Faraday Train Kit: a battery with magnets on both ends and a coil of bare copper are the simple essence of this self propelled craft. This inexpensive kit is the best performing that I’ve come across due to the supplied springy copper plated coil which is ideal for this demonstration. The magnets conduct electricity, thus when put in contact with the coil current will flow creating a solenoidal magnetic field in the vicinity of the battery, which in turn pushes on the magnets at each end of the