Quote Originally Posted by conodeuce View Post
A side question about wing rigidity: How often do drag-anti-drag rods require tightening? Over time, do things loosen up? Do big temperature changes have an impact? I had a rag-wing Cessna 140 for several years. I don't recall maintenance log entries indicating that sort of work.
I don't think it happens that often.

With THAT said, I found a loose internal brace on my Fly Baby a couple of months back. The wing had inspection panels that "kinda" gave me access to the turnbuckles, and I managed to snug it back up again.

It loosened, and I was concerned that I had a nicopress slipping or other dire event. But I re-tightened it and did a better job of safety-wiring (used brass wire instead of stainless for better ability to wrap tight in a limited area). Checked it several times since then, and it's been holding.

I discussed the issue on a previous thread:

http://eaaforums.org/showthread.php?...ing-Techniques

Temperature-wise, I have noted one instance where hot temperatures resulted in control interference. Don't think it was due to the internal bracing, though, probably the wood.

http://www.bowersflybaby.com/tech/heat_controls.html

Ron Wanttaja