2mm Dyneema cord for apex guylines

Discussion in 'DIY & MYOG' started by wtrfall, Nov 10, 2019.

  1. wtrfall

    wtrfall Trekker

    Does anyone have any recommendations for where to pick some dyneema guyline cord from? It's for my Stratospire Li apex guys which I think uses Lineloc 3's.

    If anyone has any spare in yellow/orange I'd be happy to buy some off you, I just need two lengths for my guy lines.

    Thanks!
  2. WilliamC

    WilliamC Thru Hiker

    It's generally considered that 2mm line will slip in Lineloc 3s in severe conditions. 2.8 or 3mm might be preferable. Here is one place that sells 3mm.
  3. Whiteburn

    Whiteburn Thru Hiker

    Quite right...…..…..2mm cord will slip in gusty conditions unless you put a hitch in it below the LL.
    IMO 3mm dyneema is overkill...……..THIS 3mm polyprop is a lot cheaper, doesn't slip & has a breaking load of 170kg, way more than adequate (the LL will probably break or the fixing tear out before that).
    PhilHo likes this.
  4. wtrfall

    wtrfall Trekker

    Thanks both

    If anyone has any spare i could buy it would be much appreciated, I don't really need 15m of cord :D
  5. Whiteburn

    Whiteburn Thru Hiker

    You can buy different length of the 3mm polyprop: 3m - £2.19, 5m - £2.49, 10m - £4.79, etc.
    Cheap as chips & spare cord always comes in useful.
    PhilHo and Lamont-Cranston like this.
  6. DuneElliot

    DuneElliot Section Hiker

    With one exception (in my experience)...the 2mm Dyneema cord that Zpacks uses with their Duplex. I've used it for years and been in some nasty storms...no slippage.
    Lamont-Cranston and WilliamC like this.
  7. WilliamC

    WilliamC Thru Hiker

    Zpacks at one time we're using cord from Lawson. I've never had that slip but then I try to avoid severe weather so I'm hesitant to recommend it to others based only on my own experience. Lawson is currently developing some 2.5mm cord specifically for Linelocs.
    Last edited: Nov 11, 2019
  8. Whiteburn

    Whiteburn Thru Hiker

    I tried the Zpacks 2.3mm cord (that they stated they used on their tent & didn't slip in LL3's) on my DCF Duomid & guess what...…. it did slip in heavy weather. Replaced the 4 corners guys with the 3mm MLD stuff & got used to putting a slipped hitch in the other lines.
    Robin likes this.
  9. Teepee

    Teepee Thru Hiker

    Thin line can be backed up with a sliding guyline knot. It doesn't make sense to use it on ground levels points, but for tent apex line it'll work great. The knot just slides and grips like a Prusik, doesn't have the hassle factor of hitching.

    It means you can use 1mm line and save weight/money
  10. Whiteburn

    Whiteburn Thru Hiker

    As an aside: by my scales 2mm Dyneema weighs ~3.2g/m while the 3mm Polyprop weighs in at ~3.7g/m so a 3m guy will be a whole 1.5g heavier.
  11. PhilHo

    PhilHo Thru Hiker

    Plus Dyneema is more likely to slip (memory from sailing days).

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