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skysail 10-03-2013 12:37 PM

Mainsail battens
I noticed that my mainsail curves too much. The leach curves in a lot and it is hard to get the tell tails to fly properly. It is a Doyle stack pack, which is fully battened. I think the problem is... There are no battens in there. There are spaces for 4 battens. Anyone know what kind of battens go in there? Can I buy some kind that I can cut to size? I'm assuming that this will help straighten out the mainsail.

Second question, the bottom of the mainsail opens up when wind goes through at the proper angle. The best example I can think of to explain this is cells in a skydivers parachute.
It can be helped closed somewhat with some Velcro. What is the purpose of this? Is it just to help stiffen up the sail while pointing close into the wind?


Barquito 10-03-2013 06:33 PM

Re: Mainsail battens
If the sail is floppy in the roach (the area outside of a line from the clew to the head), battens will help. If there is too much belly in the sail, you need to tension the halyard and the outhaul. If that doesn't work, maybe the sail is too old and baggy.

skysail 10-03-2013 06:52 PM

Re: Mainsail battens
The sail is fairly new and unused, no more then a few years old. So I guess it's because of the lack of battens. I have adjusted tension just about everywhere and it did help some... Sometimes I get a crease or "gutter" along the roach line. If battens went through I think that should go away and straighten the leach out a bit.

Hudsonian 10-03-2013 07:05 PM

Re: Mainsail battens
Buy the battens at a sail loft.

With regard to your second question, it sounds like you have a loose footed mainsail -- that is, there is no bolt rope fastening the foot of the sail to the boom. Tighten your outhaul until the maximum depth of the sail at the foot is about 15% of the length of the foot. This will the decrease excessive depth. To reduce the excessive depth in the middle of the sail increase mast bend by tightening your backstay. Tightening the halyard tension will pull some of the cloth forward towards the mast thereby reducing depth of the sail but avoid moving the point of maximum draft forward of 45-50% aft.

vtsailguy 10-03-2013 07:39 PM

Re: Mainsail battens
I would think the Velcro is there to hold the batten in. I assume its on the end of the sleeve where the battens should go in.

skysail 10-03-2013 07:50 PM

Re: Mainsail battens

Originally Posted by vtsailguy (Post 1098504)
I would think the Velcro is there to hold the batten in. I assume its on the end of the sleeve where the battens should go in.

yes there is Velcro on the sail where It would hold the battens in on the leach, but the other Velcro part I meant was at the foot of the mainsail, near the mast, on both sides of the sail. Each side has some sort of cell, that inflates with air sometimes, and puffs up, but can be held shut to prevent too much air going in the Velcro. (I guess its part of the doyle design to help put away the sail when its dropped.)
but... should I allow it to inflate?

skysail 10-03-2013 08:00 PM

Re: Mainsail battens
Ill get some pictures up when able

vtsailguy 10-03-2013 08:00 PM

Re: Mainsail battens
Hmmm, I have no clue what that is. I would suggest contacting the manufacturer.

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