[dirtbikerxz]

Do not use omni wheels. We used Omni wheels last year, (and while the center wheel didnt get busted (we had it on pneumatics that retracted the center wheel when needed), you will have no traction at all. I couldn't even drive onto a step last year, unless I was driving head on, because it would just slip to the side, (and we were using 4 inch omnis). so there is literally no way it will work with rough terrain, (although if you have big enought wheels, like 8 inch, and go fast enough, you might be able to go over the rock wall). But trust me, there is almost no point of omnis, if a bot rams you from the side you'll just keep rolling and get pinned, because you won't have any traction. And unlike last year, you don't really have to allign yourself in a certain way to pick up the ball (where as last year, most teams could only pick up totes from the front, do it was easier to manuever around).