12 – Empennage Fairing & Gap Covers Part 2

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Once the fairing attachment holes have been final drilled #27, they are machine countersunk for #6 flush screws.

Doing as many as possible in situ provides firm location for the bit pilot.


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Since I had installed all the forward nutplates ages ago for easy access, I had to remove the fairing to machine those holes.

I clamped a guide behind to locate the bit pilot.


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I used a screw and nut to locate the nutplates …


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… for match drilling.


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The nutplate attachment holes are dimpled in the tailplane, and machine countersunk on the fin. The fin skin is thicker.

Read the manual carefully!

I stupidly and accidentally machine countersunk the tailplane as well! Now dimples are generally stronger than machined holes, and I was concerned about this in case these nutplate attachment holes were important in the tailplane top skin stress calculations … but a call to Vans revealed that it’s not an issue … phew!

This was a sobering lesson, because at this stage of the build it’s easy to scan the manual and think you understand it all!

So I say again …

Read the manual carefully!


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Then the edges are marked for final trimming, ensuring that the hole/edge distances are satisfied as per the manual.

I used tape, finding it easier to follow amid all the dust when …


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… using a cutting disc.


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A sandpaper block soon fine tunes the edge.


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The last job is to mark any gaps along the edges, and fill any with rein/flox.

Using sellotape as a release agent on the metal skin, as per the manual advice, worked just fine.

It was quite easy to do, so I filled areas along the front edge, tailplane leading edge and …


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… the fin leading edge.


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Once the resin has set and cleaned up with a sanding block, the result is a well fitting fairing.


After a coat of resin along the inside areas that touch the metal skins, in order to seal in the weave, all the Empennage Fairings were all done : )

Next job … the wing tips

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1 Comment on "12 – Empennage Fairing & Gap Covers Part 2"

  1. Beautiful as always.

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