What you have is fine. The following text is not science, or law. Its just commentary. It's stuff I've picked up about hardware that you can take or leave. BTW, every builder can have an opinion....be critical about an install. I want to come across helpful and maybe some can take something away to help there build. When I see part of what I built years ago, I see growth in my building. Craftsmanship is all about improvement and its fun to collaborate, see things, improve and hang out with others to pick up little improvements.
Some of what follows comes from the weight of my hardware stash. When I pick up a tackle box of my bolts, or nuts, or washers and move it I think about how much it weighs and look at my airframe and wonder if I can shave any weight off. Some extra attention to detail might shave off a few pounds from my airframe in the end.
Turn Buckle Bolt:
-Washers under the head of a BOLT are handy for protecting the paint surrounding the bolt. If they are not installed under the head then a socket will mess up the paint. So, I like having washers under bolt heads where appearance is important to me. Otherwise, I see those washers as extra weight and extra expense and unnecessary.
-The thread exposure on the The turn buckle bolt looks perfect to me At least One Thread should be showing on a bolt. I had a very talented nit-picky mechanic say its 1.5 threads. Its not...one thread is IAW AC43.13. But, I try to hit 1.5 threads and will use different thickness washers to hit 1.5 threads to give my install a barrier against those nit-pickers who might say "Looks like He only has .8 threads showing."
-A clevis pin is also an option in this location.
Aileron Push Rod Bolt
-You used two standard washers and one thin washer to accommodate the longer bolt. Thin washers are 1/2 as thick as standard washers. (.031, not .062).
-The AN970 fender washer....I want to echo what Kevin said about Spherical Rod End Bearings. A failure mode of them is they fall apart. When they do, the bolt head is not large enough to keep them in place and they will fall off. So the oversize washer will keep the rod end in place. The industry standard plans this and you'll apply this where ever They are used.
-That bolt is a long bolt. Make sure you have good clearance as the threaded bolt end moves under the steel aileron drive linkage frame. Consider a slightly shorter bolt to improve clearance and remove the extra washers.
-I document desired changes like this kind of stuff on a shopping list and my "issues" list, so when I buy the shorter bolt on my next order, and it shows up in four weeks, I can recall where and why I did it.
-Shear nuts (thinner nuts than standard tension nuts) will save a bit more weight, and improve that clearance. I used a lot of them in my build wherever they could be applied.
