6 wheel drive with chain tensioners and shifting

[Edoc'sil]

I did run it through a stress analysis already, it crumpled like a wet rag. ( I don't really know what I'm doing in the stress analysis, I will give the tutorials another shot tonight however) A large portion of the strength comes from the flexmation attached to the sides and I do not have the skill to run a compound system like that. I anyone else knows how I would be happy to post the cad files. They are for Inventor 2010.

With the flexmation tubing I will look into it, but flexmation is one of our primary sponsors, we build build most of our bot out of the stuff because they give us anything we need for free.

What do people shoot for for chassis weight? 30 to 40 lbs?