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Thread: Kitfox model III or IV??

  1. #1

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    Default Kitfox model III or IV??

    Hy guys. Is my first post in this forum. I am an Italian guy from Italy. Actually I fly with a zlin savage cub. Is the plane of my aeroclub. But now I m looking for buy my first light aircraft.
    I have find it... But I m not sure what kind of model it is.
    Can you help me. See the picture attached
    IMG_20190625_202606.jpg

    What are the main difference from model 3 and 4.
    Thanks in advance to those who will be able to help me.

    Miki83.

  2. #2

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    Default Re: Kitfox model III or IV??

    I have also picture of the Wing profile

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  3. #3
    Senior Member rv9ralph's Avatar
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    Default Re: Kitfox model III or IV??

    I'll try to help.

    The model IV had a laminar flow wing, the model III had the under camber wing.

    Another main change, in order to reduce adverse yaw in turns, was to redesign the flaperon mixer. This change, if I remember correctly (if not someone please correct me), required the flaperon pushrod to be disconnected when folding the wings. The model III kept them connected and the flaperon moved to vertical when the wings approached the full rearward position when folded.

    I hope this helps.

    Ralph

  4. #4
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    Default Re: Kitfox model III or IV??

    It's not a 4. Under camber wing make it a 3 or earlier model.

  5. #5
    Senior Member Av8r_Sed's Avatar
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    Default Re: Kitfox model III or IV??

    Most certainly is a Model III with the undercamber wing and the size of the rudder.
    -- Paul S
    Model III SN910
    582 IVO Med

  6. #6
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    Default Re: Kitfox model III or IV??

    Not a Model 4, they have aluminum angles on top and bottom of the wing for flaperon hangers. Kitfox 1-3 have extended plywood rib tails. JImChuk

  7. #7

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    Default Re: Kitfox model III or IV??

    OK thanks to much for the info's. I suspected it was model 3.
    I have read many discussions about the differences of the two models and I have understood that the model 4 is much better.But is model 3 much more complicated to fly? Reading in this forum I got scared

  8. #8
    Senior Member Av8r_Sed's Avatar
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    Default Re: Kitfox model III or IV??

    It’s not harder to fly. The earlier Model I to III undercamber airfoil has an aerodynamic limit that keeps the top speed limited to about 90 mph. The Model IV airfoil gives up very little on low speed performance, but can give better cruise performance.

    If your mission is to fly locally and have good short field performance, either will be fine. Just find the nicest, lightest one you can afford that has the equipment you need.

    A Rotax 912 is generally a better choice over a 582 unless you want to climb the two-stroke learning curve. Other engine choices can be fine, but watch out for the heavy ones like Subaru conversions.
    -- Paul S
    Model III SN910
    582 IVO Med

  9. #9

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    Default Re: Kitfox model III or IV??

    yes my idea was to use it for some local flight. I have the hills near where I live and there are so many fields of 400/500 ft. I am not hurry to find the airplane. I tried to look around.thank again for information

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  10. #10

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    Default Re: Kitfox model III or IV??

    Hello guys.Attached an other picture.the kitfox plate says model 2 but the engine is a 912 rotax. is it possible?

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