Kitfox Aircraft Stick and Rudder Stein Air Grove Aircraft TCW Technologies Dynon Avionics AeroLED MGL Avionics Leading Edge Airfoils Desser EarthX Batteries Garmin G3X Touch
Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: Flaperon mixer bolt safety wire

  1. #1

    Default Flaperon mixer bolt safety wire

    Hi All,
    I searched the forums and couldn't find a post that covered this subject.

    I'm safety wiring the bolt to connect the flaperon mixer assembly to the airframe. The manual says to wrap the wire around the shaft of the flap bellcrank. Below is what I'm thinking for this. I'm using cheap copper wire for practice so this is not the final wrap. How does it look? I can find tons of info on safetying but not something like this.
    Attachment 24999
    Attached Images Attached Images
    Greg Anderson
    7SS in "production" : https://eaabuilderslog.org/?s=ganderson
    Richland, WA

  2. #2
    Senior Member Delta Whisky's Avatar
    Join Date
    Dec 2017
    Location
    Amissville, VA
    Posts
    637

    Default Re: Flaperon mixer bolt safety wire

    Greg - that's how I did it. I'm working from memory here but I went back and did that safety wire task again when I noticed the bolt stayed put until the safety wire forced it to turn. I'm pretty sure that the wire should ensure the bolt stays put in regards to the weldment to which it is tied - to make sure the movement occurs where it is supposed to. Probably wouldn't make a difference in the life of either the plane or the owner but my CDO kicks in once in a while.

  3. #3
    Senior Member PapuaPilot's Avatar
    Join Date
    Nov 2013
    Location
    Nampa, Idaho
    Posts
    1,225

    Default Re: Flaperon mixer bolt safety wire

    Why wouldn't you just use a cotter pin? That is the standard practice with a bolt and castle nut.
    Phil Nelson
    A&P-IA, Maintenance Instructor
    KF 5 Outback, Cont. IO-240
    Flying since 2016

  4. #4
    Senior Member
    Join Date
    Apr 2009
    Location
    Chisholm Mn
    Posts
    1,562

    Default Re: Flaperon mixer bolt safety wire

    I was thinking the same thing, and trying to remember what I did on the 2 Kitfox 4s I've set up. Looked in the Kitfox 4 manual, and it shows the bolt going the opposite way, and having a castle nut and cotter pin. Wonder what they learned to change it., JImChuk

  5. #5
    Senior Member efwd's Avatar
    Join Date
    Jun 2015
    Location
    Yorba Linda, CA
    Posts
    2,817

    Default Re: Flaperon mixer bolt safety wire

    That is how mine is done.
    Eddie Forward
    Flying
    SS7, 912iS, Garmin G3X

  6. #6
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,960

    Default Re: Flaperon mixer bolt safety wire

    Quote Originally Posted by Delta Whisky View Post
    Greg - that's how I did it. I'm working from memory here but I went back and did that safety wire task again when I noticed the bolt stayed put until the safety wire forced it to turn. I'm pretty sure that the wire should ensure the bolt stays put in regards to the weldment to which it is tied - to make sure the movement occurs where it is supposed to. Probably wouldn't make a difference in the life of either the plane or the owner but my CDO kicks in once in a while.
    I think DW has it. The weldment with the safety wire has very small bearing area around the bolt, so you don't want the movement/wear at that point. The airframe has much more bolt bearing area, so grease this area and force the bolt to turn there. My 2 cents.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  7. #7
    Senior Member 109JB's Avatar
    Join Date
    Mar 2019
    Location
    Morris, IL
    Posts
    484

    Default Re: Flaperon mixer bolt safety wire

    The bolt should go in from that side. Not the nut. Once fabric is on I don't think you would be able to remove the bolt without cutting fabric if you had to.
    John Brannen
    Morris, IL
    Sonerai IIL (Single Seat)
    Kitfox 3/4 1050 - Rotax 582 (Back Flying and sold)
    Kitfox IV 1050 - Rotax 582 (sold)
    Kitfox IV 1200 Speedster - Rotax 912 UL (project)
    Piper Twin Comanche (Sold)
    Glasair 1 FT (Waiting to start)

  8. #8
    Senior Member efwd's Avatar
    Join Date
    Jun 2015
    Location
    Yorba Linda, CA
    Posts
    2,817

    Default Re: Flaperon mixer bolt safety wire

    If I ever need to remove that bolt I will cut the bolt head off before I cut any fabric.
    Eddie Forward
    Flying
    SS7, 912iS, Garmin G3X

  9. #9
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,960

    Default Re: Flaperon mixer bolt safety wire

    Quote Originally Posted by 109JB View Post
    The bolt should go in from that side. Not the nut. Once fabric is on I don't think you would be able to remove the bolt without cutting fabric if you had to.
    I don't think so; that would defeat the purpose of the safety wire-see my post below.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  10. #10
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,960

    Default Re: Flaperon mixer bolt safety wire

    Its all clear in the assembly manual for the SS7: Fuselage Assembly, Section B, page 26, step 70. It agrees with Delta Whiskey's assesment.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •