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Go Back   SailNet Community > On Board > Gear & Maintenance > Unmanageable Mainsheet
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Thread: Unmanageable Mainsheet Reply to Thread
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Topic Review (Newest First)
04-01-2011 10:36 PM
denby Steve, check this out, he changed his mainsheet.

New dual-speed mainsheet for my boat
04-01-2011 10:04 PM
stpabr Yes I know RXBOT, but sailingdog posts often and I would like an answer from him.
I believe the original poster went with series 57 harken Carbo, similar to what I want
04-01-2011 08:17 PM
RXBOT Steve this thread is over 3 years old, would be nice to know how it worked out 4 the original poster.
04-01-2011 03:31 PM
stpabr
Quote:
Originally Posted by sailingdog View Post
I have a 28' boat, with a 6:1 mainsheet system, and we need every bit of it. How large is the main on your boat? Mine is about 250 sq. ft.
So what series blocks are you using on your mainsheet system?
10-08-2007 10:42 AM
Giulietta
Quote:
Originally Posted by SEMIJim View Post
We decided to go with the Harken 57mm Triple Carbo stuff, as you and I last discussed, Alex. Only I decided to go with the Ratchmatic instead of the manual switch, because the manual switch on that line is actually inside the hole in the middle of the sheaves, requiring you to stick something in there to flip it on/off. Kind of a dumb design, IMHO.

Good choice...I thought I had mention you get the ratchamatic.

Carbo is good I have a lot of stuff on my boat for Harken.

My boat is mixture of brands...but I decided on that.

I will send you email on main control

Good luck
10-08-2007 10:35 AM
SEMIJim
Quote:
Originally Posted by Giulietta View Post
Jim,

what's the deal? Which arrangment did you decide on? Have already tried it?
We decided to go with the Harken 57mm Triple Carbo stuff, as you and I last discussed, Alex. Only I decided to go with the Ratchmatic instead of the manual switch, because the manual switch on that line is actually inside the hole in the middle of the sheaves, requiring you to stick something in there to flip it on/off. Kind of a dumb design, IMHO.

The bottom block was not in stock at the local place or their distributor, and we were told it'd be 7-10 days. Should be in anywhere from today to next Monday, depending on whether it's closer to the seven days or the ten days, and depending on whether they meant only business days. We're sure hoping it's this week, as we've only three weekends left until haul-out , and the next two are race weekends.

But wanted to give the local business our business and their price was competitive with the most aggressive of the 'net prices.

Jim
10-08-2007 10:27 AM
cvanderson 'When you moved the mainsheet forward you changed its leverage on the boom. Halfway up the boom would double the sheet tension, all else equal. A few options:

Get a mainsheet with 8 parts (yours is 4). Sheet tension would be back to normal. Maybe you could get away with 6.

Get a small vang and rig it between your becket and mainsheet. You use your old sheet for gross, low-tension adjustment, and the vang for fine, high-tension adjustment. I think Harken sells a complete system like this, but it must be very expensive. A 2-part vang would double the force on the boom, getting you back to your old sheet tension. A 4-part vang would quadruple the tension, so your sheet tension would be half of what it used to be when it was led to the end of the boom. These systems must be clumsy to use.
10-08-2007 09:43 AM
Giulietta Jim,

what's the deal? Which arrangment did you decide on? Have already tried it?
10-08-2007 09:39 AM
SEMIJim US27inKS,

I think somebody mentioned that in a mainsheet traveler question in the Learning To Sail" sub-forum. I'm not sure. But thanks for the info. I think I'll paste your comments into a "cheat sheet" file I have, that'll I'll occasionally re-print and keep on the boat.

Jim
10-08-2007 12:42 AM
US27inKS Jim,

I realize that I'm more than a few days late to this party, so I hope this hasn't already been covered.

A few pages back you had a question about "conflicting" advice about sail trim using the traveler. One guy says sheet the sail hard and use the traveler to trim. Another says to ease the sheet and trim with the traveler. Both are actually correct, dependant on wind conditions. Sheeting in hard and trimming with the traveler helps me point a little higher in light wind. Setting the traveler to windward and easing the mainsheet puts twist in the sail in stronger winds. A set of teltails on the leach of the main will tell you how much twist you need. The bottom ones are easy, getting the top one to fly takes a little work.

Good luck with your mainsheet.

John
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