The Amazing Lightweight Rope That Can Lift A Car!!!

Рет қаралды 16,387

Күн бұрын

It used to be that the gold standard for strength and low stretch in sailing was this, stainless steel.
Now it’s this, a synthetic fibre called Dyneema, which is not only stronger than steel, but soft, and much nicer to cuddle with.
Dyneema is also much lighter, and 100 feet of this weighs only one pound, or 450 grams, so it floats. This doesn’t float.
Finally, you can us Dyneema line to replace both the wires to hold up your mast, and as fasteners like this shackle, by making soft shackles.
These soft shackles are very easy to make, like in this video, and very strong. This soft shackle made with 3/16” or 5mm Dyneema is strong enough to lift a car, plus you can make them in any length you need.
A single strand of this 3/16 or 5mm Dyneema can hold two tons. The strength of a soft shackle really comes down to the type of knot you use.
We’re going to need more than a 1.5 ton car to really put this to the test, so I enlisted the help of this six ton hydraulic press, and attached the soft shackle like this.
Even with a simple overhand knot, which is the simplest kind of knot you can use in a soft shackle, we could still lift a car, that just wasn’t enough weight, so hopefully this six ton press will help us find the limits.
The Dyneema is so strong that it doesn’t break, but the overhand knot is starts to slip at around 1.75 tons, still more than enough to lift a car. Most lines break before the knot, but not Dyneema.
If you need more strength, use a better knot, like a Diamond knot, although those are more difficult to tie. I tried that and just wound up deforming this piece of steel in the press, but the Dyneema didn’t break.
These soft shackles have all kinds of uses on sailboats, like connecting the mainsheet to the clew of the main sail, or connecting the spinnaker blocks to the boat, or even replacing a busted steel clew ring.
On my boat I use Dyneema lines and soft shackles for connecting the main sail to the main sheet, as well as for the main outhaul and reef lines.
I use Dyneema soft shackles for connecting the spinnaker turning blocks to the aft beam.
And that’s a Dyneema soft shackle for attaching the spinnaker sheets to the spinnaker clew, and the jib sheets to the jib clew.
You may think that foiling is the greatest gift to sailing in the last decade, but foiling wouldn’t be possible without materials and control lines made of Dyneema.
Moreover, everybody can benefit from Dyneema lines on their boats, whereas very few boats can benefit from foiling.
Overhand knot holds 75% of line strength, double figure eight holds 150%.
Do not use for safety critical applications (e.g. 4x4 recovery)!!!
Disclaimer:
- This content is offered solely for your education and entertainment.
- There are no warranties, expressed or implicit, about any content or its fitness for a particular purpose.
- There are risks of injury, death, drunkenness, and financial hardship involved in sailing.
- The skipper is always responsible for the safety of their vessel and crew.
- Sailing Tips is not responsible or liable in any way for anything that happens on or anywhere near your boat or any boat that we are not in command of.
#howto #tie #softshackle #Dyneema #knot #sailing #howtosail #learntosail #sailingtips

Пікірлер: 31

@rickace132 5 ай бұрын

Just for those that are wondering, Dyneema is a brand name. The name of the material Dyneema is made out of is UHMWPE. Spectra is also a brand name made out of the same material.

@SailingTipsCa 5 ай бұрын

You’re absolutely right!

@nomars4827 4 ай бұрын

Though Spectra and dyneema specs have some differences.

@SailingTipsCa 4 ай бұрын

@@nomars4827 Yes some slight differences in the manufacturing process as I understand.

@rudetoy8264 3 ай бұрын

Wow, the content is educational and fun! Love it

@SailingTipsCa 3 ай бұрын

Thanks - this video was fun to make too!

@patriciapiper6294 Жыл бұрын

THIS DYNEEMA PRODUCT IS FABULOUS!! YES IT WILL BE AN ASSET TO ANYONE. I WAS HOPING THAT YOU WOULD SAY THAT IS ALSO MADE OF USED PLASTIC IN SOME SPACE AGE PROCESS.! ANY WAY THANKS FOR THE UPDATE AND DEMONSTRATION!❤👍🇺🇸

@SailingTipsCa Жыл бұрын

I agree - Dyneema is totally amazing!!! I haven’t looked into how it’s made but will!

@CaptainRon1913 5 ай бұрын

The only problem with Dyneema for standing rigging is... well maybe it isn't a problem.... It is susceptible to UV rot. For standing rigging, you have to shield it or put a sheath over it so it doesn't see sunlight. Sheets etc... doesn't really matter since they are easily replaceable. Having your rig collapse in a heap not so much.

@SailingTipsCa 5 ай бұрын

It actually stands up to UV better than most other synthetic materials on a boat! Colligo recommends replacement after 5-8 years in the tropics but I think you can easily get 10 years in more temperate climates.

@alexgames2664 Жыл бұрын

The composition is pet. The question of the ratio of price and service life in the sun. How long will it work in the sun?

@SailingTipsCa Жыл бұрын

Amsteel is made from Dyneema, which is remarkably UV-resistant for a textile. I’ve had no issues with UV degradation on any lines kept out for a few years, and some people are reporting useful life as long as 5-10 years or more. The nice thing about Amsteel/Dyneema is that it becomes visibly fuzzy as it ages, so there is typically plenty of warning before bad things happen!

@USA4thewin Жыл бұрын

cuddle with ,, lol you earned a lifetime sub dude

@SailingTipsCa Жыл бұрын

LOL - I wasn't sure how that would land so I'm glad you liked it! My wife and I both thought it was funny!

@cadyaroop 3 ай бұрын

Is it biodegradable or recyclable?

@SailingTipsCa 3 ай бұрын

Dyneema has proven itself to be technically recyclable however whether local recycling facilities will accept it or not as part of their widespread commodity recycling programs is another question, so you may need to ship it off to be recycled. Personally I just re-use it for less critical tasks when it becomes too worn for full-strength applications.

@balla2172 Жыл бұрын

What strand is this?

@SailingTipsCa Жыл бұрын

It’s Samson Amsteel Blue which is made from Dyneema! ca.binnacle.com/pdf/Samson%20Amsteel%20Blue%2012%20Strand.pdf

@sentenall338 6 ай бұрын

L ve your work...more videos please 🙏💪✊✌️

@SailingTipsCa 6 ай бұрын

Thanks - glad you like the videos! A little busy with my day job at the moment but hope to get back to it soon!

@ysesq Жыл бұрын

doesnt have much abrasion or uv resistance

@SailingTipsCa Жыл бұрын

Abrasion is the worst enemy of Dyneema in my experience! It does degrade in UV compared to stainless, but I still find I get several good years out of, although I also live in moderate latitudes so the sun isn't as strong as equatorial regions.

@kayzinti4452 Жыл бұрын

Nor does it corrode. Pick ypur poison.

@SailingTipsCa Жыл бұрын

@@kayzinti4452 Exactly, and it’s pretty easy to work with, create splices etcetera, easier than many other materials.

@robertthomas4329 3 ай бұрын

One corner of your car? What’s that? 800 lbs ? You call that shock loading? Not impressed.

@SailingTipsCa 3 ай бұрын

In another video I strength tested this type of soft shackle to 3,750 lbs using a hydraulic press which is more than this car weighs. This tractor has a hydraulic pressure release at around 1,200 lbs and I was hitting that in this test, which wasn’t enough to either lift the front of the car nor break the shackle as expected. This is weaker than other forms of soft shackles but still more than enough for many use cases.