[OCCRA]: Belt material and wheel modification

[JBotAlan]

Hello,

We need a rules clarification: we would like to modify our wheels by gluing a more "grippy" material to the outside of them. In the Additional Materials list, we are allowed specifically to use sheet rubber; I would like to use wedge-top incline conveyor belt. While this could loosely be considered "sheet rubber" (it's in a sheet, and it's rubber, mostly) I want to be safe. Also, there are no apparent rules about what wheels can be made of, or for that matter what the definition of a wheel is (I know, don't lawyer...) So, is incline conveyor belt material, such as that on page 1189 of the McMaster-Carr online catalog allowed on our robot? Where do you draw the line between sheet rubber and not allowed?

Thanks,
Jacob Rau, OCCRA 43 (Holly Robotics)

EDIT: Are similar products, such as no-slip rug backing, allowed per the "sheet rubber" rule?