These guys are quick to respond and very forthcoming with info on mast curve unlike my current most loved Australian windsurf brand
with that said, I think these are very specific and not a good match with most other brands but I'm all for having more CST/Slake built masts

This puts it in the flex top ball park and means simmer should work well.
15, so at the very top of constant curve bordering flex top.
MAST CURVES
0-6 = Hard top
7-9 = Hard Top/Constant Curve
10-12 = Constant Curve
13-15 =Constant Curve/Flex top
16-18 = Flex Top
19-21 = Flex Top/Super Flex Top
22+ = Super Flex Top
I dont get all the angry ill informed commentary.
The sails look sick and the shape looks insanely good. Really happy to see north back.
Being negative is all that some people can Madge.
Talking of masts, they (he said the top model?) are made in Australia according to this shop's video. About 8 minutes in.
Talking of masts, they (he said the top model?) are made in Australia according to this shop's video. About 8 minutes in.
Yes, correct.
Except the Skinny Pro produced in Europe, the Ultimate (RDM) and the Optima (MDM) are produced in one of the finest carbon factory in Australia, one of the few that uses filament winding techniques, this give us the possibility to change the flex of the mast without decreasing the size of the side-walls.
Reducing the side wall equals in a reduced strength in the flexier part of the mast.. yeah that same section that breaks most of the times...
One of the advantage of filament winding is that masts are much stronger due to the consistent wall thickness along the whole length of the mast.
.the Ultimate (RDM) and the Optima (MDM) are produced in one of the finest carbon factory in Australia, one of the few that uses filament winding techniques.
the pictures i've seen of the Ultimate do have the same tell-tale weave of the Slake/CST Composites masts; i suspect this is the factory of which you speak?
... this give us the possibility to change the flex .
What exactly is your role in North Sails windsurfing?
Are you actually employed by the North Sails company in the core development team? What is your title? Or just an importer for what business and in what region?
Sorry if missed earlier if you posted the answer.