[Swampdude]

A couple other things to consider is the amount your bot will sink into the carpet. Also the flex in the frame if it sags end to end. Last year I designed in a 1/4" but then got the bannana welding effect and it ended up being more like 1/2". Which actually turned out to be the magic number. I would say 1/4" is on the short side and a 1/2" max. Extra teeter is not a bad thing, but no teeter is a very bad thing.