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-   -   pic: Legal Bumper Configuration? (http://www.chiefdelphi.com/forums/showthread.php?t=71460)

AdamHeard 09-01-2009 17:39

Re: pic: Legal Bumper Configuration?
 
The Wording on update #2 is frustrating, it doesn't specifically say that bumpers must be on the front, just seems to show that IF you have bumpers on the front.

I guess I'll wait for the QnA response.

Alan Anderson 09-01-2009 19:18

Re: pic: Legal Bumper Configuration?
 
Quote:

Originally Posted by AdamHeard (Post 796939)
The Wording on update #2 is frustrating, it doesn't specifically say that bumpers must be on the front, just seems to show that IF you have bumpers on the front.

The update doesn't have to say it. The manual already specifies where the bumpers must be. The relevant paragraph:

Quote:

Originally Posted by <R08> I
BUMPERS must protect all exterior corners of the BUMPER PERIMETER (see Figure 8 - 2).

It's clear -- to me, anyway -- that every side of the robot must have bumpers at the corners at least.

Mike8519 09-01-2009 19:23

Re: pic: Legal Bumper Configuration?
 
Looking at the intent of the rule, your configuration is illegal because the goal could protrude into your robot.

Madison 09-01-2009 19:28

Re: pic: Legal Bumper Configuration?
 
Quote:

Originally Posted by Mike8519 (Post 797044)
Looking at the intent of the rule, your configuration is illegal because the goal could protrude into your robot.

You don't know the intent of the rule and, further, even there are 6" bumpers along the front edge, it's still possible for the trailer to protrude into the robot.

Otaku 09-01-2009 19:29

Re: pic: Legal Bumper Configuration?
 
The bumper configuration is legal from what I understand, however the indentation which is presumably to help keep the trailer controlled isn't legal.

Both of these are assuming I've read the rules right. I may or may not be wrong. The only official answer you can get is from the FIRST Q&A Forum, though.

Mike8519 09-01-2009 19:39

Re: pic: Legal Bumper Configuration?
 
Quote:

Originally Posted by Madison (Post 797047)
You don't know the intent of the rule and, further, even there are 6" bumpers along the front edge, it's still possible for the trailer to protrude into the robot.

From team update #2:
Quote:

But when taken together and the robot is designed to satisfy ALL of the requirements of the rule, these clauses can have a very pronounced effect. In the case of the archetype “wide drive” robot with a centered opening on the front of the robot, this can result in a significant limit on the size of the opening. This limits the ability for incursion inside the bumper perimeter by the trailer. See the example below.

Based on the small paragraph below the highlights of R08 they state that the bumpers limit the goal incursion. I suppose to both limit trapping offense tactics and minimize damage if a trailer goes inside a robot.

Mike Wittman 09-01-2009 20:02

Re: pic: Legal Bumper Configuration?
 
As I understand Team Update #2, this configuraion would not pass robot inspection.

GaryVoshol 09-01-2009 20:03

Re: pic: Legal Bumper Configuration?
 
The only way to know is to ask Q&A point-blank: "Must every side of the robot have bumpers?"

AdamHeard 09-01-2009 20:26

Re: pic: Legal Bumper Configuration?
 
I have QnA'd, it has yet to be answered. We'll see then I guess.

Pretty much it comes down to two things;

1) does the 3.5" of soft bumper from the adjacent sides constitute protecting a corner?

2) Must bumpers be on all sides.

Bochek 09-01-2009 22:03

Re: pic: Legal Bumper Configuration?
 
The outcome of this will cause some major design changes for lots of teams should it be Illegal.

Bochek 10-01-2009 10:01

Re: pic: Legal Bumper Configuration?
 
Any News From the GDC yet?

sanddrag 10-01-2009 13:20

Re: pic: Legal Bumper Configuration?
 
My interpretation of the rules would say this design is legal, but that's not to say my interpretation is what the GDC has in mind. When they say the corners must be protected, protect it how? Protect it from contact intiated from which direction? And what defines a "corner?" What if a robot has curved "corners"? How much does it need to be curved before it is no longer a corner?

gburlison 11-01-2009 14:37

Re: pic: Legal Bumper Configuration?
 
Quote:

Originally Posted by Mike8519 (Post 797044)
Looking at the intent of the rule, your configuration is illegal because the goal could protrude into your robot.

Which rule are you referring to?

Mike8519 11-01-2009 14:45

Re: pic: Legal Bumper Configuration?
 
The text under the highlighted points of R08 in team update #2 has a few choice words that lead me to believe their intent is to prevent a high level of goal incursion I suppose for robot safety and limiting offensive tactics.

AdamHeard 11-01-2009 14:59

Re: pic: Legal Bumper Configuration?
 
Quote:

Originally Posted by Mike8519 (Post 798657)
The text under the highlighted points of R08 in team update #2 has a few choice words that lead me to believe their intent is to prevent a high level of goal incursion I suppose for robot safety and limiting offensive tactics.

I think it was meant to point out that many legal bumper configurations allow the goal to protrude, and teams should be aware of possible goal to inner robot interaction.


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