Ok guys this is my two cents on the wind range.. I don’t really agree with crawf about his low wind ideas but im allowd to because its my dad!
Alright I will start with low wind.
This here is rigged for low wind conditions, it’s a bit hard to see from this ankle but, the sail its got a big foil in it, and has only a short length of the leach what is loose. For this even though the sail specks say something like extensions of 21 to 23 cm;s I still give it a good 24.5 to 25 depending on how much power I need.
Now you get to see what im saying about the leach. The leach on these sails has to be pretty spot on. If its got too much it wont perform as it needs to aswell as too little. You can see by this, that the leach is quite loose until the last batten, but after that it appears to be quite tight again, this is what you want, as the mast flexes it twists so don’t think that it will be an uncontrolled ride it will be nice and smooth.
This photo is trying to show you the foil. To get this you need to tension the first batten a lot and the second but a another 1 to 2 twists. When I say a lot I meen just enough so its not over tensioned and wont pop around to the other tack when sailing, but it needs a fair bit to get it rite you need to bring the batten tensioner out while sailing. Because I didn’t want to play around too much with my battens I left it still a little under done but you can still see what I meen. The photo isnt on the best angle but you can see that the foil is quite visible and deep.
Now this is the most important part. The soft batten…. The soft batten on the sf is designed to act like a clutch for a sail. So when you depower it releases the “gears” or wind strait away, and it springs back once you sheet in again. So when using the SF for light wind, go ahead and ignore the out haul recommendations, and do it buy eye… logically you want the sail to be tensioned but its still a little different from normal sails. if your using a wave boom you want to push down on the sail and it be just touching the boom (but not wrapping around). So in this photo it is perfect.
Now for my weight at 67kg that sail does me from 13 knots to around 17 while rigged on that ( and ofcoarse it has to be a larger volume board)
But for mid wind what I call 16knotts to 19knotts, i use it like this
The leach is really loose down to mid way between the top 2 batten, but loose to just bellow the 2nd batten. This is perfect for most conditions I use this sail in. so this gives it more control.
This photo shows there is now more tension on the out haul, this is done by the extra 5mm of downhaul but after that you also would want to give it another 5mm out haul to get it like this. So the soft batten isnt touching the boom at all but if you where to move around half way across the sail the sail is still touching the boom (but only just) this is where the power comes from.
Now you see that the foil isnt so in your face any more I have let it out by around 2.5 twists, but its all depends on your sailing style how many you do it buy. Ok the foil isnt hidden but its pretty close to it, don’t think that this wont give me power. Because the soft batten fills out while your sailing it it makes a nice foil in there and a lot of controllable power comes in.
Ok now for high wind, for me on this 5.3 I wouldn’t really use it for high wind but for heavier sailers this is how you do it, (or how I do it on the 4.5)
leave it rigged exactly as above. And release the bottom 2 battens until the batten just turns flat…
bad angle but to explain, if you where to hold the sail up rite, and look dead into the mast, the lower half of the sail is competly hidden by the mast. This is when the sail is nice and spongy….
Now if its still to over powerd, give it a bit more out haul and a bit more downhaul, just until the leach is about 15 cms looser. But that is it. No more.
Ok im tired now so I hope it makes sence, and Im sure some one will find something rong with it, but just let me know. And I will try fix it……