Mammut Pro Cord 5mm as a cordelette??

[Dustin_B]

So what do you think of using 5mm Mammut Pro Cord as a cordelette? My current cordelette is 5mm spectra (and still stiff as hell after 4 years of use). 5mm Pro Cord is rated to 5.5 kN. Can't remember what the breaking strength of spectra is. Thanks for your insights.

[OlympicMtnBoy]

Bluewater 5.5 mm spectra cord is over 14 KN. 5 mil non-spectra seems awful weenie, especially if you deduct ~30% for strength lost at your knots. I'd go with 7mm if you don't want to use spectra.

[dberdinka]

I recently went back to 7 mm nylon after seeing the research that showed all the high tech cords lost significant strength very quickly due to flexing. Nylon is stronger in the medium and long term, knots and handles far better and is way cheaper.

[t_rutl]

I recently went back to 7 mm nylon after seeing the research that showed all the high tech cords lost significant strength very quickly due to flexing. Nylon is stronger in the medium and long term, knots and handles far better and is way cheaper.

 

i'd like to read up on that...any links to some of the info D?

[dberdinka]

just google "comparitive testing of high strength cord". It's a very thorough and convincing analysis. If you can live with the bulk and weight nylon is better in all other regards it seems.

[ryanb]

After reading the high strength testing PDF I bought a bunch of the 6mm (red) mammut pro cord. Almost as thin as the spectra, handles much nicer and doesn't have the disturbing strength loss characteristic.

 

Good Stuff

 

 

[t_rutl]

thanks for the info.

 

i've always used nylon for tied coredelette.

 

but also use the Mammut 240cm Dyneema Contact Sling.

 

would you expect to see the same issues there?

[AR_Guy]

Also see the discussion in Long's anchor book about the advantage of the stretch factor of nylon vis-a-vis the tech cord.

[Dustin_B]

thanks for the input. sounds like my 5mm pro cord is a little on the wimpy side.... guess I need to bump up to 6 or 7mm!

[JasonG]

Well, materials are evolving all the time and that analysis was 10 years old. I use this stuff at work and am quite impressed. A bit different than the climbing cord out there, and cheaper:

 

http://shop.torresen.com/ships_store/index.php?p=details&mfc=Samson&sku=870012706030-grey&frm=g

 

We've used this stuff for years out in the sun; it's constantly being flexed and loaded. I've never seen it break, even when it looks beyond ratty. I know this isn't a climbing test, but it makes me wonder. Fishermen friends have used in the mountains for years . . .and I think I may join them.