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mr love said..
I just used a 6.7 NCX in Paros.........I am not one to bag brands and everybody has different likes and dislikes but for me I did not like the sail. II felt 8it had very average bottom end for my weight and did pull from the front a lot. Retuned it numerous times but we just did not get along....
Mr love I know you're an all round windsurf design guru (I use some of your stuff)
How does the ncx compare in feel to sails you would normally use?
What's your take on how no cam freerace sails should feel?
Onto the general thread topic of forward pull / early planing:
I personally have 2020 ncxs in 6.5 /5.5.
That sudden clunky forward pull you all describe is certainly real, and is the queue for me to lean back, bare away significantly and jump in the straps. Add 1 back hand pump and Within 2 seconds I'm planing away and the pull is gone. The sail has inflated and accelerates hard while going very light. I'm planing as early as anyone.
I always assumed this to be pretty normal for a no cam with 7 battens and race geometry. It goes from flat, to inflated then it shoots forward and settles into stability as the apparent wind builds.
Same thing happens kind of in reverse in the gybes. It goes neutral back to flat really easily if you stay sheeted in. On the exit that reinflate comes just as you need the juice to stay planing.
I tried a point 7 that's also racey and the same thing happened. But I noticed a 6 batten more freeride duotone (or the bigger 6 batten severne gator) was alot more progressive. cammed sails are already pre inflated, so they don't have this problem.
I can also fully understand why that forward pull surge of power isn't a good thing, especially in gusty marginal planing conditions. But if you use it like a temporary push it can be to your advantage.
On the wind range, i still use an ncx a full meter smaller than a race sail for the same wind. Ncx is very stable, but certainly not not Race sail stable in the top end.
16-22kts for the 6.5
20-26kts for the 5.5. 77 kgs.
I can imagine that temporary forward pull would be terrible if I was 90 kgs trying to hang onto the 6.5 in 28 knots.