# vertical frame perimeter

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.

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

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

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.

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.

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.)

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.