Question on mounting PVC for flag

If our team has a moving arm which is the highest point of our robot, how do we mount a flag which supposed to be 18" higher minimum above our robot vertically at all times??
Can someone provide clarification on this?
:smiley:

That refers to the distance above your robot in its starting configuration, be it 4, 5, or 6 feet.

There is no need for the flag to be higher than a moving arm
that swings around. It would be reasonable to mount it so that
it sticks up 18 inches higher than the highest portion of your robot
that does not swing around, so that it is easily seen.

Eugene

<R15> says, in part:

…The flag holder must be permanently mounted to the ROBOT such that when the ROBOT is in any PLAYING CONFIGURATION and the FLAG is in the flag holder, the FLAG is approximately vertical and the top of the FLAG is a minimum of 18 inches higher than any point on the central mass or structure of the ROBOT (note: ROBOT arms, appendages, and extensions may temporarily intrude into the space above the top of the ROBOT and exceed this height of the FLAG – this a normal part of game play, and will not be considered a violation of this rule).
Note what I have highlighted in red and the part in parentheses.

If you were to mount it in such a way that the arm cannot waste it and it is the highest point without damaging the flag, im sure it will work.

Chris

what about if the highest point of a teams robot is their ramps, and they come down at the end of the match, are you allowed to attached the flag holder to the top of the ramp so it will com down with the ramp? or does it have to hold its own at that height?

http://forums.usfirst.org/showthread.php?t=3445

Q:We have a question concerning the placement of the flag. One of our ideas is to have a large unfolding ramp, onto which we would mount the flag. Throughout the majority of the match, our ramp will be folded up, and is by far the highest point on the robot. When our ramp unfolds in the last 15 seconds of the match, the flag would be lower than the rest of our robot, and would be pointed horizontally. Since this is a temporary condition, only at the end of the match, would this be permissible?

A:No. That would be a violation of Rule <R15>.

See this one too: http://forums.usfirst.org/showthread.php?t=1746&highlight=flag

You’ll have to build a stationary attaching point so that the flag holder is at least as high as the arm most of the time.

it looks like if we can come up with a way to keep our flag verticalat all times even if it comes down with the ramp. like have the flag holder on a hinge and the bottom weighed down to keep it straight up. that would make it higher that the tallest point of our robot, assuming we are completly flat when the ramps are down. do you think that would be a violation or not?

This is still not clear. Even though it says to be 18" higher than the central mass of the robot, it is still subjective due to ramps deploying, moving arms, etc.
Every team technically will have a different design which may dictate the correct height/positioning of the flag.

This seems pretty clear to me. The flag should be above most of the robot most of the time. The holder needs to stay vertical so you don’t dump it out on the field.

Remember, this is for identification purposes so think about that when placing your tube.

Wetzel

Your reasoning for where it should be placed and the purpose, I understand completely. But based on past experience, inspectors are VERY technical about meeting the rules, even the flag positioning.
However, “The flag should be above most of the robot most of the time” is still vague.

We will be mounting it where “we feel is right”. If it’s not right at the competition, then we’ll just simply ask the inspector to suggest a better place. This is why we never somewhat permanently mount the PVC.

The problem for us is that our entire robot minus arm and ramp is only 12.25" above the ground max. If our ramp is deployed and arm moves which is just under 4’ in the starting position, it will certainly rotate and move during the match, thus not give our flag a permanent vertical positioning.
Cant see making a 3’ extension just for a flag.
We want to put our flag 18" above the central mass of the robot which is right above 12.25," but they may say “NO,” it has to be 18 " higher than our 4’ starting point, thus forcing us to create a huge “flagpole.”

In your case, I think making a dedicated flagpole sounds like the correct thing to do.

I think that I am confused too. We are building a low center of gravity bot that will max out at probably 3 ft tall. Do we need to put a pvc pipe that extends 4" 18" on our bot or does the flag have to be just 18" taller than our highest point?:confused:

“…top of the FLAG is a minimum of 18 inches higher than any point on the central mass or structure of the ROBOT…”

Sounds to me like you just need to put the flagholder at the highest point on your robot, and the flag will then be as high as the rule demands. The flag is at the top of a 36" tall rod, which fits into your 12" long PVC flag holder tube.

Thanks that helps me alot. The flag is our last step before shipping. So I have some time to figure out where to mount it. It can be in a corner of the bot correct?