[EricH]

Originally Posted by Chak

I believe that since frame perimeter is measured by a string wrapped around the robot, it doesn't matter how long the bent ends are as long as the bumper itself is 8".

Nevertheless, that looks too weak. The bumper rules aren't there to limit you; they're there to make sure the robots are safe.

What you believe just ran smack into R26 (minimum 1/2" at each end backed), and if you have built your bumpers per your belief, you still have time to fix them prior to bag day rather than at your first event.

I agree that it looks too weak, however. You'll want to put some backing in there. Actually, if I were you I'd try to use flanges on the next iteration--I think you could make a very similar piece that was plenty strong. Oh, and just as a note--I could see the pictured configuration rapidly ending up rubbing a wheel. Make it stronger, and bring it closer (if you need to in order to make frame perimeter length).