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Unread 11-01-2008, 01:56
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Bumper Rule

Do the bumpers have to surround the frame/base of the robot completly, or can there be a gap? My team has looked at the rules, and everyone interprets it slightly differently. Anyone know??
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Unread 11-01-2008, 01:58
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Re: Bumper Rule

It has to cover 2/3, so you can have one side un-bumpered.
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Unread 11-01-2008, 02:10
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Re: Bumper Rule

this is a good question as we were wondering the same thing.
perhaps others can provide more insight.
Where is the 2/3 rule?

thanks
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Unread 11-01-2008, 02:12
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Re: Bumper Rule

There was another thread on it that actually called out the exact rule, I'm going to bed pretty soon here so I won't look it up but I do remember reading it earlier today.
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Unread 11-01-2008, 02:15
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Re: Bumper Rule

Quote:
<R08>STANDARD BUMPERS must protect a minimum of 2/3 of the perimeter of the ROBOT withing the BUMPER ZONE... to provide flexibility in design options...
there u go!
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Unread 11-01-2008, 02:15
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Re: Bumper Rule

why so early? its only 9:15pm....

















Hawaii time.
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Unread 11-01-2008, 02:36
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Re: Bumper Rule

Quote:
Originally Posted by waialua359 View Post
why so early? its only 9:15pm....
Hawaii time.
Because I'm in California. =p
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Unread 11-01-2008, 03:26
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Re: Bumper Rule

So basically, to be safe, 3 sides of your robot... assuming its a rectangular robot.
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Unread 11-01-2008, 07:04
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Re: Bumper Rule

Another question and answer on bumpers just for clarification.

Rules say that bumpers need to 2 1/2 inches from floor and 5" tall. What if I do not want a chassis that is 7 1/2" tall from the chassis? I'm assuming that I can have the bumpers above the chassis walls/sides if I want. Is this correct?

I may have to go to Q&A on FIRST.
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Unread 11-01-2008, 07:52
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Re: Bumper Rule

That would be correct. As long as the bumpers are in the bumper-zone space, you can put your chassis and effectors wherever you please.
I think the reasoning behind the super-defined bumper zone is to keep all contact at the same level and create a "safe zone" for the more fragile components such as manipulators.
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Unread 11-01-2008, 10:49
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Re: Bumper Rule

Quote:
Originally Posted by AndyB View Post
So basically, to be safe, 3 sides of your robot... assuming its a rectangular robot.
This was the general rule last year. As long as you have 3 sides covered, you wont have any issues with the judges.
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Unread 11-01-2008, 11:02
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Re: Bumper Rule

Quote:
Originally Posted by 65_Xero_Huskie View Post
This was the general rule last year. As long as you have 3 sides covered, you wont have any issues with the judges.
There was no rule in place last year requiring teams to have bumpers.
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Unread 11-01-2008, 11:23
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Re: Bumper Rule

Quote:
Originally Posted by Compnerd View Post
Do the bumpers have to surround the frame/base of the robot completly, or can there be a gap? My team has looked at the rules, and everyone interprets it slightly differently. Anyone know??
To answer your original question - yes, there can be gaps as long as you cover 2/3 of the perimeter, and no bumper segment can be less than 6" long.
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Unread 11-01-2008, 11:30
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Re: Bumper Rule

With a give maximum sized robot of 38" x 28" giving us:
((38*2) + (28*2)) = 132" perimeter

2/3 of 132" = 88"

Technically I guess you can only cover 88" worth of sides if you wanted to.

Some people tend to cover just 3 sides of their robots so using the 2 most basic configurations of robot design...

1) 38+38+28 = 104" of Bumper (38" Sides & 28" Rear)

or

2) 28+28+38 = 94" of Bumper (28" Sides & 38" Rear)

In configuration 1, you are good.

In configuration 2, you are good as well.
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Last edited by Elgin Clock : 11-01-2008 at 11:42. Reason: Typo! Oh No!!! Thanks for catching that Raul!
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Unread 11-01-2008, 11:32
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Re: Bumper Rule

Specifically, the rule states that a STANDARD bumper as defined in Fig. 8-1 must be no shorter than 6 inches. Since they also do not want "hard" bumpers in the corners, you must place a vertical pool noodle to soften the corners of the side or front bumpers such that it covers the corner.

The extra vertical pool noodle that isn't part of the STANDARD bumper cannot count toward the minimum 6 inches. Though it is unfortunate, this is the only interpretation of this rule I can come up with.
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