LH Root Ribs and Root Doubler (2)

2 hours

I got the root ribs pilot drilled to their attach angles, and the root doubler/wing walk is fitted and updrilled!  The root doubler was much easier this time since I didn't accidentally updrill all the holes in the skins first.

LH Wing Skins, part 4 (2)

2 hours

More drilling.  I got the bottom side of the leading edge pilot drilled, the lower aft skin updrilled, and the top and bottom of the main spar updrilled.

LH Wing Skins, part 3 (1.5)

1.5 hours

I put the wing back on the stands this time so I could do both sides of the leading edge without having to flip the whole wing.  So far I got the top side fully pilot, then ratchet strapped it closed and cleco'd the bottom side to the main spar.

LH Wing Skins, part 2 (1)

1 hour

I flipped the wing and got the lower aft skin pilot drilled.  Then I put the wing back on my stands, leading edge up.  This time I'm going to try fitting the leading edge this way so I can get at both sides at once...  We'll see if it's any easier than doing it flat on the table was.

LH Wing Skins, part 1 (2)

2 hours

Upper wing skin drilled to the wing!  This time I planned ahead and refrained from updrilling holes where other parts still need to be fit.

LH Wing Squaring & Leveling (1)

1 hour

Just like the other wing, before starting on the skins I had to make sure the wing was both square and free of any twist.  I started by leveling the main spar the long way, and then I used a plumb bob to locate the pilot hole at the end of the rear spar at wing station 19.0.

I assumed the brace I made for the other wing would set this wing right where it needed to be, but it was actually about 1/2" off.  I spent a little time trying to figure out why, and then I gave up and just adjusted the length of my brace to set this wing properly.

Then I put the wing flat on my table and shimmed the main and rear spars until they were level with each other throughout the length of the wing.  Finally, I pulled the upper aft skin out and cleco'd it to the rear spar so I can start drilling it tomorrow.

LH Wing Structure, part 2 (5)

5 hours

Not much interesting to show from this long session, but I got the whole wing structure drilled together, updrilled, deburred, and riveted!