On 467 we used a unibody design this season that used the skin to support the internal components without a frame. it worked pretty well as it was light weight and durable. It took the force of being flipped twice at the Connecticut
regional without any dents or damage, our bot was so light that we had to bolt
a 14.1 pound steel plate to the bottom to stabilize it.
Frame, pre-construction:
http://www.team467.org/gallery/main...._itemId=512177
Final Bot:
http://www.team467.org/gallery/main...._itemId=512365