Cool. Thanks. I guess that would be extremely inexpensive too. I realized, however, that when I would turn on the side that the chain ring would be on, the chain would probably catch the ground, resulting in a very painful experience, unless I made arms that attach to the rotating part of the wheel and put a smaller chain ring on the arms.
Are there any other alternatives to a hubless drivetrain?
**EDIT** Where can I find a chain ring
as big as this guy's, but without the stuff inside of it. I want just the toothed rim of the ring.