Compressed Air Battery

A simple example of how a compressed air battery works. This one, of course, is not very efficient.

Topic by bubal   |  last reply

What infomation are needed to calculate fps for an air canon? Answered

I know that fps is speed unit, and I'm trying to calculate the initial speed(or the power) for my air canon. Information I have: 1: value of the air chamber 2: psi 3: diameter of the barrel 4: length of the barrel 5: diameter of the air release valve will those information be enough? How to calculate fps or power from information above?

Question by    |  last reply

Another car that runs on fresh air.

Here's another chap with a car that runs on compressed air.He's got more potential than past attempts, though - F1 engineering background, large backer, neat trick for extending range.The video and Previous BBC "airing"Canadian news articleCritical article from Oil Drum (Australian energy site)Oil Drum: part 2Air Car siteEDIT (MORE REFERENCES)Another BBC articleMDI Engineering site (they make the engines)Tata Motors (who plan to build the car)

Topic by Kiteman   |  last reply

Compressed air engine help?

My friend and i are making a compressed air engine strong enough to work lawnmowers or better yet, a small car. Does anybody know any equations for calculating torque or RPM's? We are somewhat basing it off of the Airhogs air engine but better. Also, does anybody think making it out of PVC would be a good decision? or aluminum? I don't know if it will make lots of heat since there is no igniting of gases so i think it will be safe to use PVC for a lighter engine so more power can be used for moving. any thing wrong/bad about that?

Question by Lego man   |  last reply

Carbonate drinks with compressed air? Answered

So there are a lot of carbonators out there, and they all cost in the range of $50-$100, which is a lot, but the real cost comes form the co2 cartridges. So I was wondering.... why not just use compressed air? sure, it would take longer for all the co2 in the compressed air to reach equilibrium between the water and the air, but i do believe that if you let it sit for long enough, it would work. other gasses would also diffuse into the water, like oxygen, but since gasses are hard to taste, it shouldn't make a big difference. (co2 actually forms carboxylic acid, which tastes sour, but i can live with it not being exactly the right taste) all i have to test this theory is 115 psi from an air compressor... would this be enough?

Question by biolethal   |  last reply

building a small compressed air

Hello,Just wondering if anyone has seen an attachment to a CO2 cartridge, where you can spray like a compressed air can for a computer?Where this activates when you press on a tire.Has anyone seen an attachment where you can press a button and get a stream of air like a compressed air can?thanks

Topic by gregdove   |  last reply

how to make an compressed air powered bike?

Plz tell me about d price of a rotary air engine n itz working

Question by abhi_igi   |  last reply

How do you measure the Cubic inches of a curved tube or pipe. Like a 4" PVC Elbow? Answered

 I have an air cannon and want to know how much it holds

Question by   |  last reply

Compress propane gas? Answered

We are in the process of recycling rubber and waste tyre casings. One of our by products is propane gas. I would like to know if I can use a normal air compressor motor to compress the propane gas into a propane gas cylinder?

Question by Richray0987   |  last reply

How to use an Compressed Air tank?

I am new to compressed air tanks. I need some details about them. (For an air car actually) 1. How to refill a 4500 psi air tank. 2. How do I know the pressure of air comming out . ( Most Important) Can anybody please provide me a schematic drawing on how do I connect the air tank, the pressure gauges (Gauge 1. which shows the pressure and amount of air in the tank and Gauge 2 which shows the pressure of air comming out)  and the compressor with the copper tubes. I read on a site formula for power of an air engine is HP= PLAN / 33000 where P. Mean effective pressure in pounds per square inch. L. Stroke in feet. A. Piston area in square inches. N. Number of power strokes per minute. How do I get value of N for the formula. Thanks for any help.

Question by flyingdutchmen1659   |  last reply

The Best Compressed Air Weapon EVER!!!

This Compressed Air Carbine I mad is so fun to shoot you should try to make one!!! It is easy and cheap to make, fun to shoot, and you can shoot anything out of it!!! I like this Compressed Air Carbine because if it's ability to shoot anything. Iv'e shoot Paintballs, Airsoft BB's, BB's, Marbles, Fishing Weights, Arrows, Marshmallows, Grapes, Sand, Rocks, Water Balloons, and Nerf Darts! I love this Carbine!!! Right now i'm working on a mod for it where you have a fishing reel on he side of it and you can shoot your line out of the Carbine instead of having to cast, and your line goes really far! Please tell me what you think about this instructable, and what can I do to improve the Carbine. PVC Compressed Air Carbine

Topic by clobber24 

clay or wooden compressed air canister

Had the idea but don't know if it will work don't know if clay would hold the pressure it would be used to hold compressed air for mechanical uses to power primitive machines also if it would work what do you think the psi rating would be if not wood or clay what other primitive material do you think i could use

Topic by Pokemon03   |  last reply

air tank question? Answered

I have a medical regulation oxygen cylinder it is a dark green i am wondering if i can turn it into a compression cylinder by drilling into it would this compromise the tanks integrity please respond. sorry if i left anything out, fidgety2

Question by fidgety2   |  last reply

what can i use as a portable compressed air source for my homemade pvc paintballgun?

I saw lots of instructables and decided to make 1.... but was limited to non portable air compresser so cant play a paintball fight or something:S

Question by mohammedbsat   |  last reply

Building a custom shaped Compressed air tank

Hello, am looking into the possibility of building my own paintball markers, and wanted to do a custom way of using the air system, compared to most markers. I was thinking either a square shape, but after finding an article that was talking about water and gases tanks and why they are build cylindrical, i realized that maybe that might not be as easy or practical. another possible idea would be a flask shaped tank, but for the design am looking at it would need special commendations, none the less I wish to see if something like that could be possible.

Topic by Mac yet more irish   |  last reply

whats the best size container to compress air into? Answered

Thanks for the advice on my earlier question guys but now I'm wondering what the best size to make my tank. Just so everyone knows I'm trying to improve a pneumatic  air soft gun I made a while back. I just want to know if a really small canister, like one with an aria of 12 square inches for instance, could launch my air soft bb just as fast as a 100 sq inch canister if they both had the same amount of pressure inside. If not then whats the best canister size in between the two to launch my air soft bb. Thanks for the help : )

Question by inconceivable1   |  last reply

Problem with compressed air, ping pong turret

Hello all, I am in the process of making a ping pong ball turret powered by an air compressor, I’m using a solenoid valve to trigger the air electronically.i have had some exact diameter steel pipe milled out which is 250mm, so the diameter of the balls are 40mm and the diameter of the pipe is roughly 40.5-41mm. And I’ve sealed off one end with a tapped out hole for a nozzle fitting. My compressor goes up to 7 bar -around 100,psi -. Do finally to the topic 0f my question, i have tested the firing of the balls by firing 7 bar through an compressor gun, and to my surprise it didn’t fire across the garage like I expected, instead it made a very high pitched noise and the ball vibrated inside the tube, eventually the ball would rise up the tube and eventually speed up towards the end of the tube but still only launched at most 1 meter. Any help on how to fix this problem would be excellent. As I expect 100psi through an exact diameter tube would fire the ping pong ball very far. Feel free to ask any questions if I haven’t been detailed enough. Cheers

Question by bashmore00 

Valve that shuts off once a set pressure is reached?

For something I am in the process of designing, I need a valve that can be connected to a high pressure source and will allow the gas from the high pressure side to to flow into a sealed container on the other side until a pre-set pressure is reached. It should then shut off. The system used to do this should also be able to handle a very high pressure spike (possibly even the type of compressed pressure wave generated during a super-sonic combustion / detonation) on the sealed container side. If you can provide a diagram or the name of a type of valve or even just a description of how this could be done it would be appreciated. No computer controlled stuff please. ##################### The answer I have discovered is to use a regular diaphragm-type pressure regulator. ######################

Question by Jaycub   |  last reply

Quick Release Piston Blowback?

I have put a great deal of money into constructing a 6" air launcher, but to my dismay things didn't quite go as planned with the valve design.  I have attached a picture below of the valve's design.  The idea is that when the air is released from behind the piston, the piston should move back allowing air to exit through the 5" pipe.  The valve successfully holds pressure, but fails to fly back and I believe this is a result of the piston and barrel it is up against being equal in size.  I wouldn't have designed this in this way, but the large schedule 80 pvc tee only allows 1/4 inch around the sides of the piston at best.  I am curious if anyone has any ideas to make this piston valve work, I really don't want to pay 200 dollars to get a butterfly valve on it and would greatly appreciate any ideas that may make this work.  I promise videos of the beast once I get it up and running.  Launching 6" objects using up to 80psi will be a blast, literally if I ever get crazy enough to bring it up that high.  

Question by   |  last reply

Is there a way to convert a CO2 air gun to work with a compressed air tube?

I have a CO2 air pellet gun and would like to convert to a compressed air tube....Is this possable? I hope this does not break any rules for the site. If so I am sorry, please dissregard and let me know. Thank you. Grant

Question by P-grant   |  last reply

How can I make an air tight seal using epoxy

I use epoxy to seal all the joints on my compressed air canon. This works fine on all the joints except one where a small air bubble always makes an air leak despite me recovering it with epoxy resin. How can I seal this off?

Question by TizzDoggo   |  last reply

Compressed air can - How to make larger one, refillable?

Hello! You know those compressed air can for cleaning dust form electronics and computers. They are working well, but if you use them a lot they become pretty expensive. For heavy user's alternative is to use compressor. They are not so expensive any more, but they are loud, heavy, large and not so practical to carry with you… So, after take in consideration that written above great thing would be to make reusable, larger, compressed air can. Something simple to use, some on/off leverage and small nozzle, and also refillable - fill it with that compressor which is heavy and loud. Some manometer would be nice, just to know how much air is inside. That "can" should be larger than Do you have any idea how to make it? Please share details, ideas, plans, other help… Thank you in advance! Best to all!

Topic by davor07   |  last reply

Has anyone tried air power?

I have been experimenting with compressed air. Currently I am working on a compressed air turbine. So far it so promise. I'm running a 18" x12" casing. It turns about 10,500 rpm and runs through a gear reducer to provide torque that I need to run a generator. I have a small screw compressor to refill the tank.

Question by alvin9861   |  last reply

Thickness of compress air tanks, and max pressure of brass fittings?

Who here knows about compress air? Regarding about the tanks in standard air compressors if i'm ryt (70 to 90psi) how thick is the tank and is it stainless? also, standard brass fittings? wat r der maximum presure?? i need to know these for safety before i can proceed with my proj, if im correct presure tanks have d tendency tio explode. and metals shatter. so... i dont want to die yet... can anyone help?

Topic by No-Shi-De   |  last reply

Airsoft minigun

Here is an awesome easy airsoft gun I built from Nighthawkinlight. link:http:// Highly recomended!!!! I built it for about 30$. My plan i am working on right now is to use the same compressed air method to build a paintball pistol with a 8 cap mag, its working out great so far. Here are the stats for the gun pictured. PROS Compressed air powered!!! (to me this is awesome so i dont have to spend $ on Co2, or a battery that you need to charge) great range 250ft! lighter than it looks high rate of fire 50/ sec sturdy design very accurate CONS uses ammo up quickly kinda large takes a while to pump PLZ RATE AND COMMENT PLZ

Topic by Football viking boy   |  last reply

what happens if I put compressed air instead of N2O in my car? Answered

I was thinking, if I put compressed air in the intake coletor, the improve of power ins't the same? as the nitrox sends nitrogen to make the comb. chamber cooler, and oxigen to burn the fuel, wich is the same elements that had air, the effect doens't had to be the same? thanks for aswering. have a nice day!

Question by maurice1993   |  last reply

Airsoft Tension/Compression Mortar

I've been looking for a way to make an airsoft mortar which uses either tension (by way of wrist rocket or similar bands) or compression (by way of a spring). I'm thinking it'd be similar to the trip mine here: anybody could give me ideas or post an instructable, that would be great. I don't want to use air compressors or light anything on fire, because it's just not practical mid game (that would also be just a manipulation of a potato gun). I also think compression or tension could be a lot safer if done properly. Any ideas on making shells to hold airsoft bb's and properly disperse them when fired would be great too.P.S. I'm totally willing to offer my input on the situation if somebody else wants to collaborate on such an 'ible.

Topic by spectral08   |  last reply

DIY Air-Powered Moped

This custom moped runs on compressed air to get you across town with no pollution and no noise. Just make sure you're not going too far as the range is only 7 miles and top speed is 18 mph.Still, a cool idea to work from. Link

Topic by fungus amungus   |  last reply

How to compress air into a hollow solid without a valve?

Hi  Really need some help with this one, have searched everywhere but cant seem to figure it out. I know there is probably a very easy solution i'm missing so please help. Basically I want to compress CO2 at around 80 psi into a hollow metal. I have drilled a micro hole and created an opening (about 2mm radius) into the metal. My problem is after I compress the CO2 in there how do I remove the compressor nozzle and seal the hole without the CO2 escaping.  The metal is small and there is no place for a valve. Is there such a thing as a self sealing removable valve? Or could I use a valve  with two openings and pump liquid metal (that would than solidify) and seal the hole so I can remove the compressor?

Question by cnaidoo   |  last reply

Manual air compressor

I had this idea just drop on me a few minutes ago and I was wondering if anyone could give me some feedback on if something like this would be feasible or not. Also if anyone thinks it's a good idea just go ahead and build it because I dont have the tools or space for something like this in any case. The idea is to have some sort of tank with a large internal volume, cut it of at the top and arrange a sort of secured piston with a heavy weight on top, attach it all to a frame so that the piston stays level and secure. The piston with the weight on can then be connected to a multi-stage pulley system to allow one to lift the  heavy weigth, sure it would take a long time but for a manual air compressor it should be feasible Then at the bottom of the tank one would have a high pressure release valve with some sort of standard connector for transfering the compressed air to a sort of pressure tank for use. I never saw anything like this before, although I'm sure someone must have done it at one point or another. So what do you all think? Any input?

Topic by wolty   |  last reply

How to build an inflatable "brain" costume for stage - seeking ideas?

Hi all, a friend of mine asked me to help him design and build a costume for a stage show he's doing; he will be wearing a monster mask and needs an inflatable "brain" to suddenly inflate (note, he changes costumes every 5-10 minutes during the show so it's something that needs to be fairly portable and easy to change into). We tried using CO2 canisters with balloons, a good effect but not nearly big enough. I'm thinking about some kind of air pig with a valve that he can clip a connecting hose to. If anyone has done anything like this or has a good recommendation I'd love to hear! Many thanks, DAZU

Question by damianzuch   |  last reply

Amazing DIY Air Gun. Powerful

I made this air rifle with plumbing parts ....

Topic by bubal 

Air Compressor/Vacuum Pump

I have a theory: You have your supply of compressed air. You connect that by hose to one branch of a y-connector. The other branch is connected to a hose that goes into some sort of fluid that you want to move from one vessel to another. The trunk of the y is your exhaust (in theory). So now I give, say, 15 psi out of my air supply and that shoud drag my fluid out of its vessel through the y connector to the destination of my choosing. Would that work?

Topic by flagrantfouler   |  last reply

is there any accurate snipers that i can make that r not powered by compressed air?

Is there any accurate snipers that i can make that r not powered by compressed air? Ive tried glove guns they aren't that good i don't think a spud gun would be accurate either.

Question by    |  last reply

Vortex Air / Vacuum Amplifier Help?!

Ok I need something to amplify my shop vac. I am building a cnc machine and I will have a vacuum attached near the cutting head. The problem is the distance of the pipe. The vacuum will barely be strong enough to pick up dust. I have seen some really cool vacuum amplifiers and air amplifiers that just run off compressed air. You get 25x what you put into it, but they want an insane amount of money for a machined metal ring. Here is what I am talking aboutwww.airtxinternational.com is all based off of the Hilsch vortex tube. There is an instructable on how to make one. They are just spinning the air to induce the surrounding air to move.There has to be a way to do the same thing or make these for a ton less than what they are charging. Anyone have any ideas?

Topic by Distorted Designs   |  last reply

Whats the best way to make an air powered go kart? Answered

I have an old go kart I'm fixing up and decided I want to make it run on compressed air. My question is whats the best way to achieve this? I've been debating between having an air motor drive the wheels directly, or having the air motor turn an alternator/generator to power an electric motor. I figured having the compressed air doing the work would require more torque, and therefor more air, whereas if the air motor just had to turn an alternator/generator it would need less torque and more speed. Any help would be greatly appreciated!

Question by thealeks   |  last reply

Keyboard vacuum using canned air

I'd like to build a little keyboard vaccum that'll suck out the crap that gets under my non-removable Macbook keys.My idea is that I should be able to just push the straw coming out of a can of compressed air into a *box* with two holes; one suction and one exhaust, but I don't really know what the insides of the box should look like (basically I want to make an air diode).Any suggestions?

Topic by edward_og   |  last reply

Winter weapons of snowy destruction

It's winter and snow is everywhere (well where I live there is) People are sledding and making snow angels. And of course my favorite part- Snowball fights. Snow in ball form whizzing thru the air towards people. Me loving to build stuff and loving to improve it to, I wanted to make something that could throw snowballs better than any person. I have an idea for a couple launchers and cannons but I want to see other people's ideas. So post anything, a launcher, a cannon, a catapult, a chucker. Anything that can accompany someone in a snowball fight. So people POST.

Topic by ostomesto   |  last reply

Can you use an intermittent bursts of air to control the output RPM of a Tesla Turbine?

I've seen plenty of these projects using a constant stream of air to turn the turbine. Surely with the combination of rotational inertia and an intermittent jet of air a constant rotational force could be sustained whilst conserving the compressed air available?

Question by    |  last reply

Spring powered internal air compressor

Hello everyone, I've come here for some help on designing a PVC-based air tank. I'm planning on building a pneumatic cannon that I can charge once and use to fire multiple short bursts of air. To do I decided to have two tanks -one large tank acting as the main tank and a local tank with a much smaller volume fed by the main. My problem is that I want to squeeze out all the air I can from the main tank, and I'm not entirely sure what the best way to do that would be. My current design uses a spring behind a wooden plunger so that as the volume of compressed air drops, the spring can extend and restore the pressure. (Image attached for clarity) Can anyone spot potential problem areas or places that could be improved?

Topic by Ninja Togo   |  last reply

water tank cleaning

I have a 14000 rainwater tank, and like to find a way go clean the debris from the bottom potentially recycling the disturbed water - so there is minium loss i have a ready supply of compressed air near by.,.,. can any one devise perhaps a venturi device that is easy to build, runs on compressed air and effectively vaccuums the muck from the bottom while recycling the caputred water....

Topic by agatornz   |  last reply

Hurricane balls and tornado ball with air compressor

This is a video of me spinning up hurricane balls with an air compressor. I have gotten them faster (I estimate this run got up to about 10,000rpm) but it is still very cool. The second part of the video is some random thing I made when I was bored. It just spins a marble really fast inside the container. I know it's not very exciting :P haha please comment and rate! hm...the video won't embed so just go here.

Topic by Electroinnovation   |  last reply

does anyone know anything about different types of plastic? Answered

I am building a small compressed air engine, (3/8" dia pistons). I am looking for a plastic that will be cheap, smooth, and easy to manipulate, but not flimsy at all. It will not have very much stress from torque, tension, or compression. It will have a little pressure inside. I will use this plastic for the cylinders, pistons, and some valves. I am going to buy my plastic from I am thinking PETE, UHMW, or PVC. Does anyone have any particular suggestions? feel free to ask for more details.

Question by MechEngineerMike   |  last reply

Can one cool air with a bicycle pump?

Here is the thing. I'm going on a 5 day trip and I'm taking a cool box with me. A cool box will only stay cold for half a day with ice in it. Compressed gas becomes cold when it expands, but buying cans of whatever gas and releasing them in the box is wasteful and expensive. Air out of the bicycle pump is kind of cold, but not near cold enough. How can I decrease the temperature coming out of the nozzle ? Or does someone have a better idea on how to turn muscle power into cool drinks.

Question by DaanV1   |  last reply

Fozzy13's AiR Experience!

Being an Artist in Residence at Instructables was an amazing experience.  It's difficult to put into words but I'll give it my best shot. Let's start at the beginning!  Because where else would you start?  I'm a college student, but I wasn't when I started to love building things.  A knee injury years ago took me out of wrestling for a summer and I used my ample free time during that time period quickly filled up as I was excited by the idea of breaking water into hydrogen and oxygen.  Over the past five years, I've grown to love making all sorts of things.  Instructables has always been a fantastic community to get ideas for projects and share what I've made.  After being part of the community for so long I wanted a chance to be a bigger part of Instructables and have the opportunity to meet some of the people who I've been following on this website for years!  Hopefully that only sounds mildly creepy.  The Artist in Residence program allowed me to have just that opportunity. I had the honor of being one of the very first Artists to make use of Instructables/Autodesk's brand new facility.  It's incredible.  If you're on a tour, it will be referred to as the greatest workshop and creative space in the world, and after working in it for a month,  that's an easy statement for me to believe.  The metal shop is where I loved spending most of my time as I worked on my main project: a jet engine.  However, I barely scratched the surface of what's possible even when I dabbled in playing around with 3D printing and laser cutting.  I'll post links to the projects I did when I'm done at the bottom of this post! I could go on and on about how exciting it was to learn how to TIG weld, or pull my first 3D printed object out of the printer for cleaning.  That's not what I loved most about being an Artist in Residence.  Don't get me wrong, that's why I was there, and I loved every minute of it!  But what I loved most was just being in the office at Instructables.  It was an amazing feeling to get to interact with lots of different people who all in some way loved to make things.  Being around people who know what Maker Faire is meant a lot to me!  Usually mentioning it only yields confused faces in my city.  It was great getting to talk about different projects people had done or were working on, which made me love "Build Day"s more than anything.  Being at the headquarters of Maker Culture made me feel at home. I've been away from the Pier where Instructables HQ is for a few weeks now.  I miss everyone I got to meet there, and I miss having the resources to make anything I could imagine.  Being and Artist in Residence will always be one of my best memories ever, and I can only hope that at some point I'll end up back at Instructables to see the awesome people I met and build some more cool stuff. Thank you to everyone at Instructables who made my short stay a great experience!  I can't thank you enough. - Projects! Jet Engine Instructable coming later!

Topic by fozzy13   |  last reply

Spupgun problems and help

I love to build spudguns and air cannons. But like everything you encounter a couple problems. So I decided to make a topic for everyone to post their questions and problems with spudguns and air cannons and for other people to post answers to them. Enjoy

Topic by ostomesto   |  last reply