Monthly Archives: February 2013


Horizontal Stab 10 (1.5 hrs)

I finished the intersection of the front two spars tonight. However there is a mistake that cannot be rectified on the HS-405 rib. I will call Van’s technical support tomorrow to see if putting a rivet in the center of the front flange will be acceptable otherwise I will need to order a new one.

After I completed that I clecoed together the left spars and ribs. I then began to cleco on the skin.  All the match drilling for the ribs and spars is complete and it appears that all the drilling for the skin is also complete. I still need to verify that the previous builder did not miss any holes.

Here are some pictures of the HS-405 mistake that I’ve made.  I will post more tomorrow.  I measured the rib upside down, and because the HS-404 is not symmetric the holes are shifted (down in the picture below).  My potential thought is to either press, replace, or place a third rivet.

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Horizontal Stab 9 (2.0 hrs)

I emailed Mike after my last workshop session.  I was dismayed and frustrated with my mistakes and unsure of whether or not I needed to replace the parts.  Mike agreed to come over this evening to take a look at the mistakes and give me some guidance on anything I might need.  Turns out that I was over-reacting!  While the countersinks are overdone, they will not present a significant weakness.  Additionally, while the one hole is slightly outside of edge distance tolerances, there is more than enough support elsewhere for it to not be an issue.

Mike’s visit was an excellent opportunity for me to get set up for priming.  Here you can see the rear spar for the horizontal stab after priming.  The process is much easier than I had imagined, and I’m really pleased with the results from my super cheap harbor freight gun.  The cap on the paint container does leak if you don’t keep the gun upright, so I’m going to have to figure out a solution to that problem.  My confidence is restored!

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Horizontal Stab 8 (1 hr)

Wanted to put three or four hours in tonight, but I over-countersunk the splice AND reinforcement angles. Pretty sure I will need to replace both parts.

I also found a center rib that was drilled too close to the edge by the previous owner. I also think that parts he messed up were marked in blue. I wasn’t told this, and there are no replacements.

So, I stopped for the night. I’m very frustrated and angry with myself, so I’ll cool down and approach the problem fresh tomorrow. I will also try to get a second set of eyes on it.

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