Hi guys,
I've never used this new monofilament wound Dyneema lines on my kites.
The fleebay says "much easier to manage when setting up your kite.", any experience? Do they tangle less or easier to untangle?
Thanks
... and maybe I can jump on this one too and ask, what about stretch characteristic?? I would imagine the cheap brands would stretch a bit compared to the name brands! Just guessing!
Hey Dean, how much did you pay?
cheers,
Robbie 
your local knows nothing then- just goggle it -the same stuff designed by 2 different companies(they both claim they came up with it), spectra is dow chemicals(think) and dyneema by a dutch company DSM
It is just ultra high molecular weight polyethylene -or super stretched shopping bags woven together- the weaver is the only difference as well as the quality of the stock
luv
F
Looks the same as north lines, still manage to get the odd tangle but nothing major. How much?
Dyneema and spectra are different beasts! Ill try and list some details about the two
- Spectra generally has half the break strength of that of dyneema.
- Dyneema has proven to wear quicker
- whilst spectra has a coating which doesn't like extreme amounts of heat.
- You have to Splice dyneema and can't tie knots in it (well its not recommended anyways)
- can tie knots in spectra
All in all YOU CANT WIN!
I have found that there are many different types of spectra and I recently bought some 3mm Spectra with an 890kg rating where as dyneema is only like 30KG more...
Spectra and Dyneema are brand names of the same fibre.
Differences are in manufacturing of those fibres and nothing to do with if it's named Spectra or Dyneema which are just the respective trademarks of DSM and Honeywell.
dyneema/spectra doesn't stretch as a fibre- it has ten times the tensile strength of steel. The act of braiding creates a hollow tube that has some stretch - by pre stretching this takes out some of the initial stretch that can occur in the first month of flying.
once again dyneema /spectra is the same stuff just brand names, it is the quality of the braid that counts, some are even set with wax to minimise the stretch.
Q-power is spectra/dyneema- it has a linear core -straight fibres that have virtually no stretch (.001% i think) then a tight outer braid of spectra as well making it stiff and rigid.
There are different grades of spectra/dyneema which have less stretch, thinner profile as well.
Spectra/dyneema has low melting point hence easily sliced through - think it deforms at 110 degrees melts at 130 degrees. it is naturally slippery like teflon and it is hard for even dye to stick to it - that is why most lines are left white
This may explain why your lines are pretty costly,dyneema is a high mod poly fibre invented by dsm dyneema,its the worlds strongest fibre, the fibre is manufactured by means of gel spinning, would you believe its 15 times stronger than steel and 40% stronger than aramids on a weight for weight basis, dyneema is chemical inert which means it virtually unafected by uv, as well as being used in your kite lines its used in fishing cut restant materials and bullet proof vests, its generally spun from 8, 12, or 16 fibres, with a range of 50 to 650 kg strains, the tighter the weave the weaker the lines an open weave is by far the strongest, a tightly spun line loses 50% of its natural strength, braid more openly and you only lose 20%, proper dyneema has a stretch rate of 2% where tight braid had 8%, braidtech are the worlds best lines found on ozone products, check out www.braidtech.eu
Thanks for all info.
I'm more confused now:) Does it tangle as spectra lines? The fact is, my current lines tangle as hell on 2009 kite. Might be that the lines are actually older, duno.
Almost new 2010 kite, spectra lines are great, tho. So if this new ones are the same I'll buy it.
yo bris kites not my words spoken by lab technicians in a test,after testing they had the least stretch at just 2% and highest breaking resistance, of all major brands cheers
Select to expand quote
Just wondering, if the dyneema/spectra doesn't stretch, how does the trim of the kite get so affected when say a line is longer than the rest, is it because the 'hollow or tubular' parts are squashed out so effectively the line has stretched? I've had to re trim my bar/lines many times, infact once the front lines were longer than the steering by 20 cm (mind you I didn't check them for a long while).
Any ideas how they get out of trim so much? About every 10 sessions or so I have to check that the fronts match the steering lengths. I can imagine that many parts of the line set has a chance to stretch, I always thought it was the line itself and not the added parts (ie pig tails etc)?
cheers again for info,
Robbie
cheers,
Robbie
should have said doesn't stretch much but being general just as spectra has between 8 and 15 times the tensile strength of steel-depending on the steel- 10 times is a good average.
Just as I have been using many flavours of these lines for many years(35) I didn't say my favourite kites lines are the best because of some thing I read( a wise man once told me believe half of what you read and nothing of what you hear - but then he writes a lot too).
By the time stretch comes into play normally at about 85% of B/s things start to happen. The nature of the braid means that the line elongates and then contracts once unloaded -but not as much giving it some elasticity in the extreme which helps keeping things together -.e.g. spectra will break at lower loads than rated if it is a sudden loading than other styles of line e.g. nylon that will stretch maybe 50 % before breaking -spectra 2-5%. that is why they don't use it for climbing even though it is a lot lighter- the shock load from a fall will cause a break.
Your line elongation is the fibres becoming more linear from creep and therefore less elastic and more susceptible to breaking, tighter weave is more rigid therefore more tangle resistant- it wants to remain straight.
Your front lines ( I would guess you are heavier too) have the major load all the time so they can get longer and effect performance they need to be put back to even then kite parameters will be back to normal minus canopy wear (as this happens gradually you don't notice this till the kite really flies like said bucket).
best way to counteract this if you are heaver is to upgrade the Breaking Strength so you are loading the kite lines less- there will be a performance loss due to line drag so the thinner the lines are the better.
All these facts and figures have come from my head not a clipboard so to be taken with a grain of salt bucket of beer
luv
istt
Yeh a little birdy told me they are moving away from this, this year. North that is. This birdy also said some significant changes to the evo and minor but important changes to the Vegas and rebel. The bar is also very different, very different indeed.
puetzy, youd have to put your size down to some of your line issues, i kited with you at dongara in 40 knts , your a big f===er, cant imagine the strain our lines were under that avo , im not a small bloke as you know but ive never had any issues with my lines, to the eye they all appear the same, but quality through the brands are very different, i was given a brand new kite to trial, wont name the brand, in similar wind after 30 mins i was rolling it up on the beach with snapped lines , you can get a higher kilo rating line that may be worth a try, cheers oh hows that bucket of beers going
... that 40 knot day at Dongra was pretty crazy hey, my missus's poor old 9m never knew what hit it. To be honest, if that kite didn't deform so much (Rhino 2009) I would have had more fun (or atleast stayed out longer). Not sure if you remember, the 2 windsurfers that went out earlier that day, well they had an anemometer and measured 46 knots 
. Tee he, day one of our Gero trip was a bit of a baptism of fire!
As you have pointed out, I am a big f@cker and I'm a bit harder on the lines. I learned on Naish X2 and X4 kites which had terrible depower so you use the edge of the board to control power and learning this 'style' I still use this type of technique now. Infact, I like constant power with the bar against the stopper, still pulling me. As you can imagine, this pull has to give the lines a good workout.
Recently I was out with my Dyno 18m doing an upwinder/downwinder and while at my upwind position (chasing a secret flat water pond all to my self) when the wind picked up to 30 knots, so I had to park the kite at 12 and ease my way home. There was sooo much constant pull, surely the lines should have suffered so after the session, I checked them but all good. So I figure constant pull is ok, its the shock pull that isn't good, and being so heavy I don't like to crash hard so developed a steady (read lumbering) style so I don't 'shock' the lines.
Anyway, I'll look into the after market lines and see how things go!
cheers,
Robbie
