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Thread: sagging fiberglass seat shell

  1. #11
    rocketman2tm's Avatar
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    Default Re: sagging fiberglass seat shell

    I am looking to go the route of a fabric strap, but how do you secure the fabric strap to itself? I am worried about the joint coming apart.
    John Grueter
    N188LR
    Kenosha, WI
    Series 7 Super Sport - flying!

  2. #12
    Administrator DesertFox4's Avatar
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    Default Re: sagging fiberglass seat shell

    Ahh, you answered my thoughts DF4. I am about to add some blocks under my seats even though they have the built in boxes. However, (question to all) are there any know cases of the newer seat pans ( with the boxes built in) cracking?
    Ross, I've heard of no instances of the new seats having those issues.


    DesertFox4
    Admin.
    7 Super Sport
    912 ULS Tri-gear


  3. #13
    Agfoxflyer's Avatar
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    Default Re: sagging fiberglass seat shell

    "I am looking to go the route of a fabric strap, but how do you secure the fabric strap to itself? I am worried about the joint coming apart. "

    I cut holes in the strap, wrapped around a tube and secured with a hose clamp. Work well.
    David E.
    Woodstock, Georgia
    N97DE S5 TD Flying

    N97KE RV-9A Sold
    N96KE RV10 Sold
    Rans S21 Helping Brother Build (Selling)
    Vans RV-14A (On Order)

  4. #14
    Senior Member jiott's Avatar
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    Default Re: sagging fiberglass seat shell

    Double the fabric over and use rivets with backup washers.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  5. #15
    Senior Member
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    Default Re: sagging fiberglass seat shell

    Someone posted a picture of the bottom of their seat shell, they had bolted what looks like a small 6 inch piece of 1" X 2" board to the bottom of the seat shell. What's nice about that is when you pull the seat out for inspection & maintenance they come with the seat, and don't get in the way. I can't find the picture maybe who ever posted it can post the link.
    Paul Zimmermann
    LSRM-A
    Garland, Texas

  6. #16
    Administrator DesertFox4's Avatar
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    Default Re: sagging fiberglass seat shell



    DesertFox4
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    7 Super Sport
    912 ULS Tri-gear


  7. #17
    Senior Member
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    Default Re: sagging fiberglass seat shell

    Yes, a very cheap, easy to install, secure fix to a problem.

    Thanks for posting it Steve.
    Paul Zimmermann
    LSRM-A
    Garland, Texas

  8. #18

    Join Date
    Apr 2013
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    Hillsboro, NH
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    Default Re: sagging fiberglass seat shell

    I fixed the seat sag in my Mod 2 with 2" webbing & "sliders" that allow infinite adjustment - easy to do, too.
    Attached Images Attached Images

  9. #19

    Join Date
    Apr 2013
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    Hillsboro, NH
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    Default Re: sagging fiberglass seat shell

    One more item - if you ever were to have an extremely hard off field landing, I would think that a sling reinforcing the seat would be less likely to cause damage to your backside than small area supports like wood blocks. Seat belt webbing does stretch with high loading.

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