Improving Low Speed Aristocraft & USA Trains
Posted on 11. December 2009
Users have reported that QSI decoders may exhibit some low speed oscillations when running BEMF on certain locos. These locos are usually high current dual motor or large Pittman motors with "loose" gear-trains. This problem appears as a "chatter" in very slow speed running. In addition, sometimes the loco may surge. This usually occurs at DCC speed steps under 15 of 128.