This is the link to our final robot reveal video.
http://www.youtube.com/watch?v=zVYryv8kyxg
We are using;
-A catapult to throw the ball
-4 vex 2 stage transmissions
-4 cim drive train
-6" Mecanem wheels and 6" traction wheels
-An arm with wheels on the end to suck the ball into the robot
Feel free to ask any questions.