Is GoFoil the Only Option?

[dns]

Like the title says, I've been researching SUP specific foils and the only available option seems to be the Go Foil. Horue mentions a prototype, but no info is available. Naish has theirs, but availability is zero and there's no way in hell I'm dropping $5k on it because it only comes with its own board. Are there any other options out there?

[PonoBill]

Probably not until GoFoil makes a lot of money and gets knocked off. Their foil would be challenging for most other sports--the foil coefficient has to be huge to give the kind of lift it obviously generates at low speed and a reasonable area. I think it would be pretty nasty with a kite or sail unless you swapped out the front foil. You'd be popping out of the water like a Malolo with an Ono on it's tail.

[blueplanetsurf]

F-one also has a SUP foil available and I'm sure we will see more options soon.  My friend Jeff got the F-one Foil but he says the edges are sharp and it seems dangerous for learning so he is getting a Go Foil to use until he feels confident enough to use the F-one.

http://www.f-onefoil.com/Products/Supfoil-range

[yugi]

^ was just writing that

I think RRD and Gong as well.

[yugi]

Probably better filed in "other foiling ideas"

but this,
http://www.kiteforum.com/viewtopic.php?t=2389889
in standard fin box and a ventral fin box might help a board get up a bit easier for DW planning. Wonder what the downsides are.

[Dwight (DW)]

Pelican

[2Rivers]

F4 Fins
http://f4fins.com/product/suspendisse-vitaesem/

AHD
http://www.ahd-boards.com/product/foil-ahd/

LP Foils
http://www.lpfoils.com/windfoil

[Dwight (DW)]

Windsurf foils are not SUP foils. Buy SUP foil, lower take off speed.

Another SUP foil here.

[yugi]

^ he's the Gong guy (l'ours)

[2Rivers]

Windsurf foils are not SUP foils. Buy SUP foil, lower take off speed.

Can you please explain the difference? Why would a WS foil cause a slower take off? If the wing shape/size and canting is right, wouldn't it work the same?
I know some that are already using the F4 version on their SUPs with no complaint. Knowing them, I'm sure they've done some mods to the wings.

What's even more contradictory is AHD markets their foil as a "do it all" for both WS and SUP, so it's kind of misleading if they do not offer the same performance.

If it's indeed true about the WS foil not being compatible, I'm going to inform some buddies to save their $$$ and just wait for some more SUP specific (marketed) foils to come available. Thanks!

[Beasho]

This just popped up.  Looks like a GoFoil again.

[Dwight (DW)]

Can you please explain the difference?

I met the LP foil designer at Surf Expo and asked him if the windsurf foils would work for SUP. He said not very well. SUP needs a lower aspect foil providing take off at slower speeds.

LP, F4, and Horue windsurf wings are very long high aspect designs.

[PonoBill]

Foil lift for fully submerged foils is governed by three factors: Speed, area, and foil coefficient (which is determined by the foil shape). If you design a foil for kite speed you have to ensure the foil doesn't lift clear of the water at the speed you're pulling it for the weight it carries.

If you build a low aspect foil you can squeeze more area into less width and get more lift. The aspect ratio affects drag substantially, but at low speed it's not that important.

Cant of a foil (angle of attack) isn't really a way to change lift, it's a way to tune the foil's reaction to the amount of power you can apply to it. Low cant is low drag, minimal stall. High cant is high drag, near stall (or stalling). In simple, narrow speed band applications cant it used to adjust the amount of lift produced at a specific speed, but it doesn't change total lift.

[DailyBread Surf Photo]

I shot this yesterday at Kanaha. DK on a GoFoil.

[dns]

^^Wow. Amazing how much glide he maintains even way out in front of the wave with no push. Nice vid.