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  1. #79
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    Quote Originally Posted by Shreadhead View Post
    If the dip tube is 1/4 “ ID and 1 foot long wouldn’t the math dictate that at even 1000 microns both hoses provide more flow than the dip tube can allow? Meaning both should be the same speed roughly?
    There would be a bigger difference had he tried going lower.

  2. #80
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    Quote Originally Posted by Shreadhead View Post
    If the dip tube is 1/4 “ ID and 1 foot long wouldn’t the math dictate that at even 1000 microns both hoses provide more flow than the dip tube can allow? Meaning both should be the same speed roughly?
    (520 x .25^4 x 1)/1 = 2.03 CFM of conductance speed.

    The hose is rated at 16 CFM, meaning the dip tube even at 1/4" is a huge restriction, and likely it is smaller then that.
    JLB,

  3. #81
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    Quote Originally Posted by jim bergmann View Post
    (520 x .25^4 x 1)/1 = 2.03 CFM of conductance speed.

    The hose is rated at 16 CFM, meaning the dip tube even at 1/4" is a huge restriction, and likely it is smaller then that.
    Duh! Everyone knows that formula... j/k love the education your the man

    'The more you know, the more you realize you don't know'
    ...

  4. #82
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    I just wish mine would get here so I can play with them!
    I took too long to pull the trigger on ordering 2 of the 1.5m starter sets + BluVac+ Pro, and they were sold out already, so I have to wait.

  5. #83
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    Quote Originally Posted by jim bergmann View Post
    (520 x .25^4 x 1)/1 = 2.03 CFM of conductance speed.

    The hose is rated at 16 CFM, meaning the dip tube even at 1/4" is a huge restriction, and likely it is smaller then that.
    Using the same math; How is the True blue hose rated for 16CFM? Or is that at a micron level higher than 1000?

    (520 x .375^4 x 1)/5 = 2cfm @5 feet and 1000 microns.

    My hose:

    (520 x 1^4 x 1 ) / 5 = 104 CFM @ 5 feet and 1000 microns. 1" hose

    Or is my math wrong in some way?



    Sent from my Moto Z (2) using Tapatalk

  6. #84
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    .75"

  7. #85
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    Not .375"

  8. #86
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    Quote Originally Posted by itsiceman View Post
    .75"
    That is correct, and at 5' they are 32 CFM, we should make a conductance speed calculator in the app. We also looked at 1" ID, and it gets to the point of diminishing returns. The speed increase is negligible. What starts to increase at that point is the ultimate vacuum level. As we can already get within a few microns of the pump inlet, going bigger would not have any real benefit. Everything costs more and it is harder to work with.
    JLB,

  9. #87
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    Quote Originally Posted by itsiceman View Post
    Not .375"
    Lol I'm such a doofus.

    Sent from my Moto Z (2) using Tapatalk

  10. Likes heatingman liked this post
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