Forums > Stand Up Paddle Foiling

GoFoil GL Unveiling

Reply
Created by Gofoil Australia > 9 months ago, 31 Jul 2019
Clamsmasha
WA, 311 posts
21 Oct 2019 3:58AM
Thumbs Up

Select to expand quote
Clamsmasha said..

Scotty Mac said..
Jeg, Do you have a picture?



It's in the first minute or so of this vid..

www.instagram.com/tv/B3v24J9HhLs/?igshid=nlxpjzd8zrq5






JEG
VIC, 1469 posts
21 Oct 2019 7:57AM
Thumbs Up

yup, I see the current GL tail wing is mounted on top with screws and this new tail with a wing tip is mounted under and it's like GF reverse the pedestal upside down and mounted the new wing tip and screws under. So progressive this foil sport and it's like if you blink you missed out. I hope the current pedestal is compatible with that wingtip and just turn the pedestal upsidedown to accommodate this new wing?
I'm going to the tip and tip toe around it

Scotty Mac
SA, 2048 posts
21 Oct 2019 8:18AM
Thumbs Up

Good find Jeg.

Thatspec
327 posts
21 Oct 2019 11:38AM
Thumbs Up

One thing I've noticed with the pedestal tail is that it seems to breech in turns sooner than the older V tails. Pretty sure it's not the front wing breeching, totally different feel. Took some getting used to though now it's no problem. If this pic is correct having the tail wing on the underside of the pedestal would give back some of that mast length.

Scotty Mac
SA, 2048 posts
21 Oct 2019 2:35PM
Thumbs Up

I assumed the new pedastal tail is designed for downwinding and to be more efficient, not for surfing particularly. No issues with breaching on a downwinder. I still use the old tail for surfing but assume the new tail pictured above is the new tail made for surfing.

JEG
VIC, 1469 posts
22 Oct 2019 9:22AM
Thumbs Up

that's interesting, GF testing out wing tip both top and bottom mounts with pedestal. So now we have a flat tail and soon to be release wing tip. Just hope the pedestal is compatible with both top and bottom mount and you can also flip the flat tail for top or bottom mount. I'm no aero geek but what is the deal with these wing tail of flat compared to wing tip?

Thatspec
327 posts
22 Oct 2019 12:43PM
Thumbs Up

en.wikipedia.org/wiki/Wingtip_device

In short, reduces drag created by wingtip vortices.
Almost all winglets on airplane wings point up, i.e. in the same direction as the convex side of the airfoil. Interestingly these point in the opposite direction, also pointing up but the convex side is on the bottom of the tail wing. At the speeds we're travelling I'm skeptical.

In general I like the flat tail wing better than the Maliko tail which tended to dance around through chop. The flat tail wing actually tracks better (I have the wide version, haven't tried the narrow). I'd certainly try the winglet version but would like to see those winglets pointing downwards.

The most interesting thing about that pic is where the mast is mounted to the board, this just looks right.

Clamsmasha
WA, 311 posts
22 Oct 2019 4:46PM
Thumbs Up

Select to expand quote
Thatspec said..
en.wikipedia.org/wiki/Wingtip_device

In short, reduces drag created by wingtip vortices.
Almost all winglets on airplane wings point up, i.e. in the same direction as the convex side of the airfoil. Interestingly these point in the opposite direction, also pointing up but the convex side is on the bottom of the tail wing. At the speeds we're travelling I'm skeptical.

In general I like the flat tail wing better than the Maliko tail which tended to dance around through chop. The flat tail wing actually tracks better (I have the wide version, haven't tried the narrow). I'd certainly try the winglet version but would like to see those winglets pointing downwards.

The most interesting thing about that pic is where the mast is mounted to the board, this just looks right.


They probably just put them on for a bit of yaw control..the stab looks pretty short, so it might add a nicer locked feel for the surf.



JEG
VIC, 1469 posts
23 Oct 2019 9:33AM
Thumbs Up

looking at it closer, we might need to buy also another pedestal for the coming wing tip tail. I see almost every brand now has wingtip, either flat with wing-tip or bend with a wingtip.

JEG
VIC, 1469 posts
18 Nov 2019 9:27AM
Thumbs Up

whatt....more coming and I hope more tail options and maybe a new mast/fuselage, maybe tapered carbon mast etc, you blink you missed

JEG
VIC, 1469 posts
25 Nov 2019 2:39PM
Thumbs Up

I get it, it's not you, its me and I'm going to keep my kai for now but I need real evidence of this setup in action because its hard to tell from this vid. Stop it GL140 I don't need you to whip me around a roundhouse

www.instagram.com/p/B5QZYqJHUZl/?igshid=10nkwlpl6i2s6

juandesooka
615 posts
26 Nov 2019 12:03AM
Thumbs Up

Wing tips...a friend in the biz says they are added for safety rather than performance. Eg if you fall on a sharp tipped high aspect wing it might be like a samurai sword through your guts. He was referring to slingshot with this comment but may apply to gofoil too? Especially with their marketing of no sharp edges, no metal, rounded carbon for safest out there etc

frenchfoiler
498 posts
26 Nov 2019 2:52PM
Thumbs Up

Select to expand quote
JEG said..
I get it, it's not you, its me and I'm going to keep my kai for now but I need real evidence of this setup in action because its hard to tell from this vid. Stop it GL140 I don't need you to whip me around a roundhouse

www.instagram.com/p/B5QZYqJHUZl/?igshid=10nkwlpl6i2s6


Anyone has the size area of the GL : It would interesting to compare GL140, 180, 210, 240 to Axis 900, 1000 and Unifoil/Signature 175, 190, 210, 250

Camarillo
365 posts
26 Nov 2019 3:57PM
Thumbs Up

Select to expand quote
frenchfoiler said..

Anyone has the size area of the GL : It would interesting to compare GL140, 180, 210, 240 to Axis 900, 1000 and Unifoil/Signature 175, 190, 210, 250



From: docs.google.com/spreadsheets/d/17xbTGEWSVeRhnYb_4vz_Gmby8UnrDys7Q1iB-6rC6F4/edit?usp=sharing
The actual surface is used to calculate aspect ratio






mattllew
70 posts
26 Nov 2019 6:25PM
Thumbs Up

Select to expand quote
frenchfoiler said..

JEG said..
I get it, it's not you, its me and I'm going to keep my kai for now but I need real evidence of this setup in action because its hard to tell from this vid. Stop it GL140 I don't need you to whip me around a roundhouse

www.instagram.com/p/B5QZYqJHUZl/?igshid=10nkwlpl6i2s6



Anyone has the size area of the GL : It would interesting to compare GL140, 180, 210, 240 to Axis 900, 1000 and Unifoil/Signature 175, 190, 210, 250


all I know is (thanks to Piros measuring the gofoil GLs) that the signature/unifoil 210 is nigh on identical in terms of width and chord to the GoFoil GL180.... not the GL210 as the names might suggest.

Beasho
240 posts
26 Nov 2019 10:56PM
Thumbs Up

Select to expand quote
JEG said..
Beasho, what's your approx distance from tutle 1ts bolt to mid front footstrap?

they all look tasty and willl take both pohaku
I might oneday get the 140


21.5 Inches from FRONT Tuttle Bolt to Center of Front Strap.

Beasho
240 posts
26 Nov 2019 11:23PM
Thumbs Up

Select to expand quote
Thatspec said..
en.wikipedia.org/wiki/Wingtip_device

In short, reduces drag created by wingtip vortices.




Winglets are a complicated topic. I dusted off my Fundamentals of Flight textbook from Engineering school and found this (below).

Winglets save ~1% on efficiency but allow airplanes to have shorter wings so they DON'T bump into eachother at Airports.
Wikipedia hints at this: "e.g., available width at airport gates"

Not a very sexy reason. And NO reason we should have winglets on our hyrdofoils.

Those tips on the tail are acting like rudders stabilizing YAW. Not sure I want that.



juandesooka
615 posts
26 Nov 2019 11:56PM
Thumbs Up

Select to expand quote
Beasho said..

NO reason we should have winglets on our hyrdofoils.


Not much of a tech guy...my eyes glaze over once the gang gets into the aeronautic tech tech. I could be a caveman luddite but at our speeds, not sure how much of that science applies....wingtips at 500mph vs 10mph may be significant.

But back to my post above....the reason I was told is safety. In a surf wipeout there is a reasonable chance of falling on the wing sideways (if board folds towards you). A sharp wingtip would be like a sword. A turned down tip is less likely to pierce. Could it be as simple as that?

frenchfoiler
498 posts
27 Nov 2019 1:45AM
Thumbs Up

Select to expand quote
Camarillo said..

frenchfoiler said..


Anyone has the size area of the GL : It would interesting to compare GL140, 180, 210, 240 to Axis 900, 1000 and Unifoil/Signature 175, 190, 210, 250




From: docs.google.com/spreadsheets/d/17xbTGEWSVeRhnYb_4vz_Gmby8UnrDys7Q1iB-6rC6F4/edit?usp=sharing
The actual surface is used to calculate aspect ratio







Thanks, are you sure for the GL ?

Camarillo
365 posts
27 Nov 2019 3:20AM
Thumbs Up

Select to expand quote
frenchfoiler said..

Thanks, are you sure for the GL ?



No but this is all there is , the Gofoil website has not been updated for some years..
And how can the projected surface of the GL210 be bigger then the actual surface?

JEG
VIC, 1469 posts
27 Nov 2019 10:53AM
Thumbs Up

I notice lots of these sites are updated slackers including Gofoil or the funding is not there and it doesn't take that much effort and I could do it in my sleep cmon dudes get your act together or give me a job there

pohaku
NSW, 833 posts
27 Nov 2019 12:16PM
Thumbs Up

Select to expand quote
JEG said..
I notice lots of these sites are updated slackers including Gofoil or the funding is not there and it doesn't take that much effort and I could do it in my sleep cmon dudes get your act together or give me a job there


Hey guys.
There has been a change of ownership of GoFoil in Australia and we are working hard to get everything updated along with fulfill all the current orders. There will be a new GF Aus site shortly with all the updated pics & information you'll need.
cheers Dyl

Gwarn
202 posts
27 Nov 2019 10:16PM
Thumbs Up

At least in my eyes the whole GoFoil naming scheme is just confusing along with the lack of technical measurement. This is why I don't even consider this foil.

Thatspec
327 posts
27 Nov 2019 11:11PM
Thumbs Up

Select to expand quote






Camarillo said..


frenchfoiler said..


Anyone has the size area of the GL : It would interesting to compare GL140, 180, 210, 240 to Axis 900, 1000 and Unifoil/Signature 175, 190, 210, 250




From: docs.google.com/spreadsheets/d/17xbTGEWSVeRhnYb_4vz_Gmby8UnrDys7Q1iB-6rC6F4/edit?usp=sharing
The actual surface is used to calculate aspect ratio








Select to expand quote
Camarillo said..

frenchfoiler said..


Thanks, are you sure for the GL ?




No but this is all there is , the Gofoil website has not been updated for some years..
And how can the projected surface of the GL210 be bigger then the actual surface?





The chord measurement on the Albatross 210 can't be 40.2mm and is probably longer than 140.2mm if the aspect ratio is correct.
There a number of impossible measurements on that chart.

JEG
VIC, 1469 posts
16 Dec 2019 8:18AM
Thumbs Up

what's the weight on the latest 1.5 29.5 mast/fuselage because the gofoil Australian site said 40% lighter?
Also, gofoil Australian you need to add the new gl tail in the menu - foils - gl series
nice move Kite Republic and looking forward to some gofoil demo someday

paul.j
QLD, 3300 posts
16 Dec 2019 8:04AM
Thumbs Up

Select to expand quote
JEG said..
what's the weight on the latest 1.5 29.5 mast/fuselage because the gofoil Australian site said 40% lighter?
Also, gofoil Australian you need to add the new gl tail in the menu - foils - gl series
nice move Kite Republic and looking forward to some gofoil demo someday


Mast is the same weight it always has been so i feel that is a typo.

JEG
VIC, 1469 posts
16 Dec 2019 12:06PM
Thumbs Up

Select to expand quote
paul.j said..

JEG said..
what's the weight on the latest 1.5 29.5 mast/fuselage because the gofoil Australian site said 40% lighter?
Also, gofoil Australian you need to add the new gl tail in the menu - foils - gl series
nice move Kite Republic and looking forward to some gofoil demo someday



Mast is the same weight it always has been so i feel that is a typo.


thanks paul.j

AnyBoard
NSW, 235 posts
16 Dec 2019 6:03PM
Thumbs Up

I own a KAI GL100 and GL140 and would love to know the surface are of all the GL range. GOFOIL should be happy to release this information as it helps when coming from other brands and trying to choose. The website updates still exclude dimensions including the areas.

Am loving the GL140 for prone.

A GL120 would be awesome.

Thatspec
327 posts
16 Dec 2019 3:56PM
Thumbs Up

Select to expand quote
AnyBoard said..
I own a KAI GL100 and GL140 and would love to know the surface are of all the GL range. GOFOIL should be happy to release this information as it helps when coming from other brands and trying to choose. The website updates still exclude dimensions including the areas.

Am loving the GL140 for prone.

A GL120 would be awesome.


A GL 340 would also be nice.

Beasho
240 posts
16 Dec 2019 10:17PM
Thumbs Up

Select to expand quote
JEG said..
what's the weight on the latest 1.5 29.5 mast/fuselage because the gofoil Australian site said 40% lighter?
Also, gofoil Australian you need to add the new gl tail in the menu - foils - gl series
nice move Kite Republic and looking forward to some gofoil demo someday



Nothing like Answering a question with numbers and pictures: Tall Mast Fuselage = 5 lbs, 2 oz. --> 2.3 KG

Total Rig 8 lbs 11 oz --> 3.9 KG. Other parts shown (Kai ~ same as GL Tail).








Subscribe
Reply

Forums > Stand Up Paddle Foiling


"GoFoil GL Unveiling" started by Gofoil Australia