Building an air powered projectile launcher. This thing packs a punch! 

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One of the most direct and simple air cannons I have seen. Thank You!

NICE! But please remember to always load it BEFORE you pump the cannon up. So you don't lose a hand or eye.

Excellent design. Practical..Some of the best toys I ever had I made myself.Some things you just can't buy.Thanks for sharing.

Very cool! Thanks for sharing.

You braced this pressure vessel against your femoral artery to fire it. Although this feels like a natural position, its the worse possible place to put that. The construction of a PVC pressure vessel should not be trusted with your life. I would advise using a U bend to place the pressure barrel under the barrel and adding a skeleton stock, or make a protective housing (Butt Pad) for the pressure vessel that is purposeful built for the protection of a blowout against your body. Its just not worth the risk....

Simple and affective. Nice work!

I would attach a small diameter PVC pipe to the barrel underneath. Put a cap at both ends, the top end being removable. That would allow you to store a ramrod to help you load the bean bag. Also you could add a second tube that would allow you to store your CO2 canisters.

Very well done. Thank you.

Great job, simple and very effective! Really enjoyed your video.

Good job there well done.

GREAT JOB!!

You could also use a dowel rod (Curtain Rod} to load your throw bag like a muzzle loader rifle. Still keep your air stem on the end. Good Video!

Very cool, I’m gonna build one for my antennas now

Good job, what a fun build.

Great Video , Really clear and like the safety point, never know with some projects, Thanks

Well done! Have any photos of the air valve install? Have to consider this one - looks simple and effective. Most bikies (like me) have a bike pump that has a psi indicator on it. A few pumps of the handle and you have the same thing. Fun project to try - thanks!

great job on this !!! saved to my favorites.

Maybe spring load the handle of the valve and make it a push-release trigger so it opens quicker. I know you do it pretty fast but a spring with the right stiffenes would do it even better and gain a bit more moment of blasting it. Obviously you are very good and will find a way to design it right.

great project.

You could go to schedule 80 and mount a pressure gauge on the air chamber and get more power. This is your typical potato gun or on a bigger scale used for pumkin-chunkin . Nice idea on the rope. Thanks for the share. :O)

Love it.

Thank you a lot, this video helped me find the solutions I was looking for.👍

Awesome video tks

hi there...... great video...... ive been using a tree sling shot for 30 years.... i get em up to about 100 ft..... im making one of your genius shooters ASAP....!!!! THANK YOU

That was great.. You crack me up....

COOL BUILD

Bravo .........spring for trigger......cheers

Awesome.

Awesome video.....I am going to try to build one😊

Arborists use those "throwbags" as you also said. See SRT climbing on RU-vids. I like your air cannon-potato gun which I could suggest you charge using only air pressure from a compressed air cylinder charged from a gas or electric air compressor which would be a heck of a lot cheaper than using CO2 cartridges. But some use an airgun like that to shoot the weight into the trees or you can use the techniques they use to pitch the weight up by hand which takes practice.. I know... or even use a piece of PVC and attach rubber tubing or bands to pitch the weight up high like a slingshot which is very practical. The throw-line of course doesn't have to be expensive but fence alignment line or string is strong and at any length and cheap at Home Depot which is what you have looks like. One more thing, you can keep your line clean and off the ground if you use a 5 gal bucket or container like arborists (tree cutters) use but that may be overkill in your case but a bucket is perfect. Check this out. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vGoH9B9l9Xc.htmlsi=NzFrAp3h7dAzL4LS

Enjoyed your video! I made one with the butterfly valve, last night. The butterfly valve I bought is too stiff. I am buying the gas valve you have there. Gonna cut out the butterfly valve. My gas chamber is a 4" with a reducer to 2". There I drilled a hole for the air pump valve. I am anxious to shoot it. My barrel pvc pipe 1 1/4" with a fishing reel on the barrel. Best of luck. 73" KD4MAN

seriously seriously effective job my man!.

Im doing this for a school project and it was very helpful!!

glad nothing went south........great build sir

Simple equation: P1V1=P2V2 P1= pressure in CO2 cartridge(psi); V1 = volume of CO2 cartridge(cu-in); P2 = Pressure in pressure chamber(psi); V2 = volume of pressure chamber (cu-in). Nice project.

You most definitely are smart enough to figure it out :) I feel as though if you can do the research to make this, if you were be able to be given the equation and a simple explanation I have no doubts you’d be able to figure it out :) - from your local grad student in astronomy and Astrophysics :)

LIKE THIS PROJECT

Braided fishing line. Hose clamp a Zebco reel on the tube. Open the bail, fire. Attach antenna rope (That yellow rope is overkill) to the far end, and reel it up and over and back to launch side. Attach wire, and pull it up. Even just the braided line should hold a wire in a temporary setup. 50 pound test should be enough for a lighter gauge wire. This way, a secondary rope is not needed. Just shoot from far end in the direction of operating position. I have a spool of American Fishing Wire (Look it up) that I use for antenna remote ops.

your house is like my house, constant noise from bug smasher planes. it never ends, the droning of those engines.

I have an air antenna launcher. It's crazy fun!!

Awesome

I like your simple launcher better than the one I recently built using a 24 volt sprinkler valve with a trigger switch and battery. I also have a Zebco fishing reel connected to the firing end with a projectile made out of a 3 inch length of pvc pipe and ends. It will shoot the fishing line over 150 feet straight up. The fishing line is connected to a larger line and pulled up. Sometimes the fishing line (10-12 pound) breaks. I pump it up with a compressor. The co2 cartridges sound much better (Thanks). I am building a horizontal loop antenna with two full wavelengths on 160M (1150 Feet of stranded #12) and 100-125 feet up on all four legs. 73 Dave

Thanks for the quick response.

Neat!

thats sick. I have a massively overpowered potato cannon and this shoots pretty simalarly. anyways, that. was. awesome.

I used schedule 80 for the pressure tank. Two 90 s and a couple short pieces of pipe to make it a U shape to reduce the length. And also put the shrader valve to the front. Laying the line on a piece of canvas helps with tangles.

We picked similar channel names, and similar designs for our air-powered PVC launchers. Yours is great, I really liked watching it launch the throw weight. I was curious how it would perform with the air gap caused by the rope hanging outside the barrel. Looks like it didn't have an issue with that! Nice build Mike.

I made a paper rocket launcher in much the same way. I got told off (by my wife) for landing the rocket on people the other side of the park. I used my cycle track pump to get the pressure as that was free.

thats pretty neat needed one of these years ago for my property but a dirty lawyer screwed us out of our mothers 20 year old deed.thanks for sharing

I LIKE THIS IDEA ! ! oh hubby, you need to make me 1.

I have made many of these a good way to hel p protect your self is to wrap the air chamber with duct tape or cloth tape. It will provide a small amount of protection.

Too cool. Better than school

I would be interested in a video showing your air cannon shooting plastic bags (walmart shopping bags) to stop intrusive drones.

Awesome air gun. I have one suggestion. Have a safety pin rigged to go thru the trigger handle to keep you from blowing it into your face while loading it... I watched you loading it with the release handle waving back and forth around your legs. You could put your eye out kid!! Haha...

Man I really enjoyed this

Very good project. I built a similar Water Balloon cannon. I used a automatic (low voltage w/9v battery) sprinkler valve and a push button switch. The solenoid gives you a quicker valve opening. I plan to use your design for my through line launcher with the sprinkler valve mod. I'm not very tech savy with video, so maybe you can show a video of this mod. I have found this to be very useful. I like the Co2 design. I've use a 12v battery operated car tire pump so I can launch balloons from my boat. With balloons you need to pour about a cup of water in the barrel as a sabot first to get a air tight through without busting your balloon. With balloons about 60 PSI is the max without busting the balloons. Balloons need a 2" barrel. I'll be watching for your mods.

Sprinkler valve is the way to go opens up way quick and faster. you can get ones that have a manual open.

I enjoy surf fishing. While watching your video, I started to think about how this may help me launch bait out further. The design appeals because it's so compact. Q: How many feet would you estimate your cannon could launch a 3 oz. lead sinker? Kudos, you're a talent -dude.

Pressure in vessel 1 X volume of vessel 1 = pressure in vessel 2 X volume of vessel 2 is the equation you’re looking for.

Really cool video I want to make one to shoot bait here in New Zealand! I would also like to use the gas canisters that you use co2 but can not find the adapter to use! Could you point me to where I can find the correct adapter to use to charge the air chamber please and thank you!

Next time put a tarp on the ground and place the line on top of it to prevent the grass from slowing line down. Pretty cool. KB3NG

Good job! First time making something and my friend wants a hot dog launcher lol.

You may it helpful to dose the inside of the firing tube and the throw weight with spray-on dry silicone lube. I think 3M make and sell it over where you are. If you use a small sock for a wad, give that a shot of the lube spray as well. Don't pack the sock in hard or it will slow the launch.

Very cool! Somebody on the FB WFD Group linked your vid after using his for the event. I think I'm going a different route, but enjoyed the process. 73 de K1NKX

Could you use a retractable reel from a fishing pole? That way you can reel it back in?

Ok update on antenna.....I have seen people bury the wire in ground.....cheers

Safety sandals on 👍

I am planning to build such a gun and I would suggest to use a shorter but wider compression chamber and a built in pressure measuring thing. And maybe a simple pop up metal piece (frame with sight thingys in it) for aiming. The shorter chamber would make it look cooler (imo) and would have a better stand on the ground. But keep up the videos- great stuff, one can see you enjoy this very much 👍

Oh...im gonna go get my box of compressor parts and vakves, etc out and hopefully tomorrow build your gun with my changes for sending seed all over my yard for the birds. All I think I will have to do is use a Styrofoam plug under the seed with a epoxied on piece of wood to keep from blowing holes in it and a a screw on cap at the business end with 1/2" fence wire...out goes the seed and I don't have to chase the plug. We shall see!

Where can I get the CO2 adapter? Cool vid man. I'm going to build this and launch bait into the ocean for fishing

Awesome launcher. Cn I make the front barrel shorter like half the length you have in the video?

Could use a safety relief valve. Or a regulator on the input for CO2 cartridges.

Compressor guages are very inexpensive. Some have longer stems, some don't. A short stem can have a piece added. My point...get a small compressor guage with a 3/8" OD nipple, drill a hole in air chamber, thread on a nut, curved washer and proper o-ring/rubber gasket...slipp it through and do the same on the other side. A bit of the right silicone (that doesn't eat rubber) might help a bit. Now you know the air pressure at any time and can, through test fires, know what pressure goes to what height. AND...you coukd add a compressor safety valve as a Just-In-Case and a knob style compressor pressure valve in place of the valve stem with marks at learned levels and quick fill to what you want double check on the guage for safety and if all else fails you have a safety relief valve as well. REMEMBER: SAFETY THIRD...I MEAN FIRST.

I would add a Tee for the schrader valve

You should try an electronically controlled sprinkler valve instead.of the ball valve it opens.in a fraction of a second and only use 12v it will inprove the your cannons performance drasticly

Why not a paintball co2 tank with a regulator so you know how much air is in the tube?

Where u find your valve stim at and what size ball valve is it ?

good video. put a gauge on the tank

Interesting. To what pressure would a second charge from the same once-used gas cylinder charge your gun's pressure tube? I was immediately curious about that, so please respond. Thanks.

Hey man how are you, where can I buy that co2 adapter

Thanks, I've been looking for a simple design for a launcher and it looks like this will do nicely for out POTA activations come spring. 73 de VE3SNW

If my chemistry is correct and to figure out pressure & volume: P1V1 =P2V2 If you know the pressure of the CO2 cartridge and its volume and you know the volume of the chamber, just algebraically solve for P2 to get your pressure. P1 =Pressure of cartridge, V1=Volume of cartridge, P2=Pressure of Chamber, V2=Volume of Chamber : There for (P1 x V1)/V2 = P2

I was just curious what adaptor you used to connect the co2 cartridge?

Them arenot safety glasses, first fireing and you put stem into your hip was wondering we going to see something interesting, utube line bag throwing techniques, it quite easy

What is the max air psi should I put in this gun

Please load the beanbag/rope first then pressurize the chamber. That way if you bump the valve your face is not near the muzzle.

Maybe load the beanbag b4 you charge it..? Pounding it on the ground while pressurized just feels like an accident in waiting.

My simple comment is that you always want to treat any type of launcher - whether it be pneumatic or combustion - as if it were a firearm... Loading the launcher's BARREL in this video AFTER you have pressurized the launcher's CHAMBER is a really bad idea, because there is always the remote possibility that you could accidentally bump the ball valve - causing an accidental discharge of the pressure in the chamber. And that loaded 'throw bag' exiting the barrel at several hundred feet per second would have enough ballistic energy behind it to cause serious injury or even death to whoever it hit.

The larger your air chamber the more powerful it will be. VOLUME is a good thing. Just like the larger your sprinkler system piping is the better the volume of water pressure. The barrel is a very good size and should not be changed.

Wouldn't put that thing anywhere near my head or nuts with that kind of pressure but that's just me.

Can you post the link for the tire stem that you use?

Try a CO2 fire extinguisher. Chicago powerline fishing style.

There is always a reason for why the HD stores don't have butterfly valves but only ball valves and press valves. Why? It's easier to manufacture butterfly valves than the ball valve (instead of the ball with a hole, it's a round flap door). The reason is the ball valve is much safer than the flap valve (butterfly) under pressure. The only exception is when the butterfly valve is huge (0.5m to 50m diameter and sometime 0.5-3m thick steel... Dam) where a little bit of water leaking is no big deal).

How long does the throw bag last. I got 3 shots with a 16oz throw bag before seams split out.

Hi there I love your design but I have a few questions. Firstly I'm in New Zealand so our PVC terminology might be slightly different than yours. I'm looking to make one of your designs to use it as a bait cannon. Now your design around your brass valve. Both the brass nipples are threaded both sides right? Then your Expanded Pvc bit that connects to the nipples are both Threaded female couplers? Was that bought like that or did you have to make that part? It's the 1.5 inch bit that is connected to the brass valve. Do you know what that is called? Then your 2/3ft air chamber slots into that bit which you then glue right? Plus the "barrel" bit on the other side also glued in? Many questions sorry.

Looks like Darby, Ind.

Nice just install a psi valve on it

Where did you get the bean bag? Nice job, OM.

I would suggest a pressure gauge.