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Zenith CruZer & Sonex Logs
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Date: 10-18-2022
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Number of Hours: 2.50
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Manual Reference: C75-FA-2
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Brief Description: finishing up (closer) to the lower vertical fin
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Good day; time flew, but made good progress and planning.
I decided that the lower vertical fin skin was close enough, so decided to mount it. Drilled 3/32 holes for rivets in the upper edge of it. Then, followed up with 1/8" drilling and cleco to hold everhthing nicely.
Next, I decided to mount the lower L angles that secure the lower fin to the upper fuselage. These have to be up drilled to 5/32". Beefier rivets!
First I marked out the rivet spacing, then matched up the angles to the fuselage to ensure nothing was on top of a rivet line, etc. Due to the width of the lower fin, I had to resort to some rigid holding of the lower fin to ensure everything tracked on the centerline. Got both sides drilled and cleco'd. Did not rivet at this point.
Next, I drilled the aft find spar to where it mates with the fuselage. These are also A5/5/32" rivets, so first drilled them to 3/32, then 1/8, and finally to 5/32. I ordered new rivets since I was running low, and there are abour 40 on that spar alone!
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