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I started out today by fiddling around with the fuel tanks and wing tie-downs for about an hour. I recently picked up these plastic bushings at Home Depot to use as a spacer for the tie-downs. They are 3/8" inner diameter and 1/2" outer diameter.  It was too long for what I needed so I cut it in half with my Dremel and a cutoff wheel. Then I used the drum sander to get it down to size. It is perfectly sized to slip on the tie down ring. I then enlarged the hole in the skin so that the bushing would fit inside. I wanted to make these bushings so that the tie-downs would have something to sit against when I tightened them down instead of grinding into and pushing in the skin.  Here is what it looks like with the tie-down screwed in. I can sand off more of the bushing if I want it to sit closer to the skin.  Later, I convinced my roommate Steve to come out and shoot rivets again. We managed to get through all the non-squeezable rivets (basically all the wing skin rivets except the ones on the rear spar) in about 2.5 hours, we were motoring! Then I spent the rest of the night squeezing all the rivets along the rear spar. The wings look really great and I am pumped to be over this hurdle! Thanks again Steve for the help!  I also measured the wings for twist with a plumb bob hung from the main spar. I did this at the root and tip and see how far the line is from the rear spar. If the line is the same distance from the rear spar at the root and the tip, then the wing is free of twist. My left wing measured exactly 0 mm difference between root and tip and the right wing had about 1 mm difference. I think it's safe to say that they are twist free!
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| Thanks for visiting! | Last Update: 25 May 2012 |