Thanks, Bill for posting the video. I'm more than ready for kiting to be done with its anti-tech attitude.
Very interesting test and results. Great to see some comparative numbers for the strength of kite line terminations, sewn/sleeved loops versus bare spliced loops.
Interesting where the failure occurred in the sewn loop, looks like just below the start of the sleeving, I would not have suspected the failure there, would have thought the stitching holding the sleeving together would let go first.
Failure point on the spliced loop looks like it was at the kiteline loop, yes ? Hard to hit pause at just the right point to freeze it at rupture. Did it fail right at the end-point of the loop, crushed by the loop of the heavier pigtail ?
Looks like you are testing Switch white front flying line, rated at 395 daN or about 400 kg. Are the 263 & 305 kg load failures shown lower than the line's load rating from the high strain rate of the test ? Looked like a pretty fast test.
Are the single tests shown representative of the average strength of each termination method under test ? Always a problem with doing tests like this, one, two, or even three tests of a configuration will give you an idea what ball-park you are in, but to know with any certainty or an acceptable standard of deviation, you have to run a bunch through testing.
Still, great to see some real quantitative testing - thank you !!