Bumper question

[CrashTestPilot]

Originally Posted by tlivingd

I believe the interior bumper is not ok as FIRST wants an 8" 'strike' zone to minimize damage to other machines. Otherwise below would be legal and leave a point that can cause damage to other machines. not to mention the whole 120 lb weight limit.
EDIT: It maybe good for a rule clarification about exterior angles that are less than 90* and thus protruding within the machine.

OK, so per rules as they are stated in rev 00 and 01 this configuration would still be legal but would not meet the intent of having 8" strike zone so the bumper rules are likely to be revised to not allow for such frame?

Also, imagine starting off with a rectangular frame and chamfering two adjacent corners in such way that the chamfer diagonal length was at least 8". If the short wall in between the two chamfers was completely removed to make a ball intake would that satisfy all the rules? Figure 4.2 does not show such configuration. I assume it would also be against the spirit of the rule.

Wait: I think I got it. If the inlet is created by removing a section of straight wall as shown in fig 4.3 it does not create any new verticies for the frame perimeter. If the chamfers are added they will create two new verticies and those need 8" on each side of the vertex.