Saturday, May 9, 2009
Fabbing more wing parts
I have been working on the rib that attaches to the gas tank. It's undersized and then you rivet and piece of 1.5"x36"x.032 strip to it that gives a flange for the gas tank to attach to. I have also been working on making the aileron bellcrank rib with all the angles that have to attach to it. I have cut the rib out and an fitting all of the parts to it. I have a bandsaw and disc sander that sure make it easier to fit all of these parts. I had to it all by hand with a file and hacksaw on the first RV-6. Once I get these parts knocked out, I will prep/paint them and assemble. Then I can get to fitting the ribs to the wing spars on the bench. That will be a big task making all of the ribs fit to the wing and getting all of the attach angles fitted/drilled to each rib. I am getting smarter on this plane and I WILL NOT BE GOING OFF THE PLANS for dimensions. The pre-punched skin rib locations are not in the same place as the plan dimensions. So what you do it lay the rib locations out off the skin. Then you rib lands in the center of each rib location. You only have to make the angles that attach to the spar fit and sometimes that means going to a 1" wide angle to edge distance when you back drill through the spar rib location. EVERYTHING on these airplanes is bash to fit, paint to match.
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