Sunday, February 7, 2016

Finished the right wing W-423 joint plate - 3 hours



Again, not as big a day that I wanted to get done. but it was still good to reach the finish line with the leading edges. I fit up the W408 rib on the right wing leading edge and installed the W-423 joint plate. For some reason it felt as if this side was being more difficult than the left side. Although, I didn't have the stall warning hatch hole to work with. Again, the process for fitting was identical as the left side. I was sure to get a nice tight fit against the leading edge skin and I am also quite pleased with the alignment of the joint plate and rib. Once i was happy with the fit, I started match drilling and clecoing each hole as I went. Checking, adjusting, and checking again.


Once that was done the next move was to open up the hole for the right wing tie down. Just like the left I started with a round file and reworked center.

Then I used a unibit to open the hole. I had to stop and remove the leading edge so I could remove the plastic as it was difficult to tell how centered I was.
 

 I quickly refitted the assembly on the spar to check alignment  and it looked good. So I took it off and completed drilling with a unibit to 3/8". However when I put the assembly back on and started to cleco, I could tell that my alignment was a tad off. so I readjusted, used the circle template to find the proper correction. I decided that I was going to go up one step on the unibit to 7/16" to allow clearance for the bolt and the skins when painted. Fortunatly the 7/16" hole placed correctly will allow for my slightly off 3/8" hole. So i broke out the files and went to work re-centring the hole. Once it was good, I finished off both holes (left and right wing) with the 7/16" unitbit.