After some consideration, we narrowed down our drive system options to 3 different ways our robot could climb the mountain.
Our first idea was a simple four wheel tank with treads attached to its side. This would be combined with a linear slide that would hook on to the highest or second highest bar, assisting the climb.
Our second idea was based off the first, except the robot could come off its wheels. In other words, the body of the robot could remain horizontal to the ground while the wheels tilted to drive up the ramp.
Our third idea was a stair climber. In this design the drive is a simple tank drive. What allows the robot to scale the mountain are two hooks that go in a circular motion in front of the wheels. They hook onto each bar and lift the robot over them.
We are now prototyping our designs and drawing them up in Creo.