Author Topic: Line strength test  (Read 16699 times)

Offline slipperybob

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Re: Line strength test
« Reply #30 on: Feb 12, 2021, 08:29 PM »
YGK G-Soul Upgrade X-8 14# listed.
Quote
Alright so I decided to actually endeavor in a few various knot trails against the FG knot on the 14# G-Soul Upgrade. Of which first test run I tied it only some left over fluorocarbon leader of Seaguar InvisX can't remember if it's 40# or 30#. It was kind of a dirtly sloppy FG knot tie job, but it seems to be holding. What I was attempting was to see if I slip a section of a line onto my standard knot to see if it would create a buffer to support a higher knot strength. The results was astonishing.

Line upon itself yield a result of 5# 9 oz.
Line with 80# braid yield a result of 5# 8 oz.
Line with 4# gamma polyflex: 5# 9 oz.

The results was very consistent knot break. I suppose if the loop right at the knot end next to the main line still compresses the main line, it will create an uneven pull, resulting in a weak spot. That also indicates that even if the line is set onto a dowel the size of the dowel will have a lot of influence on the line break when creating an uneven pull throughout the cross section of the line.

Then doing some bonus testing. Same line still and other knot end is still the same FG knot to fluorocarbon leader.
Palomar knot: 4# 9 oz.
Double Palomar knot: 5# 3 oz.

Then with remaining section of the line, I decided to wrap it around the tackle clip in the same manner as the FG knot to a leader. Again what an eye opener result. Here I was not expecting a higher break strength.
Mock FG onto a line clip: 7# 14 oz.

So onto another FG knot to FG knot trials. This time I'm using standard 30# mono. I need to tie two ends so no fluorocarbon leader, my arms not that long and leader material is a pain to tie. I started out with rather sloppy FG knot tying, then went onto doing it more carefully. My one other FG knot was holding so well, it stood throughout all other three tests, with the same line.

The results with three trials. 8#4, 8#15, 9#14.

The line breaks just at the knot. This is probably due to the line pinch and the main line is not pulled with even pressure throughout the whole cross section. So this means that I should probably use a leader and FG knot instead of tying direct to lure or end tackle for my purpose
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Offline slipperybob

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Re: Line strength test
« Reply #31 on: Feb 12, 2021, 10:48 PM »
Out of curiosity I decided to check out the knot strength on the FG knot.  It's an FG knot to FG knot on 30# mono.

YGK G-Soul Upgrade X-8 line is the candidate since their package list the max line strength.  So I am curious as to what can I get.

FG knot to knot on 30# mono.
14# listed with three trials: 8#4, 8#15, 9#14
16# listed with three trials: 13#10, 14#1, 13#13

compared to my knot to swivel.
14# listed with four trials: 6#15, 6#12, 7#0, 6#15
16# listed with four trials: 9#0, 9#15, 8#15, 8#15

I took more care tying the 14# sequentially and got higher break resistance results.  While the 16# I was able to just be more consistent and didn't need to take extra time on my looping adjustments.   Again what is strange is that with the test samples, had one orginal FG knot that held through all three trials while the other ones I retied on the same line sequentially kept breaking.  What are the chances of that?  Meaning that one of the FG knot I ties is still potentially have a much higher break strength that my results.  With my knot to swivel, it's consistent that one of the knot break is either one.  I never figure the FG knot to give such a higher break strength yield.  I was never good at tying the FG knot and always forget how to.  I have to reference youtube just to tie it.  That's now often I tie it.  I probably tied more FG knot this week than I have in my entire lifetime, so it feels.  I am going to put the FG knot into my practical use now.
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Offline slipperybob

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Re: Line strength test
« Reply #32 on: Feb 21, 2021, 08:57 PM »
Sufix 832 Advance Ice Braid 4# .100 mm : FG knot to FG knot on 30# mono

Three trials all knot breaks: 13#7, 12# 1, 12#1


Sufix 832 Advance Braid 10# .200 mm : FG knot to FG knot on 30# mono

Three trials all knot breaks: 15#, 20#, 19# 14


Sufix 832 has always been a long time favorite and was the very first 8 strand braid I've used in small diameter.  I've always felt that this line was a bit stronger than it's box listed# and with this FG knot trail I'm finding that is even more so true.  These knot breaks are getting me closer to the actual line tensile breaking strength.  It's just way to radical to find such high discrepancy in the box listed line strength. 
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