January 11, 2008 - HS and Elevator Tips

 Tongiht I worked on the horizontal stab and elevator fiberglass tips.  First, I dimpled a couple of holes on the trailing edge that I hadn't done almost four years ago because I had no way to do it at the time.  But now, I had the 1/8" pop-rivet dimpling tool I could use. 
 
Next, I went to cut out a piece of foam to fill the horizontal stab tip opening.  I had bought this big piece of foam from Aircraft Spruce a long time ago.  This is the first time I've worked with foam.  I've no idea if this is the right kind of foam but it seems like it should work.  I used an X-acto knife to cut the foam.
 
 Per the drawings, I filed the edges of the lead counterweights so that they conformed to the aluminum piece. 
 
After a little trimming with the Dremel sanding drum, the foam fit in the HS tip nice and tight.  I epoxied the foam into the tip.  Later, I'll cover it with fiberglass.
 
 I made one final check to make sure the elevator swung without interferance.  Then I epoxied the elevator tip to the lead counterweight, and pop-riveted the tip to the elevator.
 
 The tip riveted to the elevator.
 
 I have to glass the HS tip before I pop-rivet it tot he HS.
 
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