Compressing hydrogen? Answered

I have a hydrogen generator and use the gas as i make it at the moment. I want to try compressing it, the issue is the gas is really a combination of pure oxygen and hydrogen in the perfect explosive mix. If i have flame aresters on all my pipes and have it well earthed as well as not using steel parts in the compressor so there is no chance of static or sparks from steel, will it be relatively safe to try compressing this into a cylinder? or am i insane to try this???

Question by benmurton 5 years ago  |  last reply 2 years ago

Compressed Air Battery

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

Topic by bubal 5 years ago  |  last reply 5 years ago

Instructables Image Compression

Does Instructables compress images once uploaded? What is the recommended file size so as to avoid compression of the image?

Topic by ElectroGuruji 6 weeks ago  |  last reply 6 weeks ago

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 7 years ago  |  last reply 7 years ago

Increase compression of an engine Answered

I am hoping to find a way to increase the compression of a small.18 radio control engine. I was wondering if applying high temperature epoxy would work because it will go on the sleeve rubbing against the piston or holding aluminum foil with the epoxy. 

Question by jbaker22 7 years ago  |  last reply 7 years ago

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 10 years ago  |  last reply 10 years ago

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 11 years ago  |  last reply 2 years ago

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 10 years ago  |  last reply 8 years ago

second cylinder stopped compressing

I have a Ford Mustang 2005 second cylinder stopped compressing how much it will cost

Question by NaviS3 3 years ago  |  last reply 3 years ago

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 10 years ago  |  last reply 10 years ago

D-Pad data compression?

So, I'm working on a small, simple, and yet very inefficient game console using multiple ATmega328 chips. Basically, I'm trying to compress the controller data into as few wires as possible using an ATmega. Hopefully using something along the lines of Anyone have any idea how to do this? I can handle coding, it's just the actual logic of it. 

Topic by Krayzi99 4 years ago  |  last reply 4 years ago

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 9 years ago  |  last reply 9 years ago

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 7 years ago  |  last reply 3 years ago

Compressing home made biogas

Hi I'm working on a project where we are using an anaerobic digester along with a series of gas scrubbers that yields biogas containing roughly 80% methane (ch4) and 20% oxygen. I know that this proportion of methane is well above the upper explosive limit of methane (about 15% methane by volume) but the presence of that much oxygen makes me nervous.  Am I going to have trouble compressing this gas mixture without blowing a new hole in my head? I am planning on compressing the purified biogas to about 20psi at between 60-80 degrees farenheight and in a respectably blast proof gas container.  please help! (Trying to help our planet!)

Question by Jdouenias 5 years ago  |  last reply 5 years ago

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 10 years ago  |  last reply 7 years ago

Is there any water soluble powder that when compressed into a form, stays that way?

Basically what the title says, I need it for an experiment. 

Question by Zem 9 years ago  |  last reply 9 years ago

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 9 years ago  |  last reply 9 years ago

how to compress gas into a bottle or a tank?

Question by kijac gang 10 years ago  |  last reply 3 years ago

how can I increase compression ...

How can I increase compression  in a small (5-10 hp) engine without buying a new piston or head?

Question by qparker 9 years ago  |  last reply 9 years ago

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 5 years ago

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 3 years ago  |  last reply 3 years ago

Purchasing compression spring latches online

Hi everyone I'm trying to get my hands on some compression spring latches, and have only been able to find them at, but they don't ship to Canada.  The latches I'm looking for are for this instructable: Any ideas where I can find this? I've been scouring the net for a while and can't find anything. Checked out local hardware stores, home depot, lowes, etc, and no luck. Looked at ebay, and can only find some guys from hong kong selling these and they're not made out of stainless steel (which is necessary; this project is exposed to a lot of water). Thx in advance.

Topic by David Catriel 7 years ago  |  last reply 7 years ago

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 5 years ago  |  last reply 5 years ago

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 9 years ago  |  last reply 8 years ago

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 8 years ago  |  last reply 8 years ago

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 5 years ago  |  last reply 5 years ago

is there any way to compress some liquid into a bottle or a tank??

I have an ethanol and i wanna compress it somehow in a bottle or something like that

Question by kijac gang 10 years ago  |  last reply 10 years ago

can 57 gb be compressed to 38 gb?

I have a windows vista laptop and a 38 gb external hdd. I need to back up almost 57 gb of stuff. Is there a program out there that has a compression ratio that big? please help? thanks!

Question by tvsamuel 6 years ago  |  last reply 6 years ago

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 2 years ago  |  last reply 1 year ago

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 2 years ago  |  last reply 2 years ago

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 4 months ago

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 7 years ago  |  last reply 7 years ago

i want to make a text compression programm on c ++? Answered

. m new to programming can someone help.plz make it simple? i have searched it over the net .mostly people were using huffman compression is there any other way ? if not can someone give me the code of huffmann's compression what if i want to modify it for  images etc.

Question by usbg3rd 7 years ago  |  last reply 7 years ago

How do I get compression into my engine?

I have a 2000 Grand Am Pontiac 6 cylinder. I have low to no compression in my engine, i haven't got a compression test done, at first I thought it was because I had a hole in my radiator hose, but i changed that along with my battery and both are perfectly fine, but car still won't start. It makes the sound like there is no compression, so I was wondering how do you get compression back into an engine. I spoke with a mechanic and he said that i could pour transmission oil into the spark plugs and that should do, I just wanted a second oppinon and see if there are any other ideas.

Question by BriLaneaC 6 years ago  |  last reply 4 years ago

If I spray a PVC tube with compressed air, will it become charged? Answered


Question by WerdnaN 9 years ago  |  last reply 9 years ago

Hello Guys...hw can i compress my Data at a lowest Memory (1 GB To Near About 10 MB or more)... plz help me....

Hello Guys... i want to know that if i can compress my Data at a lowest Memory (1 GB To Near About 10 MB or more)... plz help me....

Question by DELETED_kunal_smartfriend 9 years ago  |  last reply 9 years ago

Help! Missing Email after running compress folders in Outlook Express? Answered

Running Outlook Express in Windows XP Pro. Email was in my Inbox. Ran compress folders. Email now missing from my Inbox.

Question by stokesjohn451 4 years ago  |  last reply 4 years ago

DIY brick making machine or DIY compressed brick making machine

Can someone post an instructable on how to build a DIY brick making machine or DIY compressed brick making machine? Cheers!

Topic by rickyt 4 years ago  |  last reply 9 months ago

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 10 years ago  |  last reply 8 years ago

How would i compress hydrogen gas into a propane-type bottle? Answered

Im trying to store hydrogen into these propane bottles so i can use that instead of propane to fuel my foundry furnace.

Question by GalaxyX 9 years ago  |  last reply 5 months ago

gas coming out of lawn mower muffler and no compression?

Briggs and Stratton 8 hp lawnmower engine. Engine has no compression and when running the electric starter gas comes out of the muffler.

Question by greenthumb11 8 years ago  |  last reply 8 years ago

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 7 years ago  |  last reply 7 years ago

can compressed gas leak through a metal tank? Answered

So the other day i was talking with my friend and  he told me that gas can leak out of a metal tank.  he said gas can leak out of scuba tank going through the metal just like it goes through a latex balloon.  so i wanna know is this true?  could gas leak out (given enough time) through a 12 gram CO2 tank used for airsoft for instance?

Question by cdubnbird 8 years ago  |  last reply 8 years ago

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 2 months ago  |  last reply 2 months ago

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 6 years ago  |  last reply 6 years ago

I have 4 cycl car if loss compression would make car no go well and die?

Question by LADY WELDER 4 years ago  |  last reply 4 years ago

how can hydrogen gas can be compressed to liquid form?..?

Actually i am trying to use a liquid  hydrogen as a fuel in a car ...........

Question by kishan bharadwaj 7 years ago  |  last reply 5 years ago