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Asymetrical Spinnakers

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Esteban
Navigator

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139 Posts

Initially Posted - 06/09/2005 : 15:16:18

Greetings folks,

I was so thrilled with my new head sail from Gary Ullman that I just ordered an Asymetrical Spinnaker. So now I thought I'd ask for opinoins from the wisdom gallery.

How close to a big oversize Jenny are we talking about in terms of what this sail can do? Do they do well on a Broad Reach? Down wind run?

Do I need a lighter sheet than my regular headsail sheet? If so, what size do you recommend? Thickness and lenght?

How far back do I need to move the headsail cars? Is it worth buying a second set just for the spinnaker?

How about attaching the tack? I have roller furler - do I just attach it to the furler? Any experience from anyone on these ATN tackers?

Any help and suggestions would be much appreciated. Gracias!

Esteban Diaz
Tally Ho!

Edited by - on

atgep
Master Marine Consultant

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1009 Posts

Response Posted - 06/09/2005 : 17:29:25

Congrats.
I have an asymetric from Cruising direct. It works from a beam to nearly dead downwind. It is a monster in terms of size. I use the jenny cars as far back as mine will go 88 model(short tracks). I use 5/16 sheets which are too heavy. And they are a little small for the self tailing primary winches. I will switch them to 1/4 one of these days and tie them off on a cam or jamb cleat.

GET a spinnaker sock! I bought a cheap one from went marine and it works perfectly. As for the tacker. I dont think it is required, but I tie mine off very low outside bow pulpit to the anchor roller. Here is a picture to wet your appetite.

http://www.pbase.com/sloopsailor/image/43878030

Tom.

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Esteban
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139 Posts

Response Posted - 06/09/2005 : 20:14:36

Very cool picture - Thanks Tom!

I can see why you need to tie off outside the bow pulpit... Guess tacking is out of the question?

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Kip C
Navigator

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USA
243 Posts

Response Posted - 06/09/2005 : 20:46:30

Tom,
I took a look at your awesome photo and then noticed the guy who took it, is member of our sailing club on Brookville lake in Indiana. I have also been thinking about a cruising spinnaker (used) for our standard rig. Is yours' standard? What are the measurements?

Very Nice!

Edited by - Kip C on 06/09/2005 20:47:09

atgep
Master Marine Consultant

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1009 Posts

Response Posted - 06/09/2005 : 21:55:54

Jeff took the photo during day 2 of the Beer cruise. My boat is a std rig. The sail is a 30 foot sail. It would be perfect but...the sock takes about a foot at the top making the sail a tad too big. Moving it down to the anchor roller has really made it work well.
The sock that makes it too big also makes it easy to use.

It is real fun in winds up to 10 knots true and is 409 square feet.

http://www.cruisingdirect.com/cd/CD_catalog.taf?_function=list&category=11&subcategory=08

I am sure you will be grinning when it pops open for the first time.

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Jeff Howe
Deckhand

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USA
21 Posts

Response Posted - 06/13/2005 : 19:59:45

An Asymetrical spinnaker should be sailed with a pendant line at the tack. The pendant should run from the tack down through a turning block and back to the cockpit. The pendant should be eased (raising the tack of the sail) when going down wind...as in straight with the wind or broad reaching. When you "harden up" towards a beam reach the pendant line should be brought in to bring the tack down. This straightens the luff edge of the spinnaker for closer to the wind sailing. Down wind the luff edge of the sail should be quite curved. I mounted a short bow sprit (approx. 20") to fix the turning block.
Also, when you run the sheets, run them so the sail tacks inside of itself. This means to pull the sail around to the opposite tack between the headstay and the spinnaker. Otherwise, the "lazy sheet" (the one that's laying around from the cockpit, around the headstay, and back to the clew of the spinnaker) can get down and fall below the boat while she's underway. Believe me...this is experience talking...
I did all of this on my Irwin 30...I will try and find some pictures to post.
Good Sailing to Ya...

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Kip C
Navigator

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USA
243 Posts

Response Posted - 07/01/2005 : 08:29:21

Hi Everyone,
I am starting to look for a used cruising spinnaker/gennaker. I was hoping some of you wise folks could enlighten me a little bit, as to what dimesions and/or shape sail would make the best all around use sail. Put another way, I've seen the leech length be anywhere from a couple of inches longer than the luff to maybe 3ft. shorter than the luff, what will a longer or shorter leech do for me. Also, a flatter or fuller sail, which is going to give a wider range of sail. I hope this makes some sense, if not I'm sure you'll let me know.
Thanks,

Edited by - on

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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.