Quote:
Originally Posted by EricH
I'd also be cautious about the plywood in the corners--because you're changing segments, you may run afoul of <R07-C>'s corner/segment joint-filling rules. In the past, it's been much clearer about whether or not hard parts in corners is prohibited (it was in the past, not sure about this year).
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Quote:
Originally Posted by Tristan Lall
Some years it was allowed, some years it wasn't. It's been quite inconsistent historically.
This year, a fully overlapped 90° corner with 0.750 in plywood would have a dimension of approximately 1.060 in between the outermost extent of the "hard part" of the bumper (the plywood corner) and the corner of the frame perimeter. That violates <R07L>, which stipulates a maximum of 1 in.
What makes this really insidious is that not every corner that overlaps would run afoul of this rule. Other angles or incomplete overlap might still satisfy <R07L>.
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It's still there:
Quote:
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D. BUMPERS segments must have a minimum length of six inches (as defined by the BUMPER backing), and a maximum length that does not exceed the maximum horizontal dimension of the ROBOT (except for the soft cushion in the corner, as permitted by Rule <R07-C>).
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Now, you have to read into this that the "maximum horizontal dimension" means the dimension of the portion of the frame that the bumper is attached to.
If you use a non-rectangular frame (e.g. x-gon where x>4), the maximum horizontal dimension of your robot is longer than the length of any one side.
And if you do have a rectangular frame, this could be read that on the long sides, the wood can be no more that the length of that side, but on the short side the wood could be longer than the side, up to the length of the long side or the 1" hard part rule (<R07-L>), whichever is less.
However, 2010 rule <R07-B> read the same way as this year's rule, so I would assume anyone asking the GDC would get the same answer as in prior years - the wood segment cannot extend beyond the length of the frame segment.
Incidentally, the quasi-bumpers on the outriggers do not have to conform to <R07> - you could make them 3-noodles high if you wanted, or have hard parts around the corners. They would only have to comply with other rules about your extensions not harming another robot.