FIRST air cannon robots PVC??

[Cody Carey]

We have had our air tank pressurized to 80psi and run the end cap into a wall at about half speed of our robot (6-7mph)... It was an accident, and as soon as it happened I was sure that the tank would explode, but nothing seems to have come of it. The tank also tends to be manhandled when it is taken off of the robot, and that has never had an ill effect. We test the safety of the tank by isolating it from people and pumping it up to 110psi, which is 30psi higher than we use to actually shoot the t-shirts and footballs.

The main thing that I would say be careful about is what glue you use. Someone in a physics class at our school tried to emulate our cannon, and used glue that wasn't rated for pressure... he broke a window out of one of the doors.


Sched 40 pvc holds up fine for our uses, and we have never had a problem.