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Home My shop SunNFun2003
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Finally, time to build the wings. I remember a long time ago, when I was building the fuselage sides, how far away the wings seemed. Well, now they are here. And I'm glad. I think it's because during the last few chapters, I have spent hundreds of hours working on the airplane and it has resulted in very little MASS. I work, and work, and slave, and slave, late nights and when I walk in my shop and look I say, "where is 1,400 hours of work and 14,000 dollars?" So, I'm happy that I finally get to add some square footage to the plane.
The first thing I did in preparing to cut the blocks to the proper outside dimensions, was to take two foam blocks and butt the long sides together. If they mated perfect, and were parallel, I went on. If not, I would put my level vertical on one end, attach a straight trim template, and do the same on the other side. Then, make the long cut. Then I repeated that on the block it would mate to. Then, when I mated them together on the table, there would be not gaps at the top or bottom of the blocks. = If you DO end up with some gap, micro fill will probably take care of that. Then, REGARDLESS of how clean the leading or trailing edge foam looked, (from the factory) I trimmed them. First, I cut the leading edge, and then measured back the proper dimension to the trailing edge. Then cut the trailing edge. HELPFUL HINT: There are two dimensions that
will help when cutting the planforms. On page 19-11, the drawings have you
measure 37.23 or 51.76 to obtain a parallel line to the first parallel line you
draw on the foam with your sharpie pen. Well, after you measure over either of
those two amounts, you can double check yourself. Lay out your lines, and then use these two numbers to double check your layout lines before cutting. I obtained these by drawing lines using the plans dimensions in a cad program, and then simply asking it that dim. which was not in the plans. For my straight trim templates, I bought a 3' aluminum ruler from home depot, cut it on the band saw, and drilled the necessary holes in it. Nice and smooth, nice and straight. I attached the blocks with flat wood mixing sticks with plenty of 5 minute epoxy during the layout/cutting since my work table is up against a wall and I had to keep turning the blocks end for end. After the cuts, I pulled the blocks so the edge was parallel with my workbench and lifted on the block that was overhanging the edge of the bench until the sticks broke loose. I left the sticks attached to the block that they stayed on as they will need to be re-attached later.
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Email -- Jay Hegemann |