Anyone run dissimilar compressors in tandem?

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  • dbhost
    Slow and steady
    • Apr 2008
    • 9523
    • League City, Texas
    • Ryobi BT3100

    #31
    Okay, so here is the situation...

    Assuming running the 29 gallon compressor only that is...

    4.5' up the wall from the regulator to the ceiling.

    4' across the ceiling to where I want to mount the reel.

    That means buy 1 10' piece of black iron, have it cut and threaded twice.

    $10.62 for pipe.

    Probably say $10.00 for cut and thread. That is overstated drastically.

    $1.54 each for 1/2" black iron elbows. would need 2? One for the ceilign to wall, one to drop from ceiling to reel. Could bypass the second and just reduce down with a bell reducer to 1/4" and feed the reel off of a short hose, why make the extra bend to save 6" of hose?

    $1.54 for a 1/2 to 1/4" bell reducer.

    $1.97 for a 1/2" black iron tee.

    $1.01 for a 1/2 x 3/8" black iron bushing.

    $1.74 for a 3/8 x 3" black iron nipple.

    $8.86 for a ball valve. Down pipe to be sourced as an added cut / thread from the original 10' section.

    That means I have a total of $35.31 assuming paying generously for cut / thread at the hardware store. (When I did that we charged $1.00 per cut / thread, I will need 2 maybe 3 cuts, 4 threads...)

    That would eliminate the possibility of having the hose between the compressor, and the reel as a bottleneck.

    HOWEVER, I could also...

    #1. Pull the hose connecting the 8 gallon compressor, and TRY to see if it is long enough to make the connections needed, or if the regulator could be moved up slightly to make it work.

    #2. Sacrifice the 50' PVC / rubber blend hose to make a 10' hose, shove it between the regulator / filter and call it good At least until that hose fails, and I would have enough spare to make 4 more of those hoses...

    The advantage of cutting the blend hose is, is I would only end up spending like $4.00 on hardware now.

    The disadvantage to either hose approach is the potential and reported friction losses in the hose between the regulator and the reel. I don't see a huge problem there, but it could be an issue. Also longevity of the hose is suspect at best. Perhaps for a home workshop setup it would work for decades. I kind of doubt it...

    From an ease of installation perspective. the hose thing sounds good. But I am concerned about performance. Honestly I don't see any big difference between 50' of hose, and 58' of hose (61' between compressor and end of reel hose).
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    • JimD
      Veteran Member
      • Feb 2003
      • 4187
      • Lexington, SC.

      #32
      I think the advantage of running piping is primarily if you want to tie in both compressors. The added area of the pipe would accomidate the supply of both compressors at once. If you install pipe, particularly black iron, I believe it is also highly recommended that you have a short section going down towards the floor as a moisture trap.

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      • dbhost
        Slow and steady
        • Apr 2008
        • 9523
        • League City, Texas
        • Ryobi BT3100

        #33
        Yeah, for now I believe I have made it a moot point. I am pretty sure I got the issues sorted. I have the reel connected to the regulator / filter / moisture trap via the 8' hose, and the other way from the compressor to the regulator / filter / moisture trap via the 3' hose. The tee has been removed,

        Since the plastic bits, which I am now thinking was teflon tape, blew out of the exhaust port, the impact wrench when I pull the trigger free spinning (not on a bolt, haven't had that opportunity yet) will nearly torque the wrench out of my hands. MUCH more oomph than the old Blue Point I had that got stolen... I am pretty sure I have it sorted now. All hoses 3/8", 3' from compressor to filter / regulator / dryer, 8' from there to reel, and 50' on the reel. Total of 61' of hose.

        I do want to at least grab a cheap inline gauge to verify pressure at the end of the hose so I can fine tune my regulator settings. But. for now, I think it is just fine tuning / OCD part of me that wants to go that far. The tools appear happy on the end of the hose, and at the end of the day, if they work well with the air supplied, who cares what the numbers are?
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