[IanW]

Lemiant:
The metal probably weighs 12 lbs if you include the gearbox flanges. I chose to use #25 chain because it's smaller, is entirely capable of handling the loads, and because I believe that we could get the alignment right for it to work. Also, I get the look using the PhotoView 360 software that came with my SolidWorks license. It's really easy - just set the material you want for the aluminum, add any textures (ex black for the CIMs), throw it in the program, and go. Just have a hefty computer - it takes about an hour to render on my 2.4 ghz quad core.

Roy:
The cutouts idea is a good point - almost forgot about getting the wheels in there. I'm not sure what you mean by a "rail mounting system" or return flange. Also, I don't see any particular benefit to going with live axles, hex or otherwise. While live axles certainly make sense for cantilevered wheels as in a West Coast Drive, I don't see the point here.

Team 3266:
If we mounted the electronics directly to the belly pan (probably the best way to do it), I would go back and add mounting holes/material for the electrical components. However, since electronics layout is dependent on other stuff, I would leave it until it was actually going to be built.