[EricH]

Originally Posted by mjv5720

Since this years robot requirements rely so much on measurements, I was curious about the frame perimeter.

Here is a link to pictures of our robot: http://imgur.com/a/pu6jp

When measuring the frame perimeter, does it have to be an exact rectangle? By that I mean can it curve in a little bit. Right now as you can see our robot's front two wheels aren't as thick as our tank treads and so if we put a string around it it has a more trapezoidal shape to it. Does that matter? Or should we be measuring it from outside edge of the tank treads all the way down the side of the robot?

It is a convex polygon. No concave, no curve in, nothing.

Now, there's an easy way to make it rectangular: Take a piece of aluminum of the proper length and mount it in front of the wheels, sticking out to the proper width to match the tracks. Bingo, rectangular frame perimeter. (You'll need to figure out support, though.) You'll want to do the same at the back, behind the tracks.