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Forum: Multihull Sailboats

01-02-2016, 10:33

Replies: 48

New extreme roach flat top main?

Views: 6,809

Posted By davecalvert

Re: New extreme roach flat top main?

Yes, increase in main sheet tension reduces twist.
A lot of cruisers do not use enough main sheet tension, especially when sailing upwind.

Forum: Multihull Sailboats

01-02-2016, 09:13

Replies: 48

New extreme roach flat top main?

Views: 6,809

Posted By davecalvert

Re: New extreme roach flat top main?

It is true that one of the benefits of a square top main is the twist in the upper part of the sail. This does release pressure in the top, moving the power and center of effort down in the puffs. We...

Forum: Multihull Sailboats

28-01-2016, 08:21

Replies: 48

New extreme roach flat top main?

Views: 6,809

Posted By davecalvert

Re: New extreme roach flat top main?

Of the current main doesn't have much roach the increase with a wide square top can be quite a bit. On racing mains, we use head widths around 40% to 50% of the foot length. On performance cruisers...

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