Contact   Imprint   Advertising   Guidelines

Wing sizes for kite/surf/SUP

A forum dedicated to Hydrofoil riders


Blackrat
Frequent Poster
Posts: 253
Joined: Thu Mar 12, 2015 4:55 pm
Kiting since: 2002
Local Beach: Jeffreys Bay , South Africa
Gear: old
Brand Affiliation: None
Location: Jeffreys Bay South Africa

Re: Wing sizes for kite/surf/SUP

Postby Blackrat » Fri Feb 02, 2018 7:06 pm

I'd double check that ..... 2800cm2 ? You sure ?

ronnie
Very Frequent Poster
Posts: 3770
Joined: Sun Jul 24, 2005 6:39 pm

Re: Wing sizes for kite/surf/SUP

Postby ronnie » Sat Feb 03, 2018 11:16 am

Blackrat wrote:
Fri Feb 02, 2018 7:06 pm
I'd double check that ..... 2800cm2 ? You sure ?

BWD
Very Frequent Poster
Posts: 3327
Joined: Thu Jun 05, 2003 3:37 am

Re: Wing sizes for kite/surf/SUP

Postby BWD » Sat Feb 03, 2018 6:03 pm

280 inches^2=1806.4 cm^2

opie
Medium Poster
Posts: 174
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, 12m
Brand Affiliation: None

Re: Wing sizes for kite/surf/SUP

Postby opie » Sat Feb 03, 2018 7:59 pm

I called them and asked. They said the numbers represent cm2 with one zero dropped, so 2800 cm2. When you see one in person its huge.

Blackrat
Frequent Poster
Posts: 253
Joined: Thu Mar 12, 2015 4:55 pm
Kiting since: 2002
Local Beach: Jeffreys Bay , South Africa
Gear: old
Brand Affiliation: None
Location: Jeffreys Bay South Africa

Re: Wing sizes for kite/surf/SUP

Postby Blackrat » Sat Feb 03, 2018 8:01 pm

Called who ?

I find it strange that an American company would resort to using the metric scale ?

And that must be the surface area of the top and bottom of the wing ?

User avatar
Peter_Frank
Very Frequent Poster
Posts: 8566
Joined: Wed Oct 16, 2002 1:00 am
Kiting since: 0
Brand Affiliation: None
Location: Denmark

Re: Wing sizes for kite/surf/SUP

Postby Peter_Frank » Sat Feb 03, 2018 8:16 pm

BWD wrote:
Sat Feb 03, 2018 6:03 pm
280 inches^2=1806.4 cm^2

That is what one could think at first indeed BWD.

But no, I am pretty sure it IS 2000 and 2800 cm2, looking (calculating) at the wings and outline, compared to the 31.5 and 42 inch spans :D

As the GoFoil "Kai 120" and "Nalu 90" is 1200 and 900 cm2 (and would never be as small as 774 and 581 cm2 if it was square inch)

So it IS really 2000 and 2800 cm2 most likely, or at least what they aim for, incredible.

Must say the downwinder on the huge wing on a SUP looks really fun :thumb:

Useless with a kite IMO, but on a SUP when not turning much, amazing !

Some americans use metric measures and tools, just like Naish uses a metric allen key for their fins (where others like Future fins and their allen keys are imperial).

8) PF

BWD
Very Frequent Poster
Posts: 3327
Joined: Thu Jun 05, 2003 3:37 am

Re: Wing sizes for kite/surf/SUP

Postby BWD » Sat Feb 03, 2018 9:01 pm

Wow :o that’s big

stevez
Medium Poster
Posts: 143
Joined: Wed Jan 13, 2016 11:17 am
Kiting since: 2008
Gear: Moses hydrofoil
BRM cloud
Brand Affiliation: None

Re: Wing sizes for kite/surf/SUP

Postby stevez » Sat Feb 03, 2018 10:10 pm

Those numbers don't agree with my personal calcs.
I have a gofoil kai, it's 62 x 23cm.
With the wing shape as it is, I'd estimate projected area to be a little less than 62 x 23 x π / 4, so probably around 1000 - 1050cm2, definitely well less than 1200.
I don't know how to measure it accurately.
So the 120, 160 etc don't make sense except maybe relative to each other.

User avatar
Peter_Frank
Very Frequent Poster
Posts: 8566
Joined: Wed Oct 16, 2002 1:00 am
Kiting since: 0
Brand Affiliation: None
Location: Denmark

Re: Wing sizes for kite/surf/SUP

Postby Peter_Frank » Sat Feb 03, 2018 10:30 pm

stevez wrote:
Sat Feb 03, 2018 10:10 pm
Those numbers don't agree with my personal calcs.
I have a gofoil kai, it's 62 x 23cm.
With the wing shape as it is, I'd estimate projected area to be a little less than 62 x 23 x π / 4, so probably around 1000 - 1050cm2, definitely well less than 1200.
I don't know how to measure it accurately.
So the 120, 160 etc don't make sense except maybe relative to each other.

Agree, the numbers seem to be too high somehow ?

Taking the video wing outlines, combined with span measured very accurately and measuring the approximate area, I get the 200 to be in the neighbourhood of 1800-1850 cm2 and the 280 to be around 2300-2400 cm2 even when curved so adding a percentage.

But it is not square inch either, as they are 645 % more, so seems like a miscalculation yes, somewhat off the nominal value.

About 10-20 % off, both the 120 and 200 and 280 is my estimate - still not that far off, but I would not be proud of the measuring.....

GoFoil.jpg
8) PF

stevez
Medium Poster
Posts: 143
Joined: Wed Jan 13, 2016 11:17 am
Kiting since: 2008
Gear: Moses hydrofoil
BRM cloud
Brand Affiliation: None

Re: Wing sizes for kite/surf/SUP

Postby stevez » Sun Feb 04, 2018 12:35 am

Agree, that sounds much more like it :thumb:


Return to “Hydrofoil”

Who is online

Users browsing this forum: No registered users and 11 guests