Tools, Rudder Stiffeners, Riveting, and Spar

First thing’s first. I had a couple tool orders show up today. ATS delivered 100 3/32″ clecos, some aviation snips, a flush set, a step drill, and an edge-rolling tool.

ATS box!
Aviation snips and the step drill
Tools!

The rudder skin had been previously matchdrilled, deburred, scuffed and dimpled. It was ready for primer.

Primed stiffener mating surfaces.

Of course the majority of the 4.0 hours I spent working on this today was in stiffener prep (which needed the aviation snips) and I did’t take any pictures…

But once they were done, I got them primed and ready for backriveting.

Stiffeners laid in place but not yet riveted.

Then, let’s get to backriveting. The 3/8″ by 2″ by 36″ steel bar I bought from home depot works great. This was a fast and easy fix, but I do like the idea of getting a true backrivet plate to embed in the workbench at some point.

The right rudder stiffeners riveted.

Left stiffener rivets ready to receive their stiffeners. After riveting, I figured I would show off the smooth exterior of the rudder skin.

After removing the blue vinyl from the interior of the rudder skin.
After backriveting, the left side of the rudder looks great.
Right side of the rudder looks great, too.

Alright, let’s move to the spar. Where is that BLASTED spacer? (swings arms wildly looking for a part I fabricated yesterday).

Dropped most of my workbench tools while I was looking for one of the spar spacers… ugh.

Back to the spar, the instructions have you start clecoing all these parts together. After breaking the edge of the upper part of the rudder horn, these parts fit together like a glove!

After rounding the edge of the rudder horn, it all assembles nicely.
I had a heck of a time getting this nutplate clecoed in place for matchdrilling.
The spar and end rib ready for the next step

4.0 hours today with 200 rivets set. Pretty good day!

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Author: Andrew

I'm too lazy to fill this out. If you are actually reading this, send me a message, and I'll spend some effort on it.

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