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Re: [8flood8] tech cord? (big bros):
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moof
Nov 28, 2007, 2:46 AM
Views: 7870
Registered: Oct 17, 2003
Posts: 400
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To clarify. There are several formulations of "tech cord" around, often generically called spectra cord. They are not all created the same.
1. Kevlar. Do NOT buy kevlar cord. Kevlar self abrades under load much worse than the rest (fibers are abrasive to each other). It is actually pretty hard to find kevlar cord these days, and this is why.
2. Spectra cord, comes under a few names, but is very slipper inside, usually has a polyester sheath. Works great, but as stated it REALLY needs a triple fishermans with decent tails (2" or longer). Spectra has a very low melt point, but for our purposes in climbing it is rarely an issue.
3. Tech Cord from mammut. Relative to kevlar (another "aramid", whatever that means). Very stiff, good stuff. The pamphlet that came with mine says a double fisherman's is OK, but claims you get a but more strength out of a triple. Not sure if this has changed, RTFM.
4. Kevalr/Spectra blends (I forget the brand name), also hard to find as the blend didn't really help the self abrading enough to help much.
There is an excellent writeup about many of these by Tom Moyer, well worth the read. Google "high strength tech cord tom moyer" and you'll get a copy or 10, or click on http://www.xmission.com/...gh_Strength_Cord.pdf
(This post was edited by moof on Nov 28, 2007, 2:51 AM)
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Edit Log:
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Post edited by moof
() on Nov 28, 2007, 2:51 AM
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