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Adjustable stabilizer settings on Naish Thrust foil
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d0uglass



Joined: 28 May 2004
Posts: 1285
Location: Bonita Springs, Florida

PostPosted: Sat Apr 16, 2022 1:09 pm    Post subject: Adjustable stabilizer settings on Naish Thrust foil Reply with quote

I picked up a freebie 2019 Naish Thrust foil that I'm going to give to a buddy who is just now thinking about learning to foil. One difference between the Naish and the slingshot foil that I'm used to is the rear stabilizer on the Naish is adjustable in angle. I want to make sure I understand the stabilizer angle theory correctly and know a good starting setting for it. The foil will be going in the tuttle box of a starboard carve. I tried putting it in the deep tuttle box on my old formula board and it fit and the screws reached (barely), but the flange wasn't quite flush with the bottom of my board even when it was in tight, and I didn't feel like trying it that way. Hopefully it's a snugger fit in buddy's carve.

Anyway,

I THINK angling the rear stabilizer up pushes the nose down and helps prevent overfoiling at speed, but probably makes it harder to get foiling.

I THINK angling the rear stabilizer down pushes the nose up and make it foil earlier in light winds, but could make it harder to prevent overfoiling.

I THINK a neutral position (stabilizer angle indicator aligned the indicator notch in the fuselage?) would be a good position to try for starters.

Thoughts or experiences with this foil?

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dllee



Joined: 03 Jul 2009
Posts: 5193
Location: East Bay

PostPosted: Sat Apr 16, 2022 1:41 pm    Post subject: Reply with quote

2 years, or 150 days in.....
Stab angle set to push nose of the board UP.
That means to push stabilizer DOWN, to lift nose of board.
Setting is just under 1mm.
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dllee



Joined: 03 Jul 2009
Posts: 5193
Location: East Bay

PostPosted: Sat Apr 16, 2022 1:45 pm    Post subject: Reply with quote

Windfoil, you spent 95% of the time, when foiling straight, with your weight mostly on FRONT foot...to keep nose down.
Ideally, once up, you can place your backfoot almost directly behind your front foot, and be balanced in a straight line.
That allows jibing from just behind the front strap for easy pivot foot switch.
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coachg



Joined: 10 Sep 2000
Posts: 3290

PostPosted: Sat Apr 16, 2022 8:22 pm    Post subject: Reply with quote

Douglass,

You have it correct. I sailed the 2018 Naish Foil-same as the 2019-for two years before I traded it out for a 2020. For a beginner in light winds set it in neutral & only angle it down if they have sailed it for a while & are struggling to fly.

Coachg
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dllee



Joined: 03 Jul 2009
Posts: 5193
Location: East Bay

PostPosted: Sun Apr 17, 2022 12:54 pm    Post subject: Reply with quote

Seems I and lots of other foilers advocate slight down lift all the time.
Neutral is very unstable....up and down.
Opposing forces with front foot weight is needed for stability.
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coachg



Joined: 10 Sep 2000
Posts: 3290

PostPosted: Sun Apr 17, 2022 3:29 pm    Post subject: Reply with quote

Neutral position on the Naish foil-lining up the yellow lines-is not technically neutral. But then you should already know that.

Coachg
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dllee



Joined: 03 Jul 2009
Posts: 5193
Location: East Bay

PostPosted: Sun Apr 17, 2022 6:54 pm    Post subject: Reply with quote

I normally go max down on stab, maybe 2mm on the lines.

Then if it's windy, get it to 1mm, never lines aligned. Too unstable, meaning up and down in a heartbeat.
One of the better Naish guys here, Carl, at 140 lbs and max down stab, and he uses i76 for all winds, decent size sails too.
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coachg



Joined: 10 Sep 2000
Posts: 3290

PostPosted: Sun Apr 17, 2022 10:41 pm    Post subject: Reply with quote

I rode the 2018 Thrust for two years with the lines aligned 80% of the time & it was very stable; but then Lake Washington is much lighter wind than Berkeley. Most of my foiling is done in wind under 15 mph. Over 15 & I'm windsurfing. On the days where the wind picked up above 14 when I was foiling is the only time I trimmed down the rear stabilizer 1-2 mm.

If you are still riding the older foil you might want to upgrade. The 2020 is much lighter, has the longer fuse for better stability, jibes better & is much faster. You lose a little early lift with the loss of area in the front foil, but not much.

Coachg
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dllee



Joined: 03 Jul 2009
Posts: 5193
Location: East Bay

PostPosted: Mon Apr 18, 2022 1:51 pm    Post subject: Reply with quote

I don't like to blame equipment for MY lack of skills.
Switched to 600 2 years ago, bought 1150 last winter with 79 fuze, 310, 270, 210 stabs.
Used original 1220 a month ago. Excellent pitch stability, good enough speed, and nice jibes.
If I were to show off my skills, any one of my 3 foils would be fine.
Just bought 2140 to learn winging.
Rode 2001 Starboard Carve 90 with '21 Super Session couple days ago. Fast, great jibes, please don't blame equipment.
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coachg



Joined: 10 Sep 2000
Posts: 3290

PostPosted: Mon Apr 18, 2022 3:09 pm    Post subject: Reply with quote

Blaming equipment? Hmm, I'll pause while you re-read my post. I'm pretty sure I typed it in English.

Coachg
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