Elevator rib1 rework and spar
Task completed
- Replaced right rib 1 on elevator (
EL-ASS-001-C-F-0sheet 10) - Riveted all ribs on elevator (
EL-ASS-001-C-F-0sheet 11)
Detail
Replacing rib1
Following the theme of rework, I finally replaced the right rib1 on the elevator.
It needed to be replaced because I drilled a very elongated hole when trying to drill out a rivet a couple of weeks ago. Here is a picture for illustration.
With the new part in hand, I went ahead and drilled out the old piece. In order to remove this piece, I needed drill out 8x4.8mm rivetes, and 4x4.0mm rivets.
I’ve removed many 4.0mm before so nbd, THE 4.8mm ones made me a little nervous because of their position. They were right at the center of the main spar holding the 2 halves together, I really didn’t want to mess this up. Fortunately, I did not make any of the holes worse. The primer got severely scratched, but that’s easy fix.
The old rib1 is out!
Completing spar assembly
With the old rib1 out of the way, I was able to proceed and complete the spar assembly.
I laid out all pieces at roughly where they would go just to get an idea.
The next step is to cleco things together.
Interestingly, on the spar extension - the KAI says to use 3.2mm rivet but the pre-drilled holes are 4.0mm size. So I went ahead with 4.0mm rivet following my common sense. I sent a question to the Sling builder group to see if others have seen this issue in their builds.
After clecoing and reaming a few holes, I riveted everything together.
