I've spent quite a bit of time on the mechanical design on this robot, maybe more then was strictly necessary since I used this opportunity to learn SolidWorks, and since all the parts are laser cut, absolutely everything must be modeled.
All the body pieces are laser-cut, excluding the obvious bolts, threaded rods, and electrical parts.
The pictures you see here are from the assembly of the 3rd prototype and so far I'm pleased with how it’s turned out. I've successfully driven it around on my coffee table, but very little electrical work has been done on it yet other then a closed-loop test script.
I’m planning to publishing the plans open-source style as soon as I’m happy with everything. there’s also the possibility of a kit in the works.
Videos and more details soon, so stay tuned here and on 4volt.com/blog.
Update: Now with video! http://vimeo.com/4221721
I can't seem to embed my vimeo video for some reason, sorry!
If you are intrested in the source files to cut your own copy, see 4volt.com/projects/jansen/