Biminis in Braid - Intersting Article

Biminis in Braid - Intersting Article

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Biminis in Braid - Intersting Article - 5 August 2006 19:56:23

Andy Woodford

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I've Just read a very interesting article in the August edition of Sportsfishing Magazine.

The Author got access to the IGFA's line testing machine for a few days with a view to testing the breaking strain of various braids and also how some commonly used knots effected the breaking strain of these braids.

There were some very interesting results. The one that I found the most interesting was the fact that when 60, 40, 20 & 12 turn biminis were tested for knot strength the tests proved that the fewer the twists, the stronger the knot. The author aknowledges these weren't the results that he was expecting either. But after repeated test the facts are what they are.

I've attached a small extract from the article below and a link the magazines website. If you happen to see a copy on the stands the full article is well worth a read. It has picture of a leaping Mahi Mahi on the cover.

You'll really have to squint to read it, but I couldn't upload anything bigger than 200kb. But I think that it's worth the trouble.

http://www.sportfishingmag.com/in_this_issue.jsp?ID=42823

(Click Image for full size)

Attachment (1)

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RE: Biminis in Braid - Intersting Article - 5 August 2006 22:47:19

Doug Gordon

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From: South Australia
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This is extremely interesting, Andy, and certainly goes against conventional wisdom on the subject.

It has also made me nearly blind through squinting at your text

....so I might get a copy of that article to make sure I read it right!

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RE: Biminis in Braid - Intersting Article - 5 August 2006 23:56:52

Andy Woodford

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Doug,

It was a revelation to me. Apparently the same held true, all be it to a lesser extent, with mono.

If you have trouble getting a copy of the magazine PM me and I'll email you a copy of the article.

Sorry about the Jpeg, but it was the best I could do under the 200kb limit.

Cheers

Andy

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Post #: 3

RE: Biminis in Braid - Intersting Article - 6 August 2006 0:09:43

Andy Woodford

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I've had a bright idea.

Part one of the piece is here and part two on the next post.......

This should make it easier on the eyes.

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RE: Biminis in Braid - Intersting Article - 6 August 2006 0:10:51

Andy Woodford

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Part two.........

(Click Image for full size)

Attachment (1)

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RE: Biminis in Braid - Intersting Article - 6 August 2006 10:34:54

Doug Gordon

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Brilliant idea, Andy.
Excellent!

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RE: Biminis in Braid - Intersting Article - 8 August 2006 16:19:08

Julian Fox

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From: UK
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now that's really intersting - something like this should be communicated more widely. Didn't Hal do a test in WAngler a while back?

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RE: Biminis in Braid - Intersting Article - 8 August 2006 18:42:04

Neil Daws

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quote:

Didn't Hal do a test in WAngler a while back?

very very very very similar

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RE: Biminis in Braid - Intersting Article - 8 August 2006 20:35:10

Andy Woodford

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quote:

ORIGINAL: Neil Daws

quote:

Didn't Hal do a test in WAngler a while back?

very very very very similar

But with some very different conclusions.............

http://www.westernangler.com.au/default.asp?action=article&ID=87

quote:

Just getting back to the Bimini Twist, it’s a 100 per cent strength knot in nylon if you use more than 20 turns. In braid, I religiously use – or used to use – between 50 and 55 turns. Griffiths’ tests had Biminis tied in the braid with 70 turns, and also with 30 turns, if only to show that all Biminis are not created equal. Read on.

The first test was a gradual pull, to achieve the highest breaking strain, over each of three knots, with three tests on each. The results showed a 70-turn Bimini Twist achieved 41kg to 43.5kg, pretty good and good enough, but not 100 per cent. A 30-turn Bimini in the same braid tested out at an awful 21.5kg to 30kg, so there’s a clear enough message right there. The Midknot was almost as unimpressive, at 23kg to 28kg.

Test two was a moderate shock, like a small fish connecting. There was little elasticity here to absorb the shock, something to keep in mind when you see how weak 44kg braid has suddenly become: 70-turn Bimini 31kg to 35kg, 30-turn Bimini 15kg to 18.5kg, and Midknot 21kg to 25kg. Test three was a heavy shock, as best Griffiths could do to imitate a strike from a strong fish. Still with no elasticity for shock absorption, the 70-turn Bimini expired at around 15kg, the Midknot was good for only 9.5kg to 11kg, and the 30-turn Bimini – well, don’t bother.

Apparently conflicting results from pretty much the same tests.

It would be interesting to see how each tester tied their biminis. Maybe there was some subtle difference in the method of finishing the knot or something that makes all the difference.

I'm now going to have to try this out for myself in the shed

Cheers

Andy

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RE: Biminis in Braid - Intersting Article - 9 August 2006 7:00:39

Hal Harvey

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I haven't had time to study this up, but a couple of things at a glance; one one knot test this guy has a 101% breaking strain. Sarcasm aside, there ain't no test on earth where a knot is going to ADD strength to a line.

If his tests were done on a slow-draw line-testing machine (like the IGFA uses), any decent Bimini in nylon will not fail - i.e. they would all give 100%. So there's something wrong there. You don't need a line-testing machine to prove that to yourself, just tie a Bimini in each end of a length of line, and pull 'til it breaks.

Out in the real world, most knots fail under sudden impact, which is not something the IGFA machine emulates.

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RE: Biminis in Braid - Intersting Article - 9 August 2006 7:20:39

Alan Zecchin

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quote:

ORIGINAL: Hal Harvey

Sarcasm aside, there ain't no test on earth where a knot is going to ADD strength to a line.

Unless this was the only decent knot he tied and the line tested over ?

This is all as clear as mud now isnt it .

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RE: Biminis in Braid - Intersting Article - 9 August 2006 15:35:35

Brendan McConnell

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Here is a link to Sportfish article

http://www.sportfishingmag.com/article.jsp?ID=43557

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RE: Biminis in Braid - Intersting Article - 9 August 2006 16:52:19

Andy Woodford

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Thanks for that Brendon.

The full piece is well worth a read.

Cheers

Andy

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RE: Biminis in Braid - Intersting Article - 9 August 2006 18:21:24

Fraser Hocks

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All it really proves IMO is that the old Bimini is dam fine and if you ain't tying one before your main connection either you aint bothered about loosing the fish of a lifetime or you haven't bothered to learn how to tie them. Dead easy once you give it a few goes, and well worth the effort.

Thats my one liter of fuels worth (oh hang on thats a small fortune these days)

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RE: Biminis in Braid - Intersting Article - 15 August 2006 16:48:58

Joff Weston

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I played with that suggestion (12 turns)......Tied two bimini's (one 12/one 50 turns) in a length of 30lb xp.The result .. the 12 turn model broke 3 times in a row.I thought that to be conclusive enough to keep me tying 70 turn biminis.

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Post #: 15