[sanddrag]

Originally Posted by Ryan Cumings

we are going to use the pneumatic wheels.

I'm not sure if you witnessed the horrendus failure of several robots last year due to pneumatic wheels (I probably should note that many others had great success), but if you do it, do it right. Either use only two pneumatic wheels, or keep the track width much wider than the wheelbase is long, or have 6 wheels sith the center ones lower. In a standard 4x4 configuration, a pneumatic wheeled robot may hop and jump all over the place. I'm not saying pneumatic wheels are bad, I'm just saying make sure you really want them, and all the inherent problems that may come with them.