more knot testing
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Posted by Rolland Hartline on 2012-03-06 17:16:22
I'm visiting my son Chad for awhile.The ice has melted and it's snowing so we are waiting for a warm up to go fly fishing. Chad said he had a spool of 8# mono that is tying 100% knots with the adjustable loop knot I posted a few years back. It's easy to tie but doesn't test as good as some knots.
We decided to do some testing. We tied a hook to each end of a piece of line about 20 inches long. Hooked one hook to a load cell and pulled on the other hook until failure. If line failed we had 100# knots. If knot failed we retied the hook and continued testing. Some times the knot that hadn't failed tested at a lower value than a previous pull. Does a mono knot connection fatigue? Both of us had first pulls where the line failed before either adjustable loop knot (9.5 to 10+ lbs). We tested 100% knots with four other knots
we tried. Two loop knots, uni knot and an improved clinch. When a knot failed it usually tested good. We tried a 8# line from another company. We tested 100% knots with some of the above knots (9.5 to 10+ lbs) but not the adjustable loop knot. We cut pieces of line and soaked in water for over two hours. Removed one piece at a time. Tied the two hooks and tested. The first pull tested around 8 lbs (100% line rated)
The next pulls tested higher. The 3rd or 4th retie tested near the 120% level. Both lines tested similar.
Chad had 14# tippet break while setting the hook striper fishing last fall so we tested 14# next. We had some 14# in the same line as the second line tested above. Most knots failed at less than 14 lbs. We tried another spool of 14#
(same line). The knots tested 10 to 15% higher with no 100# knots. Most pulls weren't near 120%. Not what what we were hoping after testing the 8# line.
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