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Zenith CruZer & Sonex Logs
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Date:  6-7-2018
Number of Hours:  1.80
Manual Reference:  C75-WA-1
Brief Description:  Prep work for skeleton (left)

Several little areas, all contributing to the overall success.

First up was to install some nutplates on the inspection hole covers I drilled and counter-sunk yesterday. I had some left over from last build, so didn't dig out the Zenith-supplied parts (same thing though). Installed 5 nutplates on each cover, as I only had 10. Since these use 3/32" rivets, I had to dig out my old Arrow riveter as that was the only one I had that would handle the narrow stems. Had to open-up the screw holes as they were exactly 3/16, which lead to the screws threading themselves into the holes - just a hassle.

Next, I cleco'd the outer wingtip extension in place and up-drilled 8 of the mounting holes to 3/16" (#12 drill) and riveted with A6 rivets - these are honkers! Also installed the remaining 5 A5 rivets.

I then figured I had some time left, so I cleco'd the inner root rib and root nose rib into position; these also require the remaining 2 A6 rivets and it was a pain doing this after the other ribs were installed (just angle/access issue). As with the right wing, where the nose rib meets the L-angle already in place to support the upper root skin, I had to file some relief notches in both the L-angle and the base of the nsoe rib. Rivet will come tomorrow or the next day.
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left outer tip extension installed

left outer tip extension installed

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added nutplates to covers to keep the bugs out

added nutplates to covers to keep the bugs out

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Inner root rib cleco'd in place

Inner root rib cleco'd in place

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