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  #11  
Old 02-13-2013
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Re: my boat dances on a ball

Quote:
Originally Posted by hallucination View Post
I have thought about that. problem is she is a single backstay with a mast roller furl. I don't know if I have a spare halyard run. Probably don't want to drop the topping lift. Plus it has a VERY abundant Bimini.

I could rig a pulley up the backstay ~10 feet up if it turns out to be the only solution.
Do yourself a favor and install a Garhaurer rigid vang and re-reave your main topping lift as a spare main halyard. Someday you'll need it and in the mean time you have a solution to using a riding sail and, in future, a "Mainster" (once you learn a bit more about sailing).
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  #12  
Old 02-13-2013
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Re: my boat dances on a ball

boat is fitted with a Selden rod kicker. How does that differ from a Garhaurer rigid vang>

Of course everyone is always learning, hopefully from smart people.
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  #13  
Old 02-13-2013
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Re: my boat dances on a ball

Quote:
Do yourself a favor and install a Garhaurer rigid vang and re-reave your main topping lift as a spare main halyard. Someday you'll need it and in the mean time you have a solution to using a riding sail and, in future, a "Mainster" (once you learn a bit more about sailing).
Know that's some good info. I never thought to turn my topping lift into a additional main halyard.
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Old 02-13-2013
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Re: my boat dances on a ball

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Originally Posted by hallucination View Post
Happy boat!


I was out in a Bavaria 40 a few weeks ago, and experienced the same thing. My ~theory~ is that the hull is acting like an aerodynamic wing (yep, pilot in another life ). I suspect that both of the boats have similar profiles, both FARR designs. Plumb stern/bow, relatively flat hull under the water line, huge beam, limited cross section on the T-keel, coffee table rudder, and a rather large amount of real estate (sorry I don't know the term) from the water line to the deck. pictures abound of what I am talking about.
I looked it up when the topic came up. Very modern looking boat with a very wide and wing shaped cabin that smoothly rises out of the foredeck and then smootly drops towards the stern. Would not surprise me if there was some aero effects going on
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Old 02-13-2013
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Re: my boat dances on a ball

I heard a snubber line run from rode to a mid cleat can be used to pull the pull the boat askew a little and help stop it.
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Old 02-13-2013
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Re: my boat dances on a ball

you can also tie a line (rolling hitch) to your anchor rode, and run it back to a winch. If she dances, crank on the winch till she stops (sounds like the inquisition ).
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Old 02-13-2013
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Re: my boat dances on a ball

Freeboard is the term you are looking for.

Brad

Quote:
Originally Posted by hallucination View Post
Happy boat!

I suspect that throwing a drogue is the easy button. that being said, a riding sail of some sort will end up as the solution.

I was out in a Bavaria 40 a few weeks ago, and experienced the same thing. My ~theory~ is that the hull is acting like an aerodynamic wing (yep, pilot in another life ). I suspect that both of the boats have similar profiles, both FARR designs. Plumb stern/bow, relatively flat hull under the water line, huge beam, limited cross section on the T-keel, coffee table rudder, and a rather large amount of real estate (sorry I don't know the term) from the water line to the deck. pictures abound of what I am talking about.

Needless to say, not a problem on an Island Packet....

of course "opinions and theories are like....everyone has one or two..."
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  #18  
Old 02-13-2013
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Re: my boat dances on a ball

Do you have a dodger? If so, can you leave it up? That might help act as a baffle if there is truly some aerodynamics at play.
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Old 02-13-2013
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Re: my boat dances on a ball

My boat sails starts to sail at anchor when the wind is over 10 kts or so. A few remedies I've used:

- riding sail, hanked to the bakstay, hoisted with the spinnaker halyard.
- bridle, rigged from the rode to the mid or stern cleat.
- 15lb Kellet on the rode
- stern anchor, not set, but deployed to just drag on the bottom.
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  #20  
Old 02-14-2013
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Re: my boat dances on a ball

I am surprised that no one mentioned one of the main potential causes. Modern rig configurations have moved towards larger mainsails and smaller jibs which pushes the mast forward in the boat from where it might have been 20 years ago. The move to cabin top mounted mainsheets has added to that trend of pushing the rig forward. While the larger mainsail and smaller jib proportion is generally more aerodynamically efficient, and makes it usually easier to sail and shift gears with changing conditions, this tendancy to move the mast forward destabilizes the boat on the mooring. With the advent of in-mast furling spars have gotten much larger and that really aggrevates the situation providing lots more sail area.

On the other hand, I see kiting is a minor nuisance, but a nuisance just the same.

My own boat has a tendancy to kite pretty aggressively in the right conditions. On one notable occasion I saw almost a knot on the GPS.

I have several strategies to deal with this. While this option is not always available, I typically let out more rode than would typically be expected. I have tried skewing the boat (as suggested) and found that works reasonably well in some conditions (steady rather than gusty winds). I have removed the jib from the furler on occasion (tight anchorage and lots of wind) and that helped a lot, but then again it is pretty easy for me to drop and raise my jibs and I do it every time I come in so it is routine.

When I cannot let out much scope I use a kellet shackled to the (boat) end of the chain.

I made a small riding sail on my previous boat. It worked very well most of the time. I came up with a design that had a pocket in its forward and aft edges and I used PVC pipe to make battens so the sail would stay stable in shape. (If I made one again, I would use heavier fabric and use strops rather than pockets to make the battens more easily removeable.) I have seen riding sails which were triangular shape when seen from above, and I speculate that may be even more effective than the simple flat triangular sail I made.

Jeff
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Last edited by Jeff_H; 02-14-2013 at 09:25 AM.
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