Standup Zone Forum
The Foil Zone => Foil SUP => Topic started by: supunk on January 13, 2020, 06:45:49 AM
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Anyone got any experience with the GL140 wing? Looking for a wing to complement my GL210 that I can use for SUP and prone foiling. Which is the best option a GL140 or 180? Thanks for any info :)
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I have the GL210 and thinking about getting the GL140 next as I think it will complement my setup. I know someone has the GL180 and GL140 (does SUP & Prone) and he thinks that getting the GL140 is a good move. As you know or may not know the GL210 and GL180 has the same wing span except the cord is less than on the GL180.
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Hi JEG. Yes was aware that the wingspan of GL180 and 210 were the same. That was the main reason for considering the 140. There have been several good videos on instagram of guys sup foiling on the 140. Interested to find out how much lift it has?
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Do we know the surface area ? It usually gives an idea of the lift it's got.
From the videos I have seen, looks like the GL140 is hard to pump back out on a sup but works on prone (once again it depends on skills and size of the rider).
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For what it is worth, I have been listening to the Progression Project Podcast interview with Dave Kalama and he spends a bit of time talking about the GL140. Seems like it is his goto for surfing now. May be worth a listen but seems like a good quiver addition to a 180 or 210.
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Thanks 805. Will have a listen :)
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yeah, that's what hear and seen but I reckon it depends on your weight and ability. Its really hard if you can't try these wings before you buy.
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What tail are folks liking with the GL140? Seems small for SUP, but I'm thinking about it for the sessions where a steep drop is necessary
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some are using kai but the majority I have seen are on the new GL tail and my local dude here is on the narrow version and ripping.
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Just listened to Dave Kalama on this podcast.
He makes a very compelling case for the GL 140. He says he never feels underwinged with this foil. I was worried it would be too small a wing but Dave Kalama claims it does EVERYTHING.
I suspect he weighs ~ 200 lbs. If it works for him then it should work for the rest of us:
https://soundcloud.com/progressionproject/foiling-series-dave-kalam-part-2-technical-foiling
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yeah, the GL140 might be my next purchase or wait an see what GF has future plans.
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Yes! Dave did say he rides a 5'0 and has his foot on the trailing edge of the mast at 190 lbs but well worth the adjustment in style for the benefits. He also said the 180 is his goto downwind.
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Yes! Dave did say he rides a 5'0 and has his foot on the trailing edge of the mast at 190 lbs but well worth the adjustment in style for the benefits. He also said the 180 is his goto downwind.
Did someone say "Angledfoil"? How about the foot behind the mast completely? ;D
(https://i.imgur.com/epYbX6r.gif)
https://www.instagram.com/p/B1-nS_Kn0UT/?utm_source=ig_web_copy_link
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Rub it in - do a spinner for a finish.
and, Hell, just when you think there is some sort of standard - somebody moves the marks?! Why does 'nuts-over-mast' work?
Jim
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Yes! Dave did say he rides a 5'0 and has his foot on the trailing edge of the mast at 190 lbs but well worth the adjustment in style for the benefits. He also said the 180 is his goto downwind.
Ahh... I should have separated the comments. At his weight and on the 5'0, Dave indicated his back foot is at the trailing edge of the mast, whereas Austin's is further forward. Moving to the GL140 required a bit of a different technique versus other wings that creates more lift early but well worth the adjustment in style for the benefits...
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Rub it in - do a spinner for a finish.
and, Hell, just when you think there is some sort of standard - somebody moves the marks?! Why does 'nuts-over-mast' work?
Jim
Sumpin', sumpin' about center of axis, center of mass, center of rotation, and moving pivot points...sumpthin' like that. IDK? :-\ :)
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You are all like An Evil Bot Meme.
I Just ordered my GL140. I will give a full review.
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I have been riding the GL210 since September. LOVE IT! I surf it in everything from 3 feet to 12 feet+.
I was NOT convinced I needed anything else until I listened to the progression project and both Dave Kalama and James Casey were raving about surfing the GL140.
I am worried it might be too small but take stock in their opinions.
For the record the GL210 has done things that other wings couldn't. There is a spot called Phlegm Balls. It sits 200 to 300 yards outside of mushroom rock 1/2 way to the Mavericks bowl. It breaks on lower tides or when the waves are just shy of Mavericks'able.
I have been trying to sneak into the seam and catch a wave past Mushroom Rock. This was a 500 yard ride, caught 200 yards outside of mushroom. I was able to get in on an 8 to 10 foot face and fly the fading flats past mushroom. No one else has done this on a foil. Last year I was trying on the GoFoil IWA but the waves were too fast for the wing. I would make the drop but then lose the wave. The GL210 allowed me to 1) Get up early 2) Move to the shoulder 3) Connect through the fading flats to the inside. Its like downwinding with no wind.
This looks small but it wasn't. I have been luring Jeff Clark and Haley Fiske out to the same spot. More to come.
https://www.youtube.com/watch?v=BuKfRtbWQVw
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Alex was out yesterday on some mushy harbor waves with a wing that looked ridiculously tiny. I don't know what it was. I can't find the video on Youtube, just MyFace
https://www.facebook.com/Gofoils/videos/506628826943069/
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Alex was out yesterday on some mushy harbor waves with a wing that looked ridiculously tiny. I don't know what it was. I can't find the video on Youtube, just MyFace
If this is the same one that was posted to Facebook, it said that Alex was testing a new longer mast and smaller front wing. My read was that it was a prototype smaller than the 140 but I could be wrong...
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You are all like An Evil Bot Meme.
I Just ordered my GL140. I will give a full review.
Nice move Beasho and I’m thinking of the same wing size and let us know what you think?
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Alex was out yesterday on some mushy harbor waves with a wing that looked ridiculously tiny. I don't know what it was. I can't find the video on Youtube, just MyFace
If this is the same one that was posted to Facebook, it said that Alex was testing a new longer mast and smaller front wing. My read was that it was a prototype smaller than the 140 but I could be wrong...
I’m happy with my 29.5 mast with plate adapter ~32 and looks like GF has a few mast options coming out and tails. Interesting to see Alex testing an even smaller wing than GL140, maybe but it looks like he’s got a lot of lift and maybe the wing design/shape has something to do with it, we shall see?
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Eddie Ogata was trying a prototype GL120 a week or so ago. He liked it.
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Looking forward to your review Beasho as I am considering this wing for prone and SUP especially after listening to DK on the Progression Project. :)
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This was apparently ridden on a GL140.
The end game! Until the next foil comes out 3 months from now :o
https://youtu.be/BNcDhH-5xlE
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They seem super versatile :)
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They seem super versatile :)
Yes.
The GL210 was super versatile. These were the waves we were catching last week. Here is Haley paddling for a wave. He is 6’2”. This is the stuff from the video above. Catching on a much bigger wing.
He weighs 230+ was riding the Iwa with a retro 9’ 6” board. I was on my big wave 7’ 4”.
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@Ponobill: Thanks--that sounds right. One of the kids in a video from the Go Foil event mentioned the 120 and I wasn't sure if I heard it right.
@Beasho: Will look forward to your review of the 140. Love the 180!
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Geez, youze guys are ruining my kids' inheritance... ;D
So the candyman showed up at the beach today to delivery a friend's new GL180 and 18W; but wouldn't you know it, there was a screw up in the order, and somehow the 18W got confused for a GL140 - and apparently it was the last 140 the distributor had for another 4-5 months - so it's now residing in my van waiting for the next decent day for her maid voyage. :o
(https://i.imgur.com/NkPwHdE.jpg?1)
So that's two new wings in a week...hope the wife doesn't read this forum. :D
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Drool! Well the question is whether the wife could tell the two apart if they weren't side by side... ;) Does Go Foil use a US distributor? I always figured they had a two-tier system...
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One of the advantages of blue paint--it's not wife-proof if they're into the stuff themselves, but otherwise...
A friend of mine had a collection of Little Brtish Cars (LBC). Whenever he bought another it went straight to the painter to be painted Primrose, which oddly enough is a pale yellow. He kept his cars in a purpose-built barn parked in a chevron pattern, and when he added another it went to the back. He claimed she never knew that his collection went from 6 to 12. I suspect she did from the timing of her trips to San Francisco to buy expensive clothing. She had a weakness for really formal-looking stuff with lots of gold trim. She often looked like a navy admiral at the strangest times--like during lunch at their house. I had to suppress the urge to salute. But I digress.
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Hi Sano. You have a great collection. Would be very interested to hear what the wingspan and chord are on the 140? Cheers :)
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One of the advantages of blue paint--it's not wife-proof if they're into the stuff themselves, but otherwise...
A friend of mine had a collection of Little Brtish Cars (LBC). Whenever he bought another it went straight to the painter to be painted Primrose, which oddly enough is a pale yellow. He kept his cars in a purpose-built barn parked in a chevron pattern, and when he added another it went to the back. He claimed she never knew that his collection went from 6 to 12. I suspect she did from the timing of her trips to San Francisco to buy expensive clothing. She had a weakness for really formal-looking stuff with lots of gold trim. She often looked like a navy admiral at the strangest times--like during lunch at their house. I had to suppress the urge to salute. But I digress.
Kind of Confusing but I think you're saying:
ALL THE FOILS ARE THE SAME BLUE SO THE WIFE WILL NOT KNOW YOU BOUGHT A NEW ONE
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The other thing is to make sure you're home alone when the Fed-Ex guy shows up.
GL140 - Wingspan = 32"the exact same as the GoFoil IWA (RED for those out of the loop).
Chord at Center = 6.5"
Going to test right now.
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Drool! Well the question is whether the wife could tell the two apart if they weren't side by side... ;) Does Go Foil use a US distributor? I always figured they had a two-tier system...
I don't know the specifics, but my first Go Foil set I got directly through talking to Karla, and shipped directly to me from the factory in China. When the GLs came out however long ago, a buddy called Karla again to order a pair of them a couple weeks before leaving for HI, and she directed him to call some guy in CO.
After a couple calls with no response from him, and since he was concerned the shipping window was slipping away, he decided to just go to HI w/o them, and see if he could find some there...which he did at HI-Tech I believe he said was the name of the shop.
When I went looking for the 180, a buddy I foil with owns Kikau Kai Waterman (https://nikaukai.com/collections/foiling) in Hermosa Beach who's a GF dealer, but he has to order through whomever in CO also, and where the communication breakdown happened, and how I ended up with the 140...instead of my other buddy getting his 18W/pedestal. Not complaining though...a bummer for my bud (who's getting his 18W shipped directly to his house), but a "SCORE!" for me. :P
Btw, the wife could tell them apart (note: don't leave new wings sitting next to each other), but I told her the newer one was her valentines day gift to me, and how much I loved her for it....she's a softy romantic, and was thrilled I was so happy with it (thank goodness for holidays and lucky timing ;D).
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The other thing is to make sure you're home alone when the Fed-Ex guy shows up.
GL140 - Wingspan = 32"the exact same as the GoFoil IWA (RED for those out of the loop).
Chord at Center = 6.5"
Going to test right now.
Thanks for the pics Beasho.
The GL140 makes up more span at the wing tip and less at the centre. Technically I have no idea what these changes will do but judging from the vids it rips.
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OK! GL140 Works.
Conditions: Buoys started out 10 ft @ 17 seconds then went 12 @ 14 Seconds. BOOMING!
However Mavericks was NOT breaking so I figured it would be good at Mushroom. It was breaking all over place outside of Mushroom Rock aka BIG just not Mavericks big.
I hug the rock and took off on my first wave ~ 10 foot face. I went so fast I freaked out and jump off the board. I thought the wing was going to breach BUT IT DIDN'T. It was all in my head.
A few more rides, some 300 yarders, and I am convinced this will will carry even at 190 lbs.
Here were a couple of waves but at the end of the session I was a bit wobbly.
https://youtu.be/NHKceG0iH3Y
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One of the advantages of blue paint--it's not wife-proof if they're into the stuff themselves, but otherwise...
A friend of mine had a collection of Little Brtish Cars (LBC). Whenever he bought another it went straight to the painter to be painted Primrose, which oddly enough is a pale yellow. He kept his cars in a purpose-built barn parked in a chevron pattern, and when he added another it went to the back. He claimed she never knew that his collection went from 6 to 12. I suspect she did from the timing of her trips to San Francisco to buy expensive clothing. She had a weakness for really formal-looking stuff with lots of gold trim. She often looked like a navy admiral at the strangest times--like during lunch at their house. I had to suppress the urge to salute. But I digress.
Kind of Confusing but I think you're saying:
ALL THE FOILS ARE THE SAME BLUE SO THE WIFE WILL NOT KNOW YOU BOUGHT A NEW ONE
Yes, that would be a reasonable summary, though it would be better is they were Primrose.
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OK! GL140 Works.
Conditions: Buoys started out 10 ft @ 17 seconds then went 12 @ 14 Seconds. BOOMING!
However Mavericks was NOT breaking so I figured it would be good at Mushroom. It was breaking all over place outside of Mushroom Rock aka BIG just not Mavericks big.
I hug the rock and took off on my first wave ~ 10 foot face. I went so fast I freaked out and jump off the board. I thought the wing was going to breach BUT IT DIDN'T. It was all in my head.
A few more rides, some 300 yarders, and I am convinced this will will carry even at 190 lbs.
Here were a couple of waves but at the end of the session I was a bit wobbly.
https://youtu.be/NHKceG0iH3Y
sounds like a fast front wing and controlling the speed is a learning curve. Would be interesting to see your feedback on the not so beastly waves, like 2-3ft size.
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Im struggling with my GL 210 wing & put it aside till i could find more powerful surf. Do you guys recommend the tall or short mast for the GL wings??
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Im struggling with my GL 210 wing & put it aside till i could find more powerful surf. Do you guys recommend the tall or short mast for the GL wings??
I really like the Go Foil 29" mast in an adapter for an approximate 32" overall length. Now as far a needing "more powerful surf" for the GL210...I'm riding the GL180 in sadly, 2-3' mush at the moment, but having a blast with it.
What I did find, was that I had to move the mast up forwards almost 2" from where I had it with the Iwa, and it's working great...lifting easy on takeoffs, and as controllable and manageable once in flight very much like the Iwa, just a somewhat different in feel that takes a bit of getting used to...which brings me to....
The only slight negative is that the 180 doesn't seem to want to turn as easily as the Iwa. But that too seems to be as much "the archer and not the arrow" right now; as the more time on the water I get with it the more I'm learning just how far I can push it, and that it just responds a little differently than the Iwa coming out of turns that I have to get used to...not so much that it doesn't want to turn....as Derek Hamasaki is a great example that it turns just fine (https://www.youtube.com/watch?v=41FTmYeLEG8) thank you :) ).
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Im struggling with my GL 210 wing & put it aside till i could find more powerful surf. Do you guys recommend the tall or short mast for the GL wings??
I really like the Go Foil 29" mast in an adapter for an approximate 32" overall length. Now as far a needing "more powerful surf" for the GL210...I'm riding the GL180 in sadly, 2-3' mush at the moment, but having a blast with it.
What I did find, was that I had to move the mast up forwards almost 2" from where I had it with the Iwa, and it's working great...lifting easy on takeoffs, and as controllable and manageable once in flight very much like the Iwa, just a somewhat different in feel that takes a bit of getting used to...which brings me to....
The only slight negative is that the 180 doesn't seem to want to turn as easily as the Iwa. But that too seems to be as much "the archer and not the arrow" right now; as the more time on the water I get with it the more I'm learning just how far I can push it, and that it just responds a little differently than the Iwa coming out of turns that I have to get used to...not so much that it doesn't want to turn....as Derek Hamasaki is a great example that it turns just fine (https://www.youtube.com/watch?v=41FTmYeLEG8) thank you :) ).
Im struggling with my GL 210 wing & put it aside till i could find more powerful surf. Do you guys recommend the tall or short mast for the GL wings??
The GL210 does need a bit of juice and I find 1-1.5ft waves sux with no lift what so ever and this were you need the IWA, M200 and M280 according to your weight. These high aspect wings can be tricky to ride on smallest waves if you don't have the experience. The low aspect wings are great when you need more lift but get ready at high speed were it buck you out quicker than you can think. The high aspect wings are great at high speed once you get use to blur speed 8)
Derek is super light weight and have tons of foil skills and he lean over with paddle to turn and if I do that I would fall ;D and he makes HA wings look easy.
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Derek is a really cool dude. He was here on Maui for a few days. I didn't know him by sight, but I was watching some guys foil from the breakwall and I said to the guy next to me--I think it was Chris P.--"that guy foils like Derek Hamasaki".
He said, "That's because it is Derek Hamasaki."
I had a brief conversation with him, but I was nearly incoherent. I didn't know what to say to a guy that foils like that.
But look where his front foot is. My take on the GL, as with the axis high aspect wings, is that wherever you have your front footstrap, it's too far forward. the center of lift is way back.
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My take on the GL, as with the axis high aspect wings, is that wherever you have your front footstrap, it's too far forward. the center of lift is way back.
My experience has been that the center of lift for all the GoFoils has been in the exact same place. I have NOT had to move my front footstrap. Works for the M200, IWA, GL210 and now GL140. In fact I haven't had the inclination to pull my front foot back with the GL140. Rides go 300 yards with my hair on fire no need to pump further.
I have been pushing the GL140 into BIG stuff. When I say big I mean NO ONE ELSE IS DOING THIS. Sure there are pictures of Laird and others foiling 30+ footers but I was taking off yesterday on 15 foot faces with my SUP. The good news is that the GL140 stays DOWN. I was hitting 24 and 26 mph and the foil never breached, not once. Its giving me 3 more feet of confidence.
I was out again today in 20 knots of wind. All alone in 9 to 12 foot surf every ride over 21 mph. Never breached. Never crashed. Unbelievable. So much fun it should be illegal. Yet NO ONE ELSE WAS OUT WITH ME. Other than Kristi on her Kayak with a foil. She eventually said give me your GoPro and I will film.
Looked like this. I am calling this spot "CanonBalls." It was dead high tide. It took a combination of Big Swell and whitecap KICKER to get in.
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Its interesting how there are 2 different points of view on foot placement. I bet it all has to do with the level of wave power.
What size mast are you on Beasho ?
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I’m with Beasho on this PonoBill.
The GL, the Axis 1000, 1010, all ride with the same foot positions as the older wings.
These are faster wings, with higher stall speeds. Ride them as designed, they work the same. Don’t compensate for the higher stall speed by trimming them at stall, with excessive weight back. Easy to fall into that trap, probably, when you’re a heavy dude.
Also, there is no way Alex, or Adrian, would design wings with radically different foot positions. That’s just dumb. Especially with the Tuttle crew.
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Its interesting how there are 2 different points of view on foot placement. I bet it all has to do with the level of wave power.
What size mast are you on Beasho ?
I think it has more to do with how fat we are. I'm the elephant in the room. Where I put my foot determines whether or not I can get up and where I can trim the board flat. Both Basho and DW have more experience and skill than I do, but I know what works for me. My front foot is about two inches further back with a GL (240 or 210) than with the Iwa and M200, and a little less than an inch further back with the 101 vs the 102. I don't currently use foot straps because at my skill level I need to move my front foot too frequently, especially with a wing.
When I switch from GL to Iwa or M200 I'm guaranteed to have a bunch of launches during take off because I have my foot too far back. Likewise, for the GL after some low aspect wing sessions, I have problems lifting off until I get my front foot back where it belongs.
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Its interesting how there are 2 different points of view on foot placement. I bet it all has to do with the level of wave power.
What size mast are you on Beasho ?
I think more has to do with their different board sizes than there being any real difference in the foot placement.
Derek is on a board at least a two feet shorter (4'7" from what I've been told) than from what I remember Beasho saying he rode, and therefore what looks like Derek being further back on his board...is simply that his mast is at the very back of his board much like the prone guys' boards to give the appearance that the front foot is much further back. My bet is that their rear foot placement over the mast and their front foot/strap placement width wise is going to be relatively the same...comparatively to their different leg/stance lengths.
Btw, when I said I moved my mast forward 2", my foot/strap placement never changed. And yes, I agree with Beasho, the GLs don't breech as easily as the others, or at least they'll let you know before they do. However....
I also agree with JEG that...
The GL210 does need a bit of juice and I find 1-1.5ft waves sux with no lift what so ever and this were you need the IWA, M200 and M280 according to your weight. These high aspect wings can be tricky to ride on smallest waves if you don't have the experience. The low aspect wings are great when you need more lift but get ready at high speed were it buck you out quicker than you can think. The high aspect wings are great at high speed once you get use to blur speed 8)
...and that they're not the best wings to learn on. Kind of like learning to drive...you don't jump in the Ferrari and mash the accelerator pedal right away. You start in something a little bit more forgiving, and only climb in the Ferrari once you've learned to accelerate, control, and keep your first vehicle safe through the turns. :)
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The other thing is to make sure you're home alone when the Fed-Ex guy shows up.
GL140 - Wingspan = 32"the exact same as the GoFoil IWA (RED for those out of the loop).
Chord at Center = 6.5"
Going to test right now.
Beasho, what the thickness like with GL140 compare to IWA?
I'm looking forward to what they say about the new wing tip tail as I'm guessing this will improve the yaw stability and bite/drive/turn combine with the current gofoil LA and HA wings.
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For what its worth, I have tactile pads on my deck for foot-placement and can get my feet in exactly the same place everytime. I haven't had to adjust placement at all from cut-tail IWA/M200 to GL210/140. The bigger difference was when I cut the maliko tail down, I had to move my front foot back just a bit - maybe an inch.
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JONDRUMS - You have a GL140? It would be good to hear your perspective.
With regards to the Center of Lift on any wing it is at the 25% Chord location. 100 years ago people DIED because they thought the lift point was at the Center of the Chord a wings ripped off airframes because the spars we BEHIND THE CENTER OF LIFT. Twisting sheared off the wings . . . . eventually they figured it out. Like Bernoulli's its more empirical than intuitive.
Measuring the GL140 vs GL210 it is clear that Alex Aguerra meant to keep the center of lift IN THE EXACT Same spot.
Shown below the leading edge of the wing in 8" from the butt end of the mount position. Moving BACK 25% of the chord length
- 6.5" for the GL140 --> 1.625"
- 7.5" for the GL210 --> 1.875"
The center of LIFT is therefore within 1/4 of an INCH on these two wings aka NO-CHANGE.
The only thing that can effect PITCHING moment is therefore the Rider, the Tail and the Speed of travel. A lot of variables but the center of lift, independent of the tail,
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I’m pretty sure the center of lift is about 25% of the MAC, not just the chord at the center or root of the wing. Think swept wings, which most wings are...high aspect having less sweep vs low aspect foil wings. I do agree that they would try to keep the center of lift in roughly the same location so as to keep the setup ridable without major changes.
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Gaznuts was on my GL210 with his Swing Wing 5m, 20 mph wind. He said he kept his feet in the same position as the regular Go Foil wings.
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Gaznuts was on my GL210 with his Swing Wing 5m, 20 mph wind. He said he kept his feet in the same position as the regular Go Foil wings.
Yep, Paul was kind enough to let me run his gl210 with regular maliko tail. I didn’t change my foot positioning at all. Nice wing with good lift for my 170lbs.
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For you guys running the GL140 - what are you finding is the low end (2' faces???). There is a lot of internet documentation and discussion here to see the top end is more limited by what the rider is willing to do. Just curious on the other side (what conditions are too small).
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yes Beasho, I have the 140. However, I can't make a good review of it yet because I've committed myself to only going out on the prone board until I get good at prone foiling. I'm not yet any good at all, but I am up and flying. The 140 is great, and worked fine even in small mushy waves - very efficient and fast. It does feel quite a bit more loose as compared with the 210 on a SUP, but that could also be the tiny prone board causing that rather than the 140. I haven't had enough time on the prone+210 to make a comparison, so I'm not useful unfortunately.
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yes Beasho, I have the 140. However, I can't make a good review of it yet because I've committed myself to only going out on the prone board until I get good at prone foiling. I'm not yet any good at all, but I am up and flying. The 140 is great, and worked fine even in small mushy waves - very efficient and fast. It does feel quite a bit more loose as compared with the 210 on a SUP, but that could also be the tiny prone board causing that rather than the 140. I haven't had enough time on the prone+210 to make a comparison, so I'm not useful unfortunately.
I'd be using the Kai rear wing with the GL140 on your prone , makes life alot easier gets very Skatey with the flat rear.
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I'd be using the Kai rear wing with the GL140 on your prone , makes life alot easier gets very Skatey with the flat rear.
Was just thinking about this the other day, when I finally got a decent enough swell to throw the 140 on...and also found it to be "skatey" or loosy goosy as I mentioned to a friend who inquired about it.
Good to hear that the Kai tail will firm things up a bit, because while it was a bit of a challenge...I did like the 140's speed, and responsiveness.
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Yeah, skatey is exactly how I would describe it (and not in a good way). I'm in line for the new gofoil tail design. I'll probably keep holding out for that and live with it until then.
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Hi Beasho, Judging by your pics, foiling has been very good to you. Mav's seems like the perfect spot for big and long rides. If you ever get bored and end up with some free time, do me a favor and satisfy my curiosity. Run some masking tape perpendicular to the rear edge(near center of wing) of your GL wings, top and bottom. Send me a picture of top and bottom, as seen from the side. I would like to compare my wing segments with yours. If this makes sense to you, thanks in advance. Happy foiling! Stay well!
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I could do it for you tonight - but I'll be honest I'm not sure quite what you're looking for. Are you trying to figure out the profile of the trailing edge?
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Thanks Jondrums, I've been using the H 105 wing segment profile (Tom Speers, sailing dingy hydrofoil) for my high aspect wings and gotta say, I like it. its fast! I have yet to see a GL wing in person and I think they are probably similar. I was curious about this and even though the masking tape trick does not reveal much, it does indicate a general wing segment shape. Kinda like the perpendicular white stripes on the Armstrong foils. These stripes just help one appreciate the general shape of the foil, top and bottom, nose and trailing edge. Especially when viewed from a side angle.
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hope this helps
(https://i.imgur.com/h1rlRHF.jpg)
(https://i.imgur.com/sX2Y5Wy.jpg)
(https://i.imgur.com/B2tbnVv.jpg)
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Thanks Jondrums! This confirms what I was already thinking. Very similar to a H105 profile with a modified (more blunt) leading edge. Convex top (obviously) and convex bottom. Super sexy and fast. 14-15% thickness to cord ratio( can't tell that by the pictures) . Just trying to wrap my head around the science and art of foil design.
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Aren't all these airfoils well documented?
Here is a NACA website. It would seem that people could identify the most similar profile quickly.
The GL series is pretty fantastic but we are still early in the evolution. So I am confident things will get better in the future even if at a slower clip. There will likely be a split with regards to discipline. Similar to why kitefoils never worked for surfing. They were too knifey and fast for the SLOW conditions we ride in the surf. e.g. really fast surf conditions are 20 to 24 mph. I think these are slower numbers for kitefoilers.
http://airfoiltools.com/airfoil/naca4digit
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Thanks Beasho, Just saw this. I have used this very profile. The largest difference between this profile and the profile of the GL 140 is the topmost point in the upper curve is moved significantly further back in the GL wing versus the NACA 2412. GL series wings use almost a symmetrical portion of a circle versus the typical , more curve forward, design of the NACA series. Does it matter? Who knows and probably not. Look at the Signature wings. Very traditional foil pattern and they seem to rock.
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Thanks Beasho, you gave me a good idea! I just went to airfoil tools and using there NACA 4 digit generator tool I just moved the position of max camber back to 60 instead of 40. Now that's what I needed. looks better.