My VL Hudson stopped on one section of Fastrack. I checked the voltage all around the loop and it was pretty constant with 15-16 volts ( there are 7 lighted passenger cars ). After moving the Engine up the track (about 2 feet) it started again. As the train moved I saw sparks from a 1 3/4 inch section of track to the wheels. This piece was replaced and all is well.
What caused the sparks? The piece looked OK , no rust ,etc.
Thanks
Brent