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Bumper clarification
My team is a little confused on R19:
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I am specifically asking about the scenario below, where there is a gap in the front of the robot. Can the 2 sides surrounding the gap be less than 8" in length (e.g. 4")? ![]() Clarification would be greatly appreciated! |
Re: Bumper clarification
From Q&A:
Q520 Q. Bumper rule R19 states "If a side is shorter than 8 in., the entire side must be protected by BUMPER". If the side is 27" with a 13" cut-out (14" remaining) does the 8" minimum apply or is the 7" on either side of the cut-out considered a full side less than 8"? A. Per the Blue Box below R19: the dimension defined in R19 is measured along the FRAME PERIMETER. A lack of physical frame elements between corners of the FRAME PERIMETER does not change the length of the FRAME PERIMETER side. |
Re: Bumper clarification
As far as I understand it, no. The front of the robot in your picture is longer than 8" therefore 8" of it must be covered by bumper.
In addition per R26 Bumpers must be backed by at least 1/2" on each end. For your drawing to be legal the two 4" sides would have to be at least 8". Anything more than that can be an unbumpered opening. |
Re: Bumper clarification
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So that would mean that the 4" on either side scenario would be acceptable (4+4>=8) but anything less would violate R19? That is how my team is interpreting that answer, which is contrary to what Jacob suggested. |
Re: Bumper clarification
You would need 8 inches on each side, the cutout would have no bearing on how the frame perimeter is calculated.
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Re: Bumper clarification
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Re: Bumper clarification
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That's what QA520 (quoted above) says. |
Re: Bumper clarification
"at least 8 in. of BUMPER must be placed on each side of each outside corner"
This rule is surprisingly clear when read carefully. The key is understanding what "each side of each outside corner" means. It means that for every extreme convex corner of your frame, the edges that intersect at that corner must have 8 inches of bumper starting from the point of intersection and ending at a minimum of 8 inches in the direction towards the opposing end of each respective edge. Basically, any given side of a robot will have at least 16 inches of bumper, as each corner of that side will have a minimum of 8 inches. |
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