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Re: DIY Foil Kites

Posted: Fri Jun 23, 2017 8:40 pm
by revhed
stefmoris wrote:
Wed Jun 21, 2017 8:26 pm
This was a light wind session on my 15. I reached a max speed of 28.21 knots, upwind vmg 43º @ 16 knots, downwind 131º around 26 knots.
RESPECT, BRAVO! :thumb: :D
R H

Re: DIY Foil Kites

Posted: Fri Jun 23, 2017 9:00 pm
by Mossy 757
stefmoris wrote:
Wed Jun 21, 2017 8:26 pm
Hi all, here is a long overdue video of a recent session. I’m still dialing in the mixer to get a good combination of stability and performance, but I’m happy with the results thus far. I’ll produce a more polished video at the end of the summer.

This was a light wind session on my 15. I reached a max speed of 28.21 knots, upwind vmg 43º @ 16 knots, downwind 131º around 26 knots.

I’ve attached the gpx file incase anyone more capable than I wants to check it and correct me if I’m wrong.
Looks good, now you just need to upgrade to a better foil/board combination and you'll be all set! :lol:

Re: DIY Foil Kites

Posted: Fri Jun 23, 2017 10:54 pm
by Peert
Looks great that Video. The kite obviously handles well and is very very beautifull also from a distance. The see through effect is nicely used.. :thumb: :thumb: :thumb:

Re: DIY Foil Kites

Posted: Sat Jun 24, 2017 8:44 am
by mgs
Hello Stef.
Super impressed with what you have achieved, your detailed documented account with images and precision needed is outstanding.
I have been making bridles, pigtails ETC for a number of years but have never considered taking on a project like this.
The time and effort that you have put into this is inspirational.

Re: DIY Foil Kites

Posted: Sun Jun 25, 2017 10:11 pm
by stefmoris
Thanks everyone! Still tweaking the bridles a bit. I want to try to improve downwind and low end as well.

Re: DIY Foil Kites

Posted: Tue Jul 11, 2017 7:26 pm
by Peert
Image

Inspiring speeds you report there in the 50+ topic. :naughty: :D

Re: DIY Foil Kites

Posted: Fri Jul 14, 2017 3:07 pm
by stefmoris
Thanks Peert! Slowly but surely I'll get the downwind too. I'm already thinking about future tweaks and changes but still need the rest of the summer to get as much learning in as I can. -stef

Re: DIY Foil Kites

Posted: Mon Oct 09, 2017 5:00 pm
by stefmoris


Hi all, here is a short film wrapping up my summer with my 3rd generation of home made foil kites. I hope you enjoy watching it as much as I enjoy making the kites!


The kites are a big improvement from my last generation. I’ve gone faster with better angles than ever before on my hydrofoil (30.7 knots top speed), upwind at 41º/17 knots VMG, and down at 136º/24 knots VMG. The structure is much more solid with less jellyfishing, the construction and material a lot more durable, and the kite has nice pressurization with very little water ingress.

I am blending from one profile in the center, to another on the tips. While the tips are nice and stable, unfortunately the center is not (as Kitexpert and Foilhollio had pointed out) as stable as I would have liked.
So in tuning to get things nice and stable I had to give up some power and downwind performance.

I even did a few races this summer and had a lot of fun. I came in dead last but I completed the courses in the time alotted, and even had some great starts! I still can’t tack or gybe, probably because I spend too much time trimming and tweaking my kites!!!!

I’m already working on the design for the 4th generation and will continue to use Chikara as it seems to be super durable. I made a wallet last december and as you can see although it is worn, it has not torn or come undone!
I hope these DIY threads inspire others to make their own kites and if so, post your progress!! :) -stef

Image

Re: DIY Foil Kites

Posted: Tue Oct 10, 2017 11:14 am
by kitexpert
Thank you very much stef for your videos and work! If they are not inspirational for DIY kite people I don't know what is :thumb:

Your kites look good. You must have done many things just right to counter that challenging starting point, high AR kite with relatively low cell count.

What I've found out during the years is less tuning your kite needs the better it is. If you have to correct some problems by adjusting bridle/speedsystem you lose something, usually flying speed/upwind and also depower. Of course you can say they even not existed, if stability of the kite wasn't good enough.

Looking forward how your 4th generation kites will be. Chikara is indeed a good material and it is nice to work with. Best success in your work :thumb:

Re: DIY Foil Kites

Posted: Tue Oct 10, 2017 11:32 am
by socommk23
stefmoris wrote:
Mon Oct 09, 2017 5:00 pm


Hi all, here is a short film wrapping up my summer with my 3rd generation of home made foil kites. I hope you enjoy watching it as much as I enjoy making the kites!


The kites are a big improvement from my last generation. I’ve gone faster with better angles than ever before on my hydrofoil (30.7 knots top speed), upwind at 41º/17 knots VMG, and down at 136º/24 knots VMG. The structure is much more solid with less jellyfishing, the construction and material a lot more durable, and the kite has nice pressurization with very little water ingress.

I am blending from one profile in the center, to another on the tips. While the tips are nice and stable, unfortunately the center is not (as Kitexpert and Foilhollio had pointed out) as stable as I would have liked.
So in tuning to get things nice and stable I had to give up some power and downwind performance.

I even did a few races this summer and had a lot of fun. I came in dead last but I completed the courses in the time alotted, and even had some great starts! I still can’t tack or gybe, probably because I spend too much time trimming and tweaking my kites!!!!

I’m already working on the design for the 4th generation and will continue to use Chikara as it seems to be super durable. I made a wallet last december and as you can see although it is worn, it has not torn or come undone!
I hope these DIY threads inspire others to make their own kites and if so, post your progress!! :) -stef

Image
Great video. Awesome looking kite.
But......
Can we see more of the kite please ;)