Thanks for the help everyone! Lots of interesting info here. I checked, and for reference, our current frame is ~60 lbs, including motors, and supershifters, but not electronics, or anything else. Youch.
I have a couple questions remaining:
-On the subject of Nanotubes, they seem to work pretty well. Am I correct in thinking that the middle wheel is driven by only one of the motors? If so, then wouldn't the speeds between the directly driven one, and the one driving the center one vary? Also, why are they only 31" when the robot can be up to 38?
-On the subject of IFI wheels: What size do most teams use, and why? What is better, the ones from IFI, or the ones from Andymark (non sequiter, IFI wheels from andymark, I get it)
So far,
this frame seems quite good; have you guys had any durability problems with just the tubing? (I assume it's 1/8 inch? Or is it 1/16?)
Finally, we do have welding capabilities, as well as CNC in-school. If you want to see what this year's robot looked like, take a look in my signature. If the video isn't long enough, here are the stats:
Bottom from T-Slot, the top from 1/16 tubing (21 lbs)
Supershifters and 4 CIMS (20 lbs)
Tank Treads (20 lbs)