Originally Posted by
Johno59
They question I'd like answered is there any difference with the insert and what happens when the cable starts cutting through the piece of outer.
Not sure I understand your question. The difference to me is that the liner has a lot more lubricity properties than a steel cable on a steel surface. As the cable starts a groove, the contact surface area increases with a corresponding resistance or drag, coefficient of friction kinda thing. The liner is probably better than when the cable was cutting through the paint!
It is worth checking every once in a great while for the cable cutting through the liner. I don't know what the service life is of either cable liner shown.