Hi all--trying to understand Slingshot stabilizers and mounting across windfoiling and wingfoiling.....

When I got my Slingshot Fwind foil a couple of years ago it included the 42 stabilizer, long switch fuse, and blue front wing. I mostly use the i76 front wing now, and occasionally the 84 and 99, all in B position with the stab on top of the fuse, winglets up. I measured the stock stab angle of attack at -3.5 degrees, and I have shimmed the front up slightly with a bread bag tab which calms the tendency of the i76 to climb at higher speeds.

My brother-in-law is getting into winging and recently got a Wizard 115 with the FWing foil. It includes the 48 stab, i99, and Shift Fuse (A and B positions only). I helped him put it together the first time and of course we did not read the instructions. We placed the stab on top of the fuse with the winglets up, as it would be on the FWind. When he got pulled behind a jet ski to get a feel for the foil he had a hard time flying at low speeds. The instructor lent him a Fanatic setup and he did much better. We later read the instructions, looked at the photos, and learned we were supposed to place the 48 stab on the bottom of the fuse with the winglets down. He hasn't had a chance to try the new setup, but I imagine he will have better luck with that.

Do the FWind and FWing foils have different stab holders with different angles of attack? Does positioning the stab with winglets up vs. down change the angle of attack--or is the foil chord symmetrical? And if the Fwing stab is designed to be on the bottom of the fuse, then we really made a big mistake by placing it on top of the fuse. By my reasoning the angle of attack was way off and that's why he couldn't take off. If I moved my stab from the top of my fuse to the bottom, it could change the angle of attack from -3.5 degrees to +3.5 degrees!l So this is why I'm thinking that maybe Slingshot has designed the stabilizer holders to be unique to each application (FWind vs. FWing).

Thanks for your ideas.

Marc

Yes 48 goes on the bottom and 42 goes on the top.

The 48 is meant to be used on short fuse.

Also many people ride i84 and i99 in C position

I use the 42 with I76 & 48 with I99

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thedoor said..
Yes 48 goes on the bottom and 42 goes on the top.

The 48 is meant to be used on short fuse.

Also many people ride i84 and i99 in C position

Friend and I started foiling last season. This spring he decided on the i99 and 48 stab after watching me progress more rapidly when I switched to the i84. Still was really struggling. I'm 30 kg lighter, but riding almost 40L smaller board. One day after a session where I was popping up on the foil using a 4.5M sail and him struggling using a 7.0M sail I notice something. Stab on the wrong side. I run the i84 in the C position. It still feels too far back. Even if I wanted to. The i99 would probably be incompatible with the current deep tuttle only board. Hindsight. Would now only consider a board with twin slot vs. deep tut only. Having both options would be even better.

I think big guys can get away with the large stabilizer on the long fuse, but I found it much harder to get the foil to lift with the large stabilizer.

Once you are up though, with the 48 on the long fuse, the stall speed was a bit lower.

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OldGuy3 said..

thedoor said..
Yes 48 goes on the bottom and 42 goes on the top.

The 48 is meant to be used on short fuse.

Also many people ride i84 and i99 in C position

Friend and I started foiling last season. This spring he decided on the i99 and 48 stab after watching me progress more rapidly when I switched to the i84. Still was really struggling. I'm 30 kg lighter, but riding almost 40L smaller board. One day after a session where I was popping up on the foil using a 4.5M sail and him struggling using a 7.0M sail I notice something. Stab on the wrong side. I run the i84 in the C position. It still feels too far back. Even if I wanted to. The i99 would probably be incompatible with the current deep tuttle only board. Hindsight. Would now only consider a board with twin slot vs. deep tut only. Having both options would be even better.

I used the i99 on my Fanatic Falcon Lightwind for a summer. Worked fine for me, then I switched to a Levitator 160 and now a 150.