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symmetrical spin vs asymmetrical spin #7554
07/08/09 09:48 PM
07/08/09 09:48 PM
Joined: Feb 2009
Posts: 24
Antigua
Blue Peter Offline OP
Senior Member
Blue Peter  Offline OP
Senior Member
Joined: Feb 2009
Posts: 24
Antigua
wondering what type of spin people prefer racing with. Is thier any advantage one or the other.

Re: symmetrical spin vs asymmetrical spin [Re: Blue Peter] #7555
07/09/09 12:55 PM
07/09/09 12:55 PM
Joined: Sep 2000
Posts: 393
Rockwood, MI, USA
Russ Atkinson Offline
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Russ Atkinson  Offline
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Joined: Sep 2000
Posts: 393
Rockwood, MI, USA
I have both. Our local PHRF does not penalize us for carrying multiple kites. We have a .6 oz all purpose, a .75 oz all purpose and an Ace. If you can only carry one, my recommendation is to get a .75oz all purpose. The Ace as a very limited range -but when in that range, it's worth it!

Re: symmetrical spin vs asymmetrical spin [Re: Russ Atkinson] #7563
07/13/09 12:38 PM
07/13/09 12:38 PM
Joined: May 2007
Posts: 268
Miami, Florida USA
the redhead Offline
Senior Member
the redhead  Offline
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Joined: May 2007
Posts: 268
Miami, Florida USA
Blue, although PHRF does not penalize for multiple kites, they do take into consideration the format... you should check with FRICTIONLOSS about use of the ASO...he carries the penalty and uses it alot, especially distance races. Bear in mind that in the CARIB we are using the CSA rating, which takes the SIZE of the sail into account with the rating. Let me know what you are thinking...and talk to the measurers in Antigua. the redhead

Re: symmetrical spin vs asymmetrical spin [Re: the redhead] #7584
07/15/09 10:47 PM
07/15/09 10:47 PM
Joined: May 2007
Posts: 1,234
Newport and Naples
Cap'n Vic Offline
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Cap'n Vic  Offline
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Joined: May 2007
Posts: 1,234
Newport and Naples
would love to see a photo of A on a 30 to get a feeling for what it looks like ... see photo next column under bird to see a 105 vs j30 with wind on beam. Am thinking I would like to attach it higher than the fractional point on the 30

for Phrf we carry .75 and .5 if there is any hint of light wind ... under 10,

but for marcho days we have an old 1.5 oversize.

Re: symmetrical spin vs asymmetrical spin [Re: Cap'n Vic] #7585
07/16/09 08:16 AM
07/16/09 08:16 AM
Joined: Apr 2003
Posts: 649
Marblehead, MA
dbows Offline
Senior Member
dbows  Offline
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Joined: Apr 2003
Posts: 649
Marblehead, MA
I think the J/30 would be awesome with a masthead asym and one of the new bolt on sprits.


David Bows
Mallorca - Hull# 397
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Re: symmetrical spin vs asymmetrical spin [Re: dbows] #7587
07/16/09 08:52 AM
07/16/09 08:52 AM
Joined: May 2007
Posts: 2,669
Portsmouth, RI
Rhapsody #348 Offline
Past J/30 Class President
Rhapsody #348  Offline
Past J/30 Class President
Joined: May 2007
Posts: 2,669
Portsmouth, RI
I think that's called a J/97!

Re: symmetrical spin vs asymmetrical spin [Re: Rhapsody #348] #7589
07/16/09 05:16 PM
07/16/09 05:16 PM
Joined: Apr 2000
Posts: 678
Maryland, USA
Bob Rutsch Offline
Governor at Large
Bob Rutsch  Offline
Governor at Large
Joined: Apr 2000
Posts: 678
Maryland, USA
There is (was?) a boat in Annapolis, hull #9, Ginch that was once a J/30 and won the NA's in 1981 with designer Rod J himself at the helm. Owner discussed with me the whether adding a masthead sheave and possibly a jumper strut would render it ineligible to be raced as a J/30. Don't know if he ever tried it but he might be lurking somewhere. Hard to say how a measurer would've treated this, but owner had already modified the keel with extension shoe for depth/stability and if I recall correctly latter modified the stern and/or rudder.

Re: symmetrical spin vs asymmetrical spin [Re: Bob Rutsch] #7593
07/16/09 09:29 PM
07/16/09 09:29 PM
Joined: Feb 2009
Posts: 24
Antigua
Blue Peter Offline OP
Senior Member
Blue Peter  Offline OP
Senior Member
Joined: Feb 2009
Posts: 24
Antigua
I am not racing one design so anything goes. but i will pay for it on csa rating. does anyone else know of good mods that will help?

Re: symmetrical spin vs asymmetrical spin [Re: Blue Peter] #7595
07/17/09 11:42 AM
07/17/09 11:42 AM
Joined: Apr 2003
Posts: 649
Marblehead, MA
dbows Offline
Senior Member
dbows  Offline
Senior Member
Joined: Apr 2003
Posts: 649
Marblehead, MA
I think a self tacking ice chest would be helpful. Then you could really load up and it move to the weather side of the boat.


David Bows
Mallorca - Hull# 397
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Re: symmetrical spin vs asymmetrical spin [Re: dbows] #7598
07/17/09 07:05 PM
07/17/09 07:05 PM
Joined: May 2007
Posts: 1,234
Newport and Naples
Cap'n Vic Offline
Senior Member
Cap'n Vic  Offline
Senior Member
Joined: May 2007
Posts: 1,234
Newport and Naples
Amazing what you can do with an oversize spin... try a 40 luff with the pole just above the life lines. Old spins are great to play with.

so OK ... maybe a bit flaky and maybe not something to do over 15... But you ODers have to think "out of the box" sometime.

you don't have to just "race" to have fun. "Testing" can be an adventure.

v

Last edited by CaptainVic; 07/17/09 07:15 PM.
Re: symmetrical spin vs asymmetrical spin [Re: Cap'n Vic] #7602
07/19/09 10:48 PM
07/19/09 10:48 PM
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
Blue J 503 Offline
Senior Member
Blue J 503  Offline
Senior Member
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
I had a .75 oz. chute re-cut to an A-sail and have used it racing and cruising. My wife says it's like turning on the afterburners when cruising. However, my erstwhile racing crew never seemed to get the hang of it, so we went back to JAM.
I'm able to reach and point fairly high with it, but it gets blanketed by the main above about 125-130 degrees apparent. At that point you need to wing it out to go dead downwind.
I've inquired about a masthead setup and have been told the mast probably won't take the load. One rigger I talked to thought you could fly a larger chute from a point 18"-24" above the stock spin halyard point.
Just my 2 cents.

Last edited by Blue J 503; 07/19/09 10:48 PM.
Re: symmetrical spin vs asymmetrical spin [Re: Blue J 503] #7605
07/20/09 11:52 AM
07/20/09 11:52 AM
Joined: Apr 2003
Posts: 649
Marblehead, MA
dbows Offline
Senior Member
dbows  Offline
Senior Member
Joined: Apr 2003
Posts: 649
Marblehead, MA
I had a class chute cut to an asym also - they will not go very high. But I have not figured out a great way to tack it to the bow. I have a strop about a foot long that I attach to the lower turnbuckle on the forestay. It has a block attached to it that the tack line runs through. This works ok but it tends to pull back quite a bit - I think I need to shorten the strop. How do other people tack the asym down?


David Bows
Mallorca - Hull# 397
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Re: symmetrical spin vs asymmetrical spin [Re: dbows] #7614
07/21/09 03:56 PM
07/21/09 03:56 PM
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
Blue J 503 Offline
Senior Member
Blue J 503  Offline
Senior Member
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
I use the A-sail in conjunction with a roller-furling genoa. I attach a snatch block to the regular jib tack shackle. I have a line with a shackle spliced in on the end which is run through the block and back to the cockpit to a cam cleat on the cabin top (normally for the spin downhaul). It's important to be able to adjust the tack height: down when reaching and up at higher apparent angles. As an added feature, I tie a line about 5 feet long to the stem fitting with the free end going to the release pin on the shackle at the end of the tack line. When it comes time to douse, releasing the tack line beyond 5 feet releases the tack, and you're ready to lower the halyard. We use the "letterbox" technique to haul the sail in - feed the lazy sheet under the loose main foot and over the boom. That keeps it in control.
Alternatively, you can use a sock/sleeve, but they require someone going forward to the mast to raise and lower. Would rather not have that requirement with just two hands if the winds get dicey.

Re: symmetrical spin vs asymmetrical spin [Re: Blue J 503] #7615
07/21/09 08:19 PM
07/21/09 08:19 PM
Joined: Apr 2003
Posts: 649
Marblehead, MA
dbows Offline
Senior Member
dbows  Offline
Senior Member
Joined: Apr 2003
Posts: 649
Marblehead, MA
Originally Posted by Blue J 503
I use the A-sail in conjunction with a roller-furling genoa. I attach a snatch block to the regular jib tack shackle. I have a line with a shackle spliced in on the end which is run through the block and back to the cockpit to a cam cleat on the cabin top (normally for the spin downhaul). It's important to be able to adjust the tack height: down when reaching and up at higher apparent angles. As an added feature, I tie a line about 5 feet long to the stem fitting with the free end going to the release pin on the shackle at the end of the tack line. When it comes time to douse, releasing the tack line beyond 5 feet releases the tack, and you're ready to lower the halyard. We use the "letterbox" technique to haul the sail in - feed the lazy sheet under the loose main foot and over the boom. That keeps it in control.
Alternatively, you can use a sock/sleeve, but they require someone going forward to the mast to raise and lower. Would rather not have that requirement with just two hands if the winds get dicey.


So how do you keep the tack line from loading up on the roller furler drum? What do you do to jibe, the tack line will load up and pull accross the roller furler drum? This is why I figured this would not work. There is a ton of load on the tack so I figured you needed to keep it outside of the forestay triangle.

David


David Bows
Mallorca - Hull# 397
~~~~~_/)~_/)~~~~_/)~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~
Re: symmetrical spin vs asymmetrical spin [Re: dbows] #7619
07/22/09 07:04 PM
07/22/09 07:04 PM
Joined: Oct 2006
Posts: 83
Waukegan, IL
jhoskins Offline
Senior Member
jhoskins  Offline
Senior Member
Joined: Oct 2006
Posts: 83
Waukegan, IL
I bought a used melges 24 kite to play with. It is about 30 sq feet smaller than local PHRF would allow. I have not raced it, but have used it enough to tell it is slower than the regular spinns. A full size one might be a different story.

For the tack I put the pole on the deck with a pad eye at the bottom of the mast and a stainless strop bolted to the forestay chainplate. A block at the end of the pole and a long tackline to replace my downhaul. The set up worked well and if I decided to get serious about it I might go higher with the hoist.

Next year thinking a new sym .5 for PHRF for all this light Lake Michigan air.

John
358


John
Madcap 358
Re: symmetrical spin vs asymmetrical spin [Re: jhoskins] #7634
07/27/09 07:04 PM
07/27/09 07:04 PM
Joined: May 2007
Posts: 1,234
Newport and Naples
Cap'n Vic Offline
Senior Member
Cap'n Vic  Offline
Senior Member
Joined: May 2007
Posts: 1,234
Newport and Naples
.5 ... way to go under 10. maybe even up to 12.

Re: symmetrical spin vs asymmetrical spin [Re: dbows] #7635
07/27/09 10:13 PM
07/27/09 10:13 PM
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
Blue J 503 Offline
Senior Member
Blue J 503  Offline
Senior Member
Joined: Jun 2005
Posts: 54
Cleveland Hts., OH, USA
To tell you the truth, I haven't jibed much, maybe once or twice.
The sail pulls the tack line forward of the foretriangle, but that's not to say it doesn't rub against the drum at some point. Since it's just my wife and me, we don't use it in winds that would cause a ton of load. I've thought about using the pole as suggested above, or getting a sprit or long anchor roller as an improvement, but haven't done anything yet. We haven't even used it this year - there was either no wind or too much wind, and in the wrong direction.

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