My team has been working hard this off-season to create a new chassis design in CAD that will be lighter, easier to assemble, and easier to maintenance than our previous design. This design is suitable for teams that have access to CNC routers. For those interested please check out
for the CAD files (you’ll need Inventor 2015, it’s available of Autodesk’s website for free for students and educators).
Perhaps posting a picture would get more peoples’ attention. I don’t have Inventor so I can’t view it. 
Why Github over GrabCAD? The latter automatically ignores temporary files and the like, plus has an online viewer and app.