bobmarkert
Well Known Member
This is a picture of the F-839 elevator push-pull tube on an RV8 that connects the front and rear stick together. It comes from the factory with the threaded ends pre-installed in the tube and powder coated. I can see a depression in the powder coating where the thread insert is attached to the tube. I cannot tell if it is attached with a weld or some sort of rivet holding it together. The directions are clear that at least half the threads of the rod-end-bearings must be engaged to protect against the scenario where the nuts come lose and the tube turns. The problem is there is a DEFINITE resistance (block) where the weld (?) is. I cannot (or am unwilling) to apply the amount of force it would take to insert the rod-ends in 1/2 way. The picture show the jam nut set at the depth where the bearing stops screwing in and it corresponds to where the weld is. I am considering running a tap through the threads. I would like the collective wisdom of the group to weigh in because this is a piece of the primary flight control system!!!!
Thank You
Bob
Thank You
Bob