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Thread: Horizontal Tail interference with Rear Stab Pivot Mount

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  1. #1
    Denalifox's Avatar
    Join Date
    Feb 2019
    Location
    Palmer, Alaska
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    117

    Default Re: Horizontal Tail interference with Rear Stab Pivot Mount

    its a common issue. You just need to remove a bit of material from the bracket to allow it to fit. Mine did the same thing.
    S7 STi O-320 currently flying

  2. #2
    Senior Member
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    Nov 2008
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    KDKB (Dekalb, Illinois)
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    651

    Default Re: Horizontal Tail interference with Rear Stab Pivot Mount

    yeah grinding the bracket seems logical, you have plenty of material to work with

    Jeff

  3. #3

    Thumbs up Re: Horizontal Tail interference with Rear Stab Pivot Mount

    Thanks for the replies guys. I couldn't find anything on this problem so it's good to hear others have faced this. Misery loves company! I'll gradually take off some from the bracket till it clears and make sure it's a smooth transition. I'll post a some pictures when it's done for future reference.
    Greg Anderson
    7SS in "production" : https://eaabuilderslog.org/?s=ganderson
    Richland, WA

  4. #4

    Default Re: Horizontal Tail interference with Rear Stab Pivot Mount

    OK, finished the trim to stop the binding. I trimmed 0.030" on the starboard side and 0.025" on the port. Used a Dremel sanding wheel and cleaned up with 400 grit sandpaper. Per AC 43-13 1B, Par. 6-115 c, blended the trim at 20:1.
    (Dang! Took me 20 minutes to get the pictures right! )

    IMG_5543.jpgIMG_5544-1.jpg
    Greg Anderson
    7SS in "production" : https://eaabuilderslog.org/?s=ganderson
    Richland, WA

  5. #5
    Senior Member Delta Whisky's Avatar
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    Dec 2017
    Location
    Amissville, VA
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    639

    Default Re: Horizontal Tail interference with Rear Stab Pivot Mount

    Thanks forum!! DenaliFox's comment that this is a common issue caught my attention. In preparing for the flight to Sun-n-Fun (assuming the weather god's allow) I thought: "Why not check for this condition?". It turns out that I hadn't detected the itsy, bitsy, just-barely-makes-contact condition during assembly but it was there none-the-less. I've scheduled very minor surgery for tomorrow morning.

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