(Part 2 is on the horizon)
Why the gap in the sides of your bumpers?
Why not?
Less bumpers to make 
Quite a nifty way to get up on that 1st level. I like it.
Probably just reusing last years bumpers 
So do you have to drive through the pyramid to exit without catching the pipe?
Very cool! Good luck to you guys in Kansas and Oklahoma this year!
We have a 99% identical climbing device, down to the way you bolted on the plastic to the claws. Also, both our robots have treads (a rare thing these days). Our teams should be twins. Though, ours can’t go through the tower like yours can. That’s a cool feature for sure.
What are your treads made of? Ours are Brecoflex conveyor belts with a really sticky surface on them.
We use Brecoflex belts, as well. The key difference is that they are smooth.
We need places to store extra frisbees if needed.
http://s17.postimage.org/a9efv6bv3/8697_4607729674517_1748847788_n.jpg