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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