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Thread: New KF2 Build: What needs to be done to Upgrade to 3 or 4?

  1. #1

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    Question New KF2 Build: What needs to be done to Upgrade to 3 or 4?

    To anyone with KF2 knowledge/experience:

    What would you do to improve the airframe to increase GW and flying characteristics?

    I currently have a 90 build KF2 and only have about 8 hours on it so far. I have an opportunity to acquire a KF2 kit that is ready for covering. Can anyone point me to a thread that deals with upgrades and modifications to the KF2 that would bring it on par with the KF3 or KF4?



    Thanks in advance!

  2. #2
    Super Moderator Av8r3400's Avatar
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    Default Re: New KF2 Build: What needs to be done to Upgrade to 3 or 4?

    To do this you would need to re-manufacture most of the fuselage. You are far better off to start with a 3 or 4 if that is what you want.
    Av8r3400
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  3. #3
    Senior Member av8rps's Avatar
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    Default Re: New KF2 Build: What needs to be done to Upgrade to 3 or 4?

    I agree with av8r3400, it would be more work than it would be worth to try and convert it to a newer model as there are so many significant structural differences.

    A Model 2 is a super lightweight hotrod with a 582 on it, and it can handle a 912 (1st 912 Kitfox was a Model 2), so if it were me I would just keep it nice and lIght and enjoy it the way it is. Those early Kitfoxes and Avids were a lot of fun. They are incredible STOL planes. More like Super STOL than STOL.

    Connect with SkySteve here on the forum. He has a very early Kitfox that he converted to a 912ul and he flies it all over the place, having a blast with it. And as I recall, he flies with a lot of other Kitfoxes, most obviously newer. So don't underestimate the capabilities of older Kitfoxes. The old ones being so light were super fun to fly.

  4. #4
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    Default Re: New KF2 Build: What needs to be done to Upgrade to 3 or 4?

    I agree completely with av8rps. The model 2 is a much different airplane from the model 4's and later models. No better or worse. The model 2 in the attached video belonged to my good friend and it's the plane I had my first tailwheel experience in. It prepared me very well for my model 4/1200/912ul. I had many hours of "unofficial" tailwheel training in it. It made my "official" training with a CFI to get my endorsement much easier. The model 2 was just as much fun as the 4, it takes off and lands shorter but it is slower. A friend had a model 3 with model 4 wings, also a 912ul. I never flew it but according to him it never performed like the true model 4's. See the video. It's pretty Impressive to me. https://www.youtube.com/watch?v=GEomp5N3qxI

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