[qnetjoe]

One of the reasons for having it 2" off the ground might have to do with the cog of robot(s) during a moderate speed collision.

If you set the bumper zone too low then any contact with a moving bot would more than likely result in the tipping of at least one of the bots involved.

Although that would really create options for interesting strategy if G27 was not around.

Just my two cents....