Bumper Question

[serenagh]

I understand R19 and R21, and I know this is not the official Game Q & A -- I'll ask there if no one here points out a rule I'm overlooking.


R19 ROBOTS are required to use BUMPERS to protect all outside corners of the FRAME PERIMETER. For adequate protection, at least 8 in. of BUMPER must be placed on each side of each outside corner

Is it legal too, for example, manufacture a bumper which is 9", but where the last inch slopes inward at an angle (say, 45%)? Or is this a violation of R21 C? A similar scheme is legal for the outer corner (see images below R24), where teams use beveled edges to mate bumpers together.

We're interested because it might help our intake to have a "slope" to help filter the ball in.


Thoughts?