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Flap Brackets

Updated 12/1/2020: Watch the 3D printed flap bracket installation video I made here: https://youtu.be/4v0zpSS4QO8

These are hard to find so I designed and printed a few. They came out pretty nice I think. Plastic is ABS so they’ll withstand the temps and I printed a set in flex filament. They came out nice. They are there to keep you from scalping yourself when you walk under the wing.

I understand the factory put these on the 108-3 models only. I’m not sure if that’s accurate as one guy I spoke with has them on his 108-1.

Now I’m making a mold so I can make them out of rubber. I’m using a rubber with a hardness or shore value of 80A. Hard, but flexible. It should prevent scalping yourself. Is there a market for these?

Screw and nut hole covers installed. These are printed in draft mode so the quality is not perfect.
All three hinges installed. The first one has the screw holes installed.
The two halves snap together here, but I’m currently printing a set that use screws to secure the halves together without drilling any holes in the flap hinge. The outermost flap hinge requires an additional opening for the end bolt. That rectangle hole is there for water to escape. The end is open for inspecting the flap attach point. These are printed in draft mode so the quality isn’t professional at this point.
Two holes for screws to keep the two halves together.
What the originals look like.
Flap hinge with holes for mounting. Mine do not have the holes.
Looks like polished aluminum to me. They look like originals.
Someone’s Stinson with 3D printed hinges. Notice the mounting holes. It looks like they printed them with FLEX filament.

6 thoughts on “Flap Brackets”

    • jeffrey892's avatar

      I believe you are correct. My 108 doesn’t have the two holes in the flap hinge to mount the covers, so these are designed for 108’s that don’t have the holes. They should work on 108’s with or without them. I didn’t want to drill holes in the hinge.

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  4. Anton Koprivnik's avatar

    Greetings Jeff,
    As a person who received three stitches in my scalp due to these hinges, I would like to purchase a set for my 108-1. Please advise availability and price.
    Cheers,
    Anton Koprivnik

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