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  1. #31
    Registered WeaponX's Avatar
    My Boats:
    2400 HP nightmare.
    Join Date
    Feb 2005

    Re: Cat Length question

    Quote Originally Posted by CigDaze
    I don't know where the 2.5" is coming from, whether it's the tips of the sponsons or the transom which would affect the tunnel and airfoil, but either way we're talking about a difference of 0.5%. Say it is in the tunnel area, lift and drag behave linearly with surface area as defined by L (or D)=1/2 * rho * V^2 * S * Cl (or Cd), where rho=density, V=velocity in fps, S=planer area in sqft, and Cl=coefficient of lift (or drag). Again, 0.5% differences...maybe.

    After running a quick CFD comparison, I see no appreciable difference.
    What does all this have to do with a treadmill????

  2. #32
    Platinum Member Platinum Member CigDaze's Avatar
    My Boats:
    Cigarette 35 Cafe Racer
    Join Date
    Jun 2001
    St. Petersburg, FL

    Re: Cat Length question

    Quote Originally Posted by 3600cat
    What does all this have to do with a treadmill????

    If boat A is 2.5" shorter than boat B and they're traveling in exactly opposite directions on a head-on collision course while on a section of the Mississippi River with a 10 mph current and both of their GPS's indicate 100 mph, what is their closing speed with regards to one another? What would each water pitot speedometer read. assuming they're accurate?

  3. #33
    OSO Content Provider Commercial Member SHARKEY-IMAGES's Avatar
    Join Date
    Jun 2001

    Talking Re: Cat Length question

    Quote Originally Posted by Steve Miklos
    Closing speed 200 MPH

    Speedo 1 =90
    speed0 2 =110

    Do I win?
    I must of missed the part where they said you were in 1 boat and BS was in the other......

    Digital Photography & Video one BYTE at a time !

  4. #34
    Mod Squad Enforcer Charter Member Cash Bar's Avatar
    My Boats:
    2009 Skater 3212-- MAD PROPS
    Join Date
    Nov 2002
    On the way to a PR near you

    Re: Cat Length question

    BS is definitely the one in the wrong lane.....
    Your OSO connection to great S. Florida Real Estate.

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