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Multiple Shot Cannon

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Multiple Shot Cannon

Unread postAuthor: splttingatms » Thu Feb 26, 2009 10:24 pm

Hello fellow makers,
I just built a t-shirt cannon using a design from Make: Magazine for my school pep assemblies. I'm trying to come up with a design that can shoot multiple t-shirts with one pump of the tank.

I had a multi-tank system with a ball valve for each tank, but the system would be complicated to explain to officials who would be use it. The operator would have to open both valves when pumping, then close them, then open one and launch. then close and open other, launch again. Is there a simpler design?

I uploaded a picture of my design.
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tshirt cannon0001.jpg
First design for multi-shot design.

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Unread postAuthor: trigun » Thu Feb 26, 2009 10:33 pm

Maybe just make a large air tank and a CO2 regulator would instantly refill the chamber.
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Note epoxy cure time very important barrels are hard to remove from the wall
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Unread postAuthor: splttingatms » Thu Feb 26, 2009 11:09 pm

Okay I looked up compressed air regulators. If I read correctly, they limit the output pressure at fixed or variable levels. My only concern is my current prototype (only has one tank) is being used with only 50-60psi. Would limiting output to 40 leave enough air in dual tank design for two shots?
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Unread postAuthor: Demon » Sat Mar 07, 2009 11:17 am

Dont make this, the instant come of air will open the sprinkler valve. I tryed this and it did'nt worked cause of that.
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