[Cory]

Matt, you are right, we tested our robot out last night, using a piston to lift up the front of the robot. The one we used only got us to about the midpoint of our wheels, but since we had so much torque, we were able to drive right up. If you do it all in one continuous motion, and you have enough torque, you actually wont high center the frame. If you stop midway, however, youre stuck.

I believe the reason I heard the 2/3's thing was so that you could know exactly how large of a wheel would get you over, no questions asked. I very likely am wrong though.

Cory