I don't know why you think you are doing something wrong, unless it is just because it is not pretty. My experience, and the advice I've been given, is that there is always some backwinding of the main in the sweet spot if you using a genoa and working to weather. I am sure that the exact degree must depend on the design of the boat and the sails, but for IOR boats with Dacron sails it is certainly true. My boat seems to work best with up to a quarter of the main backwinded when the waves pick up, but I make no claim that my sails are optimal.
Steve Thomas C&C27 MKIII -----Original Message----- From: CnC-List [mailto:cnc-list-boun...@cnc-list.com]On Behalf Of David Knecht Sent: Tuesday, October 08, 2013 9:12 AM To: CnC CnC discussion list Subject: Stus-List How to limit backwinding the main 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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