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-   -   2012 Bumper rule gray area (http://www.chiefdelphi.com/forums/showthread.php?t=99349)

ratdude747 07-01-2012 13:33

2012 Bumper rule gray area
 
after looking at the bumper rules, Bumper height seems to be not mentioned anywhere...

either I am missing something, they missed something, or they intentionally left it ambiguous (perhaps to allow robots to cross the center bump and why lift kits appeared in first choice).

GaryVoshol 07-01-2012 13:36

Re: 2012 Bumper rule gray area
 
Bumper Zone is defined in the Blue Box under [R01], 2 to 10 inches from the floor.

ratdude747 07-01-2012 13:40

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by GaryVoshol (Post 1098017)
Bumper Zone is defined in the Blue Box under [R01], 2 to 10 inches from the floor.

ah. Brain fart.

GaryVoshol 07-01-2012 13:41

Re: 2012 Bumper rule gray area
 
No, not a brain fart. Perhaps the lack of a search, but nothing more.

But - does anyone remember Blue Boxes specifically mentioned as not being part of the rules in previous years? I can't find any such definition this year.

Al Skierkiewicz 07-01-2012 15:18

Re: 2012 Bumper rule gray area
 
look for corrections in future team updates.

Steve Ketron 09-01-2012 12:43

Re: 2012 Bumper rule gray area
 
so is that 2 to 10 inches measured from the bottom of the bumper correct?????

SteveGPage 09-01-2012 12:49

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by Steve Ketron (Post 1100599)
so is that 2 to 10 inches measured from the bottom of the bumper correct?????

No, from the floor, as mentioned in [R01] "... within the Bumper Zone, which is between 2 and 10 in. from the floor."

The bumpers need to be totally contained inside of that zone, meaning the bottom can not be any lower than 2 inches from the floor, or the top any higher than 10 inches from the floor.

DarrinMunter 09-01-2012 13:00

Re: 2012 Bumper rule gray area
 
With the bumpers that low, driving over the center bump (not using ramps) is going to take a bit more thinking.....

Japper 09-01-2012 13:18

Re: 2012 Bumper rule gray area
 
Quote:

[R01] states, "The robot must have a Frame Perimeter that is comprised of fixed, non-articulated structural elements of the robot. The frame perimeter of a robot is defined by the outer-most set of external verticies on the robot that are within the bumper zone which is between 2 and 10 in. from the floor."
To me this reads like it is only covering the side perimeter of the robot and not the bottom as I am trying to see if we can incorporate an extra set of wheels on a swing arm under the robot to allow us to lift our (2" from the floor) bumpers over that metal curb in the middle of the field.

Any thoughts on that?

SteveGPage 09-01-2012 13:22

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by Munter2081 (Post 1100615)
With the bumpers that low, driving over the center bump (not using ramps) is going to take a bit more thinking.....

Notice, if you place the bumpers in the higher part of the zone, the bottom of the bumpers would be about 4.5 inches off the floor. The barrier is only 4 inches tall.

Jon Stratis 09-01-2012 13:23

Re: 2012 Bumper rule gray area
 
It definitely seemed like the rules were missing the whole "definitions" section that they've had in the past, where things like frame perimeter and bumper zone were defined.

SteveGPage 09-01-2012 13:24

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by Japper (Post 1100637)
To me this reads like it is only covering the side perimeter of the robot and not the bottom as I am trying to see if we can incorporate an extra set of wheels on a swing arm under the robot to allow us to lift our (2" from the floor) bumpers over that metal curb in the middle of the field.

Any thoughts on that?

How the bumper zone is calculated with a swing arm changing the height from the floor sounds like a question to submit to the GDC.

Alan Anderson 09-01-2012 13:57

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by eagle33199 (Post 1100641)
It definitely seemed like the rules were missing the whole "definitions" section that they've had in the past, where things like frame perimeter and bumper zone were defined.

Yep, I spent a good half hour searching for it Saturday afternoon. The unobvious definitions seem to be scattered throughout the blue boxes.

the man 09-01-2012 14:29

Re: 2012 Bumper rule gray area
 
Quote:

Originally Posted by SteveGPage (Post 1100640)
Notice, if you place the bumpers in the higher part of the zone, the bottom of the bumpers would be about 4.5 inches off the floor. The barrier is only 4 inches tall.

Wouldn't it be closer to 5", slightly less for bumper covering material?

Bryce Paputa 09-01-2012 15:13

Re: 2012 Bumper rule gray area
 
Another thing with the bumpers, is that one of the images seems to be incorrect, figure 4-2


(http://imgur.com/o0BbJ)

Although there is some unnecessary bumper, I don't see an issue with the circled edge.


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