The key to maintaining strength at sleeved sewn loops is to wet the line first.t_huebs wrote: ↑Tue Mar 09, 2021 5:39 pmI'm off Q-power after the cover died and the core was exposed right at the base of a sewn termination, after not much use foiling. I was thinking about trying the knots just to see but after watching the pull tests, I think I'm going to skip it. Watch here:
Most kiters know that a child's kite flown on cotton string will cut right through your dyneema kite line. The strength critical temp for dyneema is around 150⁰F (66⁰C). Its melting temp is 277⁰F (136⁰C). The friction of the cotton line going over kite lines will cut right through dyneema by either melting it or reducing its strength under load.
The needle and Nylon or Dacron thread of a fast moving sewing machine will do the same. By wetting the dyneema, and even the thread, you can avoid cutting the inner strands with friction heat.
No factory would ever go to these lengths to ensure full strength of the splice loop. This attention to detail is something that you can only get by building the lineset yourself.