Page 1 of 2 12 LastLast
Results 1 to 25 of 45

Thread: My portable/stationary air compressor idea

  1. #1
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    My portable/stationary air compressor idea

    I need a more powerful air compressor than i currently have. My compressor is a 200 psi, 6 gallon 5.1 CFM @ 90psi. I love it because its quiet. I had this idea that if i bought another one i could hook them both together with an air hose and put them on a bigger tank. I could get a 200 PSI tank and mount a top mounting bracket for the two compressors to sit on. This way if i needed a portable compressor i could just unhook the hose and lift the compressor off the tank. With this set up i would have 200 PSI and 10.2 CFM at 90 PSI, which should be enough for my needs. What do you think of this idea?

    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  2. #2
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    The only hitch to my plan is where do i get a large 200 PSI air tank that's affordable? a 20 gallon tank might be big enough. That with the 12 gallons on the two compressors would be 32 gallons. I could always use the pressure regulator to bring the pressure down to what the tank is rated at but i would rather get a 200 PSI.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  3. #3
    Join Date
    Aug 2018
    Location
    'ta town, KS
    Posts
    361
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Propane tanks work, Craigslist for shot craps compressors.

    Sent from my SM-G960U using Tapatalk
    I haven't built anything I can't throw away. Perfection is the journey.

    Mac

  4. Likes 12345678910 liked this post
  5. #4
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Mac's Crew View Post
    Propane tanks work, Craigslist for shot craps compressors.

    Sent from my SM-G960U using Tapatalk
    Thanks for the suggestion. I looked it up, I wasn't aware that propane tanks could hold 200PSI
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  6. #5
    Join Date
    Mar 2018
    Location
    Clovis California
    Posts
    3,035
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    When I buy a aircompresser I adjust pulley size for 100 psi and the switch 80 to 100 psi.
    This max cft @ 100 psi.
    Unless you filling big tires then may need a higher pressure but that cuts the cfm down.

    Dave

    FYI I like 12 to 15 cfm

    Quote Originally Posted by Need Advice View Post
    I need a more powerful air compressor than i currently have. My compressor is a 200 psi, 6 gallon 5.1 CFM @ 90psi. I love it because its quiet. I had this idea that if i bought another one i could hook them both together with an air hose and put them on a bigger tank. I could get a 200 PSI tank and mount a top mounting bracket for the two compressors to sit on. This way if i needed a portable compressor i could just unhook the hose and lift the compressor off the tank. With this set up i would have 200 PSI and 10.2 CFM at 90 PSI, which should be enough for my needs. What do you think of this idea?


  7. #6
    Join Date
    Aug 2018
    Location
    'ta town, KS
    Posts
    361
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    I don't run 200 psi, but they will hold 90... which runs my air tools. I have a 300 gallon propane tank for "outside" storage. I also use a ball valve so I don't have to hear that thing being filled if I am just running an impact to do brakes etc. But if I need a lot of air I open it up.

    Sent from my SM-G960U using Tapatalk
    I haven't built anything I can't throw away. Perfection is the journey.

    Mac

  8. #7
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by smithdoor View Post
    When I buy a aircompresser I adjust pulley size for 100 psi and the switch 80 to 100 psi.
    This max cft @ 100 psi.
    Unless you filling big tires then may need a higher pressure but that cuts the cfm down.

    Dave

    FYI I like 12 to 15 cfm
    I think the 200 psi might be what gives me the 5.1 CFM, but I'm not sure.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  9. #8
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Mac's Crew View Post
    I don't run 200 psi, but they will hold 90... which runs my air tools. I have a 300 gallon propane tank for "outside" storage. I also use a ball valve so I don't have to hear that thing being filled if I am just running an impact to do brakes etc. But if I need a lot of air I open it up.

    Sent from my SM-G960U using Tapatalk
    Yes i cant imagine what a person would run 200 psi on. I think its designed to run multiple air nailers at the same time, but they don't use 200 psi.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  10. #9
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    One drawback to this idea is draining the water from the tank. My compressor has two tanks and two drain valves. If i got another compressor i would have 4 valves to drain and if i add another tank that would be 5 valves.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  11. #10
    Join Date
    Aug 2018
    Location
    'ta town, KS
    Posts
    361
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    I use black pipe running up and down the wall for air dryer, and I drain my compressor of water once a month

    Sent from my SM-G960U using Tapatalk
    I haven't built anything I can't throw away. Perfection is the journey.

    Mac

  12. #11
    Join Date
    Mar 2021
    Location
    Near Roanoke, VA
    Posts
    512
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    IMHO,, the specs are being mis-read,,

    The amperage needed to produce 200psi @ over 5CFM would be WAY beyond the typical 115 volt outlet,,

    ( the compressor MIGHT produce 200psi,,, OR 5cfm,, but, not both at the same time)
    (The compressor might take a half hour to pump up to 200psi,, but,, it will get there eventually!! LOL!!)

    THEN two of them running would double the amperage. You might need 40 amps or more to get 10CFM @ 200psi,,

    Now, some place like HF would list specs like that,, but, simply because of the language barrier of the company printing the box.

    Also, synchronizing the two compressors would be difficult, the unit would need to be rewired so that one pressure switch controls both compressors.
    otherwise, one compressor would run, not allowing the other compressor to drop below the cut-in pressure.

  13. Likes 12345678910 liked this post
  14. #12
    Join Date
    Jun 2012
    Location
    Laredo, Tx
    Posts
    5,867
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Need Advice View Post
    I think the 200 psi might be what gives me the 5.1 CFM, but I'm not sure.
    Nothing wrong with parallel'ing multiple compressors to get more CFM. Heck I do that now to power my 3M 4.5" air grinders (~45 CFM under load) via a 10HP 38 CFM compressor and two 120V compressors that put out around 5-6 CFM each. The 200psi doesn't give more CFM, but it does give a little bit of a "time buffer" before the pump kicks on, assuming the air tool consumes much less than what the pump can provide. Once you consume an airflow equal to or higher than what the pump can provide, and sustain it, the pump will be running all the time. If you can't find a bigger tank that is rated to 200psi, just get one, or a few, regular tanks and dial down the pressure you feed them, down to about 125-135.

    What air tools are you planning to run?
    Last edited by Oscar; 3 Weeks Ago at 05:17 PM.
    1st on WeldingWeb to have a scrolling sig!



  15. Likes Need Advice, 12345678910 liked this post
  16. #13
    Join Date
    Dec 2013
    Posts
    1,810
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Oscar has posed "the" question, what is it you think you need all this compressed air for. I'll pose another, is your compressor supplying 5.1 CFM @ 90 psi or is it compressing 5.1 cfm @ atmospheric pressure to 90 psi?
    ---Meltedmetal

  17. #14
    Join Date
    Jun 2012
    Location
    Laredo, Tx
    Posts
    5,867
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by SweetMK View Post
    Also, synchronizing the two compressors would be difficult, the unit would need to be rewired so that one pressure switch controls both compressors. otherwise, one compressor would run, not allowing the other compressor to drop below the cut-in pressure.
    They don't have to be synchronized. All you need is a pneumatic one-way check-valve on each line feeding the tank. That's how I actually have mine, and it works.

    These small check-valves from Control Devices are $6 ea and flow up to 9CFM, so they are perfect for parallel'ing small air compressors.
    Last edited by Oscar; 3 Weeks Ago at 05:42 PM.
    1st on WeldingWeb to have a scrolling sig!



  18. #15
    Join Date
    Dec 2008
    Posts
    60
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by SweetMK View Post
    Also, synchronizing the two compressors would be difficult, the unit would need to be rewired so that one pressure switch controls both compressors. otherwise, one compressor would run, not allowing the other compressor to drop below the cut-in pressure.
    FWIW, the Hannah's Bug YouTube channel did this very project of paralleling compressors:


  19. #16
    Join Date
    Jun 2012
    Location
    Laredo, Tx
    Posts
    5,867
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Meltedmetal View Post
    Oscar has posed "the" question, what is it you think you need all this compressed air for. I'll pose another, is your compressor supplying 5.1 CFM @ 90 psi or is it compressing 5.1 cfm @ atmospheric pressure to 90 psi?
    That is what it supplies.

    https://www.ridgid.com/us/en/electric-quiet-compressor
    1st on WeldingWeb to have a scrolling sig!



  20. Likes Need Advice liked this post
  21. #17
    Join Date
    Dec 2013
    Posts
    1,810
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Oscar View Post
    From the specs for the compressor linked:5.1 SCFM at 90 psi high-air delivery for peak performance

    https://www.campbellhausfeld.com/und...r-ratings.html

    What’s the difference between cfm and scfm?

    The most common air compressor ratings are cfm and scfm (standard cfm). So, what’s the difference?

    As a measurement, cfm will be a smaller number than scfm, because cfm values are taken under pressure (typically 90 psi), so the air volume is small. To calculate scfm, the air is expanded to a standard condition to take into account the variables of pressure, temperature and humidity: 14.7 psia (0 psig), 68 degrees Fahrenheit at 36 percent relative humidity. As a result, scfm values are larger. Campbell Hausfeld typically uses cfm values when talking about air compressors and scfm values when talking about air tools.
    ---Meltedmetal

  22. Likes Need Advice liked this post
  23. #18
    Join Date
    Apr 2006
    Location
    Soda springs,Id
    Posts
    5,426
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    I can't figger why anyone other than an industrial setting needs 200 psi.
    Ol' Stonebreaker
    "Experience is the name everyone gives to their mistakes"
    Hobart G-213 portable
    Miller 175 mig
    Miller thunderbolt ac/dc stick
    Victor O/A setup
    Makita chop saw

  24. #19
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Mac's Crew View Post
    I use black pipe running up and down the wall for air dryer, and I drain my compressor of water once a month

    Sent from my SM-G960U using Tapatalk
    thanks. Yes I plan on building an air dryer
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  25. #20
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by SweetMK View Post
    IMHO,, the specs are being mis-read,,

    The amperage needed to produce 200psi @ over 5CFM would be WAY beyond the typical 115 volt outlet,,

    ( the compressor MIGHT produce 200psi,,, OR 5cfm,, but, not both at the same time)
    (The compressor might take a half hour to pump up to 200psi,, but,, it will get there eventually!! LOL!!)

    THEN two of them running would double the amperage. You might need 40 amps or more to get 10CFM @ 200psi,,

    Now, some place like HF would list specs like that,, but, simply because of the language barrier of the company printing the box.

    Also, synchronizing the two compressors would be difficult, the unit would need to be rewired so that one pressure switch controls both compressors.
    otherwise, one compressor would run, not allowing the other compressor to drop below the cut-in pressure.
    Thank you. I've hooked two compressors up together with hoses before. One compressor would run a second longer than the other but thats not a problem
    Last edited by Need Advice; 3 Weeks Ago at 06:53 PM.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  26. #21
    Join Date
    Mar 2018
    Location
    Clovis California
    Posts
    3,035
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    The 200 psi same compressor at 5cfm is great for filling tires.
    But if change the pulley on motor to 100psi the cfm almost double.
    My old compressor used 60 gal tank
    The motor pulley was set at 100psi and would give over 15cfm all day long.

    Dave

    Quote Originally Posted by Need Advice View Post
    I think the 200 psi might be what gives me the 5.1 CFM, but I'm not sure.

  27. Likes Need Advice liked this post
  28. #22
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Meltedmetal View Post
    Oscar has posed "the" question, what is it you think you need all this compressed air for. I'll pose another, is your compressor supplying 5.1 CFM @ 90 psi or is it compressing 5.1 cfm @ atmospheric pressure to 90 psi?
    lol your question is over my head, but the reason i need more CFM and more tank is for air tools and a plasma cutter, and possibly a sand blaster in the future.
    Last edited by Need Advice; 3 Weeks Ago at 06:52 PM.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  29. #23
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Oscar View Post
    They don't have to be synchronized. All you need is a pneumatic one-way check-valve on each line feeding the tank. That's how I actually have mine, and it works.

    These small check-valves from Control Devices are $6 ea and flow up to 9CFM, so they are perfect for parallel'ing small air compressors.
    Thanks for the info.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  30. #24
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by upand_at_them View Post
    FWIW, the Hannah's Bug YouTube channel did this very project of paralleling compressors:

    thanks, I've seen that video in the past but don't remember much about it. I hooked up two HF compressors like she has years ago when i was doing an auto body project. It got me by..
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

  31. #25
    Join Date
    Sep 2021
    Location
    USA
    Posts
    409
    Post Thanks / Like

    Re: My portable/stationary air compressor idea

    Quote Originally Posted by Meltedmetal View Post
    From the specs for the compressor linked:5.1 SCFM at 90 psi high-air delivery for peak performance

    https://www.campbellhausfeld.com/und...r-ratings.html

    What’s the difference between cfm and scfm?

    The most common air compressor ratings are cfm and scfm (standard cfm). So, what’s the difference?

    As a measurement, cfm will be a smaller number than scfm, because cfm values are taken under pressure (typically 90 psi), so the air volume is small. To calculate scfm, the air is expanded to a standard condition to take into account the variables of pressure, temperature and humidity: 14.7 psia (0 psig), 68 degrees Fahrenheit at 36 percent relative humidity. As a result, scfm values are larger. Campbell Hausfeld typically uses cfm values when talking about air compressors and scfm values when talking about air tools.
    Thanks. That's i bit more than i want to get into. It seems like rocket science to me.
    Lincoln Pro MIG 180
    Chicago electric 225 Arc
    Harris oxy fuel

    Everyone who calls on the name of the Lord will be saved. Romans 10:13

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Page generated in 1,635,097,840.32220 seconds with 12 queries