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Sonex 815 Build Logs
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Date: 2-26-2008
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Number of Hours: 2.50
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Manual Reference:
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Brief Description: Cowling installation
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Trimmed glass at forward fill. Drilled upper hinge into place. Installed cowling. Marked bottom center for RH bottom hinge with tape on the bottom skin. Removed LH half, installed the RH bottom hinge half, held the RH bottom corner at the tape, marked the end of the hinge with tape on the cowling, eyeballed the in-out of the hinge. Removed the RH cowl half, drilled the RH bottom hinge in place. Reinstalled the cowling to check fit of the RH bottom hinge. It was tight, but the pin went in. Marked center for the LH half with tape on the bottom skin, removed the RH half. Did the same to locate the LH bottom skin (can't just drill through the hinge - nowhere to get the drill). Removed the LH half, drilled only 3 holes in the hinge, cut the pin notch, reinstalled and checked fit. Noticed I had displaced the LH hinge to the wrong side of my 1" wide tape mark, so it was off by one lug, but it fit nicer than the RH side (and the notch is 1" too wide). Removed the LH half, moved the hinge to the right spot, and drilled all the holes. Made spacers for the LH side hinge - two thicknesses of .025 to get the cowl to fit flush with the fuse side instead of being pulled in to it. Drilled this and clecoed it in place. Test fit the LH cowl. It's a pain to get the pin in now because I can't just press the cowl tight against the hinge lugs - I have to float them .050 out from them. So I smoothed off the hinge pin tip some more (made it more like a pencil tip) so it would locate better, and it did. I'll do this for the RH side as well.
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