When I built my previous layout, it was before I had adopted DCC. I wired the track on my [non-motorized] turntable with a DPDT switch to flip the polarity, since I knew I’d have to do this in a straight DC environment. Do I still need to do that on my new layout if I’m running DCC, since the signal is AC and any decoder already “knows” which way is forward/reverse?
TIA…
You will need to flip the polarity - The A & B rails still need to be flipped even though it is AC. Get a DCC auto reverse unit to handle it. What kind of TT, and is it wired for ring rail or slip rings on teh center shaft?
Jim
It’s a Walthers 90-footer, the older type that had to be assembled. It uses center shaft slip rings.
I found the original DPDT switch that I used before, I just re-hooked up that one. I’ll keep your idea in mind [to get the DCC auto reverser], if I find the TT gets more use than I originally planned. My mrr budget is a bit tight these days…
Thanks for the reply!
I have the walthers 90ft. table. I have a Digi-trax AR-1 auto reverse unit. It is not very much money
and works great. Easy 4 wire hookup. An MRC 2400 power pack is used for turning the table. It gives me good control for aligning tracks.