Looking for info, methods, etc on how to best "pre" strech dynema to reduce lifetime streching (not creep)
I know Sam posted some data on it, but my searches have 't found it.
thanks!
how do you stretch HM line?
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Posted: Aug 09, 2019 - 11:54 AM
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- Rank: Mate
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Posted: Aug 09, 2019 - 12:23 PM
Like this of course
https://www.youtube.com/watch?v=LR7HcsDY3kQ
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Pete Knapp
Schodack landing,NY
Goodall Viper,AHPC Viper,Nacra I20
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Posted: Aug 09, 2019 - 12:29 PM
Thanks Pete:
He looks like a real pro!
I love this comment: "What I've learned watching your video's is that boating isn't for me. Thanks for saving me a fortune!"
I probably wont be doing this method -
- Rank: Lubber
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Posted: Aug 09, 2019 - 03:08 PM
After I splice the line, I use a hydraulic ram and a load cell to run it up to 50% of it's breaking strength and hold it there for 30 mins or so. That resets the fibers that are loosened up during the splicing process.
The pre-stretched dyneema that I purchase has been run through a heat/steam die process to reduce the diameter and align the fibers. This is how all of the "pre-stretched" dyneema that I use is created.
-Mike -
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Posted: Aug 09, 2019 - 03:21 PM
Thanks Mike,
can i borrow your ram? -
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Posted: Aug 09, 2019 - 05:29 PM
You're going to need a big truck. It's attached to a 30' I-beam.
If I can figure out how to edit a video clip, I'll post one of finding out what the breaking point is on a soft shackle
it's more fun to break stuff than just stretching things. -
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Posted: Aug 10, 2019 - 09:05 AM
I stretch it between my truck and wife's car tow points using my main sheet system. I'm figuring that I can put near 1k lbs into it. On smaller applications under 10 ft and under 1/8 line I stretch it on my bow string jig
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Captain Chris Holley
Fulshear, TX
'87 Prindle 19 "¡Hijole!"
'74 sunfish "1fish"
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