Send Message
Weather | Buy&Sell | Forums |  |
Weather | Buy & Sell | Gallery | Forums | |
Dear Windsurfers,
I manufactured my sixth homemade sail. This time I added an additional wing to this sail. Result is one sail two sizes 4.9 m2 or 5.1 m2. Normal sail size is 4.9 m2 however if you assemble the additional wing to this sail, sail becomes 5.1 m2. An additional wing area is 0.2 m2.
Finally, I don't see any important progress in windsurf sail technology since last 20 years except new sail materials. In my new sail I used three extra battens and slots for this wing. To stop the air flow between main sail and additional wing I used CIRT polyester strips. You can see on the photographs black polyester strips. I haven't tested my new sail yet. In July I will test this sail at Aegean Coast I hope this additional wing won't make any surprise to me.
Bye Melih..
Waste of time, 4.9 to 5.1.
Simple tuning covers more range.
Worse, you kill the main sail using it all the time.
Just like Delta sails.
How the hell is sailquik going to calculate sail twist on that bad boy 
Keep experimenting i say 
Do it on the whole length of the leach so you can choose between a high aspect and a low aspect ratio sail.
forum needs improvement .. the green thumbs-up bar is maxed out and my green thumbs-up isn't reflected :(
This is a old design from the 80s
It has a zipper along the foot between the foot panels.
Does anybody else think that needs more downhaul? Or was that a typical 80s tuning
Hey, why don't you dreamers buy a MW sail to match your FRP fin, Manta nosed board, and Zboom?
Or maybe upgrade your beloved Hypersonic with a reverse pointer fin, extreme mast bend sail, and plastic clamp on harness lines.
Don't forget completing your dream setup with breakaway footstraps and releasable harness bar.
Hello Melih,
Well done on giving this a try and I am sure we are all interested in hearing how it goes. I am interested in the placement of the panel, is it designed to be a method of increasing power and drive? If so perhaps it would work better lower on the sail. Regarding your sail shaping I am assuming by looking at the sail that it has very little or no horizontal shaping and is relying purely on luff round, is that correct?
If so for your Version 2 I would encourage you to add some horizontal seam shaping to the bottom half of the sail to give it some pre-shape, it is rigging very flat.
I love people who are willing to have a go and try stuff out, great to see.
Hi Melih.
I'd like a variable-area sail since I want to do some offshore cruising, but obviously with sails a significant factor is trying to reduce the amount of variation in the vortex wake coming off the leach. A squared outline as in your sail seems likely to create a vortex, like aircraft wing flaps can;
Just to complicate things.
why not have the extra panel longer and hinge. Then with some line connected that could open or pull in the flap.
Sort of use kite lines and a version of a kitesurfing clicker bar.
so flaps could be added on the fly.
sure a similar thing is done by an adjustable outhaul, but the above may be a good idea for smaller sails.
