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Thread: Flap handle lock

  1. #1
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    Default Flap handle lock

    I everybody,,,,did he have a lock on flap handle if it's yes somebody can show me how it work or the plan,





    Jf

  2. #2
    Senior Member chefwarthog's Avatar
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    Default Re: Flap handle lock

    Good morning Jean-François, to your question yes there is a locking device on the flaperons handdle, at full flaps 20° for experimental and 15° for S-LSA if I am not mistakeking, for the middle range I am not sure, if some body can fill the blanks it could be enriching.....

    For the way it works, I fond this little video, look at 4 min to 4.30 min and I will let Dan Johnson & Paul Leadabrand comment on it.

    http://www.youtube.com/watch?v=ako2oGt5Y8k

  3. #3
    Senior Member HighWing's Avatar
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    Default Re: Flap handle lock

    jean-francois,

    On your Model IV from the factory, no. The flap handle is held by friction only. At the handle pivot, there are large round washer like disks welded in. The idea is to put similar sized leather disks and tighten until there is enough friction to hold the flaps in the desired location. It works pretty well, but will require tightening from time to time.
    Lowell

  4. #4
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    Default Re: Flap handle lock

    Thank's a lot Highwing,,that's what i have,,,,and it's ok to hold the flap

    And the system with the bouton can fit on my model(i love bouton):

    If it's not to bad.....

  5. #5
    Senior Member dholly's Avatar
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    Default Re: Flap handle lock

    Can always D.I.Y. (make your own).
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  6. #6
    Super Moderator Av8r3400's Avatar
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    Default Re: Flap handle lock

    That's a nice idea and I was planning something similar on Smitty's plane. The down side is you will need to have a trim tab or some other type of trim system other than the flapperons to use this type of setup. Using the flapperons for trim would require an infinite adjustment.
    Av8r3400
    Kitfox Model IV
    The Mangy Fox
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  7. #7
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    Default Re: Flap handle lock

    thank's for plan i will start that soon

  8. #8
    Super Moderator Av8r3400's Avatar
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    Default Re: Flap handle lock

    I eventually settled on something much simpler.

    Av8r3400
    Kitfox Model IV
    The Mangy Fox
    912UL 105hp Zipper
    YouTube Videos

  9. #9
    Senior Member Geowitz's Avatar
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    Default Re: Flap handle lock

    I made my own detent style similar to the drawing already posted. Works great. Detents were'nt yet notched out in this pic. Wood knob on top was bought at a craft store and is relieved to fit over the flap handle with enough clearance to depress the spring. Small allen head bolt sticks out side of dowel and flap handle to engage detents. Bracket is 2 inch alum angle radiused to match and adele clamped to frame.
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  10. #10
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    Default Re: Flap handle lock

    I took the easy way out and bought the new one that KitFox Aircraft now has available. Handle is spring loaded into the detents. Really easy to install with a couple of hose clamps.
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