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  1. #1

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    Yellow Zero Flap Retrofit

    I will be installing flaps on a Yellow Zero that was already built and the flaps were omitted. Don't know why, but these will help in landing this already heavy fighter. I have outlined the flap area using Yellows guideline. I plan on using the flap skin that I removed thus eliminating any repainting.
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  2. #2

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    RE: Yellow Zero Flap Retrofit

    OK, already have a change in plans. After cutting out the perimeter of the flap outline. There was no way of removing the skin from the foam in one piece. I forgot how tightly the skin was glued to the foam. Had to remove everything by gouging out the foam and sheeting. Will be building new flaps with ply and ribs. I do have the flap pockets cleaned out.
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  3. #3
    ccostant's Avatar
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    RE: Yellow Zero Flap Retrofit

    Hi Fred,

    The flaps on my YA zero were balsa sheet with the correct airfoil shape. I think ply with ribs is actually more scale anyway. Go for it.

    Carl

  4. #4

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    RE: Yellow Zero Flap Retrofit

    Hi Carl,
    I have to do the built up flaps since I don't have any airfoil balsa sheet. I think they will look better. I made the leading edge sheet for the flaps. I glued on the hinge blocks and made pockets in the wing to fit everything in. Side formers are glued in also. Ready to make the flaps.
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  5. #5
    Tony Gag Jr.'s Avatar
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    RE: Yellow Zero Flap Retrofit

    Looks great Fred. You make this stuff look way too easy!!!!

  6. #6

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    RE: Yellow Zero Flap Retrofit

    Thanks Tony, I've had a lot of practice working on your airplanes. LOL. This is not my plane, I'm doing the work for another friend Dan Carlson from Indiana.
    Later,
    Fred

  7. #7

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    RE: Yellow Zero Flap Retrofit

    OK, Made the flap blanks out of 1/16 ply. Layed out the rib location. Glued on the leading edge and ribs.
    Starting to look like flaps!!
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  8. #8

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    RE: Yellow Zero Flap Retrofit

    Flaps rough sanded and dry fitted.
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  9. #9

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    RE: Yellow Zero Flap Retrofit

    Got the first servo pocket cut. Will be driving the flap internally.
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  10. #10

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    RE: Yellow Zero Flap Retrofit

    Good Job!
    BobH.

  11. #11

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    RE: Yellow Zero Flap Retrofit

    Thanks, Bob.

  12. #12

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    RE: Yellow Zero Flap Retrofit

    Servo pocket lined with balsa and servo mount cap made. Flap is dry hinged
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  13. #13

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    Finishing up this project. Servos are mounted and linkages are made. Made a plywood horn and the clevis hole has a piece of nyrod glued in for a bearing surface. Flaps are dry hinged for fit. Glassing and finishing next,Click image for larger version. 

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    Last edited by Check6; 08-07-2013 at 04:01 AM.

  14. #14

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    if you make a post the 3rd icon on the top of the message box from R-L is the image location click that and you can load pics

  15. #15

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    Thanks Tim,
    Here are some with the flap installed and clevis attachedClick image for larger version. 

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  16. #16

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    Flap retrofit is completedClick image for larger version. 

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