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Unread 23-01-2011, 11:32
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Tristan Lall Tristan Lall is offline
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Re: Are extensions with bumpers after the start of the game legal

Quote:
Originally Posted by GaryVoshol View Post
It's still there:

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.
That "maximum horizontal dimension" rule is still a bit messed up: imagine an isosceles triangle with one side just under 28 in, and two sides of 40 in. That fits within the permitted "maximum horizontal dimensions", but has a larger horizontal dimension than anything specifically described. In fact, geometrically, it would be extremely reasonable to say that the maximum horizontal dimension of a "28” x 38” (71.12cm x 96.52cm) rectangular space" is about 47.2 in (the hypotenuse). And even if you define it in terms of the current robot (rather than the hypothetical—this is not clear in the rule), you can still take a diagonal measurement that would seem to define the maximum horizontal dimension.

As for plywood extending into the corners, <R07C> seems to permit it ("by beveling the ends between adjacent segments"), and Figure 4-2 appears to support this interpretation (at low resolution, so at best it's inconclusive). <R07K> does not disallow it (since the "unsupported" portion of bumper backing is less than 8 in—a key difference from last year's rule which required the entire length of the bumper be supported by the frame perimeter). (<R07B> doesn't seem to be a factor here; were you thinking of something else?)