Video of our robot at GLR can be found here:
http://www.freebmw.net/don/FIRST_Sponsor.wmv
It's a big file... 52 Megs...
You can see that with the casters down, we are very manueverable and quick. When the casters are up, we have good power and are hard to push.
A good example is when near the end of the match, we get into position and put our casters up (watch the wood floor in our ball pick-up area), but then back down to get into better position, but 894 starts to push us. We decided to see if we could make shots while begin pushed, so we leave them down... After we escape and get back into position, and raise the casters, they can't move us very well and we make the rest of our shots.