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G&L Hobbies Chipmunk Build
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04-09-2015 | 03:37 PM
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jsanchez581
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Since I am not going to joint the two wings, I will use an aluminum tube that I ordered from Nick Ziroli. I had to make a jig to get a straight line when cutting the holes.
I drilled the holes with the tube itself. I took into account the dihedral, so I put a piece of wood at the wing tip to elevate it 1 ½" (plans says 2 ⅛ but is too much for me) before cutting it. Then I aligned very carefully the tube and by hand I opened the wing holes.
After that, I mounted the landing gear supports (red oak) and installed blind nuts. I also drilled ¼" hole in those wood blocks al the way through the plywood and into the foam and inserted ¼" wood dwell with gorilla glue. I was looking to have some extra support to this blocks. I don't want my landing gears to fail.
Since I will cover all the holes, with 1/16" balsa to avoid the gorilla glue going into them, I am concern with the top part of the landing gear holes, since we use that area of the wing when handling it. I am running a test with carbon fiber cloth in a piece of foam that I am planning to glue in the top part (for the bottom part I will make it with fiber glass or carbon fiber) to see how it looks once it dries and I apply a 1/16" piece of balsa. Not sure if the CF will raise the balsa in the wing that you will notice when I glue the sheeting.
In the mean time, I glued the stab with 30 min epoxy. I had to install "shims" in one of the half since they were not level.
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