[messer5740]

I suggest that if you are redesigning a robot in the offseason to complete the same challenges that Stronghold had such as the moat, I would consider using the AM14U3 from andymark with the Upgrade Kit 6WD with 8" Pneumatic Wheels. This will give you suspension and a bit of bounce when going over obstacles. Just note, this drive base CANNOT go over obstacles without in house customization. Our team noticed that at the competition our robot could not cross any defenses other than the rough terrain. We used an angle grinder to cut off about an inch off of the bottom of the front of our chassis and made an angle so that when we would hit an obstacle it would pop our bot up onto the moat, ramparts, rock wall, or rough terrain, which would allow our wheels to get on top of the defense and drive over with ease. We had only gotten stuck in the moat only one match and that was when our path was obstructed with a boulder. I also suggest adding support in the middle of any chassis to ensure the sides do not cave in (just a precaution)
Hope this helps!