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#31
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Re: Ball deflectors.....don't
To me, from the matches I watched, it seems like the problem really is teams don't try to ballance soon enough, and that they don't use bridge pushers build for "the rigor of the game." This seems less like a failure of FIRST, but rather a failure of teams to design durrable and functional mechanisims. Not that I think our team's will be any beter, though.
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#32
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Re: Ball deflectors.....don't
I saw a bridge balance not count because balls were under the bridge and were supporting it...
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#33
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Re: Ball deflectors.....don't
Really? Did the teams put the balls there, or even somewhat allow them to go there? If not it should have counted.
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#34
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Re: Ball deflectors.....don't
Alamo did not have this change as far as I am aware and I was an inspector on the field for a lot of the competition.
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#35
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Re: Ball deflectors.....don't
We were not allowed a fifth member at Kettering. Instead we tried to use crowd members to tilt a sign we had (we have four signs - 3, 3, 2, 2.) if a ball was stuck under a bridge (which confused our driver the very first match.)
However when we moved on the second day, even us in the crowd couldn't see the bridge from the other side. |
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#36
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Re: Ball deflectors.....don't
Whether it's part of the design challenge or not, it's frustrating.
It's possible for the balls to get pinched between the polycarb 'deflector', and the field boarder on the alliance color bridge. Even with our ball pickup device, designed to lift the bridge and suck balls out, we couldn't clear them when they got like that. It's rare, but they're just plain stuck, and in a manner I don't think anyone expected. Balls trapped under the bridge decided many matches. It's a bummer, and short of a change to the deflector that FIRST is likely unwilling to make, it's going to be a common one. |
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#37
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Re: Ball deflectors.....don't
How did you find this out? Was there any particular regional that this was announced at?
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#38
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Re: Ball deflectors.....don't
Quote:
just losing in the semis in Hatboro-Horsham due to this issue, I have to agree. If you look at the original bride video here: http://www.youtube.com/watch?v=-AMaq...eature=related the big difference between the video and the actual field was the polycarb sheet sagged badly. It not even close to a flat sheet as shown in the video and was ineffective in having balls roll back out. It would be an egregious violation of the rules and gracious professionalism, but an effective strategy would be for inbounders to 'accidentally' send balls under an opponents bridge... |
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#39
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Re: Ball deflectors.....don't
The head referee at Smoky Mountains came to our team and the team next to us in the pits first thing Friday morning and asked to speak with the drive teams; he specifically told us we were allowed to have a fifth person that did not count toward our 4 on the drive team that could stand on the side of the court and give hand signals. I assume he did the same to all the teams there.
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#40
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Re: Ball deflectors.....don't
Quote:
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#41
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Re: Ball deflectors.....don't
Nor at Gull Lake.
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#42
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Re: Ball deflectors.....don't
That's frankly quite bizarre. It would seem that the head ref overstepped his boundaries, and changed the rules quite dramatically. I hope that they had a chat with FIRST before this rule change.
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#43
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Re: Ball deflectors.....don't
Quote:
Quote:
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#44
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Re: Ball deflectors.....don't
Quote:
Essentially, the teams were being allowed to formalize an otherwise unofficial signaling system which has always been available. Dr. Bob Chairman's Award is not about building the robot. Every team builds a robot. |
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#45
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Re: Ball deflectors.....don't
Quote:
The 'solution' is for drivers to recognize how a bridge behaves when a ball is trapped in a place they can't see. If it's not working, stop trying to drop the bridge and figure out a way to either tip it up to clear the ball or pursue something else. It is possible for a robot to get on the bridge from the other side and 'crush' the ball enough in most cases for a second robot to get on the bridge on the ball side. It depends on where the ball is under the bridge and how much of a lip the robot can climb over. |
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