ORIGINAL: Clay Walters
From experience how much would yall say the cable might stretch before settling down? Might leave my adjustment more for taking up slack instead of letting line out.
I usually do exactly that...set things up so there's more room to take up slack than to let some out.
How much depends on quite a few factors, including length of cable, type of cable, rudder deflection and size (those planes with large rudders and high deflection angles seem to stretch more ime), etc.
My general "rule of thumb" is I want the clevis "3 turns in" when initial setup is done. IME, that's more than enough room to back off if needed due to temp changes/etc, and leaves a large amount of room to take up slack. YMMV, of course.