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  1. #11
    Member stonecold's Avatar
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    Quote Originally Posted by turnerminator View Post
    Kingfisher do some good dyneema core-its a good price too. The 1.5mm is great for tieouts.
    who is kingfisher buddy,is it in the UK.

  2. #12
    turnerminator's Avatar
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    Yes, do a search on google for dyneema rope and it will pop up in shopping results.
    I used Future store.

  3. #13
    Senior Member Drop's Avatar
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    I've been looking about a bit, life would be so much easier if Amsteel blue was available over here. Thanks to turnerminators SK78 lead I've found these possible leads.

    2.5 mm/ 7/64 inch Marlow excel d12 / breaking load (Bl) 569kgs / 1,254.43 lbs @ £1.35/mtr* (see edit)

    Marlow Excel D12 3mm/ 3/32 Inch Bl 995 kgs/2 193.59 lbs @£2.16/mtr

    Marlow Excel D12 4mm / 5/32 inch Bl 2056kgs/4 532.7 lbs @ £2.72/mtr

    elsewhere not branded

    3mm Dyneema D12 BL 1000kg/2 204.6 lbs @£1.12/mtr, (min 5mtr) & 6mm Dyneema BL 3000kg/6 613.8lbs @ £3.09/mtr (min 5mtr)

    Marlow D12**(from www.marlowropes.com)
    * Uses Dyneema® SK78 for high strength and minimal creep
    * Max is “super pre-stretched” reducing creep and stretch further still and increasing strength
    * Lightweight with negligible creep - high performance replacement for wire standing rigging and lashing.
    * Extremely high strength for critical applications
    * Marlow ArmourCoat, increases the life of the rope by reducing UV and Abrasion fatigue.
    * Does not absorb water so floats and remains light weight when sailing.
    * Quick and easy to splice

    I'm wondering if the 2.5mm is going to be a bit on the possibly too lightweight side? (see edit)
    569kgs / 1,254.43 lbs/ 89.6 stones using a 30% what were planning to do is going to drastically change things margin = 170.7kg / 376.3 / 26.8 stones

    Am I being to cautious?, I cant off hand remember the recommended minimums for hanging (btw I'm a chunky 14.5 stones/ 203/lbs / 92kg)

    Also not sure what margin is used when it comes to BL and how it measures up to other methods of describing strength.


    *for curious bystanders,
    1 metre (mtr) = aprx 3 1/3 foot,
    10mm =1cm,
    25.4mm = aprx 1inch
    1000mm =100cm =1metre
    1 metre = 1.0936133 yard : 1yard = 0.9144 metres
    1kg = 2.20462262 pounds (1ltr of water) 1000kg = 1 tonne = 2 204.62262 lbs 1.1 US tons(?)

    **caveat, don't blame me if you end on your deriere, I've done my best but I'd feel better if people did there own research when it comes to this stuff, (don't let that stop anyone weighing in with their 2p though, if you knew me ypu'd want to double check as well), hang your own hammock and all that...

    EDIT:: 2.5mm is described as 8 strand here, (£2.25/mtr for 3mm or £1.90/mtr if bought online)
    Last edited by Drop; 03-22-2010 at 22:03.

  4. #14
    turnerminator's Avatar
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    Good work, Drop.
    Top marks.
    I understand that the formula to work out required b/s is 0.25x maximum static load. This is to account for 50% reduction in strenght form the knot, dynamic loading, creep avoidance and UV damage and abrasion. I believe we will give the rope more abrasion than on a boat, as we tie to rocks and sharp bark.
    Using the formula from Just Jeffs camping page-
    Strain on one hammock suspension side=
    (0.5x body weight)
    sin of angle

    For yourself in an apparently perfect 30 deg. BB hang, this gives 92kg on each side.
    Theoretically, this gives plenty of strength in the 2.5 mm.

    I hang at 5-10o in my dd and I weigh 108kg.
    This gives me a strain of 311 kg.
    I will be erring on the side of caution and buying the 4mm stuff, Unless I get BB-it will then be the 3mm stuff.
    Again, If anybody snaps thier suspension, blame my maths teacher. Its their fault, not mine.

  5. #15
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    Hi stonecold I bought some 4mm dyneema from here http://www.nauticalrope.co.uk/index....ex&cPath=19_38 arrived fast. I hung my hammock from it the other night. not sure if it is suitable but maybe Ok.

  6. #16
    turnerminator's Avatar
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    Thats some serious B/S rating
    900 kgs for the 2mm!
    The other widths are similar B/S to the 78
    The 78 dyneema is supposed to have less creep than the 75 though.
    The prices are good too.

  7. #17
    Senior Member Albert Skye's Avatar
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    Quote Originally Posted by Drop View Post
    Marlow D12
    I think it's good stuff; been trying to source it here in Canada.

  8. #18
    turnerminator's Avatar
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    I just rechecked and the above links form drop are for Marlow d12 made from sk75, so they should be equivalent to amsteel and ali's link too.
    The Marlow D12 78 max is the sk78 stuff.
    Ali's link is made by English Braids. their info site is: -http://www.englishbraids.com/Dinghy-...namic-line.htm
    Last edited by turnerminator; 03-23-2010 at 13:12. Reason: added link

  9. #19
    Senior Member moski's Avatar
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    Great research guys !
    Last time i bought Amsteel i bought from customsplice here on the forum.
    www.customsplice.com

    I bought:
    200 feet of Grey 7/64 AmSteel
    $48.00
    Shipping to Sweden $13.00

    But Amsteel have a tendency to just disappear in blue smoke
    So i am always looking for more.
    Moski, who no longer feels the Secret Ninja Ski emptiness..............
    B/C he got them now

  10. #20
    turnerminator's Avatar
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