Originally Posted by gauchoverde
I have the pinch bolt for my Thule bike rack. I believe the insert shafts needs to be threaded for it to work. I have the bikes far enough back so they do not contact the back of the rig when bouncing. Yes, they do bounce.
Mine has a nut inside that is held in place by a rubber thing that's part of the closure for the end of the 2" tube. I had trouble with the nut not staying near the edge of the tube, so the pinch bolt threads couldn't catch it. I bought a large "easy" spring about 1-1/2 in diameter and cut a couple of coils of it and put it behind the nut, so it holds the nut against the side of the 2" tube. Problem solved.
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