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mariachi76 said..Subsonic said..mariachi76 said..duzzi said..mariachi76 said..MartinJerrard said..spridget said..
ive got me a 95 for a while, used it only with ka race 6.3 and 7.1 and i love it when the water is rough. The only thing that i have to get used to is the smaller tail which gives less lift then slalomboards, so underpowered i even used a new carbon model select s1 pro 35 , 35knots 2sec was very easy and was not even fully powered up. Got a s1 high wind 33 for the 6.3, also nice. A shame i cant compare my z-fin and f-hot fins on the fox ;-(
Spridget,
I am the same a MMilhazes but mainly use Fox 95 for 5.0 - 6.2 (NCX and OD) so can I ask if you have sued 5.0 - 6.0 sails and if so what fins work best in open choppy seas. I am 80 kgs and found ISonic 87 jsy to wild for my vintage age and skill in high winds hence fox.
Cheers
Hi Martin Jerrard,
do you use a NCX 5.0 on the Fox? Is it performing well? Which year is the sail? I am about to buy a NCX 5.0 2018 for a good price. Would use it on my fox105 for 24-28kn of wind and would be keen to hear your comment on performance but also how it handles chop and gusty conditions.
best regards
mariachi76
Mariachi, a small sail on a large slalomish oriented board does not work too well. Balance is off, the board become unstable and especially the front acquires a tendency to come up. You need some power to keep the lift generated by the board down. You are better off learning how to handle your biggest sail in strong wind. I am 72 Kg and I am comfortable with 6.5/6.6 race/freerace sails when people are out Freestyling or freestylewaving with 4.7 sails. On my Patrik Slalom 100 the biggest sail I ever used was a 5.8, with my Isonic 111 I go down to 6.5, but it is much happier with a 7.3.
And 24-28 knots of wind is a real lot, if those are real readings it is not really a place for a 105 liter board ... those are river Gorge conditions.
Hello,
As to my understanding of windsurf mechanics, a sail inclined towards the wind also creates a lift force, and a larger sail creates a larger lift force.
i think that our body weight keeps the board down. Am I wrong here?
best regards
mariachi76
The loads on slalom equipment are different to wave gear.
wave gear you tend to get a lot more upright stance/open sail which means theres more front foot pressure. slalom your feet are out on the rail and the sail more closed, which results in more back foot pressure and less front foot pressure. You end up twisting your front foot to keep it in the strap sometimes.
The down force that keeps the nose down comes from the rig. Both its weight and the leverage from the wind hitting the top of the sail. Its Part of why getting downhaul/mast foot position right is so critical. too little downhaul/mast too forward and theres too much board in the water and the nose wants to bury of every wave. Too much downhaul/mast foot back and the nose wants to fly.
sorry, that was a really round about way to tell you you're wrong.

Theres more down force translated from the rig than there is up force. Small sail =less downforce which can be critical for a flighty slalom board.
Thanks for the explanation, makes sense. But back to the original question of a 5.0 NCX sail on the Fox 105L, can't I just put the mast foot some cm more to the front to keep the nose down? Or does a 5.0 really not work well on the Fox 105?
best regards
mariachi76
You do not really use a freerace/race sail in the same way you use a freestyl/wave sail. A freerace/race sail is supposed to be used powered to overpowered and as long as you keep the correct asset it just spills the extra wind and drives you forward. If you do not, then it is a problem because you are suddenly with two extra square meters than you need.
At 72 Kg, VERY VERY far from pro level sailor, I can use my 6.5/6.6 Point-7 ACX/HSM GPS 6.6 when people heavier by 10-20 Kg are on 4.3-4.7. I go down to 5.8 when I see wind conditions where I would use a powered/overpowered 4.7 on my B&J. I never owned anything smaller than a 5.5 race sail, a HSM GPS (3 cams) that I used with my Carbon Art 52 cm wide.
Your Fox 105 at 65 cm wide might work with a 5.0. Actually it will, it will also "work" with a 4.5, but it is a big slalomi-sh board (Severne recommends a sail range of 6.0-7.8) and I doubt it would behave any better with a smaller sail if you are sailing in really maxed out conditions.