G'day,
Good point. First off, for a given sail area on a boat without heeling
moment or sail area constraints, a non jib rig is fastest. eg Formula 40
multis, A class cats.

My opinion is that the differences are that the luff of the main is near
enough the same distance from the leech of the headsail all the way up, and
the air off the headsail is constrained in where it can go.

On a schooner rig, the luff of the aft sail is not paralell to the leech of
the foresail, making trimming very difficult, and if there is any
seperation, the air has a chance to become messy in it's flow, thus not
having the same amount of energy to impart as it originally had.

I guess a schooner rig with near rectangular sails mounted very close to
each other, may be the best way to go.

I could be wrong!

Regards,

Rob
----- Original Message -----
From: "Robert" <cateran1949@...>
To: <harryproa@...>
Sent: Monday, September 01, 2003 3:09 PM
Subject: [harryproa] Re: twin masts


> I am curious about the difference between the dirty air from a wing
> sail with minimal standing rigging and the slot from a jib.
> Robert Dalton
>
>
> To unsubscribe from this group, send an email to:
> harryproa-unsubscribe@...
>
>
>
> Your use of Yahoo! Groups is subject to
http://au.docs.yahoo.com/info/terms/
>
>
>