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Reply to "Christmas 2020 Layout : Fastrack (was RealTrax), RTR Polar Express, max. grade, min. radius, SCARM = HELP!"

Dang phone - my long reply disappeared. 

Good points in the other thread. 

Grade changes need a gentle lead in.  Any time you can get some straight track at the bottom of a grade it helps.

Split the power feed for uphill and downhill sections.  Use separate power supplies so you can manipulate the voltage.   The old school solution is to use a rheostat. That way you just use one power supply but can reduce the voltage on the downhill run.  Both methods work.

 

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