[techedguy]

In defining 'good' in relation to our use, this was done in "Breakaway" We didn't want the first contact point with the angled transistion to be the stamped sheet metal plate of the COTS mechanum wheels (and since one of our sponsors was willing to machine on their 5 axis that year) we built wheels similar to the Jester Drive system we'd read about.

We had also seen used COTS mechanums with chewed up rubber on the rollers from wear and believed we could make a more durable roller through casting those ourselves.