esu sd40-2

  1. W

    Scale Trains HO 54615 Non sound decoder trouble

    Just seeing if anyone out here has had some experience installing/programming the recommended esu decoder in a HO scale trains SD40-2? The tech guy at Scale Trains told me the recommended decoder was the esu 54615. I have been able to program an address and consist address and I can get the...
  2. W

    Intermountain HO SD40-2 help

    I have acquired some of the recent Intermountain HO SD40-2's with the ESU sound decoders. When I have them in consist running as a pair or trio they seem to surge which in turn creates an accordion effect in the train. It does it a lot at slower speeds and I don't notice it as much at higher...