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  1. S

    Fine-tuning loco to degrade performance

    Well, that wasn't really my goal, but that's what happened. I put a DCC decoder in an old blue box Athearn GP38-2 loco - no problems there. I then had the bright idea to try and tune up the engine to improve it's performance, especially at lower speeds. Previously (i.e., ~15 y ago) I used this...
  2. S

    adding sound to old Athearn GP38-2

    I have an old (~15 y) Athearn GP38-2 that I would like to upgrade to DCC with sound. One problem is figuring out where I could put the speaker. My first thought was to replace the molded-on radiator fans and/or screens with something see-through and then mount an upward-facing speaker under...