Bumper Zone Contact

[Alan Anderson]

Originally Posted by Peter Matteson

With no arms to push high on a robot with how does some one tip in this game in a level ground pushing match?

You don't need arms up high when your bumpers are up high.

[Peter Matteson]

Originally Posted by Alan Anderson

You don't need arms up high when your bumpers are up high.

But is your weight high?

If your CG is below your bumpers it shouldn't be easy to tip a robot. Tipping with arms was usually 2-3 feet off the ground, not 13 inches where the centerline of the bumper is.

[coldfusion1279]

I can guarantee that if a team has any sort of traction wheels (i.e. no HDPE, omni, or mecanums) and with the center of the bumpers being ~13" high that the robot can flip on flat ground no matter how low the cg is. Especially if the robot is in motion and shifting its momentum in different directions.

[Jon Stratis]

Originally Posted by coldfusion1279

I can guarantee that if a team has any sort of traction wheels (i.e. no HDPE, omni, or mecanums) and with the center of the bumpers being ~13" high that the robot can flip on flat ground no matter how low the cg is. Especially if the robot is in motion and shifting its momentum in different directions.

Keep in mind, however... if the robot is designed to go over a bump, that means it can also be tipped at least 45 degrees before gravity will do the work to flip it over. That's a pretty big tip, and for a vast majority of robots, that will require prolonged contact and pushing outside of the bumper zone. The only caveat to this is, of course, if your CG is not properly centered in the robot. If it's significantly to one side, you'll be easier to tip.