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Unread 03-02-2010, 13:43
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FRC #0116 (Epsilon Delta)
 
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Re: Fasteners extending outside the FRAME PERIMETER

Quote:
Originally Posted by Vikesrock View Post
Note: Caps denote references to official definitions, not anger or frustration.

That bolt defined the FRAME PERIMETER. If you had a 26"x36" frame with fasteners sticking out in the BUMPER ZONE 1/4" on each side right in the corners, your FRAME PERIMETER was a 26.5"x36.5" rectangle.

This meant the rest of your robot had to fit within a vertical projection of this 26.5"x36.5" rectangle per <R16>.
This is exactly the sort of situation that many people are not fully considering. It appears that many wanted to implement this configuration, or some close variation of it, and are alarmed that the revised wording of the rule appears to complicate their ability to do so. But you have to understand that under the original wording of the rules, this configuration led directly to an illegal ROBOT that would have been rejected at inspection.

In this example, the extended bolt heads defined the vertices of the FRAME PERIMETER. But you have to then consider that the in the area in between the bolt heads, the FRAME PERIMETER is now in free space 1/4 inch away from the actual frame structure of the robot. Under Rule <R07-I>, the BUMPERS must attach to the FRAME PERIMETER. Not 1/4 inch inside the FRAME PERIMETER (where the actual frame structure is located), but directly to the FRAME PERIMETER. Which means that for the portion of the BUMPERS between the bolt heads, the BUMPERS would not be supported. But under Rule <R07-M>, the entire length of the BUMPER backing must be supported and not in free space. Thus, this configuration would have been in violation of at least one, and potentially more, rules.

The revised wording corrected this entire situation and gave you a clean way to bolt your frame together and securely attach the bumpers without a violation.

-dave



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