Hello all,
In a previous post, I mentioned about a skin buckling issue on my left wing top skin. After not getting any majic "fixes" from anyone, I was forced to really look at my problem and rethink a few things. I reviewed the exact sequence of riveting that got me into this jam and made some conclusions.
I had a couple of friends lend their time to help me rivet the two top skins onto my left wing. In order to not keep them any longer than necessary, we only riveted the skins down to the bottom row (or most aft row as it were). I figured I could lie on my back on the shop floor and easily reach both sides of the skin, and finish the job myself. At this point, before going on my own, we had followed proper riveting sequence and "fanned out" from the center of the skins...so far so good...
I don't know what I was thinking when I did this, but when I started the bottom row, I started at one end and riveted to the other end. First the inboard skin (outboard trailing edge inward toward the wing root). Got lucky here as there was buckling here.
Next the outboard skin, and this is where I got into trouble. I started at the outboard trailing edge and progressively worked my way right down the line and finished up at the lapjoint area. I didn't notice it at the time, but there wound up being a slight rise (buckle?) in the trailing edge of the skin near the lap joint area. I didn't really notice it until I clecoed on the aileron brace, and then it was real apparent!![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The only solution that I have come up with is to drill out all the rivets from that bottom (or aft) row (around 70), and re-cleco everything and recheck to see that the warp has been removed. Then begin riveting again in a more even pattern to make sure there is no creep.
Before I begin this rather drastic step, I am hoping you guys will pipe in here with either other ideas, or encouragement to press on with my plan
.
In a previous post, I mentioned about a skin buckling issue on my left wing top skin. After not getting any majic "fixes" from anyone, I was forced to really look at my problem and rethink a few things. I reviewed the exact sequence of riveting that got me into this jam and made some conclusions.
I had a couple of friends lend their time to help me rivet the two top skins onto my left wing. In order to not keep them any longer than necessary, we only riveted the skins down to the bottom row (or most aft row as it were). I figured I could lie on my back on the shop floor and easily reach both sides of the skin, and finish the job myself. At this point, before going on my own, we had followed proper riveting sequence and "fanned out" from the center of the skins...so far so good...
I don't know what I was thinking when I did this, but when I started the bottom row, I started at one end and riveted to the other end. First the inboard skin (outboard trailing edge inward toward the wing root). Got lucky here as there was buckling here.
Next the outboard skin, and this is where I got into trouble. I started at the outboard trailing edge and progressively worked my way right down the line and finished up at the lapjoint area. I didn't notice it at the time, but there wound up being a slight rise (buckle?) in the trailing edge of the skin near the lap joint area. I didn't really notice it until I clecoed on the aileron brace, and then it was real apparent!
![Left%20Wing%20Skin%20Issues](/community/proxy.php?image=http%3A%2F%2Fs714.photobucket.com%2Falbums%2Fww141%2Fjdmunzell%2FLeft%2520Wing%2520Skin%2520Issues%2F%3Faction%3Dview%26current%3D100_0855.jpg&hash=e20f0bb58e2b2f1168645f60c906a9c1)
![Left%20Wing%20Skin%20Issues](/community/proxy.php?image=http%3A%2F%2Fs714.photobucket.com%2Falbums%2Fww141%2Fjdmunzell%2FLeft%2520Wing%2520Skin%2520Issues%2F%3Faction%3Dview%26current%3D100_0858.jpg&hash=1217454485ec2ecd614465c8b77d133f)
The only solution that I have come up with is to drill out all the rivets from that bottom (or aft) row (around 70), and re-cleco everything and recheck to see that the warp has been removed. Then begin riveting again in a more even pattern to make sure there is no creep.
Before I begin this rather drastic step, I am hoping you guys will pipe in here with either other ideas, or encouragement to press on with my plan