[sdcantrell56]

Ok I will try to answer everyone. First of all I was planning on UHMW for the wheels. Something about having 2 hours of sleep made my brain function...well not function at all actually. Also the center wheels are lowered .175 inches for easy turning. The wheels are 4.5" diameter with roughtop tread. One of the nice things about using uhmw is we can buy enough material for 20 wheels for right around $70 dollars. From what I have heard UHMW makes a very durable wheel. It is stronger in impact situations and easier to attach tread (sheet metal screws). I will post up a picture of the wheel assembly with sprockets later but the entire thing with rim, tread, 2 sprockets, and 3 bearings weighs .5lbs.

Right now the speed is set right at 5fps and 14fps although that can easily be changed by switching the drive sprockets. Needless to say this drivetrain will not be getting pushed around.

Sandrag thanks for the compliments. I'm thinking there will be some type of obstacle next season and I hate big wheels so this is the result.