pic: 6-sided tank drive

[mrnoble]

My students have spent a chunk of their summer designing a hex chassis 8WD because of this very problem; we saw lots of t-bones, and we contributed to a fair number of them. We finished 3D printing the narrow/wide wheels this evening. I've been researching new bumper materials, and the mixing of materials for maximum benefit whether defending or trying to avoid pins. Great stuff!