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This announcement came out of the blue. SD45 is one of my favorites so I'm looking forward to seeing these. I hope these are actually using ESU.Looks like I'll wait to see the SP rebuilt versions with 7400-7566 serieshttp://espee.railfan.net/spsd45r.htmlThe SD40M-2 Morris-Knudsen rebuilds with speed lettering (not all use the SD45 carbody in the 8574-8706 series).http://espee.railfan.net/spsd40m-2.html
What was wrong with the SD50/60 mechanism? Seems like a pretty good one to me. I don't have a C628/630 though, so I can't comment on that one.
Been so long since I ran an SD50/60 I can't recall specifics, but I do remember being incredibly disappointed with them. I recall truck issues and loud motors out of the box. The C628/630 is fresher in my memory... they didn't run out of the box. Had to coax them to move and they were erratic and stalled a lot but got better once they warmed up. Stopped for even five minute and you were back to square one. I remember being told that they were over oiled. IMO when you buy a locomotive it should run. The odd defect is to be expected (though still waiting for a bad Kato), but virtually every locomotive and over several runs... that's just a POS. Pretty sure they were aware because I wasn't the only one complaining on the Atlas forum.I concluded they weren't interested in fixing them. That's not good.
Since this is an all new loco with a new mechanism, I wonder if it will have a more scale width hood. The Kato locos were a bit fat because the motor was totally enclosed in the frame.
The C628/630's couldn't hardly pull themselves either.
And I'll also be patiently waiting for a future SD40, because they'd be stupid not to.