Don't forget that at the top and the base of the ramp you only have two points of contact. Due to this, there is no advantage to track on the ramp unless you are able to get up there first.

Yes indeed - my mistake.

I meant the polyethylene.

Either way, we have been playing around with the piece we got in the kit, the stuff does get scuffed up fairly easiy, and we noticed that it seems to be even more slippery when it is scuffed....Is that just us? or anyone else find that as well?

Hey guys, a SEGWAY (ad sic nauseum) from the animals pulling the 'bot... our team has decided on Brecoflex treads, rubberized and self-tracking... we found that after repeated use, the big black, supercool wheels scratched the HDEP quite a bit. The scratched surface got slicker and slicker as it got more and more scratched. Everyone probably already has design ideas, but the wheels are going to get harder and harder to manage up there... so check out some brecoflex... just hope the "cheese grater" doesn't get us.
Doom, Doom doom... waffles!

one night i borrowed the piece of polyethylene (or whatever it is) to look at. i got home and my mom suggested i try out her curling gripper (the shoe that grips the ice) and surprisingly it worked very well! :D but one thing i'm not to sure about... is when its on the "cheese grater" as someone said.... but i'm keeping my fingers crossed

i hope people have some luck finding some good grip cause everyone (especially kings of the hill) are gonna need it!

What specific Brecoflex model are you guys using.

Our team has experimented with double sided timing belts on the "cheese grater". We found that when the distance between the grooves on the timing belt is correct it sits perfectly between the metal bars going up the ramp. It was nearly impossible to get it to slide down even with a very small normal force.

See this thread for info about what wheels work well

Cory