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Thread: Davidís STI Build N413KF

  1. #11

    Join Date
    Sep 2020
    Location
    Hadley, MA
    Posts
    21

    Default Re: Davidís STI Build N413KF

    3.1 more hours on inventory today.

    Completed the inventory of the kit.

    Missing items:
    91148.000 Washer Flat AN960-10L missing 3
    91064.000 Nut Elastic Stop AN364-1032 missing 6
    Both items from the Rudder Pedal Kit

    Waiting on drop shipment of windshield from LP Aero

    Back ordered Items:
    98293.000 3M Scotchseal 560
    65-231 or 131 Wheel & Brake Assy Hvy Duty Dual Piston
    98069.000 Valve Parking Brake Grove

    Emailed missing item list to Kitfox for replacement.



    Sent from my iPhone using Tapatalk Pro

  2. #12

    Join Date
    Sep 2020
    Location
    Hadley, MA
    Posts
    21

    Default Re: Davidís STI Build N413KF

    First day actually working on the airplane! 1.5 hours to pull all the hardware for the horizontal stab and elevator section, try to do some reaming, realize it wasnít that easy and I needed to modify the reamer as others have mentioned here. Ended up grinding it down with an angle grinder until it was small enough to get a box wrench on the end. Painters tape came in handy to prevent scratching the finish on the elevator and stabilizer.

    Not sure why they send a reamer that is supposed to be chucked when you can only really use a drill to get a couple locations (unless youíre ok with reaming crooked) but thatís ok all part of the fun of using some creativity.

    Looking forward to my first attempt at hysol tomorrow on the ribs!




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  3. #13

    Join Date
    Sep 2020
    Location
    Hadley, MA
    Posts
    21

    Default Re: Davidís STI Build N413KF

    I got half of the ribs fitted on the horizontal stabilizer I sanded by hand and went slowly not knowing what I was doing exactly. 7 out of this 9 I added rib stiffeners to prevent warping. The other two are against metal so no need there. It was my first attempt at Hysol ... Mixed up way too much but I guess thatís part of the learning process. I was conservative with the amount I used. Going to let these ribs cure and tomorrow start on the other half but I think with the dremel sanding drums this time now that I know what Iím looking for.


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  4. #14
    Senior Member bbs428's Avatar
    Join Date
    Jan 2015
    Location
    Webb City, MO
    Posts
    368

    Default Re: Davidís STI Build N413KF

    The fun begins! Sure like the black powder coat.
    Somebody said that carrier pilots were the best in the world, and they must be or there wouldn't be any of them left alive. ó Ernie Pyle

    Brett Butler
    Building: Model 5 Outback with 7 mods

  5. #15
    Senior Member Kitfox Pilot's Avatar
    Join Date
    Aug 2019
    Location
    Spring Garden Illinois
    Posts
    236

    Default Re: Davidís STI Build N413KF

    You are started, good luck. Just keep doing one page at a time is what they told me. I'm still at it ..... You learn a lot, right after your done lots of times. haha
    Harlan and Susan Payne
    Flying Piper Archer
    Building STI Kitfox N61HP
    Engine and prop are undecided
    https://www.youtube.com/channel/UC5A...oCVUP15G0uB-Yw

  6. #16
    patrick.hvac's Avatar
    Join Date
    Jul 2018
    Location
    Alberta
    Posts
    35

    Default Re: Davidís STI Build N413KF

    Woah the rudder has pre-welded supports now? I was wondering when the airfoil design would become a weldment. Hopefully that gets expanded to all the pieces that require airfoil.
    I saw a highlander not too long ago with a welded airfoiled tail and thought they were on to something great.
    🇨🇦CANADA
    Building | SS7 | G3X | 912
    Flying | Tin Can

  7. #17

    Join Date
    Sep 2020
    Location
    Hadley, MA
    Posts
    21

    Default Re: Davidís STI Build N413KF

    About three hours today checking the fit of the horizontal stabilizer ribs, sanding, scotchbrite on the frame in the area they would be hysoled to. Cleaned everything up with alcohol let that dry and started with the hysol checking measurements as I went. First thing I realized is that my fat fingers result in anything but a ďneatĒ appearance of the hysol although it got a bit better as I went. Iíve done a lot of painting and caulking in my time which turns out nice but this is a little different working with the angles of the ribs and frame and tight spaces. Cleaned up the excess with a rag with a bit of alcohol on it so it wouldnít look like a complete disaster but didnít sweat it too much since my main concern was that the ribs were firmly attached and straight. No one will ever see any of this again after the Oratex is on!

    I ordered a 36 inch piece of balsa from Aircraft Spruce yesterday which I plan to use on the stabilizer and elevator wingtips. Iím flying a trip the next couple days so I will let this harden up and then move on to the elevator when I return.




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  8. #18

    Join Date
    Jul 2018
    Location
    Westfield, IN
    Posts
    161

    Default Re: Davidís STI Build N413KF

    Good luck on the build!!

    Hopefully you lined up the ribs on the elevator before you glued those down on the HS so that you are sure they will line up with each other. On mine, I measured like the manual said originally but if I had secured them that way the ribs would not have lined up identically with each other between the elevator and HS.

  9. #19

    Join Date
    Sep 2020
    Location
    Hadley, MA
    Posts
    21

    Default Re: Davidís STI Build N413KF

    I did I had to shift the HS ribs in two locations slightly from the book measurements to make sure that they would line up with the elevator ribs and not be blocked by the metal components.

  10. #20

    Join Date
    Feb 2020
    Location
    Tacoma, WA
    Posts
    146

    Default Re: Davidís STI Build N413KF

    Quote Originally Posted by iflywhatevr View Post
    I got half of the ribs fitted on the horizontal stabilizer I sanded by hand and went slowly not knowing what I was doing exactly. 7 out of this 9 I added rib stiffeners to prevent warping. The other two are against metal so no need there. It was my first attempt at Hysol ... Mixed up way too much but I guess thatís part of the learning process. I was conservative with the amount I used. Going to let these ribs cure and tomorrow start on the other half but I think with the dremel sanding drums this time now that I know what Iím looking for.


    Sent from my iPhone using Tapatalk Pro
    Yesterday was the first time I ever mixed up the correct amount of Hysol. And yes, the technique of not getting it all over the place takes a few tries. I'm certainly glad it all gets covered up.
    Kitfox 5 (under construction)
    Citabria (flying)
    Commercial SE/ME, CFII

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