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Edelrid 6mm rap line?

Discussion in 'Tech Tips and Gear' started by Stevee B, Jun 13, 2013.

  1. Stevee B

    Stevee B

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    Tech gurus, what do you know about this stuff?
    http://www.theclymb.com/brand-event/289980/show-product/431035?f=mi
    $399 (regular $800) for 200m (over 600') of 6mm rap line - aramid fiber, looks like it would be a good pull cord (extremely low stretch) that could also be used for rappelling in a pinch.
    If 3-4 people wanted to go in on this with me, we could all have some sick 66m pull cords.
  2. ratagonia

    ratagonia

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    Hmmmm. Aramid.

    Rappelling: cuts on itself, so don't rappel on it more than 4 or 5 times.

    Pull Cord: Hmmm. 6mm aramid will weigh more than 6mm polyester. Not sure what the advantage is, other than bragging rights. Oh, and it will likely weigh and cost more.

    If you're going to go fancy expensive pull cord, that Amsteel that Brendan has been using is really cool. Totally static, very light, very strong. Might cut over an edge, but... Like this - not sure what size he is using:

    http://www.go2marine.com/category/18290/spectra-dyneema-amsteel-ropes-and-lines.html

    Tom
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  3. Brian in SLC

    Brian in SLC Brian in SLC

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    Probably Technora? Sterling has been selling some 6mm lines made from Technora, and, their coveted canyon ropes all have Technora sheaths. Mine has a fair bit of mileage rappelling on it, and, you can't hardly tell its been used. I think Sonny has a C-IV that has a fair amount of use as well.

    Edlerid bills it as a rappelling line, which, makes me wonder if they just mean as a Reepschnur-esque pull cord...but also as a hauling line. They don't warn against only using it a couple of times.

    I'll bet its a durable little bugger. My BW 6mm aramid rope is pretty well used. I think mine is 23 g/m which equates to about 3lb for 60m. Fits in a small bag on my harness if need be.

    This Edlerid is 25 g/m. My bet is that its fairly burly.
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  4. ratagonia

    ratagonia

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    Technora is an Aramid. http://en.wikipedia.org/wiki/Technora

    Sterling and Bluewater have been selling ropes with aramid SHEATHS for some time.

    I asked about this some time ago with one of these shops. The answer was that it was OK to rappel on it "once in a while", but not on a regular basis. The specifics were very hazy. I have an email in to Edelrid asking for clarification.

    The strength of a kernmantle rope is in the core. Technora sheath (and 50% technora sheath) ropes have a lot of cut resistance and last a long time, and have nylon or polyester cores (or polypropylene in the case of the Sterling CIV) that do not deteriorate with flex. They are very different than a Technora core and sheath "rope", such as this "Rap Line" is likely to be.

    http://www.edelrid.de/en/sports/products/ropes/rap-line.html

    Some info from Tom Meyers, though not directly applicable:

    http://user.xmission.com/~tmoyer/testing/High_Strength_Cord.pdf

    Tom
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