Hi guys,
i need some advice for a new wing; i am sailing in light wind conditions (10-15kts) with my slingshot wizard 114 and a 5,8 duotone f type sail; the slingshot hover glide f wind with the 76 wing is a bit small if the wind dies;
would you recommend a infinity 84 or 99 (170 lbs) for my setup and weight?

thanks
juergen

Cyvrwoody and cyber have analyzed and charted the sail size, sailor weight, wind speed on i84 vs i76 here:
www.seabreeze.com.au/forums/Windsurfing/Foiling/SS-Infinity-Wings-Knots-Sail

There is data in there on i99 but mostly for heavier sailors than you

Fwiw: am 185ish lb, sail mostly in light and gusting lake winds, Exocet RF91 board.
8knots gusting to 15: i99 with 7.0 Foil glide
10 gusting 20: i99 or i84 with 5.2 Duotone Idol
In the rare 13 gusting to more than 20, will take out i84 or gamma 68 and 5.2 sail.

I've sailed both the i76 and i99, and I don't think that you'd gain much with i99 at your weight. I'm 2kg lighter than you are, and I've found that the i99 buys you about 2 - 3kts on the bottom end. It comes at the cost of speed, as it's noticeably slower. Going slower does make things easier (such as gybing), but you'll probably get bored pretty quickly.

The main variable is whether you're willing to pump/how good your pumping technique is. I've definitely improved my low end with better pumping, but it takes a lot of practice out on the water.

In 15kts of wind, you should find that your combo of weight, board, sail, and i76 foil should be pretty easy to foil with little to no pumping. Of course the wind speeds that people quote on Seabreeze are usually subjective.

A less comprised approach would be to swap your slingshot i76 foil for a high aspect foil. I've found that getting going on a Fanatic Flow 1000 is easier than the i76. About the same wind speed required, but you don't need to pump as much, because the foil accelerates faster (less drag).

the i84 should be enough for you, will be a good all around wing.

DC

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Juergen said..
Hi guys,
i need some advice for a new wing; i am sailing in light wind conditions (10-15kts) with my slingshot wizard 114 and a 5,8 duotone f type sail; the slingshot hover glide f wind with the 76 wing is a bit small if the wind dies;
would you recommend a infinity 84 or 99 (170 lbs) for my setup and weight?

thanks
juergen

At your weight the 84 should be plenty (I have the 84 and I weigh 165 pounds). I know you didn't ask for, but what about bigger sail instead?

Hello ,

last year I did some test with I84 and I76 with different board and sail, you can find the report here:
www.seabreeze.com.au/forums/Windsurfing/Foiling/Wing-size-based-on-rider-weight?page=2#2609843
have you try to move the wing forward With The track to do an equivalent C position of my test?

I have i76 and i99. Since losing 11 kg (now 78kg) and getting used to using bigger sails - up to 8m foil specific - I havent had reason to use the i99 even at 10 knot average. When I was heavier the i99 made all the difference in light conditions though.

Big foil specific cambered sails are a revelation. I have recently been using a GA Air ride 7.7 (2 cams) and a Challenger foil race 8m (4 cams). The stability and apparent wind you generate in nothing is remarkable. I know lots of people think i76 doesnt work with big sails, and it doesnt if you leave the mast where it is with small sails, but put it in Position C (assuming B works for you on small sails), and its great. They are a huge pain to uphaul though, but fortunately thats a fairly rare thing for me to do in light winds. Not sure what the biggest sail that would work on your board is though.

I will give the i99 a go sooner or later in light conditions with a smaller sail (6.5, 5.7) and see how that works, but I cant imagine gaining much. The key thing you get with i76 and a bigger sail is higher speed, and this carries you through lulls - whereas the i99 has more drag (and more lift) so you cant get the top speed so high, but whilst ever you are moving forward you have some lift. The i99 will literally keep you up until the board is almost stationary, but it will become almost stationary sooner due to the drag and lower top speed.

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Smidgeuk said..
I have i76 and i99. Since losing 11 kg (now 78kg) and getting used to using bigger sails - up to 8m foil specific - I havent had reason to use the i99 even at 10 knot average. When I was heavier the i99 made all the difference in light conditions though.

Big foil specific cambered sails are a revelation. I have recently been using a GA Air ride 7.7 (2 cams) and a Challenger foil race 8m (4 cams). The stability and apparent wind you generate in nothing is remarkable. I know lots of people think i76 doesnt work with big sails, and it doesnt if you leave the mast where it is with small sails, but put it in Position C (assuming B works for you on small sails), and its great. They are a huge pain to uphaul though, but fortunately thats a fairly rare thing for me to do in light winds. Not sure what the biggest sail that would work on your board is though.

I will give the i99 a go sooner or later in light conditions with a smaller sail (6.5, 5.7) and see how that works, but I cant imagine gaining much. The key thing you get with i76 and a bigger sail is higher speed, and this carries you through lulls - whereas the i99 has more drag (and more lift) so you cant get the top speed so high, but whilst ever you are moving forward you have some lift. The i99 will literally keep you up until the board is almost stationary, but it will become almost stationary sooner due to the drag and lower top speed.

With the i99 and my hybrid board (blast), I tried it recently and the lift of the i99 was too far back for me to really get anywhere through the jibe in the C position. I can also get the i76 going in much lighter wind than I used to, because I lost weight as well (95kkg > 85kg or less). It just takes pumping. With a foil specific board like he has, the pumping may not be as hard as the Blast, because there's more volume in the rear.

The i99 feels very slow compared to the i76 or the starboard race foils. I'm just keeping it around for when I get a wing, because with a 5m or 6m wing I'm pretty sure I could get it flying in very little wind.

For his purposes, it may be good to just get out there and see if he can really extend his light wind pumping. It takes a while (did for me, and I've still got a ways to go).

thanks guys for all the good answers!
my biggest sail that works on the wizard 114 is this 5,8 dutone f type. i think the pumping technique is really crucial and there is plenty of training lessons for me to be done
to get flying earlier in the low wind lake conditions i am foiling i am considering the i84 and maybe the i99 too.. i don't mind going slower with my foil board, but the next key step for me is the foiling jibe, which is quite tricky with the i76 and this narrow board (66cm).

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Juergen said..
Hi guys,
i need some advice for a new wing; i am sailing in light wind conditions (10-15kts) with my slingshot wizard 114 and a 5,8 duotone f type sail; the slingshot hover glide f wind with the 76 wing is a bit small if the wind dies;
would you recommend a infinity 84 or 99 (170 lbs) for my setup and weight?

thanks
juergen

I am 175 pounds, and the 5.8 is my go too sail for those winds you mentioned with the i84 on my 130L SS Dialer board. I very much love the i84 wing. It's plenty fast and very stable. This is my second season foiling and I'm not at all tired of it's performance. It still tics all the boxes. I use to use my 6.8 sail on light winds, but I don't use it anymore. It's just too big. So I use the 5.8 which is just perfect.

Honestly at your weight going with a bigger foil is probably a mistake. Even 30lbs heavier the I76 feels about right for a biggest wing unless specifically looking to ride slow swells downwind.

I'd look at technique and how you have that sail rigged.

I am 185lbs and my low wind setup is an i84 with a 7.3 on a Wizard 125, starting at roughly 11-12 knots. The I84 does it all for me I will wingfoil it in 30+ knots on a small board. I am not fast, but, love pumping through lulls on the 84, yes I pump the foil when sailing with the 7.3. I have not felt the need to add a i76 or i99 to further complicated things.

At 200 pounds, I use a i76 with a Exocet 132 foilboard and 5.0, 6.0, and 7.0 sails. In Florida. This covers winds from 12 kts to about 22 kts. No need for anything else.