[Public-List] Genoa Sizes

Tue Jul 20 13:55:19 PDT 2010

 The J ratio is the "luff perpendicular"  or LP divided by J. The LP is
measured from the clew to the luff, perpendicular to the luff. The
A'30's J is 10'5". Lay your sail out and rotate a tape held at the clew
until it's about at right angles to the luff.

-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Jeffrey
Sent: Tuesday, July 20, 2010 2:15 PM
To: Alberg 30 Public List -- open to all
Subject: [Public-List] Genoa Sizes

All this talk about Genoas has me thinking.

I've always thought my genoa was a %110, although I don't know for sure.
The clew does extend back beyond the mast, but the leech comes up just
shy of the spreaders so it appears to be about 110%..sound correct?

Up here in Maine we're in the summer doldrums with many days of light
wind of 5 to 8 knot winds.  I understand there are diminishing returns
on larger sails, but just how much extra performance will I see with a
larger headsail? My current genoa feels fairly heavyweight, I'm guessing
a larger lighter sail will help in light summer winds.

Jeff Fongemie
#116 Seagrass

http://picasaweb.google.com/fongemie
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