With high aspect mains and masthead gennies, it's frequently fast to backwind
as much as 50% of the main before making changes to main or headsail.
My 30 isn't quite as bad as my IOR designed SJ 24, but I've carried a 160 and
full main in 15-20kts with 50% backwinded and the boat was fast without too
much leeway. I found heel angle is more critical, need to keep under 25deg and
keying on a previous post, rudder angle should be between 3-6deg. I think the
old designs (and masthead) can sail off the battens fairly well. And keep the
telltales flying when the wind blows.
Dennis' checklist was a good one.
Ron
Wild Cheri
STL
________________________________
From: johnrmcl <johnr...@aol.com>
To: billb...@sbcglobal.net; cnc-list@cnc-list.com
Sent: Tuesday, October 8, 2013 10:20 AM
Subject: Re: Stus-List How to limit backwinding the main
With genny cars back and hard trimmed to weather you will have a bubble in the
main.
John McLaughlin
"FALCON"
Sent from my Galaxy S®III
-------- Original message --------
From: Bill Bina <billb...@sbcglobal.net>
Date: 10/08/2013 9:45 AM (GMT-05:00)
To: cnc-list@cnc-list.com
Subject: Re: Stus-List How to limit backwinding the main
I believe the term you are looking for is "speed bubble" :-)
Bill Bina
On 10/8/2013 9:11 AM, David Knecht wrote:
The discussion of C&C 34 in heavy air reminded me of a problem I had on my 34
and similar issue on my 34+. To me that means I am probably doing something
wrong with sail trim. I find that my mainsail is almost always backwinded by
the genoa. If I leave the traveller on the midline and sheet in the main and
jib as I think is correct, a significant percentage of the main is luffing.
The only solution I have found is to pull the traveller up 6" to a foot, which
does not seem right. I had thought that by moving the genoa tracks aft, I
would open the leech more and that twist would minimize backwinding, but that
does not seem to help much. Both boats had rather old main sails, so possibly
they have just lost their shape. Genoa's are pretty old as well, but a new
genoa on my 34 did not change the problem much. So it seems more likely I am
setting things up incorrectly. Can the group comment on their extent of
backwind and what you do if you
want to limit it so you can maximize power. Thanks- Dave
David Knecht
Aries
1990 C&C 34+
New London, CT
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