Stuff breaking due to expected wear and tear is one thing, but when it's similar in degree to a wheel which previously had shown little if any outward signs of possible failure coming off your car while driving down the road then it's a far more serious issue.
To clarify at the beginning - like others have said, stuff breaks - due to lots of reasons.
I would designate PU sleeved trim rope as "faulty design" because the use of PU sleeving makes it is impossible to see when the internal rope lines are failing.Matteo V wrote: ↑Fri Mar 16, 2018 5:00 pmTo clarify at the beginning - like others have said, stuff breaks - due to lots of reasons.
Regarding non-wear parts:
1. Faulty design, major manufacturing defects, and improper materials will most likely show through in the first 1-20 sessions
2. Poor design, minor manufacturing defects, and less than ideal materials will most likely show through in the next 20-100 sessions
3. Well designed, with no manufacturing defects, and ideal materials will last 100 session or to the manufacture specified use period (yes, I know no manufacture does this!)
Leader lines, threads in the stitching (not improper stitching), stitching technique/stitching pattern, non-moving sheathed lines, cleats, bar grip, bar integrity, are all parts subject to minimal wear which should make the 100 session mark.
For wear parts such as unsleeved lines like depower lines and safety lines, sheathed safety lines, or any line in direct contact with sand, lifespan is dictated primarily by environment. Certain sands are simply more abrasive than others, and some can be relatively harmless on a line, but destructive when contained in a partially sealed space with lines. So no lifespan can be given for these parts other than what they average under similar conditions.
I am no fan of PU sleeving on depowerlines because of how older sleeving made it harder to adjust sheeting while fully turning the kite(bar). Cabrinha, at least as of 2017 bars, did make this a non issue as the PU they use is now super slick and does not bind when the bar is turned.
I would disagree with this statement since the CL loop can be (and is) effectively sealed against sand infiltration. Visible wear is apparent when the sheath is compromised and you can easily notice that there is sand infiltration into the PU sheath. Thus is is little different from a bare line.
Matteo V wrote: ↑Sat Mar 17, 2018 5:13 pmIt is faulty design because:iriejohn wrote: ↑Fri Mar 16, 2018 8:10 pm.I would disagree with this statement since the CL loop can be (and is) effectively sealed against sand infiltration. Visible wear is apparent when the sheath is compromised and you can easily notice that there is sand infiltration into the PU sheath. Thus is is little different from a bare line.
1. It is not always apparent when the (black) PU sheath has been compromised.
2. A rope which can be damaged by sand and grit is used inside the PU.
This is actually a good idea. Now I've seen some up close with some experience of failing bars and ropes, and had a good look at how they work, they make a lot more sense then front line trim bars...!