Omni drive

[Lil' Lavery]

Originally Posted by hill

And I know just from watching, and the fact that they are only on omni wheels makes them easy to push around.

I beg to differ, greatly. As I mentioned, I drove a bot, driven solely by omni-wheels, and we were not easily pushed around. In fact, on more than one occasion we actually played defense by intercepting an offensive bot before it reached the goal. We weren't able to move them, but they weren't able to move us either.
Static friction isn't affected by the amount of contact you have, and with most roller shapes, the angle you're rollers are pointing. Or tractive force was only limited by what material we put on the wheels. Early iterations had slick, hard plastic rollers, but the final version had softer white neoprene rollers that had coefficients of friction competitive to those in traction wheels.