| Assemble and cleco all of the parts for both ailerons, then match drill the holes. Also dimple one of the skins where it contacts |
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| the ribs, install a couple of keeper rivets that get drilled out later. All in all the ailerons are going together rather quickly, There |
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| was a minor issue in dimpling the last rivet hole on the in and outboard ribs, I have the close quarters dimpling die from |
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| Cleveland, but they are designed to be used by a pop rivet tool which pulls both dies together and forms the dimple on the |
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| material in between. There was no way to get the stem that the puller uses inserted without seriously bending the flanges. I |
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| chose to drill an additinal hole opposite the hole that is being dimpled that allowed me to insert the stem and use the close |
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| quarter dies. This obviously weakens the rib somewhat, but in my infinite wisdom, I don't believe its at all close to any structural |
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| failure. Avery sells a vise grip dimple tool, that is small enough that it works OK (for future reference!!!!). I used a #40 reamer |
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| instead of the drill, the drill seems to tear up the hole too much, and with the Cogsdill, ends up enlarging them too much. |
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