4 hours
Back at it again after a vacation and some other stuff. I updrilled the leading edge skin to #32, and updrilled everything I could reach on the root rib attach angles to #30. Then I removed the leading edge skin.
The root ribs on the left side are a bit trickier than the right because the attach angle faces the opposite way so, the hardware attaching the angle to the spar is very difficult to get at. I realized while disassembling that with the ribs riveted to the angles, there'd be no way I could torque them back on properly. I decided it would be easier to bolt the attach angles on first and torque everything for the final time, and then rivet the ribs to the angles last. This also required me to remove the wing attach block since that would've blocked access to where I needed to rivet.
Anyway, I took all the root rib components apart, cleaned up all the holes, and then riveted the reinforcements only where the attach angle doesn't overlap. Now they're ready to go back on the spar.
Another thing that caused me some extra work that I didn't run into on the right wing was, with the attach angles facing outboard, they block the last hole on the main spar where the skins overlap. So I had to file some relief area on both ends of the forward angle to fix that problem. I think it's good now!
With all that done, I finally bolted the attach angles back on the spar and then riveted the ribs to them.
The two rivets in each corner were tricky to get at, but with my skinny rivet puller and little wedge tool I got them done without too much trouble.
