[Al Skierkiewicz]

There seems to be a lot of mis-communication and conjecture in this thread. I would suggest you simply build the kit bot using the wheels that came in the KOP and make a determination from that experiment/prototype. Each type of drive carries it's own set of pros and cons and risks for this game. Tank treads will climb but can cause excessive (near stall) current in turns if not implemented properly. Crab drive can be hard to control and requires a ton of practice to get it right. Drive systems that have a low COG on the floor may not have the same stability when crossing the bump. Prototype and then let the team decide which drive seems to work for the strategy and brainstorming you have (should have) done.