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 Post subject: Re: Hook Quality
PostPosted: Sat Jan 01, 2011 9:46 pm 
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Brown Trout
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Location: Marshall NC
Still planning on doing the test. I took my three sample and measured the wire down to four places. The standard deviation was very low. For all sample sets. Tiemco had the biggest deviation .0002. Not a big spread. The strength test was a little less exacting. The rig to load and stress wasn't predictable enough. I am going to re-think my test fixture and loading method. Still after a answer :)

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 Post subject: Re: Hook Quality
PostPosted: Sun Jan 02, 2011 6:50 pm 
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Brown Trout
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Brad, do you suppose there would be different results with barbless hooks?


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 Post subject: Re: Hook Quality
PostPosted: Tue Jan 04, 2011 9:14 am 
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Rainbow Trout

Joined: Mon Oct 12, 2009 8:32 pm
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I suspect you got a bad batch of Tiemco hooks. The 2487 is a pretty strong hook.

Hook manufacturers have to choose a balance between bending and breaking. If the hook is not tempered correctly, it can become too brittle and break or it can be too soft and bend. I think that is what happened in the case of your hook.

I suggest testing that same size and model of hook from the box that bent and from a new box against each other.

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 Post subject: Re: Hook Quality
PostPosted: Tue Jan 04, 2011 11:54 am 
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Brown Trout
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Boo... I might be able to borrow a strain gage that will latch onto the peak load at failure.
If I'm not mistaken, it may also hold and store the data for further analysis.
I've always thought of using one for knot strength tests but never got around to it.

A question I have is what affect the bending and tourquing we sometimes do to hook shanks when tying. Does it soften and weaken the hook or work-harden it and make it stronger?


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 Post subject: Re: Hook Quality
PostPosted: Tue Jan 04, 2011 2:12 pm 
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Brown Trout
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Peddler wrote:
Boo... I might be able to borrow a strain gage that will latch onto the peak load at failure.

Well, I'm not sure what my first wife's contact information is, but I'll try....


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 Post subject: Re: Hook Quality
PostPosted: Wed Jan 05, 2011 6:34 am 
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Brown Trout
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Location: Marshall NC
As small as my 'Standard Deviation' was on any of the samples I believe they all are mfg.ed to pretty tight tolerances. With .0002 or less nothing jumps out as a deference. This so far back my original theory that theres no much difference between mfg.ers.

Peddler that might be the tool for getting the strength reading.

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