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Larry Winger's 601XL Project
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Date: 4-13-2007
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Number of Hours: 2.50
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Manual Reference: 6W3
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Brief Description: Started riveting left OB spar
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One of the construction techniques stressed by Desmond was to immobilize the entire structure to be riveted with hole fasteners for alignment, compression and rigidity. Clecoes are easiest, but the thickness of the stack was too great, so I had to go to AN3-10 bolts in the cap/doubler portion. Just putting them all in place took quite a while. On the bottom doiubler, I experienced problems with the 2nd hole from the center (in the doubler/cap area). Apparently, this was not match drilled properly. In trying to ream it out, using first the hand reamer and later the drill, I enlarged the hole beyond useful range for a rivet, so the only option here is a bolt. I will need to consult with ZAC on Monday. I believe a single bolt in this location might work, but I'm not taking any chances. If not, I guess I'll be remaking both OB spars. This has not been my best week. I did drive about a dozen rivets around the area of the bad hole to immobilize it, and those rivets went in just fine.
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Clecoes in all 5-9 and 5-10 holes
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AN-3-10 bolts in all 6-14 holes
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