<R12> 72" x 72" Size Restriction


They can’t enforce a mechanical limit because of the home zone rule. Also, there are software limits. If the pots on an arm limit the movement to a legal range, it would be crazy for the inspectors to make the team fully expand it. If the inspectors ask my team that, i will state “Sir, we can’t make our robot do that, it simply isn’t possible with our software” or something along those lines.

I think it means to make believe you are playing in a 72 x 72 square test tube. The test tube goes from the floor all the way to the ceiling of the arena.

I think we can put this thread to rest.

I checked your math and you got it right. Then I considered the second case, in which the long side of the robot is perpendicular, rather than parallel, to the diagonal we’re considering the arm to come out on. I did the math for that, and it seems that if your arm is coming out of the center of the wider side, its maximum length is actually 54.82", a gain of about 5". Maybe this helps someone.


I think the max arm length will be based upon those who have a turret and can position the robot in a corner of the 72" square, and extend the arm to the opposite diagnal corner.

The issue then becomes interesting when the turret rotates, but that will be for our programmer to figure out!!!

oooh crap…

There goes our arm design! :frowning: I feel really bad because it’s my job to be up to date on the rules and I assumed that this rule didn’t apply to arm extensions. oooooh. We were finishing the CAD and making parts too. It’s going to be a looong weekend as we rethink the arm design.

crap crap crap crap crap


FYI…this includes bumpers too…


can you provide the link to where this question was answered?

  • Bochek

EDIT: found it… http://forums.usfirst.org/showthread.php?t=1121 I agree that this is then possible, and man does it save my @$$