R35 is the bumper rule. It basically says the bumpers must stay between 2.5 and 8.5 inches. But if you use two pool "noodles" as suggested, that only gives you an inch or so of leeway. So 2.5 to about 3.5 inches from the ground. The mounting your bumpers so that you can go up the ramp is obviously something that needs to be kept in mind during your design and build stage. I won't give away our robot, but perhaps you could mount the bumpers on the sides perpedicular to the ramp instead of parrallel?
Another option, if you have drive wheels in the back and you hit the ramp, even if you're front wheels dont make the ground, the back wheels could push you up?
Just some things to think about
