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  1. #14
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    Sep 2001
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    East Stroudsburg, PA
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    13,215
    Wrongo.....

    [Edited by condenseddave on 02-15-2005 at 01:36 AM]

  2. #15
    Join Date
    Sep 2001
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    East Stroudsburg, PA
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    That one made sense for a minute, now I'm second-guessing that 40% thing. Please stand by.........

    This was the smartest thing I posted on this thread.

    [Edited by condenseddave on 02-15-2005 at 01:37 AM]

  3. #16
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    Aren’t you supposed to be on vacation?

    I say it's D for down shifting. LOL

  4. #17
    Join Date
    May 2004
    Location
    Caldwell, ID
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    395
    (RPM1/RPM2) = (CFM1/CFM2)

    (BHP1/BHP2) = (RPM1/RPM2)^3


    8000CFM/1000CFM = 0.8 = (RPM1/RPM2)

    0.8^3 =0.512 ==> approx 50% ish.

    D.

  5. #18
    Join Date
    Sep 2001
    Location
    East Stroudsburg, PA
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    13,215
    10x(8000/10000)3{Cubed}

    Should be "8" as in 8 hp.

    So, it's 20%

    Pumps are easier.


  6. #19
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    Mar 2004
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    Well I’ll be…..look here, I was right.

  7. #20
    Join Date
    Sep 2001
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    East Stroudsburg, PA
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    Originally posted by clydemule
    (RPM1/RPM2) = (CFM1/CFM2)

    (BHP1/BHP2) = (RPM1/RPM2)^3


    8000CFM/1000CFM = 0.8 = (RPM1/RPM2)

    0.8^3 =0.512 ==> approx 50% ish.

    D.
    OK, that works.....

  8. #21
    Join Date
    Sep 2001
    Location
    East Stroudsburg, PA
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    13,215
    Originally posted by madeinusa
    Aren’t you supposed to be on vacation?

    Only from replying to nonsense threads and posts started by idiots that serve no real purpose. And that will only last until BC1 quits borrowing Don's balls to stop the trouble that they start, and then hightail it out.

  9. #22
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    I agree.


  10. #23
    Join Date
    Apr 2001
    Location
    Camel City, NC
    Posts
    6,232
    The motor is still 10hp.
    Be safe not fast. body parts don't grow back

  11. #24
    Join Date
    Sep 2004
    Posts
    3,157
    condenseddave

    what are your thoughts on Selfemployeds answer?

  12. #25
    Join Date
    Apr 2002
    Location
    Omaha, NE
    Posts
    1,561
    new H.P.=old H.P.(new CFM/old CFM)^3
    =10(8,000/10,000)^3
    =10(.8)^3
    =10(.512)
    new H.P.=5.12H.P., so answer is "D"

  13. #26
    Join Date
    Aug 2003
    Location
    Central Kentucky
    Posts
    6,247
    I have to agree with those who posted D.

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