loftsofwind said..
Why wouldn’t you chuck some plastic tubing around the rope.
Bye bye rope wear
You could do that, but I'd advise against it.
There have been countless accidents in kiting (including large single line novelty/display kites) and yachting, using sheathed ropes, because the user cannot see any wear that occurs due to the action of the sliding load or pulley wheel and contamination with sand or even salt crystals. Its happend to me in buggying, and I've seen it happen with large and potentially very dangerous when let loose, single line kites, etc. The open braided rope is the best option for this type of application, because the wear is visible.
@DimiSUPAlthough its highly unlikely, because as you said the outer rope on the Dynabar ropes, tend to break in the middle. For the eye to lease from the pin, all of that mangled/frazzled outer rope would need to get pulled through the small hole in the bar AND around the pin. I think just the fact that there are 2 changes in direction and the small hole in the spreader where the rope goes through would prevent the outer rope from ever slipping, but technically its possible. I'd recommend changing the Dynabar rope just a bit sooner than when its completely broken the outer sheath! Or make your own with the 4/5mm dyneema most good kite shops sell as replacement rope for broken uncovered centre line.
I like your fixed centre ring option, easy to do and use as the leash connection point until you want to ride TT or race, then just swap c-loop and leash positions, nice!