T-shirt cannon help please!

[Chief Hedgehog]

That looks like a very nice soccer stadium but what are all of those weird numbers and lines on the field?

Originally Posted by BBray_T1296

Ours is much smaller in length than the post above (that robot failed inspection I am sure )

It is about 4.5' long, and is shoulder fired. It looks very much like a bazooka and very much so, as it is one. I don't actually know how far horizontally far we can fire, but we can fire t-shirts over the top of this stadium (we hit the bottom press box window once) from the track at the bottom



I don't know if this picture will show:

[stens987]

If you scroll down you will see video of our prototype. We have fancied it up since these pics/video was taken and have added pistons so that it can change the positions (30 and 45 degree angles approx.). We use PVC cartridges, each containing a tightly wrapped and taped t-shirt. They are then gravity fed to the shooting position, locked tight next to the 120 psi confetti cannon integrated solenoid and tank. Once the shirt has been launched, the cartridge is unlocked and a piston knocks it out the side, making way for the next cartridge to slide into place.

http://www.cmhsacademies.com/engineering-academy.html

[stricker.josh]

Don't use sewer pipe. It is not rated for pressure. I would use schedule 40 PVC at least, and wrap it in packing tape (the kind with threads) to contain shrapnel in the event of a failure. PVC will decay after a lot of UV exposure, so don't leave this thing outside.

[Chris_Ely]

Originally Posted by stricker.josh

Don't use sewer pipe. It is not rated for pressure. I would use schedule 40 PVC at least, and wrap it in packing tape (the kind with threads) to contain shrapnel in the event of a failure. PVC will decay after a lot of UV exposure, so don't leave this thing outside.

Or use materials that are actually rated for pressurized gases. I highly doubt tape will do much to contain the force of a burst.