How To Make A Powerful Coaxial Piston Cannon From Hardware Store Parts




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Sith ari: would heavier ammo work with this or are potatos the limit?

Jack Longlade: @NightHawkInLight I am thinking of creating this cannon and was wondering a few things that would be really helpful if you could answer. First is about the piston, have you build one with a hockey as the piston instead and how well did that work? Next question is about how much will it cost to create this type of cannon? I realize that you have the supply list posted but before I jump into this project it would be helpful i had a price range. It would truly help me if you could reply as soon as possible and thank you for the video. 

Darius Carroll: a friggin 3 inch long PVC pipe nipple, a whole lot of sex refrences jesus help me.

Brian Gross: Hi could you also modify the cannon so that it has a ½ inch barrel for for example blowgun darts? 

Neonninja1415: Try putting a Nerf Vortex pocket football in that tater cannon. I'm making a launcher for airsoft milsim and I think this would work great with it.

Rajon Ali: has anybody done this? How much did it cost?

Nintendo101maniac: Dang! Definitely would hate to get hit by one! I have a question though:If you'd put 2 blades that have been put together to form a + shape (removable of course, for loading, and so you're not stuck with only that option) at the end of the barrel, would it make it a spread-shot cannon?

Matthew Wessels: could i charge this to 100psi

Juan Kmaney: Hi Bud! Thanks for sharing with us. quick dumb question, I'm about to start building one of those, but I want use it for "bait caster" instead, so I know that the barrel has to be longer, and I like to know if I have to make the whole setup longer or just the barrel.... Thanks again.

chris platt: Is there anything that can substitute the gas vent tee caps? I cant find them.

Goldie Neko: would this work if you put confetti in it instead of potato? 

Darius Carroll: srry heard that wrong

D Smith: Will you see how fast the ammo goes 

WINSTON SMITH: More trouble than hair spray but better!

Idabus: Could u shoot a little foam nerf foot ball with it

DeadEye MC: what would happen at 100-200 psi

Blastin22turnips: Would this be able to be modified so it could shoot a high power blast of water?

04awdriver: Amazing tutorial. Very well done

Madison Harper: I see a lot of room for improvement on this design... I'll have to build it. Probably a solenoid dump valve for your rear end, electronic trigger, hoseclamps, arm brace, etc.

Gintoki Azuma: i have a question Will it put a hole in someone stomach if they get hit ?

Jim McFarland: Would a smaller diameter barrel work? I want to shoot golfballs out of it or would I have to wrap them in something if a smaller barrel wouldn't work

Mike Newell: Your air cannon is cool. I just made a big air cannon

BlueCro64: hey great video. I managed to solve the air leak problem with the rubber seal. Used a cell phone rubber sticky pad for the car, i added dust to make the rubber not stick so much, the soft rubber works good. The problem im still having is the piston does not open when the ball valve is released, it drops down after the pressure is released. i added a couple more lairs of foil tape and the piston is tighter but still have the same problem. Should i keep adding foil lairs or am i overlooking something? Appreciate your input.

Bob R: I just spent hours completing this cannon. I followed all the directions and specs as best I could. I have run into a huge problem..... Connected my bike pump, pumped it up like 8 times.... Turned the valve..... And all the air fired from the back of the valve????? Total opposite direction???? Now, this was all done with an empty chamber. Does it matter if I load the chamber??? I guess I will go get some potatoes... 

MadAndMajorGaming0: I need some help. I live in America and ive been on almost every hardware store website I can think of and even after multiple google searches I havnt been able to find a pressure rated 3" to 1-1/2" reducer anywhere. Can someone help me out? Preferably someplace I can pick it up at and not have to order. thx.

Don Green: Made one but when dry firing all the air escapes through the ball valve not the barrel. I've played with wrapping the piston and not wrapping it but nothing seems to work. With no tape on the piston I can hear it move as I tilt the cannon back and forth. Any suggestions to get it to work?

pippaknuckle: Waste of good potatoes!

jean paul Saliba: i need help the its not shooting followed instructions aig goes to the outer barrel but not inner barrel 

Arthur Hunt: AWESOME TOY. BET I CAN TRAIN MY CAT TO STAY OFF THE KITCHEN TABLE. .Not really.

BurritoBandito: Can I add this to the foam noodle rocket launcher?

Abraham Monroy: Could i have one Ford 5 bucks??

KraZer: Can anyone tell me how much this would cost? Need it for a 9th grade project

ramirezharrier: Man, I wish I was still in eigth grade and had time to do this stuff. I loved making the mini potato cannons and such. This looks really cool!

Morgan Smith: What could I use for as a substitute for the galvinized steel vent tee caps??

Steve Nottingham: That will give you a nasty bruise. Too funny. You have to much time on your hands,

MIke Wyllie: Love it

Kathy Freeland: Wow, why make something more complicated than it is in reality? Potato guns are suppose to be cheap, fun, and fail proof. Either way, the pipe is only rated at 40 PSI, so why make a piston? Just load a piece of pipe up with air and shoot it. But that's my philosophy. 

cantfoolme: why not just use a motorcycle fork?

Epicslayer77: What would happen if I loaded it with about a million paintballs?

owen banker sumner: how much did it cost to make?

Will Spears: I have a question. For the cannon, rather than opening the valve all the way, can't you simply press down on the nipple you filled it from? It should let enough air through to move the piston, they that will open the chamber and push the air through the barrel like normal.

Raymond Preblick: How does this bore size work with frozen bait bullets for surf-fishing? About how many yards could you achieve vs. a long rod.

Jeff Gardner: Thank you. 

sheenufilms: That's just a potato gun. 

ltshortcut: I'm thinking paintball portable mortar.

Carl Davidson: My grandson made it in two hours. Copied this plan... Awesome!

Richard Kinch: PVC pipe should NOT be used with compressed air due to the hazard of shattering into sharp shrapnel.

Chris Gebben: Ok on 6:51 I just found out my piston push in end is not flat how do i sand it to flatten it 100% (ish)?

mark22732: What kind of PVC is used here? The type for drainage or for venting your furnace?

mike evans: How far will this gun shoot??
Rating:
How to Make a Powerful Coaxial Piston Cannon from Hardware Store Parts 4.9 out of 5

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How to Make a Powerful Coaxial Piston Cannon from Hardware Store Parts