Contact   Imprint   Advertising   Guidelines

Don't show us your hook

forum for kitesurfers


User avatar
Starsky
Very Frequent Poster
Posts: 4302
Joined: Mon Apr 19, 2004 12:12 pm
Kiting since: 0
Brand Affiliation: None
Location: Ontario

Re: Don't show us your hook

Postby Starsky » Wed Jul 12, 2017 7:52 pm

1/4" amsteel has a breaking load around 7700 lbs. That is pretty much the thinnest anyone is using for a slider rope.

Bushflyr
Very Frequent Poster
Posts: 826
Joined: Thu Jul 24, 2014 11:14 pm
Kiting since: 1999
Gear: OR Razor 7m
Caution Spitfire 9m, 10m
Firewire Vanguard 5' 4"
Naish Global 5' 10"
Shinn Monk
Brand Affiliation: None

Re: Don't show us your hook

Postby Bushflyr » Wed Jul 12, 2017 8:06 pm

iriejohn wrote:
rynhardt wrote:
Tue Jul 11, 2017 6:59 pm
10mm Amsteel has a breaking strain of about 10 000 kg. I don't think anyone uses anything smaller.
Does anyone use Amsteel/Dyneema as thick as 10mm when kitesurfing? :?:
Yeah, 5/16" or 3/8" is the standard for slider ropes around here. 7.9 and 9.5mm or so. 12,300lb and 17,600lb respectively. I think I use the 3/8" but it's been a while since I bought any.

User avatar
rynhardt
Very Frequent Poster
Posts: 545
Joined: Wed Sep 11, 2013 3:51 pm
Kiting since: 2010
Local Beach: Leeupan
Favorite Beaches: Langebaan
Style: Freeride
Gear: GK vSonic 6 & 11
Cloud C2 17
Progeni Mutare
Xelerator door
Hoff DD140
Brand Affiliation: None
Location: Johannesburg, South Africa

Re: Don't show us your hook

Postby rynhardt » Wed Jul 12, 2017 10:37 pm

Starsky wrote:
Wed Jul 12, 2017 7:52 pm
1/4" amsteel has a breaking load around 7700 lbs. That is pretty much the thinnest anyone is using for a slider rope.
:thumb:
Even if you derate that down to 3500 lbs (say the rope is significantly worn), that still gives you a safety factor of 17.5 :o if you weigh 200 lbs.
I believe a safety factor of 5 is considered adequate (at least for industrial climbing equipment) to take shock loading into account as well..

User avatar
Starsky
Very Frequent Poster
Posts: 4302
Joined: Mon Apr 19, 2004 12:12 pm
Kiting since: 0
Brand Affiliation: None
Location: Ontario

Re: Don't show us your hook

Postby Starsky » Wed Jul 12, 2017 11:33 pm

Using dyneema in a pivot system instead of a slider you can negate pretty all of the wear factor. Its also nice to get rid of the slop at the bar caused by the slider. Feels to me like all the freedom of movement with a bit more precise bar feel. Nice especially for the light end of the spectrum on foil where being sensitive to over sheeting becomes important.

alford
Frequent Poster
Posts: 222
Joined: Thu Feb 25, 2016 7:53 pm
Kiting since: 2010
Gear: all brands
Brand Affiliation: None

Re: Don't show us your hook

Postby alford » Thu Jul 13, 2017 2:29 am

Anyone know what line diameter BRM uses on their QRs and connection pigtail to spreader bar? Doesn't look like 3/8.

opie
Medium Poster
Posts: 92
Joined: Sat Jul 23, 2016 2:30 pm
Kiting since: 2016
Local Beach: sherman island
Style: foiling
Gear: Ketos Fr2, Fr2XL Cloudkites, Pansh A15 15m
Brand Affiliation: None

Re: Don't show us your hook

Postby opie » Thu Jul 13, 2017 5:25 am

I don't know what size they use, but I was barely able to get 3/16 dyneema from West Marine through the little pin in the QR. I used 4mm marlow dyneema rope and that fit more easily. The 3/16 did work in the release once it settled in, but they were too thick for running through the bar. If they were crossed where the splice makes them thicker they would get stuck in the center hole.
Seems like there is no reason not to make the connection pigtail as thick as you want.

iriejohn
Very Frequent Poster
Posts: 602
Joined: Fri Dec 18, 2015 11:04 pm
Kiting since: 0
Local Beach: West Sussex
Gear: this 'n that
Brand Affiliation: None
Location: South coast, UK

Re: Don't show us your hook

Postby iriejohn » Thu Jul 13, 2017 6:39 am

Starsky wrote:
Wed Jul 12, 2017 7:52 pm
1/4" amsteel has a breaking load around 7700 lbs. That is pretty much the thinnest anyone is using for a slider rope.
I have a Dynabar which works perfectly with 5mm Dyneema which (iirc) is also the size it originally came with - minimum breaking load is over 2,000kg (~4,400lb). 5mm is ~20mm2 compared with 1/4' which is ~32mm2.

User avatar
Starsky
Very Frequent Poster
Posts: 4302
Joined: Mon Apr 19, 2004 12:12 pm
Kiting since: 0
Brand Affiliation: None
Location: Ontario

Re: Don't show us your hook

Postby Starsky » Thu Jul 13, 2017 2:16 pm

Its well and truly settled. Dyneema is strong stuff.

Anyone else have opinions on Slider vs Pivot? After using both long enough to really get used to them, I think getting rid of the lever arm that is the standard hook is really the big gain. I'm also in a rigid shell harness now, which definitely has the least slide/rotation of any harness I've had so far, but going from hook to pivot on the same harness is night and day in terms of easy hip rotation. I definitely prefer the sheeting precision on the pivot. I could get used to the bit of sheeting slop with a slider, but when using strutless kites that are really sheeting sensitive, I like them better on a pivot. On my strutted delta kites the slider worked, and felt just fine.

I guess what Im saying is that if your using clouds and a slider, try a pivot, you might like it a bit better.

knotwindy
Very Frequent Poster
Posts: 965
Joined: Mon Sep 26, 2011 4:49 am
Kiting since: 2007
Local Beach: baja, gorge
Style: erratic to none
Gear: yes, I use gear
Brand Affiliation: None

Re: Don't show us your hook

Postby knotwindy » Thu Jul 13, 2017 4:49 pm

I have used both as well and I agree, the pivot works much better for me than the slider. Especially when I am riding really lit. The pivot has more depower when on toeside than the slider. The difference is very noticeable.

snowycreek
Rare Poster
Posts: 19
Joined: Mon Aug 09, 2010 5:15 pm
Kiting since: 2008
Local Beach: Sand Bar
Favorite Beaches: Sand Bar
Brand Affiliation: None

Re: Don't show us your hook

Postby snowycreek » Wed Jul 19, 2017 1:19 pm

I use a pivot instad of slider. 5 years now. I tried both and found no advantage to the slider over the pivot. I agree that the big benefit comes from getting rid of the hook and chicken loop. It seems to me that the vast majority of hookless kiters became hookless via a slider set-up and assume that it is the slider that provides the benefits. I'm not saying that a slider won't work just fine but a ring larksheaded to the center of the spreader bar gives all the same benefits without any wear issues.


Return to “Kitesurfing”

Who is online

Users browsing this forum: airfly, Baidu [Spider], Bille, knotwindy, MacroPip and 29 guests

cron