Bumper question

[plnyyanks]

Originally Posted by KevinGoneNuts

While I have you all here. I also have a bumper question. Attached is a picture of a bumper idea, after reading the rules it seems that this is alright? I want to be 100% sure. Does it seem okay to you?


Attachment 11290

Looks okay to me.

Originally Posted by R27

are required to use Bumpers to protect all exterior vertices of the Frame Perimeter. For adequate protection, at least 8 in. of Bumper must be placed on each side of each exterior vertex (see Figure 4‑1, Figure 4‑2, and Figure 4‑3).

Since all your exterior vertices and the required 8 inch covering are protected, it looks legal to me.

[KevinGoneNuts]

Originally Posted by plnyyanks

Looks okay to me.

Do you know how far it can go into the frame perimeter?

[plnyyanks]

Originally Posted by KevinGoneNuts

Do you know how far it can go into the frame perimeter?

How far that little inlet can go into your frame? I can't find anything in the bumper rules that specifies that...

[JohnBoucher]

Each set of Bumpers (including any fasteners and/or structures that attach them to the Robot) must weigh no more than 20 lbs

Was it not 15 lbs last year?

[Joe Ross]

Originally Posted by JohnBoucher

Was it not 15 lbs last year?

Bumpers were last 15 lbs in 2008. They were 18 lbs in 2009, and 20lbs since.

[KevinGoneNuts]

Originally Posted by plnyyanks

How far that little inlet can go into your frame? I can't find anything in the bumper rules that specifies that...

Thank you! Should I bother the GDC about it or should I just leave it? haha

[slijin]

Originally Posted by plnyyanks

How far that little inlet can go into your frame? I can't find anything in the bumper rules that specifies that...

You're looking for [R33]; if the width of the gap >= 8", then it can only go 1/4" in; otherwise, there seems to be no apparent limit other than your bot itself.

[EricH]

Originally Posted by slijin

You're looking for [R33]; if the width of the gap >= 8", then it can only go 1/4" in; otherwise, there seems to be no apparent limit other than your bot itself.

Ah, but if you don't have a bumper in that section, then there is no limit at all! Well, unless you happen to like having two half-robots.

[buildmaster5000]

What defines the bumper zone this year?? In the past, I remember it being from 1 to 7 inches above the ground (2010 excluded. Bumpers were higher that year), but I cannot seem to find where the "bumper zone" is defined in the manual.

Both <R01> and <R29> reference a "bumper zone" for those who are wondering. Please tell me that bumpers are going to be like the height limit last year, waiting for Q&A to open to ask a question that will greatly impact designs...

[the man]

2 to 10 in above the floor.

[Al Skierkiewicz]

Eagle's interpretation is correct. However, in the past this spec was 6" (six) inches.

[slijin]

Originally Posted by buildmaster5000

What defines the bumper zone this year?? In the past, I remember it being from 1 to 7 inches above the ground (2010 excluded. Bumpers were higher that year), but I cannot seem to find where the "bumper zone" is defined in the manual.

Both <R01> and <R29> reference a "bumper zone" for those who are wondering. Please tell me that bumpers are going to be like the height limit last year, waiting for Q&A to open to ask a question that will greatly impact designs...

[R01] actually defines the Bumper Zone as 2"-10" above the ground, just to reiterate what previous posters have pointed out

[JChavis]

Since it seems that we are already talking about a square U shape for our bumpers, how should teams go around and place their team numbers on the side with the split bumper?

Should teams place the numbers like this:

1. [0000]_______[____]
2. [000_]_______[____]
3. [00__]_______[____]


Or like this:

4. [__00]_______[00__]
5. [__00]_______[0___]
6. [___0]_______[0___]


Our number is 3490, and I am thinking we should split the numbers across the face of the split side (#4).

[GaryVoshol]

Originally Posted by JChavis

Since it seems that we are already talking about a square U shape for our bumpers, how should teams go around and place their team numbers on the side with the split bumper?

Should teams place the numbers like this:

1. [0000]_______[____]
2. [000_]_______[____]
3. [00__]_______[____]


Or like this:

4. [__00]_______[00__]
5. [__00]_______[0___]
6. [___0]_______[0___]


Our number is 3490, and I am thinking we should split the numbers across the face of the split side (#4).

As a ref, I would prefer method 1/2/3. I want to be able to see the whole number at one time. With method 4, I might get confused between 3490 and teams 34 or 90. Methods 5 and 6 seem particulary obnoxious to me - I think it's the single digit by itself that looks bad (unless you are one of those single digit teams!).

I wouldn't have a problem at all with [3490]_______[3490], provided you don't use one of those numbers as a substitute for the number being on another face of the robot. But as Eric mentioned, you should probably clear it through Q&A.

[Cyberphil]

So, as for the question about R27 (8" on each side of each vertex) this is what the QnA answered:

Q. Does the 8" of bumper on the "side of each vertex" mean that there have to be 8" of bumper from each corner (16" total), or 8" of bumper on that side total (8" total, 4" from each corner)?
A. Please refer to [R27]. At least 8 in. of Bumper must be installed on each side of the vertex.

Does this help our discussion whatsoever? They did not clarify anything we found there to be multiple interpretations of.