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Thread: Compressor cfm

  1. #1
    Join Date
    Nov 2007
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    olmsted falls,ohio
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    454

    Compressor cfm

    Is there an easy way to determine compressor cfm.i have a 50 year old 2 hp craftsman that still works great.tag is long gone.looking to get spray outfit but I donít know if I have enough for a hvlp or maybe a lvlp.any thoughts appreciated.

  2. #2
    Roughly 3 CFM per horsepower.

  3. #3
    Join Date
    Feb 2014
    Location
    Suffolk, Va.
    Posts
    208
    You should be able to get close using George's calculation or looking at specs of that compressor or similar compressors online. Most old craftsman have info specs or manuals online.
    Michael Dilday
    Suffolk, Va.

  4. #4
    Join Date
    Nov 2007
    Location
    olmsted falls,ohio
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    454
    Thanks George and mike the model and serial number are no longer on the compressor. if 6 cfm is close I will go from there.i tried a google search but nothing I could find without model no.thanks again.

  5. #5
    Join Date
    Apr 2006
    Location
    Phoenix AZ Area
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    2,372
    CFM per HP only works if the HP is spec'd is not the "developed" HP. If the compressor runs on 120V a little over 1HP continuous is all you can get.

  6. #6
    Join Date
    Nov 2007
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    olmsted falls,ohio
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    454
    It is 220 volts.

  7. #7
    Join Date
    Sep 2006
    Location
    Deep South
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    3,947
    Your compressor should be good enough to drive an hvlp conversion gun. I used to have a 1.75 horsepower Coleman brand compressor that worked very well with my Wagner pressure feed conversion gun.

  8. #8
    Join Date
    Feb 2003
    Location
    Doylestown, PA
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    6,140
    Quote Originally Posted by Joe Jensen View Post
    CFM per HP only works if the HP is spec'd is not the "developed" HP. If the compressor runs on 120V a little over 1HP continuous is all you can get.
    True about the "Sears" HP. (So named because of the 120 volt "6 HP" Shop Vacs) Common movable 120 volt compressors use about 1.5 HP motors and produce about 4.3 - 4.8 CFM so yeah, about 3 CFM/HP. I image the higher priced better engineered machines are a little more efficient.

  9. #9
    Join Date
    Nov 2007
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    olmsted falls,ohio
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    Thanks everyone.i feel better making a decision from here.

  10. #10
    Join Date
    Dec 2006
    Location
    Porter,TX
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    1,279
    I have never purchase from these people but hear lot of good things https://homesteadfinishingproducts.com/ they would be able to recommend spray equipment for your compressor.

  11. #11
    I've sprayed with this gun via a pancake compressor before: https://www.harborfreight.com/20-oz-hvlp-gravity-feed-air-spray-gun-62300.html
    You can't spray continuous with it but I have sprayed a bookcase before without stopping. I expect your compressor is bigger than the one I used so gauge your needs accordingly.
    PS that gun works great especially for the low price. One thing I'd suggest is get the metal can for it and that makes it complete.

  12. #12
    Join Date
    Nov 2007
    Location
    olmsted falls,ohio
    Posts
    454
    Carroll I actually talked to Jeff at homestead they are local to me .jeff helped me get a lvlp set up .great guy to talk with.

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