Steve and Dave Clarks UFO

Discussion in 'Multihulls' started by Doug Lord, Aug 24, 2016.

Page 6 of 8
  1. oldsailor7
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    oldsailor7 Senior Member

    Doug. That C-Fly looks remarkably like a modern version of "Williwar" ;)
     
    oldsailor7, Sep 17, 2016
    #76
  2. Doug Lord
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    Doug Lord, Sep 17, 2016
    #77
  3. Skyak
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    Skyak Senior Member

    Note; The spring I described adding in series is NOT the spring you have today holding the wand against the waves. Adding the spring and damper I described might lower the force needed from the wand control spring (by isolating the wand from the flap mass and damping) or it might increase the WC spring needed. What I say is certain is that ride height needed is NOT the high frequency bouncing wand I see in all videos.
     
    Skyak, Sep 18, 2016
    #78
  4. hump101
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    hump101 Senior Member

    The reason for the wand and flap system is heave control, so I'm not sure of the basis for your comment.
     
    hump101, Sep 18, 2016
    #79
  5. Skyak
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    Skyak Senior Member

    Heave is height in this context. Sorry, I meant to refer to pitch -my mistake. I will correct it.
     
    Skyak, Sep 18, 2016
    #80
  6. Doug Lord
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    Doug Lord Flight Ready

    Heave/pitch mixing

    It seems to me that it is possible for some wand systems that are located very much forward of the main foil(whose flap they control) to, potentially, in certain conditions, send mixed signals to the flap in response to pitch and not just changes in altitude. So heave control is mixed with pitch response. Some wand systems are very adjustable and can pretty much prevent this from being a problem in most conditions. And boats with twist grip controlled rudder foils can probably avoid it altogether.
     
    Doug Lord, Sep 18, 2016
    #81
  7. Doug Lord
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    Doug Lord, Oct 3, 2016
    #82
  8. Doug Lord
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    Doug Lord, Oct 11, 2016
    #83
  9. Doug Lord
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    Doug Lord Flight Ready

    UFO-could be THE Peoples Foiler!

    =================
    Just got an update from Dave and corrected the takeoff windspeed above from 8 knots to 6 knots. And he says "in any windspeed above 4 knots you should drop in the lifting foils with the intent to plane with assist, and then, skill permitting, fly".
     
    Doug Lord, Oct 26, 2016
    #84
  10. Doug Lord
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    Doug Lord, Oct 27, 2016
    #85
  11. BobBill
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    BobBill Senior Member

    Complicated slamming around one, two, three hulls up just not my cuppa...
     
    BobBill, Oct 29, 2016
    #86
  12. Doug Lord
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    Doug Lord Flight Ready

    Wow, Bill-- think you got that right? What in the world is "complicated slamming"?
     
    Doug Lord, Oct 29, 2016
    #87
  13. BobBill
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    BobBill Senior Member

    Well, foilers are a bit more complicated than most rigs...wand etc.

    And, I used to have a boat that would go airborn...water upon return is not so soft...believe it.
     
    BobBill, Oct 29, 2016
    #88
  14. Doug Lord
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    Doug Lord Flight Ready

    Doug Lord, Nov 14, 2016
    #89

  16. Doug Lord
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    Doug Lord Flight Ready

    Doug Lord, Nov 18, 2016
    #90
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