QUOTE: Originally posted by tmcc man i do not run mth, and i do not think that ther is a way to have a ps2 engine run on a reversing unit.
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QUOTE: Hi Tom, Good to hear from you. Yes, DCS is polarity sensitive (at least at the moment). If you do not have the train oriented correctly with regard to which rail is the DCS signal rail, they will not operate. The same as if you connected the red terminal from your TIU to the outer rails and the black to the center rail-it does not run. I have extremely limited experience in the DCS two rail area (about 1/2 hours worth). Note that the O gauge 3-2 rail locomotives have a rail polarity switch to help this situation. Either way, reverse loops with two rail DCS are going to be a problem. Rumor has it that a new D/C TIU is under development. I do not know if this is true--it came from the MyLargeScaleForum (seems we have gone full circle). In order to accomplish a reverse loop in two rail, one would probably have to resort to the same sort of relay/polarity switching as with conventional two rail. This is a semi-educated guess on my part. Let me know if any of this helps.
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