Contact   Imprint   Advertising   Guidelines

Does a knot in the kite line really half its strength?

Forum for kitesurfers
User avatar
kinibay kiter
Rare Poster
Posts: 26
Joined: Sat Dec 27, 2008 6:44 am
Style: wave
Brand Affiliation: None
Has thanked: 0
Been thanked: 0

Re: Does a knot in the kite line really half its strength?

Postby kinibay kiter » Thu Dec 01, 2011 6:23 pm

Surely it make a difference if the knot is in you steering line or you power line/front lines
Power lines under more tension ,

I've had one in steering kinda been avoiding ....

User avatar
Bille
Very Frequent Poster
Posts: 4026
Joined: Sun Sep 04, 2011 5:37 pm
Local Beach: Lake Mohave
Gear: Ozone Edge
Brand Affiliation: Barz Optics
Jaybar Dynabar V7
Has thanked: 252 times
Been thanked: 189 times

Re: Does a knot in the kite line really half its strength?

Postby Bille » Thu Dec 01, 2011 6:44 pm

kinibay kiter wrote:Surely it make a difference
...
Power lines under more tension ,
...
Correct !!
& a LOT more tension for the front lines.

Think about a transition jump with a Kite-Loop ---
the rear lines see None of those extra G's.

Bille

User avatar
Laughingman
Very Frequent Poster
Posts: 2979
Joined: Mon Mar 16, 2009 4:35 pm
Local Beach: Kettle Point, Mitchell's Bay, Rondeau Bay
Favorite Beaches: Kettle Point, Mitchell's Bay, Rondeau Bay, Long Bay, Cayo Guillermo, La Ventana
Gear: Ocean Rodeo Gen6 Flites 10m, 12m Gen2 Roams 6m and 8m, Cloud D 4.8, 6.2, 8.0, 10.4
Xeon Laluz, Mako Wide 150, Jellyfish Custom surf board quad fin 6', LF Impulse Foil and Kanaha Shapes 37" board
Engine Harness with slider
Location: Southwestern Ontario
Has thanked: 17 times
Been thanked: 17 times

Re: Does a knot in the kite line really half its strength?

Postby Laughingman » Thu Dec 01, 2011 7:10 pm

kinibay kiter wrote:Surely it make a difference if the knot is in you steering line or you power line/front lines
Power lines under more tension ,

I've had one in steering kinda been avoiding ....
I bet you have less of a chance of breaking it compared to a center line but if a steering line does break, it is never very pretty....

acctx
Frequent Poster
Posts: 276
Joined: Fri May 27, 2011 2:37 pm
Local Beach: lake travis
Brand Affiliation: None
Has thanked: 0
Been thanked: 0

Re: Does a knot in the kite line really half its strength?

Postby acctx » Thu Dec 01, 2011 9:25 pm

kinibay kiter wrote:Surely it make a difference if the knot is in you steering line or you power line/front lines
Power lines under more tension ,

I've had one in steering kinda been avoiding ....
It takes less than 5 minutes to tap it out with a hammer, there is literally no reason to leave the knot in.

User avatar
dyyylan
Very Frequent Poster
Posts: 1754
Joined: Sun Jan 02, 2011 11:45 pm
Gear: N/A
Has thanked: 0
Been thanked: 1 time

Re: Does a knot in the kite line really half its strength?

Postby dyyylan » Fri Dec 02, 2011 1:19 am

Hmm, does this affect leashes also since they're so much thicker? I've got a bunch of knots tied in mine because it dangled too much, but I would hate to miss a handlepass and have the kite fly away because I knotted my leash.

User avatar
edt
Very Frequent Poster
Posts: 7328
Joined: Fri Jul 16, 2010 6:27 am
Kiting since: 2010
Local Beach: Michigan
Gear: ride hard, no regrets
Has thanked: 533 times
Been thanked: 668 times

Re: Does a knot in the kite line really half its strength?

Postby edt » Fri Dec 02, 2011 2:34 am

dyyylan wrote:Hmm, does this affect leashes also since they're so much thicker? I've got a bunch of knots tied in mine because it dangled too much, but I would hate to miss a handlepass and have the kite fly away because I knotted my leash.
Sure you can snap your leash this way. What are these leashes rated at, I think mine is 1500 pounds? If you drop the bar in the air and fall to the end of your leash good chance it will snap if instead of 1500 pounds it breaks less than half, maybe 500 pounds.

If on the other hand your leash is rated at 5,000 pounds, knot it all you want.

User avatar
detourpr
Frequent Poster
Posts: 281
Joined: Thu May 01, 2008 5:51 am
Local Beach: San Juan
Favorite Beaches: Parguera (PR), St. Marteen, Aruba, Cabarete
Style: Freestyle, Freeride
Gear: SS RPM, North Fuse, Skywalker, LF
Brand Affiliation: None
Has thanked: 0
Been thanked: 0

Re: Does a knot in the kite line really half its strength?

Postby detourpr » Fri Dec 02, 2011 4:25 am

Hi everyone. I see you all agree that a knot will affect the strength of the line. How about the effect on the performance? Will a couple of very small knots on a back line affect the performance of the kite?
tnks

sarc
Very Frequent Poster
Posts: 1629
Joined: Sun Jun 11, 2006 4:01 am
Has thanked: 37 times
Been thanked: 135 times

Re: Does a knot in the kite line really half its strength?

Postby sarc » Fri Dec 02, 2011 8:05 am

Hi
I have done several tests using Q_Power line (the best line out there) and a pulley.

A normal know (granny knot) really decreases line strength and I could snap the knotted line easily with the aid of the pulley. I'd say 50-60% is a good guess.

A figure of 8 knot is much better and I was unable to snap the line.

Cheers

fromanoc
Rare Poster
Posts: 2
Joined: Fri Jun 22, 2012 6:57 am
Local Beach: Massachusettts
Favorite Beaches: Hawaii
Gear: Cabrinha Crossbow 13m
Brand Affiliation: None
Has thanked: 0
Been thanked: 1 time

Re: Does a knot in the kite line really half its strength?

Postby fromanoc » Fri Jun 22, 2012 4:22 pm

I found this thread because I also found a knot in the center lines of my kite, which I only used once and the knot was already there (new lines that came with a used kite)

I tried everything you guys described here, but nothing worked for me, that thing was tight.

At the end I tried something that worked without applying much force to the know. I submerged the knot in WD40 for about one hour (longer might be better). After that the knot swelled and I could use my fingernails to untie it.

Just my 2 cents.
These users thanked the author fromanoc for the post:
Pemba (Mon Jan 06, 2020 10:19 am)
Rating: 3.03%

User avatar
edt
Very Frequent Poster
Posts: 7328
Joined: Fri Jul 16, 2010 6:27 am
Kiting since: 2010
Local Beach: Michigan
Gear: ride hard, no regrets
Has thanked: 533 times
Been thanked: 668 times

Re: Does a knot in the kite line really half its strength?

Postby edt » Fri Jun 22, 2012 4:34 pm

...
Last edited by edt on Fri Jun 22, 2012 10:00 pm, edited 1 time in total.


Return to “Kitesurfing”

Who is online

Users browsing this forum: Bing [Bot], duddd, lederhosen, Ventum, womble, Yahoo [Bot] and 371 guests