Somebody else will probably give you a more definitive answer, but I've had a 4.7 & a 5.3 north Dr X, they rigged fine on my kilwell matrix 5, which are standard constant curve. If race sails follow suit, that should give you a good choice.

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Originally posted by decrepit

I've had a 4.7 & a 5.3 north Dr X,

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It was the Moreno twins dressed up as nurses in the magazine ad's that sold you wasn't it

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Originally posted by Mark _australia


It was the Moreno twins dressed up as nurses in the magazine ad's that sold you wasn't it

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No they were the best value for money at seabreeze in Rockingham at the time.
Bugs was too busy with yachting stuff and shade sails to make them for me.

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Originally posted by Gestalt

thanks guys. all good help.

the mast i currently rig the 7.5m on is an art speedstick. from what i understand this is actually a rebadged powerex.

So the north sail (2000 model IQ) doesn't get loose at the head. it has the min, med, max indicators but no matter how much downhaul i give it (with a winch) she no floppy.......

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Makes sense. The Fiberspar race masts were very top-stiff few years ago (2-5 yrs ago, dunno about last coupla yrs). You'll downhaul like buggery and still won't get enough twist.

If no North, anything "normal" will suffice. Not NP or Maui Sails. Maybe Severne, Gun, Tush.

You'd have to rig it first to really know.

Hi,iv'e been using North race & slalom sails for about six seasons and tried different masts inc NP Powerex Fiberspar and North.
Undoubtably the North masts work best but Powerex (80%)490 seemed to work nice in the 1998 7.8 IQ and NP CK95 460 in the 6.2 & 7.0 set pretty well also(adjust cams to suit mast diamater), still have a 2000 IQ 7.5 myself and have used it with Fiberspar 490/29 90% but never felt good and didn't set properly,now have North mast .
One of the recent UK mags has a good article on mast and sail compatability,don't have it here a.t.m. but seems though Powerex will work ok in most where as North,NP & Fiberspar etc.are more brand specific.

hi guys,

been in bed for a week with the flu that's goin around. I meant to answer this one earlier but hadn't got the chance.

decrepits on the money about mcs. that's not a measure of bend curve. it's a measure of stiffness. for eg the 7.5 i got specifies a 28-30 imcs mast that is 490 long. so i rig it on a 490 75% carbon imcs 29 mast.

i can say without any doubt it is not the right bend curve for the sail even though the spec is correct. because the leech isn't right. the sail still rigs ok (as mark says it will suffice) but it does feels heavy and doesn't have the twist it needs.

i've seen lots of north sails around that are rigged on lots of masts that aren't north and in my opinion none of them have looked to be rigged correctly. i think it will only work at it's best with a north mast. "bugger!"

will just make do until i can get a Koncept, i know they rig on normal masts like the powerex.

sandiman, i'd be keen on reading the article if you have any links?

Hey Gestalt, I've got that issue of Boards, I give it to you at the swap meet.

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Originally posted by fitz66

Hey Gestalt, I've got that issue of Boards, I give it to you at the swap meet.

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any chance of a scan and email it thru please please please

My scanner died the other day ,looking for a new one at the moment guys