vertical frame perimeter

[Stagger007]

Is the frame perimeter a two dimensional or a three dimensional measurement? From the diagrams in the rule book, frame perimeter seems to be the two dimensional area the robot occupies on the floor. My main question is what is the maximum height the frame can be mounted off of the floor? Our wheels are mounted on large brackets suspended from the body of our chassis. Do these brackets count as the frame? Does frame perimeter have a vertical component?

[akoscielski3]

Originally Posted by Stagger007

Is the frame perimeter a two dimensional or a three dimensional measurement? From the diagrams in the rule book, frame perimeter seems to be the two dimensional area the robot occupies on the floor. My main question is what is the maximum height the frame can be mounted off of the floor? Our wheels are mounted on large brackets suspended from the body of our chassis. Do these brackets count as the frame? Does frame perimeter have a vertical component?

Considering your bumpers must be in contact with your frame perimeter i believe it is safe to say that your frame perimeter must be within 2-10 from the floor. And yes it could come out of this zone but some of your frame perimeter must be in this area to hold the bumpers.

[Stagger007]

if our frame is 10 and a half in will that be within the rules

[thefro526]

Originally Posted by R01-2

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 exterior vertices on the Robot that are within the Bumper Zone, which is between 2 and 10 in. from the floor. Minor protrusions no greater than ¼ in. such as bolt heads, fastener ends, and rivets are not considered part of the Frame Perimeter.

Originally Posted by R02

The Robot must satisfy the following size constraints:
horizontal dimensions must not exceed 28 by 38 in.,
the absolute height must not exceed 84 in.,
the height of the Robot at the start of the match must not exceed 60 in.,
any appendage may not extend more than 14 in. beyond the frame perimeter, and
no other part of the Robot may extend beyond the vertical projection of the Frame Perimeter (with the exception of minor protrusions permitted per [R01-2]).

For the purposes of determining compliance with the volume limitations, the Bumpers are not included in the size assessment.

Your frame as described appears to violate R01-2 and R02.

[akoscielski3]

I believe that is fine. However you need to remember that your bumpers must be within the 2-10in zone and must be supported by you Frame Perimeter. The bumpers can not have a zone bigger than 8in, in which they are not supported by the frame perimeter. Someone else may wont to explain this, as i am a bad explainer.

here is the rule i was talking about
[R33]
Bumpers must be supported by the structure/frame of the Robot (i.e. each end of the Bumper must be rigidly attached to the Frame Perimeter, the gap between the backing material and the frame must not be greater than ¼ in. and no section of Bumper greater than 8 in. may be unsupported). See Figure 4‑7.

[Grim Tuesday]

In response to the question of the deleted thread, what defines the frame perimeter:

"The Frame Perimeter of a Robot is defined by the outer-most set of exterior vertices on the Robot that are within the Bumper Zone, which is between 2 and 10 in. from the floor."

-[R01-2]


That is to say, you may but do not have to go up to 28*38" in frame perimeter, but in the application of the term 'Frame Perimeter' to other rules, it is relative to your robots perimeter, not the maximum allowable.

[thefro526]

Originally Posted by akoscielski3

I believe that is fine. However you need to remember that your bumpers must be within the 2-10in zone and must be supported by you Frame Perimeter. The bumpers can not have a zone bigger than 8in, in which they are not supported by the frame perimeter. Someone else may wont to explain this, as i am a bad explainer.

here is the rule i was talking about
[R33]
Bumpers must be supported by the structure/frame of the Robot (i.e. each end of the Bumper must be rigidly attached to the Frame Perimeter, the gap between the backing material and the frame must not be greater than ¼ in. and no section of Bumper greater than 8 in. may be unsupported). See Figure 4‑7.

If they're using the AM Lift Kit or similar and their actual frame is 10.5" off the ground then it's in Violation of R01-2 as noted in my above post. The frame Perimeter is defined only by what resides in the plane of the bumper zone. If the only think in that zone is are the brackets of the lift kit, then they're going to need a subframe of some sort to correctly define their frame perimeter. (The Polygon defined by the exterior vertices of the lift brackets is substantially smaller than the frame required to support them.)

[DonRotolo]

Originally Posted by Stagger007

if our frame is 10 and a half in will that be within the rules

Listen: We really want to help, but we're all just guessing here, we can't say for sure if you mean the top of your frame is 10.5" from the floor, or if it starts at 10.5" high, so please, please, explain what you are asking in detail - as if we were 5-year olds who knew nothing about your design - so we can offer our advice.

Of course, OUR advice is only that - advice, If you have a specific question about a rule and want an official answer, the FIRST Q&A system is the only way for that to happen.

So: Read the rules very carefully as Mike Martus already advised, then come back and ask a specific question. Thanks.

[Alan Anderson]

Originally Posted by DonRotolo

If you have a specific question about a rule and want an official answer, the FIRST Q&A system is the only way for that to happen.

And remember that the Q&A system is intended only for questions about the rules. Questions about specific robot designs can not be answered there.