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Are there are different types of 70MACs? The Alaska Railroad purchased two groups of SD70MAC engines. (See near the bottom of this page for engine and model numbers.) The 40xx-series, purchased new in 2000, have flat (flush with the housing) radiator inlet vents and full computer display screens on the conductor's side. The 43xx-series, purchased new in 2004, have slanted radiator vents (i.e. they come out diagonally from the housing, much like the SD90MAC's) and have only a digital speed display on the conductor's side (actually, a sort of downgrade). They also feature air suspension seats in the cab, although the leather isn't as nice and the seats are not quite as comfortable. Also, the computer fans in the cabs of the newer models are much quieter (the loud computer fans of the 40xx-series are a source of annoyance to many train crews).
I almost thought that the 2004 ones were SD70ACe models (because of the wider radiators and the fact that SD70MACs were discontinued due to EPA regulations), but their noses aren't any more angular than the 40xx-series (as the article says), and the model placard inside the cab still says SD70MAC. I know this is a shot in the dark, but does anyone know if there is a sort of intermediate model between the 70MAC and the 70ACe, or if the 70MAC was ever updated or changed slightly? What model would EMD have been producing in 2004? Just curious. cluth 11:25, 23 May 2006 (UTC)
Not sure who originally suggested that the 70ACe and 70M-2 be split, but I vote against it. The locomotives are very much related, and as long as the title of the article is "EMD SD70 series," I think they should all stay under one article. The resulting article on the 70ACe/M-2 would just be a stub, anyway. The article's organization is fine as is.
If I don't hear any objections in a week or two (or a month--whenever I stumble back across this article), I'll remove the split suggestion from the article, especially since there's no rationale posted here. If more information gets added to the article (specs, etc.) that very clearly differentiate the models and make it worth splitting, we can discuss it again at that point. cluth 09:47, 24 May 2006 (UTC)
I feel they should be split. The SD70M-2 (was to be SD70DCe) and SD70ACe share little in common with their prior non-Teir II compliant 70 series denizens:
Different trucks (HTSC/HTCR4 vs HTCRII) and traction motors (D100 vs D90 for DC, EMD/Mitsubishi A3432 vs EMD/Seimens 1TB2630) Different frames (70ACe and 70M-2 share the same frame, AC and DC 70s use different frames) Different radiator core and fan configuration (similar arrangment first seen on the SD89MAC and Phase II SD90MAC), Different FIRE cab (again, similar cab seen on the SD89MAC and Phase II SD90MACs) Different dynamic brake configuration (first seen on the SD89MAC)
ES44ACs have more in common with AC4400Cws than a SD70ACe has in common with a SD70MAC.
Just my thoughts, Robb Fisher, RFDI
Is this information true? (Regarding the redesigned cab and windows) I have heard it was just a railfan rumor by several sources.
No it is not true. Close examination of the windows will show that there is no way they are interchangeable. GE glass is a parallelogram, EMD glass is square. This also applies to the 'porkchop' or 'teardrop' glass as well.
Robb Fisher RFDI
The image showing the variants used by Union Pacific is a nice feature but really needs to have captions or text telling what these variants are. Ken ( talk) 23:18, 13 April 2019 (UTC)
Tonight, I added 3 pictures of the SD70 varients. The ACe, the M-2 and the standard cab SD70. Please feel free to rearrange them to fit the article better. 3D jonny 02:20, 17 October 2006 (UTC)
I've added as many of the current operating numbers for the SD70 series as I could find. Some of the article now needs slight rearranging, mainly the pictures (and I dont trust myself to get those in the right order at all).
I have added information about the QNS&L SD70ACes: RRPictureArchives.net shows that 502 did not exist because of the order numbers. They have ordered 12 SD70ACes and have a 513. This means that with every other one photographed, 502 is the missing number in the series. Tech Teacher 101 ( talk) 22:15, 3 November 2011 (UTC)
In the body of the article it uses the word examples to describe the number of units (of a particular model). I believe this is bad form, as the examples do not multiply in number, but it is the number of copies that changes.
When a manufacturer of a particular product, (in this case Diesel-Electric Locomotives), makes more than one model, then (IMHO) it is appropriate to describe a photo of one of the models as an example, but when there are 1500 units, such as the SD70MAC, then would it be more appropriate to say "there are 1500 units of model x" than "there were 1500 examples of model x"? Richard416282 ( talk) 22:41, 18 May 2013 (UTC)
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It wasn't a SD70 like this article incorrectly states. And even if we proclaim that Canadian Pacific's GP20C-ECO's are "rebuilds" thanks to their Blomberg trucks and air compressors being reused from GP9 trade-ins, we still have Mauritania's GPL15T's from 2004 with the classic Spartan Cab and Saudi Arabia's SDL50's from 2005 that survived Hurricane Katrina waiting for a ship to pick them up at a dock in New Orleans when the storm struck.
The comment(s) below were originally left at Talk:EMD SD70 series/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
Images are really lacking. Looks like someone just ran around one day and photographed whatever they could find. |
Last edited at 02:53, 22 April 2009 (UTC). Substituted at 13:58, 29 April 2016 (UTC)
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Who can possibly go to Brazil and take a picture of the SD70ACe-BB? If you can do so, please do, beacuse that is the only locomotive of the SD70 series that still needs pictures.-- Davidng913 ( talk) 22:21, 12 November 2017 (UTC)
Should we add the SD70MACe to the article? It's part of a program BNSF is doing to rebuild their SD70MACs. To my knowledge, the upgrades mainly entail a completely new electrical cabinet and Siemens electronics, possibly new prime movers as well. GenesisFan99 ( talk) 19:20, 2 August 2018 (UTC)
Due to the fact that the SD70ACU is merely a rebuild, it was proposed that this page be merged with the page EMD SD70 series. All other pages discussing the rebuilds of the SD70 are also discussed on that page, and because of this page lacking significant sources, it might be best to merge this page with the SD70 page. We primarily have sources for the Canadian Pacific rebuilds, but we are lacking information about the Norfolk Southern rebuilds. If we can't find any sources about the NS rebuilds, I think it's best to move this page to the SD70 main page. Anyone agrees with this? Davidng913 ( talk) 14:34, 7 August 2022 (UTC)
Two users, namely 50.38.27.12 and Ericerie, recently removed CSX as owners of SD70Ms for the following reason: "CSX did not buy NEW SD70M's. They are used. A link needs to be provided to prove that CSX did buy NEW SD70M's. 7000-7024 are used." 50.38.27.12 also says "Look it up here. rrpicturearchives net." This isn't proof of any sort. Can we discuss whether or not to include CSX as an owner/operator of the SD70M? Or are these recent edits indeed correct? Davidng913 ( talk) 21:20, 28 October 2023 (UTC)
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