[Rhodes22-list] CenterBoard Angle

Peter Thorn pthorn at nc.rr.com
Thu Mar 8 06:17:47 EST 2007


Bud,

I'll add my 2 cents, in short:  upwind all down, downwind all up.

The Rhodes has a very light, balanced helm.  With a large (175) headsail and
smaller (not-newer vertical battened) main there can be a tendancy to
leeward helm in light air.  As the boat heels when the breeze picks up this
is mitigated.   So with the sailplan center of effort (CE) forward (the rig
described above) the underwater fin's center of lateral resistance (CLR),
which can be adjusted by the centerboard, also needs to be as forward as
possible.

Another of the many advantages to having a centerboard is that you can
change the CLR while underway by adjusting the board.  In heavier air, when
you would expose less area on the headsail going to windward, you can
balance by raising the centerboard just a little.

PT

----- Original Message ----- 
From: "Mary Lou Troy" <mtroy at atlanticbb.net>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Wednesday, March 07, 2007 9:42 PM
Subject: Re: [Rhodes22-list] CenterBoard Angle


> Bud,
> I think it's just about vertical. Unless you are sailing in a very
> weedy area, I don't think having the pennant exposed is a problem.
> It's just as likely to get fouled by growth in the slot. Our's seems
> to stay cleaner the more we use it. We always pull the board up at
> anchor or when we leave the boat in the slip but sailing upwind it is
> always down as far as it will go. As Wally said, as we move off the
> wind we start pulling the board up.
>
> Mary Lou
> 1991 R22  Fretless
> Rock Hall, MD
>
>
>
>
>
> At 08:39 PM 3/7/2007, you wrote:
> >Thanks to all who responded!   Mary Lou - when you say all the way
> >down, you mean the CB is nearly vertical?
> >Do you run into any problems with the pennant line or sheaves
> >exposed in that running configuration?
> >I had thought the sheaves might get "gunked up" if they were exposed.
> >
> >Thanks again,
> >Bud
> >
> >Mary Lou Troy wrote:
> >
> >>Bud,
> >>Fretless is a 1991. We usually sail with the board all the way
> >>down. Exceptions are downwind or very shallow water.
> >>
> >>Mary Lou
> >>1991 R22  Fretless
> >>Rock Hall, MD
> >>
> >>At 09:35 PM 3/6/2007, you wrote:
> >>
> >>>Rummy,
> >>>  I have a 1990 R22, and I am pretty sure I do not have a "diamond"
board.
> >>>
> >>>Thanks,
> >>>-Bud
> >>>
> >>>
> >>>R22RumRunner at aol.com wrote:
> >>>
> >>>>Bud,
> >>>>It depends on what year and centerboard design you have?
> >>>>Rummy
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