I am coming up with a way to fold our robots fork and thought, could I use rubber bands that would break away? what I mean is, my using a motor and gears to lift up the main part of the fork, could I attach the sides to stand offs with rubber bands. than, when the main part of the fork goes down, the bands would snap and the sides unfold.
if not, is there a way to make a hinge in vex? last year was my first year so I don’t have any experience with folding, so I don’t know if there is a way to have a hinge system.
THIS IS AN UNOFFICIAL RULING
I would suspect this would be legal, as long as it doesn’t violate others rules (first one that comes to mind is <G1>), however referees would give you a lot more scrutiny when making rulings
If you wanted to get an official ruling, please post in the “Official StarStruck Q&A” channel.
The snapping just can not result in any parts being left on the field. Also there is a hinge part
As long as the bands don’t actually detach from the robot completely I believe that it would be fully legal.
Tabor beat me to it 
No such part of the robot may be intentionally left on the field, even if it’s only a few square millimeters big.
As far as I know, you can have the rubber bands break on purpose. As long as you have some way to keep the rubber band from falling and being left on the ground, you should be fine.
I’m not sure exactly what you mean by hinge or if you have some other purpose, but VEX sells hinges. You can get them here. It says they are sold out right now though, so you might have to wait.
Good luck.