I'm working on a large scale robot that will use tracks. I'm making the robot's tracks out of 3 inch wide, 27 inch long strips of car floor pads and stapling the ends together with heavy-duty staplers (I might have to make them a little longer than 27 inches. I might also use some find sewing if Staples don't work). I hear this technique is suppose to work really well. My only problem now is finding the right wheel/pulley to turn these treads. I've thought of using 3 inch long spools of some kind with an outer diameter of about 2 or three inches, but I can't seem to find one exactly like that. Anyone have any other ideas?
Also, I'm currently discussing industrial timing belts and pulleys as treads with Brecoflex over email, but I'd still like to know if I can find a way to use these floor pad strips so I don't have to spend a few hundred dollars on industrial stuff.