This is a air pressurized cannon. Pumped by a bike pump, air released by a electric sprinkler valve. The PVC tubes are changeable for what you want to shoot. I shoot marshmallows, apples slices and t-shirts. The longest distance I've gotten is 180 feet. All depends on how much air you pump into it. So FUN!!!
Guys, the comments aren't supposed to be bragging about your air cannon or telling him to change his. Does a guy who shot marshmallows with the president in the white house need any pointers? congratulations on the great build
If you want it to go farther you need more pressure. If your confident that you primed/glued your joints well then you can easily crank that up to 120psi (get an air compressor and put that bike pump away). You will also need denser projectiles. Potatoes work well, so do apples. If your trying to huck a potato you might want to invest in a rifled barrel (you can get those online).
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Have you tried to make a step by step on how to build one?
Joe
sorry
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