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Thread: Vne for KF model 4/1200

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  1. #1
    WISDAN's Avatar
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    Default Vne for KF model 4/1200

    I'm currently using a Vne of 125 mph flying my 4/1200 with 32 ft wing span. What's the groups thoughts on this? I'm currently cruising at 110-115 mph indicated.
    Dan G.
    Model IV 1200 - Tri-gear
    Jabiru 2200
    Flying

  2. #2
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    Default Re: Vne for KF model 4/1200

    My first question is this: How accurate is your ASI? Second is: What does Kitfox say the VNE supposed to be on the Kitfox 4? JImChuk

  3. #3
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    Default Re: Vne for KF model 4/1200

    My pilot handbook, if I remember correctly, says 120 mph for the standard model 4 1200 and 140 mph for the Speedster. I assume the airfoil shape of the tail surfaces of the Speedster handle higher airspeed a little better than the standard model 4's flat surfaces. James Thomas

  4. #4
    Administrator DesertFox4's Avatar
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    Default Re: Vne for KF model 4/1200

    My understanding is it has more to do with the thickness of the windshield material.


    DesertFox4
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  5. #5
    WISDAN's Avatar
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    Default Re: Vne for KF model 4/1200

    Thanks for the replies. My ASI is correct. I don't plan on faster than 120mph but when I got my kit vne was listed at 125 in my limitations (skystar). Of course we keep speeds down in rough condions.
    Dan G.
    Model IV 1200 - Tri-gear
    Jabiru 2200
    Flying

  6. #6
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    Default Re: Vne for KF model 4/1200

    You're probably right DesertFox4 about the windshield thickness. I just figured the airfoil tail surfaces might be less likely to flutter at higher speeds. I do remember that the Speedster called for a thicker windshield. I suspect we're both right. James Thomas

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