[Nuttyman54]

I think the question was more directed at the large gap in the front of the frame, in terms of complying with <R07> K: "No section of the BUMPER greater than 8" may be unsupported".

It appears that the cutout in the front of the robot is wider than 8", so that section cannot legally meet all the bumper rules. You will need to put a frame member to support a bumper there. Per rule <R07> A, you need bumper coverage around your entire FRAME PERIMETER, which does include that gap.