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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    |  last reply


Compressed Air Battery

A simple example of how a compressed air battery works. This one, of course, is not very efficient. https://www.instructables.com/id/Compressed-Air-Battery/

Topic by bubal    |  last reply


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    |  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


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    |  last reply


second cylinder stopped compressing

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

Question by NaviS3    |  last reply


Subaru legacy outback 1997 no compression? EJ25 DOHC Rebuilt heads/piston rings/gaskets/seals/timing Answered

I toasted my Subaru about a year ago and just now am able to work on it. Had the heads rebuilt, piston rings,gaskets and seals...I do a compression check and zero on all 4. What else could it be? The lifters? I'm really at a loss and trying to fix it. Been contemplating getting an actual mechanic to come out and look it over, but I would rather try everything I can first. Anything at all to point me in a new direction would be awesome. Thanks

Question by Gtx864    |  last reply


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 http://pinouts.ru/Game/genesiscontroller_pinout.shtml. Anyone have any idea how to do this? I can handle coding, it's just the actual logic of it. 

Topic by Krayzi99    |  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:https://www.instructables.com/id/Build-an-Airsoft-Trip-Mine/If 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


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 http://www.ebikestop.com/prodimages/PU8010_medium.jpghttp://www.ebikestop.com/genuine_innovations_air_chuck_sl_inflation_device_includes_16g_cartridge-PU8010.php

Topic by gregdove    |  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


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


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    |  last reply


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    |  last reply


My timing belt broke recently, i replaced the belt, replaced the valves checked the pistons and all in good order.

With all that in order the car does not start and makes a weird sound like a vacuum cleaner , so no compression. What can be the problem and can this be restored ? Please help. Polo Playa 1.4, 2001 model

Question by dagai    |  last reply


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 McMaster.com, but they don't ship to Canada.  The latches I'm looking for are for this instructable: https://www.instructables.com/id/Underwater-Housing-for-miniDV/step2/More-shopping/ 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    |  last reply



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    |  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 brycesilan  


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


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


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    |  last reply


video Transmission wirelessly

Hello, I wonder if someone can help. I need to transfer video wirelessly using basic 433 MHz RF. https://www.instructables.com/id/RF-315433-MHz-Transmitter-receiver-Module-and-Ardu/ My problem is the data is more than 5 Mbps and I don't want to use WiFi because of high power consumption and health safety. let me explain it more: 1. The input data is the digital video (5 Mbps) >> compressed using video encoder >> transferred wirelessly. 2. Receive the data >> decompressed using video decoder >> display on tiny uLED screen 91X91 pixel. any one have an idea? Thanks Regards Nabeel  

Topic by NabeelLass    |  last reply


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    |  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


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  


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    |  last reply


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 UmerJavaid    |  last reply


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    |  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



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    |  last reply


What could it be? Car died. I lost all compression on all 4 cylinders in my car ?

This is a 2000 Dodge Neon 4 CYL 16 valves,SOHC engine. Ok. On oct 1st I was driving about 60 mph for about 6 minutes after leaving my house in the morning I heard a noise that sounded like a pulley belt then the car turned off, pulled over to a parking and checked to see if a belt broke and they both were there. I checked the timing belt still on. try to start it and the timing belt look to be ok and turning. I did notice that when cranking it sounded weird like it had no compression at all at the pistons. I towed the car home checked the compression an all 4 cylinders and I was right I had no compression at all on all 4 cylinders. I see the timing belt turning when I crank it so I know for sure that it can't be the timing since the belt was replaced MAY, 2009 when the water pump went bad along with a new pump and rebuilt head w/brand new valves. I'm not sure what 's going on all i know is when I crank it the timing belts turns, the pulley belts all turn fine. This is the first time I had this problem. I fix all my cars but this is a first for me. If anyone has any idea what could it be I appreciate your help. I just spent a lot of money on this car so I need to have an idea before I start pulling it apart after installing a new head gasket set with all the new parts. THANKS

Question by PitStoP    |  last reply



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    |  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


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


How do I start a Pajero jeep with Low compression ?

I bought a pajero sport 2007 2.5 a few months ago that always had trouble starting. I would heat it 4 times then crank and she would pick up with a puff of smoke then run fine. No problem starting when warm. Having ruled out the plugs (replaced) the relay (12 volts) a local garage man did a compression test and told me that two of the cylinders had low compression We were going to run some oil additive through it to see if that would help But now the B**ch wont start at all. it cranks fine but wont pick up. Its outside the house and I am waiting for the mechanic to get time to do a house call. I was wondering if there is any sure fire way of starting it up with slightly low compression so that I can run some  oil additive through it  or if I get it started what is the best treatment to put through it. also If I have to open up the engine how complicated and expensive would it be I have a mechanic friend coming to stay with me in a few weeks what are the minimum tools needed?

Question by Cargorm    |  last reply


Any idea for recycling an old compressed natural gas cylinder? Answered

It was in the waste, I recovered it. weights 34 kg (75 pounds) diameter 24 cm (9.4 inches) length 80 cm (31.5 inches) capacity 30 liters (7,9 gallons), working pressure 200 bar (2900 PSI). hemispherical ends medium hard steel Maybe I could make a crucible for melt aluminum, copper, etc, cutting 15 cm from the bottom. But for this it is a little big.  I am waiting some suggestion. Thanks in advance!

Question by rimar2000    |  last reply


New layout of comments meta-data seems compressed and cluttered

I don't think I like the tweaks that were done to the comments format.  The user's avatar, date/time stamp, and username are all mashed together with no spacing between them.  I liked having the date/time in the upper right corner, but I know that a lot of users missed the information (leading to silly bumps and year+ late replies).  Perhaps you could do something like: [Avatar] wrote on : with some spaces to keep the formatting nice?

Topic by kelseymh    |  last reply


What equipment is needed to fill an appropriate cylinder with oxygen generated by the electrolysis of water?

Update: I need someone that has experience with gas cylinders to point out potential dangers that would be present by filling this way, We've already discussed water vapor and oil potentially making its way inside. That doesn't sound good to me so I need certainty that its safe or those can be eliminated or reduced to safe levels. Right now I would really like to know what I need so I can refill tanks myself. I'm guessing its a special adapter or replacement valve, but I don't know where to start Original: Would it be possible to fill an appropriate oxygen tank with the right adapters/compression system with the oxygen generated by electrolyzing water and what kind of equipment would be needed? I know for propane you can buy adapters and refill/transfer from one to another, but obviously this is completely different, and I don't know anything about oxygen valves/adapters or compression systems. Yes I know this could potentially be very dangerous and also have no interest in collecting the hydrogen. Just to clarify we are talking about commercial grade tanks, not a 2 liter soda bottle. Also, if possible how high of purity would be expected using optimal electrodes and electrolytes to prevent corrosion and impurities. Any information at all would be very helpful.

Question by NathanE31    |  last reply


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    |  last reply


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    |  last reply


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    |  last reply


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    |  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


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