Had a tech counselor visit today prior to closing up the wings. He looked over the wings and asked several questions about why I had done certain things the way I did, and we had good conversation about the progress. He had no issues with my work.
We did discuss the location of the pitot tube related to the tie down ring and the possibility of the rope fouling on the pitot tube. It was a consideration when I determined the location and I felt like I was clear, but it is something I'll have to be conscious of when tying down.
He raised some good questions about bolt lengths that caused me to go back and check a few bolts with significant thread exposed. The concern is that if the bolt was too long, I may have been tightening against the shoulder of the bolt and not compressing the plys. I put a wrench on a few of them to see if I could move them easily. While I was able to move them it a bit, it took some effort and no less force than the bolts which I'm confident were fully torqued. I think I'm ok, but I'm glad he brought it up and something I'll keep an eye out in the future.
He also pointed out the lack of minimum threads on the ends of the torque tubes. I explained the challenge of the additional washers I added on the inside of the bearings to take up the slack and I had already used narrow washers. I thought they were good enough with a sliver of thread showing, but he pointed it out as an area that DARs have commented on before on RV-10s. He suggested that these nuts were nut in tension and that a slimmer "shear" nut could be used. I verified those would be appropriate and ordered some from ACS. Good catch and good suggestion.
Good visit. Thanks for coming by Michael.