spaceflightmeow
Active Member
Hello,
I've clecoed my leading edge together, clecoed that to the spar, and match drilled all skin to main rib holes, except the skin to main spar holes.
Wondering when (or if) I should match drill the skin to spar rivet holes - before or after riveting the leading edge together? The goal is to keep things aligned and straight, of course.
Here's the two ways it could go down:
1. Rivet leading edge skin to ribs while off the spar, like the manual says (some twist may result at this point)
2. Place riveted leading edge on spar, match drill skin to spar flange rivet holes.
3. rivet leading edge skin and ribs to the spar. Spar skin holes should align perfectly, but leading edge may be a bit twisted.
--or--
1. Cleco leading edge skin to ribs, cleco to spar flange, and drill skin to spar rivet holes.
2. Remove leading edge and rivet (some twist may develop)
3. Cleco riveted leading edge to spar. If there is twist in the leading edge, it may be possible to pull the assembly back in line at this point.
4. Rivet leading edge to spar. It's not twisted, but the ribs may be preloaded.
There's perhaps a third option, too:
Don't match drill the skin to spar rivet holes, just open up them up to #40 independently, and hope that the as-punched alignment keeps everything together.
Any advice would be appreciated on which way to go.
I've clecoed my leading edge together, clecoed that to the spar, and match drilled all skin to main rib holes, except the skin to main spar holes.
Wondering when (or if) I should match drill the skin to spar rivet holes - before or after riveting the leading edge together? The goal is to keep things aligned and straight, of course.
Here's the two ways it could go down:
1. Rivet leading edge skin to ribs while off the spar, like the manual says (some twist may result at this point)
2. Place riveted leading edge on spar, match drill skin to spar flange rivet holes.
3. rivet leading edge skin and ribs to the spar. Spar skin holes should align perfectly, but leading edge may be a bit twisted.
--or--
1. Cleco leading edge skin to ribs, cleco to spar flange, and drill skin to spar rivet holes.
2. Remove leading edge and rivet (some twist may develop)
3. Cleco riveted leading edge to spar. If there is twist in the leading edge, it may be possible to pull the assembly back in line at this point.
4. Rivet leading edge to spar. It's not twisted, but the ribs may be preloaded.
There's perhaps a third option, too:
Don't match drill the skin to spar rivet holes, just open up them up to #40 independently, and hope that the as-punched alignment keeps everything together.
Any advice would be appreciated on which way to go.
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