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| Honey, will you tether your soul to mine? |
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#1
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I was going through the checklist and found that our bot was in violation of R31 (my bad
) but was unsure of a legal solution.The specific part we are in violation of is: "Additionally, any gap between the backing material and the frame: A. must not be greater than ¼ in. (~6 mm) deep, or B. not more than 8 in. (~20 cm) wide" ![]() So it's greater than 8 inches, which means we have to move our support pieces inwards. The distance from the support to either end of the robot is fine, it is only the middle that is too wide. However, knowhere in the rules did I see a statement on how much the bumpers need to be supported by the frame. In particular, would the following solution be legal? ![]() As you can see, the minimum distance is now less than 8 inches, but the maximum distance: ![]() is still over 8 inches. Would this solution be legal during inspection or does the "minimum" distance have to be <8in? |
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#2
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Maybe it's just the way the drawing looks to me. But are your wheels OUTSIDE your frame?
If so you've got a far bigger problem, because now your wheels form your FRAME PERIMETER, and the BUMPERS have to be attached to them. If that's not the case, and your wheels are set back inside, then you may not need to change anything. You don't need a BUMPER along the whole side of your ROBOT. You only need at least 6 inches from each corner. If you're willing to leave the center wheel exposed, you don't need to have a BUMPER there at all. Last edited by GaryVoshol : Yesterday at 18:17. |
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#3
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Can you attach a plate that extends to the left and right of the post? Most "west coast drive" chassis have some sort of post with a plate.
Also, you technically don't need bumper in the middle. Just 6" on each side of a corner of the frame perimeter. |
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#4
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Quote:
![]() The wheels are recessed by a bit. I also would like to have the center wheel protected rather than exposed. |
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#5
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Your solution appears to be legal. You your only allowed 8 in gap without no support. The rules don't detail how robust the support needs to be. But keep in mind that defense is likely to be rigorous.
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#6
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Quote:
--- OP: The sideways configuration you showed is totally fine. Basically the bumpers have to touch a frame member every 8 inches. It doesn't matter how MUCH of the frame they are touching - they can touch just a 1" tall section like the sideways tubes show. It's no problem. As long as the "gap" between each tube is less than 8 inches it's fine. |
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#7
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Thank you for posting this, I decided to check our bot just incase, and it turns out we broke this rule too... :/
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#8
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
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#9
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
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#10
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
You could always just rivet a small piece of aluminum plate onto the 2x1 in the upright position to make it have more bumper contact. It would fulfill the rule. I have seen teams that even just run some 36" long tube axle spacer from vexpro down the entire length of their frame above their wheels to fulfill the rule as well.
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#11
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
IMHO, it is silly that you have to have backing where you don't have to have a bumper.
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#12
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
Quote:
![]() Last edited by Richard Wallace : Yesterday at 23:00. |
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#13
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Re: Gap Between BUMPER and FRAME PERIMETER Legality Question
True. Nominated for spotlight.
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