darippah wrote: ↑Fri Mar 04, 2022 7:45 pm
Lines look great to me honestly. That fraying seems to be affecting 1/100th of the line strength..
However, The Heavily worn area by the Splices should be removed/ respliced. And most importantly , YOU MUST TAPER! I snapped all 4 lines at the NON tapered spot during a loop once. Never again
Spot on for the taper, but you couldn't be more wrong about the '
1/100th of the line strength'.
The thinner grey lines have surely lost half of their initial breaking strength.
As a rule of thumb, the thinner the line, the higher the impact of surface wear (circumference) on breaking strength (cross section).
Example: 1mm line has a circumference of 3,14mm and cross section 0,785sqmm (4:1). A 4mm line has 12,6mm circumference and 12,6sqmm cross section (1:1). This is a very simplified approach of course and doesn't take into account the construction of a braided line, but is generally valid.
Another argument for the higher wear of thinner lines is that they have lower surface contact area when rubbing against each other (e.g. crossed lines when looping), therefore higher pressure and abrasion.
To support the loss of breaking strength - on the photo here is the exactly the same 1,75mm line, new (black) and 2 seasons intense use (grey).
35% loss of breaking strength measured with a professional test machine where the line was made. The test was carried out with a specimen from the midst of the lines length, i.e. far away from lines crossing and splices.
I can post better photos when I find the leftovers of this line set.