Above 5 knots
Join Date: Jun 2007
Location: East Stroudsburg, PA
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Re: Is there a difference in shape between hank and roller furler sail?
Jeff, as always you have way more experience, and knowledge in these things.
and yes a foil is better than hanks... but a roller furler designed sail will generally be cut high enough with an open enough foot, that it'll furl correctly... this is a requirement for furling, so you loose the deck-sweeper end plate effect. Only a real issue when you are on the lower end of wind speeds for sure. As winds pipe up the open foot will actually help balance the load and make it easier to twist things off as the cars come back.
I still think a roller furler that allows a foil, with a removable drum gives you best of both worlds. Foil for racing sails, that you can put properly cut deck sweepers for the lower end of the range, and add a drum and put a sail cut for furling on it for the 99% of the rest of the time you sail. I'm debating doing this myself. Sadly most of my sails are hank on, so they'll all need converted to tuff luff.
I will make one exception for roller furlers that the drum resides below deck is probably the best of all with very little compromise.
MINI MOO, a 1983 Wavelength 24 - she's a fast cow!