DIY GAS POWERED AIR COMPRESSOR BUILD! -- HIGH PERFORMANCE BIG CFM! HOW TO - HONDA Powered
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- Опубліковано 12 гру 2020
- In this video I will show you how I built a high performance gas powered air compressor that puts out 22 CFM! I needed a high output compressor that I could use off grid while building my future house and other projects that need more air than my shop compressor in my garage could keep up with. So I decided to build my own for about a 1/4 of the price of a commercial comparable unit.
Here are some links to the components that I used in the build. If you purchase these through the links below, I will get a small commission from Amazon and you will not pay any more than usual. It helps me fund projects like this so I can continue putting out high quality content here on UA-cam and I really appreciate it. Thanks!
Parts List
Honda 390GX engine amzn.to/2K0x24a
Puma Compressor head compressor-source.com/collect...
Unloader valve amzn.to/3mbyZYF
Throttle control amzn.to/3gMFFvg
Throttle control air line and fittings amzn.to/3845VNo
Regulator amzn.to/2W8cVn8
Air gauges-2 amzn.to/2JRhCzf
1" bore double sheave pulley amzn.to/3qQH6xb
1/2" NPT weld in bung fittings. 3 needed amzn.to/3mjbb4W
If you have any questions about this project just leave me a note in the comments section and I will get you an answer.
Thanks,
Don
Prana-Tech - Навчання та стиль
Dang, i wish i had this five years ago when i built mine. There was next to nothing helpful on here, i ended up spending hours on forums, mostly just figuring out terminology and what things are called. I built mine on a trailer for blowing out irrigation systems every fall. Since i bought all the steel new, it cost me around $8k, but it was all a business write off. Used commercial ones around here are going for 12-18k, so i still saved and mine does a lot more than blow air! I made mine gas over electric. The power plant is a 12,000 watt generator and it powers a 240v motor that sits between two 12cfm compressor heads. It runs at operating rpm constantly though, the unloader just vents to the atmosphere when there's no demand. I'm probably going to change that soon. There's a 20 gallon tank for a buffer so the valve isn't cycling nonstop. I'm not sure what law in physics it is, but it increases my output psi considerably. It builds up to 140 and maintains 110+ constantly. Without the tank it was maintaining just under 100. I got a paint shop grade filter and separator for when it's needed, otherwise it's bypassed because water lines don't really seem to care if there's water in the air! The trailer can also run my mig welder and plasma cutter, along with any power tool i could need. I live on a cattle ranch and it's become an essential machine. That was the actual reason for the build, irrigation is just a side gig every fall and a way to write it off. I purposely choose the generator to be able to run my entire house with hvac. Haven't got that set up yet, but maybe I'm the next five years i will. I should make a video of it. Based off the stuff i like to watch, it seems there's a strong community here that would like it, and many of which are PhD blue collar professionals that will help me understand everything I've done wrong 😂. I really like your build a lot though. I've not seen any of your other videos, but I'll be checking them out. You do very nice work and unlike me, your welds don't look like bird shit! But your build is the perfect size, that'll handle anything it looks like. Very nice job.
Hey, thanks for the great comment! Wow, yours sounds like an awesome build! I like the two head design though. Great idea! 😊👍
Awesome job, love how you think outside the box on your projects.
Hi Stewart! Thanks man! I appreciate your kind words.🙏😀
Just what I’ve been looking for…
Glad you liked it😊👍
I was looking for a how-to build gas model video, thanks for posting, I would have liked to see more of the hookup process more than the welding and painting, but beggars can't be choosers. Cheers.
Impressive fabrication work.
Thanks Joseph! I appreciate it 🙏😀
Nice job!!
You did a great job. I like your work ethic and can do attitude. I was looking for a better compressor to replace my clapped out set up. You’ve taken all the guess work out of me just modifying and making my old one better than one I can buy for what I need. I’m also going to be using the stater to help charge my battery bank in my enclosed trailer so I can use my power converter.
Hi Spencer! Thank you for the nice comment! I appreciate it! I like your idea of charging your battery bank with the engine stator. The starting battery is usually back up to full charge within 10 minutes or so, then everything after that can be used for charging your bank. Great idea!👍😀Don
Brilliant video thank you 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
Hi Brent! Thanks, I appreciate your kind comments! 😁👍
great job i love it i having trouble finding the Freon tank.and the compressor any ideas
Hi Bruce! Well, it looks like the compressor head I used is sold out right now. I built another one of these wit the big 5 hp twin cyl. Head from harbor freight about 10 years ago and it is still going strong today. It would be a decent secondary choice if you don’t need 22cfm. I think it’s rated at 17cfm if I remember correctly. The tank is just what I happened to find locally. I was looking for a used large propane tank, but you have to be very careful with those before you weld on it. I would pull the valve off and then flush the tank with water completely to the top and then let it dry for a few days to make sure all the fuel is gone. 😊👍
Man you don’t get more DIY then welding while wearing shorts , t-shirt and open toe sandals. Ahaha awesome . I’m planing to build one to have in the back of my f250.
Hi Miguel! Yeah, I know... but it’s so darn hot here in Arizona! Sure makes you dance though when a piece of slag gets in your flip-flop! 🤣 This would make a great service truck mounted unit for air tools. Let me know if you have any questions when you get going. I’ll be glad to help in any way I can. 👍😀Don
Awesome project. You did a really great job, very high standards. One day you could swap that engine over to a bandsaw mill and get double duty from it. I'd like to see your engineering for that, no doubt you'd make a great one.
Thank you sir! I appreciate your nice comment!😁👍
Nice job !!!! Will it produce enough air for sandblasting wood? I know it needs a steady airflow. Also as you mentioned in the video a new one costs tons of money from a shop. Thats why i aint know well when i build one my own what engine and air head i should use 🤷♂️. Will copy the one you made overthere... looks awesome.
Sorry when my english spelling is wrong. ☝😁I am dutch. Greetings from Belgium. 😉
Hello, yes this will produce enough to sandblast wood with no problem at all. 😊👍
Nice work, we're did you get the unloaded valve?
Thanks! I found the right one on Amazon and then found it cheaper on eBay. 😊👍
Have you found a good throttle control valve for a predator 6 or 13 horse motor?
Hi Andrew, this is the one I’m running on the Honda 13hp. www.amazon.com/Conrader-Airline-Throttle-Control-TCSP-H-1113-B/dp/B00UEUZO98/ref=sr_1_5?crid=3CX601W679D09&keywords=Conrader+throttle+control+valve&qid=1641927866&sprefix=conrader+throttle+control+valve%2Caps%2C190&sr=8-5
It is too big for the 6hp but they make a smaller one for the 6hp. If they are direct clones of the Honda, they should work. 😊👍
Hey buddy, I'm trying to build a 10cfm compressor and I'm having a bit of difficulty with configuration do you have a list of the valves needed for a gas driven compressor?
Hi Richard, here is a link to the unloader valve that I used in this compressor build. www.amazon.com/Compressor-unloader-combination-discharge-95-125/dp/B01AMPQT02/ref=as_li_ss_tl?dchild=1&keywords=125+psi+unloader+valve&qid=1607896868&s=hi&sr=1-12&linkCode=sl1&tag=pranatech-20&linkId=9e1b0fba422791a3bf4e96e697b563f6&language=en_US It is the main control used in a gas powered compressor. It unloads the pressure from the compressor head so it no longer goes into the tank building pressure. It also kicks down the motor to idle and when the pressure drops in the tank, it kicks the motor back up to speed and begins pressurizing the tank again. You will also need a throttle control valve and a pressure relief valve to insure that the tank doesn’t over pressure itself if the unloader valve malfunctions. All of the parts used in the build are listed in the description of the video (the little arrow thing to the right of the title of the video). Let me know if you have any other questions. 👍😁
Was it a setting thing or welder having problems that it was sticking? Not criticizing just curious so I can learn from it.
Hi Scott, nope, just laziness of the guy welding! I had a crappy ground because of the paint on the tank and my nozzle was all clogged up with slag from so much welding lately. Totally my fault and not the welder’s.
Pretty neat, where did you get the compressor?
Hi Andrew! Here is a link to the compressor pump I used. This one is a two stage and the one I used was single stage. They are sold out of the single stage pumps. compressor-source.com/collections/compressor-pumps/products/puma-3-cylinder-two-stage-cast-iron-15-scfm-air-compressor-pump 👍😁
How is it holding up? Are you worried that the speed at idle is too low to keep the pump lubricated?
Hi Travis, it’s holding up great! It is a splash type lubrication and even at low rpms it seems to lubricate just fine.👍😁
Thanks for the vid. I got an old wheelbarrow compressor that doesn't work and wanted to replace the pump and engine. this helped me a lot to understand how the throttle works and what I would need to order to get it working right. Looks like another Arizonan too :)
Also, curious, what do you need such a big compressor to build a house? Just curious. Running an entire crew with framing nailers?
Hi Andy! Hey I’m glad that the video helped. Yes, I’m in Tucson 😁👍
@@PranaTech that was quick! Awesome, I'm up in PHX. I edited my message to add a Q- was wondering what you needed the CFM for house building. Regardless, good look with the build!
Hi Andy! I needed the high cfm because I want to build a dome home out of Aircrete and then spray shotCrete on the outside. Spraying shotCrete takes a lot of cfm and will need probably 2-3 of these compressors to pull it off. 😁👍
How many gallons is your setup and how long does it take to recover?
My tank is 15 gallons and it will fill to full pressure with the tank empty in less than a minute. When the tank is full and goes down in pressure to activate the unloader valve, it recovers in about 30 seconds. 👍😀
Does the throttle control Rev the engine back up when the pressure starts to get low?
Hi Zach, yes it kicks it back up to whatever RPM you have it set to for running while compressing. When it senses the high pressure it kicks it down to idle and diverts the compressed air out the side of the valve so that there is no load on the engine. 😊👍
@@PranaTech awesome! Thanks for the quick reply. I'm needing a compressor and I'm debating on building my own just to give myself another challenging task and I'd save a lot of money compared to buying something new
please do more aircrete tests or we can do them together
Is a single stage better on a30 gallon tank for painting a car or 2 stage? I’m going to build one thanks
Hi there, I’ve painted a few of my own cars with my 30 gal. 10cfm single stage compressor and I have never run out of air with it. If you go with a two stage, you will have even more air to spare. The drawback with two stage compressor heads with DIY builds is that the put out around 175 psi, so your tank needs to be beefier than a single stage build. The parts are bigger for the pilot valve and pop off valve etc… so there will be added costs as well. Hope this helps. 👍😊Don
Thank you so much yes this helps me out allot. Your videos are great keep up the good work…
You are very welcome! Thank you for your kind words.🙏😊
Fast forward 2 years, I've also been looking a piece-mailing one together due to the insane markups for even 'midsize' consumer levels. Just a year ago they were half price!! Meanwhile, some stores are practically drowning in stock and tell you to take two items when you buy one... 🤦♂
Yes, I was surprised at how much the markup is for one of these!
I want to build a bigger stationary one , but with 2 compressor heads for twice the cfm.
Hi John! That’s funny, I’ve thought about doing the same thing! It wouldn’t be that much more difficult at all. I would mount the engine in the middle and make it stationary and make the compressors adjustable to tighten the belts. Obviously you would need double the horsepower but the work wouldn’t be much more.👍😁
Awesome build. What do you need 20 cfm for? I see you had a large jackhammer type air coupler/connector.
Hi Dennis, I use it for an Aircrete foam generator that I built. It uses a lot of air to pump the fluid and to inject air to produce the foam. Thank you for your kind comment!🙏😊
@@PranaTech Thanks Don! Love the channel. I have learned a lot. I hope you keep making videos
Hey, glad you like my channel! Yes, I will continue posting up stuff because I’m always building something. I’m editing a video right now of my latest project that I just finished which is a big water cooler for my Tig welder. 😁👍Thanks!
@@PranaTech SWEET! I'm looking to build one for a similar purpose. Picture a "Monolithic dome" but as a Quonset hut. I'll be fabricating my own arches & galvanized skin from big box store supplies. Then Froth-pack foam the inside. And then rebar & DIY shotcrete using the Mortar Sprayer gun. 20+ CFM will be more than enough for this process.
I'll have a square wall "Monolithic" for less $$$ in shell materials, no need for inflator fans & costly Airlock. This means I'll be able to mix the concrete at my own pace, wheelbarrow it in through an open door, and then use a $300 Mortar Sprayer instead of a $20,000 shotcrete pump. Plus, I can do it at my own pace. Alone. Because I'm cheap. 😉
I like the way you think! I’m headed in a similar direction as well! I’m looking at doing a dome with my own fabricated arches as well out of 2” square tubing and then tack welding expanded metal to the inside and hand troweling or “parging” mortar to the inside and once that shell is finished, insulating with foam and then laying rebar and then shotcrete the outside. I’m with you, I have no use for the air form method! Yours sounds like a great plan as well. I’m pretty frugal myself and I say any money I don’t have to pay someone else is money in the bank!😁👍
You're wire welders look like twin brothers ! Did you acquire them through Amazon and what were their cost ?
Hi Joe! One of them is my wire feed mig welder and the other is my AC/DC Tig welder. They do look like twins though! The wire feed one I got through Amazon for $350 back when I bought it, and the other came right from Yeswelder. They now have an online store. Yeswelder.com
The Tig welder cost about $600 when I got it. There is a discount code in my video description but I’ll just give it here for you if you want to purchase one. My discount code is PRANATECH and it will get you 10% off everything on their site. 😁👍
What size pulley and motor pulley
Hi Parker, the motor pulley is 3” and the pulley on the compressor is 10” 😁👍
Did you use this compressor in an aircrete project??
Hi David! No, I was planning to use it to combine with another compressor, so that I could spray my own shotCrete for a dome home. I was going to use the Aircrete to build the shell and then spray the outside with shotCrete for a durable shell. I could not find one engineer that would sign off on my design though. 🙁
@@PranaTech oh my, sorry to hear that buddy!! It is difficult to find engineers to embrace alternative building methods indeed. Here is an idea for you, there is a guy in Alabama who did a boat shed with wood and styroaircrete. I mention this, because the arches could be made to go in a circle and given the 2x4 sections, perhaps an engineer would feel comfortable signing off on that design. Let me find you the video of the boat shed and then see if you can rig the apex to accept the (whatever amount is needed to comply with lumber frame protocol). The idea is that the structure will have wooden ribs for the peace of mind of the engineer.
These guys claim that this is a certified way to build 2x4 domes!! Incase it helps you!! ua-cam.com/video/g0rnz6FXkCA/v-deo.htmlsi=HzFCwNxpoMcQGOLR
You can put what ever size tank underneath or is that not how this works lol I'm taking a real swing at this just want a bigger tank and this might be a silly question but I'll be running a tool that requires 18-20cfm at min 90psi with a max of 100psi now if I have a bigger tank this set up should work ok right or will I only get less than a minute of use before I need to stop and let the compressor build back up sorry I'm a complete novice in this air world lol
Nvm I need to go a little bigger on motor and compressor head
Hi John. Yes, you are correct, you can put as big a tank as you want under the compressor and it will just give you more reserve air. Just be advised that most manufacturers overrate their compressor heads. If you need 18-20 Cfm I would go with a 25 to 30 cfm rated head. I have found a few that size on eBay in the area of $800-$900 if you look around. Probably need a 15hp gas engine or bigger to run it. Let me know if you have any other questions. 😁👍 Don
@@PranaTech thanks for the confirmation and advice much appreciated
Beautiful job on the build !! but Please, Please tell everyone you normalized all the welds on the pressure vessel/ tank!!!
explain to your viewers how to normalize a weld and if not done you have created a bomb that could kill someone! not a troll joke! or do not weld on air tanks period.
I worked with a guy who decided to weld up his leaky compressor. It was the last decision he made. his girl friend heard a loud sound from the garage and met him at the door holding his intestines in his hand. He said "help me" and fell dead at her feet. Life is too short to take chances.
Hi there! Thank you for your cautionary tale and your concern for the safety of others. I will tell you that I have been fabricating and welding for more than 35 years. I also have extensive experience with metallurgy and I’m also a machinist. The only time you would need to do any sort of normalizing with a pressure tank is if you were working with a higher carbon steel that is heat treatable. Low carbon steel like what these tanks are made of can not be hardened as long as you weld with a compatible low carbon wire. Also, this tank sees 125psi max. as it’s working pressure and the tank was a Freon tank before and was rated at 400psi and is much thicker steel than a standard compressor tank. As such, I am fully confident that this tank will outlast me in its use as a compressor. I’m sorry about the death of your coworker, but the only way I can see that there would be a problem was if he welded while the tank was fully pressurized or had his heat way too hot or was welding with a torch or something. Thank you for your concern though.😊🙏