pic: T-Shirt Launcher, still needs a chasis

[ubermeister]

Originally Posted by EricH

As for "How could a T-shirt jam?", most launched T-shirts are wrapped somehow for distance reasons. Usually, it's a rubber band or three. Guess what? Said rubber band or other wrapping has a much higher coefficient of friction than a T-shirt, and may stick in the barrel. The T-shirt then sticks too, and you suddenly have a jam. Now you have pressure that can't get the shirt out and can't go elsewhere. Your best bet in this case is to drain pressure immediately and use a stick to remove the shirt, but sometimes, it takes care of that for you, in spectacular fashion.

This means that your cloth T-shirt is able to hold more pressure than your welded 3/16" thick pressure-rated plastic. Just sayin...

I built an airgun (2, actually) and have had the projectile jam in the barrel. The air just leaked out of the poor seal between the movable barrel and its seat. And that seal is (I think) much better than this one. And that was at 120 PSI.

I'm just trying to say that you should be more worried about the chamber, and that your very awesome airgun does not need a complete redesign.