Oh dear, look at what I've gotten myself into now -- I should stay in programming where I belong.
In all seriousness though, thanks a bunch guys, this clears things up quite a bit.
Just to verify my understanding: the term "cantilevered" has come up quite a few times in reference to wheels; that just means that the shaft that the wheel is on isn't supported on the end, right?
My apologies for replying so late; I was out sick from school for almost a whole week and subsequently quite swamped.