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Extra Extra V2 - Build thread and showcase
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03-03-2009 | 05:02 PM
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guinnb
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RE: Extra Extra V2 - Build thread
Finally, make two small pieces out of 1/4" ply, cover, and install/glue on the left side wing mounting tabs for a blind nut to bite into. Then pre-drill the holes in the fuse for the wing mounting bolts. Slide the wings on one at a time and drill wing mounting tab holes into each wing by drilling through the fuse using it as a guide.
Now is the time to measure the wing tube length and cut it off. Put the tube in one wing and slide it onto the fuse. Once seated make sure the tube is all the way in the wing. The take a pencil and draw a circle around the tube on the opposite side of the fuse. Also mark the tube sides left and right so you don't make a mistake in the next step. Now slide the wing off leaving the wing tube in the fuse. Slide the opposite wing into place and mark the wing tube on the opposite side of the fuse. Remove the wing and tube and measure the distance between the two marks. Add 1/32 to 1/64 to this measurement and then cut the tube by this amount. Next install your wings by sliding them onto the wing tube and anti-rotation pins, tighten the wing bolts, and then double check your CG with all equipment in place. Right now the suggested CG is designed at 8-9 1/4" back from the L.E. at the root. I need to check the plane again as the current CG is perfect. I'll check that and post it as soon as I can. I also used foam tape on the inside of the wing doubler to help dampen vibration. I don't think it's necessary but seems to have worked well.
The last thing you need to do is read the following articles and realize you may have the same thing happen to you when you fly this plane. After all , this plane was designed to make the news...
I know, I know, sometimes I spend too much time online
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