EMD SD70ACe series official thread (covers all variation

Postby MEC407 » Sun Nov 18, 2012 7:54 pm

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Re: EMD SD70ACe series official thread (covers all variation

Postby ACeInTheHole » Sun Jun 09, 2013 7:12 pm

Is BNSF looking to order more ACes this year?
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Re: EMD SD70ACe series official thread (covers all variation

Postby prakash » Mon Jun 24, 2013 3:07 pm

GT46PAC in India was a failure. She has a lot of wheel slippage issues.

Indian Railway (IR) is now converting them to GT46MAC's passenger version, i.e. 6-motors with gear ratio to suit passenger traffic. All locos built new in factory during the last two years have 6 TMs.

IR has also developed inerters and software locally. They have a bank of six inverters for freight and passenger locos (based on original GT46MAC design).

All these locos deliver 4,500 HP.
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Re: EMD SD70ACe series official thread (covers all variation

Postby Fan Railer » Wed Oct 30, 2013 5:54 pm

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EMD's SD70ACe dynamic braking resistors

Postby kenlap » Tue Jun 02, 2015 11:00 am

Has anyone heard of trouble (over heating) with EMD's SD70ACe dynamic braking resistors during the rail? I have heard some rumors of this but wanted to bring it to the Forum to learn more/confirm.
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Re: EMD's SD70ACe dynamic braking resistors

Postby mtuandrew » Tue Jun 02, 2015 11:51 am

Moderator's Note: Moved to the EMD forum.
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EMD's Prototype SD70ACe Tier 4 moving

Postby JayBee » Wed Sep 16, 2015 9:55 am

EMD's prototype Tier 4 locomotive is moving to the RSIA show in Minneapolis via NS from Muncie to Chicago, then BNSF to Minneapolis. A photograph of the tarped locomotive has appeared on Trainorders.
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Re: EMD SD70ACe series official thread (covers all variation

Postby MEC407 » Sun Oct 04, 2015 12:03 pm

Progress Rail has released a short video showcasing the new SD70ACe Tier 4 prototype, which features the 12-cylinder 1010 engine (redesigned 265H) as well as a redesigned cab:

https://www.youtube.com/watch?v=w9w7Ac1Cnsw
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Re: EMD SD70ACe series official thread (covers all variation

Postby Fan Railer » Sun Oct 04, 2015 12:24 pm

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Re: EMD's Prototype SD70ACe Tier 4 moving

Postby JayBee » Sun Oct 04, 2015 7:39 pm

Cat-EMD has released a video showing the new locomotive;

https://www.youtube.com/watch?v=w9w7Ac1 ... ogressRail

Also they have released official photographs of the locomotive. Plus of course now that the locomotive has been shown to the to the Industry there are unofficial photographs as well out there.
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Re: EMD SD70ACe series official thread (covers all variation

Postby pjw1967 » Tue Oct 13, 2015 9:40 am

Article about SD70ACe-T4 including video.

http://www.railwayage.com/index.php/tra ... Itemid=502
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