[pfreivald]

We used a lazy susan for our 2009 shooter as well -- we rounded a very large ring out of a piece of plywood and then Gorilla glued a timing belt to the outside to turn it into a giant sprocket, then drove it with a timing belt sprocket attached to a globe motor.

It worked *great*, with about 340 degrees of movement before we ran into the edges of the belt -- but that's where we had our limit switches anyway!

An encoder was mounted to the assembly, but we didn't end up using it.