Vertical Stabilizer

Tonight after work I spent a couple hours working on the vertical stab. Before mounting it to the fuselage, the forward spar had to have 5/8th of an inch trimmed off.

Here is the spar after trimming and filing the edges smooth.

I then mounted the stab to the fuselage and clamped it in place.

The height relative to the fuselage is important. I taped an Allan wrench to the rudder hinge to use as my reference line and to ensure everything was aligned.

After measuring the verticality of the stab by measuring from the tip to each end of the horizontal stab, I confirmed it was aligned, And then used my angle drill to drill the rear spar to the elevator stop, then inserted the bolt temporarily.

Here is the aft of the rear spar. I then did the same thing for the second bolt through the elevator stop. I then bolted both sides to hold the stab in place.

Before finalizing the forward spar bracket, the hinges have to be kept perfectly straight. I decided to use the rudder as my straight edge, because it will tell me if there is any change in the play on the rudder.

It worked great, and after ensuring it swung freely, I determined I need to fabricate a shim to go between the front spar and the bracket.

Next step is to fabricate the shim, and drill the front spar for the bracket.

Vertical Stabilizer

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