I received a set of urethane tires and a couple of band saw blades for Christmas.
I installed the tires and a 3/16" 4 tpi skip tooth blade, centering it on the tires.
As I was adjusting the blocks, I turned the wheel and the blade moved forward on the tires, settling about 1/3 of the way from the front of both tires. I was rather surprised, because I knew I had turned the wheel just a few minutes before and the blade had stayed centered.
Paying close attention to the blade this time, I turned the wheel again and the blade moved back to the center of the tire and stayed there. Now I was really confused.
After screwing around a little more I figured out what was happening:
If I turn the wheels *backwards*, the blade moves forward, settling, as I said, about 1/3 of the way from the front of both tires. As soon as I turn the wheels in the right direction, the blade moves back to the center of the tires and stays there.
Does anyone know why this happens? I checked the alignment of the face of the wheels and they appear to be aligned correctly, so I don't think I'm dealing with a tilted wheel.
I have not turned the saw on yet, since I'm still cleaning it and making adjustments, but I'm curious about why the blade would do that and if I should be concerned.
Thanks!