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November 24, 2020 3 min read
Dyneema rope has fast become the market leader for performance rope. Dyneema is an Ultra High Molecular Weight Polyethylene fibre that was developed in the Netherlands just over 20 years ago.
Dyneema is lightweight and is the World's strongest fibre. Being lightweight and strong are not the only characteristics, the dyneema fibre is also water and UV resistant.
Here at Sailing Chandlery we sell a huge amount of dyneema rope in various formats, whether that be a 12 strand dyneema rope, or a dyneema core rope with a harder wearing jacket. We stock a good selection to help you with everything from your trapeze lines through to yacht halyards.
If we have a think about where dyneema could be used on your boat there are initially two areas to review:
Think about your trapeze lines, can you replace the heavy wire with 2mm dyneema? A 2mm dyneema will come with around 450kgs of average breaking strain, plenty to hold you up above the water.
Your shrouds are the same, many pre-stretched dyneema ropes can act as shrouds too.
Also think about your shackles, probably metal and probably bouncing on and damaging your deck and boat in some areas. Our dyneema shackles are lightweight, easy to connect and certainly won't leave chunks out of your deck.
If you put a polyester rope under strain it's going to stretch. If you are using a 10mm braid on braid rope for your yacht halyard you will see around 3.7% stretch at 20% of the breakload. The average breakload would be 2,400kgs. If you change that for an 8mm dyneema core halyard rope the stretch would be 1% and you would increase the breakload to 3,570kgs with a thinner rope. Thinner rope means less friction while hoisting and retrieving your sail.
With dyneema being stronger is does mean you can work with thinner diameter ropes. Another popular thing to do is to taper halyards down to only the dyneema is showing along parts of the rope. This retains the strength you need but reduced friction where fast launches are needed.
Having less stretch in your rope will help to keep the sail where it should be keeping the sail shape leading to more speed through the water.
With just these two options you should have been able to help reduce the weight on your boat, along with the friction of your ropes as they go through the systems. We've also potentially improved your sail shape, or at least kept the sail where it should be in the gusts. This has made your boat lighter, easier to sail and hopefully faster.
We sell a variety of dyneema cord at Sailing Chandlery. Our most popular are the 3mm dyneema and 4mm dyneema ropes but we also supply dyneema from 2mm through to 12mm.
You will need to choose whether you need a 12 strand dyneema rope or a dyneema core rope with a harder wearing jacket.
Read more about our dyneema cord options.
If you have questions about any of our dyneema ropes then please do get in touch, our team are here to provide you with helpful advice.
The sail numbers were simple to attach
Great value for money and swiftly delivered as always by Sailing Chandlery.
Very good sunglasses, I’ve just had eye surgery and was struggling with peripheral light sensitivity, these are great for that and will be terrific next season sailing.
Great to see these available again, much better quality and sensitivity than the alternatives
We have just purchased the Mersea twin Laser box trailer. Ordering the trailer, and adding the lid afterwards, was easy and straightforward with accurate lead times for its delivery. We paid for delivery to the South Coast and the trailer arrived bang on time along with other items we ordered. Fantastic customer service all round!
The trailer had its first trip this weekend, a 3hr drive on a mixture of town, country and motorway roads and it was a dream to tow - no noise save the odd rattle across potholes, easy to see in the car mirrors and very easy to connect and pull. It's also easy to manoeuvre two by just two people.
Our junior sailor was delighted by capacious box section with two access points and he was able to stow all of his kit to travel and then all covers, bags and kit whilst on the water today.
We're very pleased with the trailer - thank you Sailing Chandlery!
Good quality splicing tool, sensible price and swiftly delivered. Thank you
The mast was delivered the next day what a excellent delivery service I had the mast by 0830 I now know I can count on you, well done.
The 100m reel of 4mm pre-stretched polyester rope I ordered for our Club's fleet of training dinghies is very good quality and really competitively priced. It arrived quickly so we could re-rig control-lines before the week's training course finished.
Quick to order and fast delivery, thank you. Good to have the wheel washers and retaining clips included in the package.
Cannot fault the service received. Queries responded to very quickly, thank you Jason. Very fast, efficient despatch and delivery. My son is very happy with the Aqua fleece.
Wouldn't hesitate to use again.
Great service from Sailing Chandlery - ordered late Thursday evening and my order was dispatched on the Friday, delivered on the Monday (standard delivery option).
The Salopettes seem well made, good fit (per sizing guide) and comfortable. Also very lightweight - time will tell if that equates to less durable as they are definitely far thinner material than others I've had from different manufacturers in the past. I've only tried them on at home so far, so not tested them in the wet but I'm pretty confident they should do the job.
fast delivery with no problems
Ordered Zhik boots and wetsuit easily enough on-line, quick email response reviewing order, and they were despatched same day. Wetsuit is awesome, I wrongly ordered the boots size, a quick phone call, they explained what I needed to do, and they’ve changed them super quick. Didn’t miss any days sailing……..Highly recommend.
Got a set for my son who's 6' 3" and 92KG and L was way too small. Spoke to someone on the phone who was very helpful on sizing. Actually, went for a XXL in the end and he is happy with that fit so I would say these come up a bit small compared to other manufacturers although I guess you want a tight a fit as possible with hikers.
Vert happy with the service and advice. Video was helpful too.
Good quality product that was delivered very quickly
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