Join Date: May 2007
Location: Stuart FL
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My mainsheet currently uses a dock cleat to secure it. It seems kind of scary to me to use something like that for a sheet so I am looking at replacing it with a rope clutch. I will need to move the winch and possibly the sheave. Also planning to move the main halyard back to a second clutch so its not on the mast. I have a pretty good plan for doing all of that.
I am wondering about the size of line for the mainsheet? I have looked for some kind of sizing chart but they are all based on boat size which seems like you would end up with a line that may be off. My traveler is about in the middle of the boom so I am guessing the boom will be generating more leverage on the sheet than if it was toward the end of the boom. Or is it just a rule of thumb and if the sheet breaks you get a stronger line next time?
I was just going to replace the line with a similer diameter but I had Mack sails out to replace my main halyard and they said it was oversized(was 7/16 replaced with 3/8) and replaced it with a smaller diameter line. The larger line is easier to hold onto but harder to keep tidy. Always a trade off but I would rather only have to buy the rope clutch once. The current mainsheet is 1/2 inch.
If I could replace the 1/2 inch mainsheet with 3/8 or 7/16 then I can get a single double clutch. 7/16 can get up to 6100 lbs in strength while 1/2 inch is 8700 lbs. The current line on the mainsheet is very old and has not broken yet. I don't know what kind it is but it is ready to be retired.
Anyway long post for a simple question about how strong of line I need for a 30' sailboats mainsheet.
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30' Islander Bahama