Contact   Imprint   Advertising   Guidelines

DIY Arc Speed 5.5 from foilmaker

For all foil kite riders
User avatar
PugetSoundKiter
Medium Poster
Posts: 132
Joined: Sat Feb 20, 2016 5:53 pm
Kiting since: 2009
Style: Wake TT, Strapless Surfboard, Landboard
Gear: Cabrinha, Ocean Rodeo, Slingshot, Naish, North, Pansh, Ozone, HQ, Peter Lynn
Brand Affiliation: None
Has thanked: 12 times
Been thanked: 4 times

Re: DIY Arc Speed 5.5 from foilmaker

Postby PugetSoundKiter » Tue Sep 10, 2019 7:47 pm

Rein de Vries wrote:
Tue Sep 10, 2019 6:31 pm
When i pull the break lines the same effect is achieved i saw, and the kite flies better.
PL Arcs can usually fly with slack rear lines. The stiffer the spars the better, carbon rods are best, aluminum is ok, fiberglass is usually heavy, don't use bamboo (I tried this once and the spar flex alone made the kite clap). Maybe try adding attachments for the rear lines from the end of the spars further towards the leading edge, called flares: http://www.arcusers.net/mx5alan.html.

Before starting skin modifications maybe read this link for some ideas about curing the clap :clap:
http://www.arcusers.net/viewtopic.php?f=4&t=889

foilholio
Very Frequent Poster
Posts: 2794
Joined: Sun Aug 23, 2015 3:20 am
Kiting since: 1337
Local Beach: Ventura Beach
Favorite Beaches: Tarifa
Style: Airstyle
Gear: Foils
Brand Affiliation: None
Has thanked: 120 times
Been thanked: 51 times

Re: DIY Arc Speed 5.5 from foilmaker

Postby foilholio » Wed Sep 11, 2019 12:21 am


That type of tuck won't fix the issue. You need to go across the width of the cell not the cord.

merl
Frequent Poster
Posts: 207
Joined: Tue May 15, 2007 8:43 pm
Kiting since: 2001
Gear: RL kitefoil
Newind split wave

CA Pulsion 12m
FS Peak 4 5m
Gong strutted 9m
Slingshot SST 7m
Gong strutwave 5m
OR Razor 4m
Brand Affiliation: None
Location: West Sweden
Has thanked: 14 times
Been thanked: 3 times

Re: DIY Arc Speed 5.5 from foilmaker

Postby merl » Wed Sep 11, 2019 9:37 am

foilholio wrote:
Wed Sep 11, 2019 12:21 am

That type of tuck won't fix the issue. You need to go across the width of the cell not the cord.
I don't remember seeing the mod to which you are referring, but the topskin tuck as referenced definitely 100% fixed clapping issues in e.g the Guerillas in smaller sizes and was endorsed by vlieger op (the PL company). Now I think about it you used the tuck in the centre for this fix. All I am saying is that it might not be completely useless in this case.

Rein de Vries
Rare Poster
Posts: 12
Joined: Tue Apr 30, 2019 2:42 pm
Kiting since: 1995
Local Beach: Rockanje - The Netherlands
Style: Free ride
Gear: Flysurfer Sonic, Ozone R1, Ocean Rodeo, Manta kite foil.
Brand Affiliation: None
Has thanked: 2 times
Been thanked: 0

Re: DIY Arc Speed 5.5 from foilmaker

Postby Rein de Vries » Wed Sep 11, 2019 10:35 am

Hey! Great inputs, thanks! For clarity,i observed two issues with this kite. Clapping when the inflation was not fully there, but more severely, the kite flaps towards the kiter when flown with some speed. I think by wind from the other side.

Probably both issues are treated seperately. 🤔😀

Rein de Vries
Rare Poster
Posts: 12
Joined: Tue Apr 30, 2019 2:42 pm
Kiting since: 1995
Local Beach: Rockanje - The Netherlands
Style: Free ride
Gear: Flysurfer Sonic, Ozone R1, Ocean Rodeo, Manta kite foil.
Brand Affiliation: None
Has thanked: 2 times
Been thanked: 0

Re: DIY Arc Speed 5.5 from foilmaker

Postby Rein de Vries » Mon Sep 16, 2019 11:07 am

So, to me, Merl's proposed solution is quite clear from the tuck illustration on the cells cord. But foilholios proposal, sounds promising as well. I dont fully understand the contrast with Merls approach. Foilholio, you tuck across the width of the cell, in the center of the cell, effectively taking away cloth from the upperskin cordlenth? In that case i understand the difference.

merl
Frequent Poster
Posts: 207
Joined: Tue May 15, 2007 8:43 pm
Kiting since: 2001
Gear: RL kitefoil
Newind split wave

CA Pulsion 12m
FS Peak 4 5m
Gong strutted 9m
Slingshot SST 7m
Gong strutwave 5m
OR Razor 4m
Brand Affiliation: None
Location: West Sweden
Has thanked: 14 times
Been thanked: 3 times

Re: DIY Arc Speed 5.5 from foilmaker

Postby merl » Mon Sep 16, 2019 11:50 am

Foilholios proposal is new to me but addresses the front collapse problem -... (edit) is it a theoretical mod or has it been tried? The standard tuck I referred to is used to fix "clapping" as well as asymmetric flying.

foilholio
Very Frequent Poster
Posts: 2794
Joined: Sun Aug 23, 2015 3:20 am
Kiting since: 1337
Local Beach: Ventura Beach
Favorite Beaches: Tarifa
Style: Airstyle
Gear: Foils
Brand Affiliation: None
Has thanked: 120 times
Been thanked: 51 times

Re: DIY Arc Speed 5.5 from foilmaker

Postby foilholio » Mon Sep 16, 2019 11:42 pm

My mod has been used by me. I have used it to fix asymmetric flying, but it also affects clapping as you are individually altering the camber shape of cells. I learnt it from Peter Lynn, but his version is a bit different. He takes a diamond from the width of the cell. Given how small I was making my adjustments to the fabric and how I wanted to distribute them that seemed not practical nor right for some reason. I have actually used the TST as mentioned and found it not very effective, after multiple TSTs the problem was never fully or correctly fixed. I would say with ease and confidence my method would have fixed it fully on the kite I had trouble with. Knowing what I know now just looking at the TST I have reason to see it not working well. It makes changes to the width or span of the cell, so will effect the arc. The arc is made more flat which is more unstable. It does however make the the arc change more at the front, which should in theory twist the wing open more increasing the AOA at the tips. But alas in actuality I found it not very good. There is a more simple adjustment that works on the same principle and that is to stretch the fabric on the TE, it does sort of work too but damages the kite and you can rip the fabric.

As to fixing asymmetric flying with my mod of note one side of an asymmetrically flying kite will have a tendency to collapse more than the other side. If you apply my mod to the side that collapses such to the top skin to reduce camber, it will eventually exhibit less tendency to collapse and eventually the same as the other side when then the kite will fly straight. You could apply it to the side that is not collapsing as much on the bottom skin to increase camber and too make it collapse more, this would eventually achieve straight flight now with both sides collapsing more. Why do I bring this up? well for a kite like the Psycho 4 this among as well the bridles controls how much C shape the kite will go when depowered. The PA change is actually a controlled form of tip collapse! I would guess flysurfer discovered this though solving the tip collapse on the Pyscho 3 and also experimenting with ARC style kites. An Arc is highly dependent on the shape of the kite as the OP will be discovering. :-)

Rein de Vries
Rare Poster
Posts: 12
Joined: Tue Apr 30, 2019 2:42 pm
Kiting since: 1995
Local Beach: Rockanje - The Netherlands
Style: Free ride
Gear: Flysurfer Sonic, Ozone R1, Ocean Rodeo, Manta kite foil.
Brand Affiliation: None
Has thanked: 2 times
Been thanked: 0

Re: DIY Arc Speed 5.5 from foilmaker

Postby Rein de Vries » Wed Sep 18, 2019 6:45 pm

Thanks experts! With some dedicated study on what is said I think I know what to do. Keep you posted! 😀


Return to “Foil Kites”

Who is online

Users browsing this forum: No registered users and 2 guests

cron