[EricH]

Originally Posted by Maxpower57

also, where is the best place to buy quality mecanum wheels?

There are two places to get mecanum wheels small enough for FIRST use. 1: Make your own. 2: Buy from AndyMark.

Con #1: they need a lot of overhead weight (4 wheels, 4 trannies, 4 motors).
Con #2: You have to get the CG right or handling will suffer. Suspensions may be useful.

Pro #1: Lots of maneuverability.
Pro #2: You don't need a special frame, so if they don't work, just switch to a 4WD or 6WD. You can even leave the trannies in place.
Pro #3: Cool factor.

Other things--you don't get as much of a "push" factor. You need to avoid shoving matches.