Mark is correct, but sailing is a very analog thing. Sail up or down being digital but how much tension is a very finesse kind of thing. You can also fight the age of a sail when trying to set the luff tension, if it has a shrunken bolt rope.
Generally speaking skippers tend to over tighten. This is especially true if you are in choppy conditions. In a choppy sea you need to trim the boat to accelerate back up to speed rather than for the higher speed. There's a link for a sail tuning guide on the group website that is very useful. Phil Agur <http://www.catalina27.org/public_pages/profile270.htm> s/v Wing Tip C270 LE #184 MMSI 366901790 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ChefYaz Sent: Thursday, October 22, 2009 11:06 AM To: [email protected] Subject: RE: [IC27A] Re: I told you I had more...Difficult to raise the Main Raise it as high as possible. Tension it enough to remove any horizontal wrinkles but not so much as to create any vertical wrinkles. Tensioning the sail will alter the "airfoil" shape so it can be "tuned" for different wind conditions Mark, Gratis (6115) NOLA From: ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com [mailto:ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com] On Behalf Of PeterE Sent: Thursday, October 22, 2009 11:20 AM To: ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com Subject: [IC27A] Re: I told you I had more...Difficult to raise the Main Thanks for the tips about cleaning & lubricating the mast slot. On a related topic, please help me answer this longstanding question: How high/tight to raise the sail? That is, what indicators can I use to gauge whether I've raised the main to the appropriate hight? Thanks! Pete 1986 TR --- In ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com <mailto:IC27A%40yahoogroups.com> , "Joe McCary" <j...@...> wrote: > > I doubt the different tension on the port/starboard shrouds would make a big > difference in raising the main. Have you sighted up the slot to see if the > line is straight or not? If the upper shrouds are equal and the lower > shrouds are different (port/starboard) or vise versa, the slot will show > bend up the mast, BUT I bet this will be from the spreaders and even then > not much. > > > > More likely you need to lube the slot. I suggest some marine dry lube spray. > I apply it to my sail slugs so they drag the lube to the top as you hoist > the sail. > > > > > > > > Joe McCary > > Aeolus II. #4795, West River, MD > > www.aeoluswestriver.net > > joe at photoresponse dot com > > > > From: ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com <mailto:IC27A%40yahoogroups.com> [mailto:ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com <mailto:IC27A%40yahoogroups.com> ] On Behalf Of > mlong9876 > Sent: Thursday, October 22, 2009 1:09 AM > To: ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com <mailto:IC27A%40yahoogroups.com> > Subject: [IC27A] I told you I had more...Difficult to raise the Main > > > > > > > Does anyone else have difficulty raising the main after a certain point? It > seems to be much more difficult raising my main after about the halfway > point. When the surveyor surveyed the boat, he noticed that there was more > tension on the starboard side shrouds and recommended tightening or > loosening the turnbuckles on one of the sides to make them even. I'm > wondering if this lack of symmetry that's preventing the mast from being > perfectly straight might have something to do with the resistance I feel > when hoisting the Main or if it something totally different. I tried using > sailkote several times, but felt the same resistance. > > Any thoughts or suggestions (other than telling me to get a new hobby that > doesn't have me up my boat's butt every 5 seconds and looking for forum > help) would be appreciated. > > Neverendingly yours, > > Michael > > > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 4530 (20091021) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset. <http://www.eset.com> com > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
