SAIL Question for DW speed

Running down wind ,would a 2 cam sail have as good a top speed as a full race sail ,in a more relaxed fashion ,in short distances ,
,or does nothing really beat a 4 cam sail .?
I am thinking more in the big sizes 8,5 -vs 8,6 ,where a 30 knot is a goal when using this size .

8,5 ezzy lion vs 8.6 SCR simmer .both 2018 .
board 127 Isonic .my weight 95 kgs ,

Agreed, i used to race with 2 cams and when going flat out and getting hit by a gust it would try to pull me up out of my stance more. The 4 cam sails dont do that.

I use Severne Turbos and Overdrives.
I love the Turbos for their ease of use in chop but I don't think the foot of the sail is as big. I find the Overdrives are better for off the wind power for speed runs.

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gavnwend said..
Tardy, stick to cam sails, they fly in all angles.l love being overpowerddd.You must love that new Evo Pryde.

thanks Gav ,wish i had new evo's ,I have simmer 7.0 ,7,8 & 8.6 ,simmer SCR ..not used them much as i take the Easy rig of the cheetah and lion most times ,Just looking to advance my ability of going a bit faster in the next few weeks .

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Tardy said..
Running down wind ,would a 2 cam sail have as good a top speed as a full race sail ,in a more relaxed fashion ,in short distances ,
,or does nothing really beat a 4 cam sail .?
I am thinking more in the big sizes 8,5 -vs 8,6 ,where a 30 knot is a goal when using this size .

8,5 ezzy lion vs 8.6 SCR simmer .both 2018 .
board 127 Isonic .my weight 95 kgs ,

I've got the same Lion version 3 sails, 6.5m, 7.5m & 8.5m. Great all round freeride sails, but they dont have enough twist to be fast deep downwind. To go fast, you have to go at a deep angle. Give them maximum downhaul, and the corresponding outhaul, and they rig flat when compared to a proper 4 cam slalom sail, they have a lot more belly for providing power downwind. There are a few locals who have slalom kit and in gusts they can easily handle it but on the Lions its a bit more of a struggle. I've found when I reach a certain speed in a comfortable windspeed, another 2-3 knots of wind and I only go 1/2 to 1 knot faster for a lot of effort. But my 8.5m is for lightwind sailing and I only use it these days with a 46cm fin and old Exocet S4 125l board from 2004. If the wind picks up I change down to 7.5m & smaller board. The first time I used my 8.5m lion was my fastest, when I used a 41cm fin on a Falcon 125 (2009). Speed was 24.83 knots (average of 5 10 seconds). On an iSonic you should go quite a bit faster than I managed.

I've bought the 2020/2021 versions and they require a bit more downhaul and have more twist, but I havent yet had a session for going fast where enough wind with low tide to provide flat water has happened. I did wonder if I should get slalom sails, but the Lions are so easy to rig and use I didnt bother.
I reckon you will go at least 2 knots faster on your Simmers compared to the Lions, when maxed out. It will be interesting the hear the difference.

The KA Koncept is a proven performer down wind and a good compromise. They have 3 cams (2nd, 3rd & 4th batten), relatively small luff pocket, and lighter than 4 cam race sails.