[EricH]

Originally Posted by Andrew Schuetze

My question for those experienced with mecanum set ups is can they be used on a rectangular base? I don't see an issue with motion in the X & Y directions and maybe the diagonals might be a bit off, but what happens to a zero degree spin in such a situation??

Yes. Many teams use them on rectangular, at least that I've seen. X/Y motion, no problem; diagonal, you might want to tweak the angle of the rollers, but standard will work, zero degree spin I don't know about. You could do it, but you might get the four-wheel bounce or a really smooth turn, depending which way the rollers are lined up. You might want to buld a base and test it to make sure you get everything roughly down before you build the real thing.