indigoonlatigo(at)msn.com
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 Posted: Sat Dec 22, 2007 9:06 pm Post subject: oil canning reveised/revisted. |
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Sorry I am not able to hit the reply bottom as something is seriously wrong with my computer.
As for the loose skin/oil canning areas, I'll bet it is the square just aft of the main spar, one outboard of the outer most access panel and then the square, aft of the main spar, 2nd inboard of the last outboard access panel.
As for when I started this post, my skins on my first wing(Left one) were not tight in several locations just aft of the main spar. I had not completely rivetted the entire bottom skin in place and had only completed step 11. I opted to remove the rivets from the main spar all the way aft to the, but not including the J channel. Again all my skins were tight aft of the J channel. I then re revitted the forward section doing the hopscotch method, never moving forward until all rivets in the horizontal row were completed. I had also trimmed the edge the joins with the LE skin. The results this second time were better, but I still have some oil canning in the above two bays, with the bottom skin completely closed up....these correspond to the two bays where the ribs naturally lean into each other, or should I say pull toward one another.
This weekend I completed the right wing up to step 11, I am waiting on my AOA sub kit and can't finish right now. Again see other passed post for what I am doing as per rib order, working down and outward and inward at the same time. I will post my result after the wing is closed. So far the right wing skin is very tight aft of the J channel, but so was the left one.
The difference so far on this second wing, I haven't made one ding yet XXXXX crossed fingers. The 8 inch rivet set extension from Avery is a must around those flap brackets and buy another flush set with the rubber and put it on the disk sander and make a flat spot on one side so the set can get up to the rivet which is so close to the flap bracket.
Will let you know how second one comes out once completed.
JOhn G.
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