See this thread:
http://www.chiefdelphi.com/forums/sh...t=bumper+frame
Your black bracket on the back of the bumper seems to fall into one of those designs. The question is whether that will be considered in compliance with <R07-I>:
Quote:
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I. BUMPERS must attach to the FRAME PERIMETER of the ROBOT with a rigid fastening system to form a tight, robust connection to the main structure/frame (e.g. not attached with Velcro). The attachment system must be designed to withstand vigorous game play – nut and bolt fasteners are recommended. All removable fasteners (e.g. bolts, locking pins, pip-pins, etc.) will be considered part of the BUMPERS.
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(emphasis mine)