[Rhodes22-list] So about the centerboard

Blue Heron sloopblueheron at gmail.com
Fri Mar 20 10:23:51 EDT 2009


Interesting discussion, but may I diverge a little?  Both boats portrayed
are held up by slings without safety lines between them.  Maybe that's not
so bad in the Spring, but with a bottom covered with slippery gunk during
haul-out, the boat could slip out.

Rick

On Thu, Mar 19, 2009 at 2:13 PM, Mary Lou Troy <mtroy at atlanticbb.net> wrote:

> Rob,
> What John had to say about the position of a centerboard would apply
> to any board including the board known as the "diamond board". As
> near as I can tell, Stan's advice about the diamond board has to do
> with the shape of the critter. It is possible to lower it far enough
> (by moving the knot on the upper part of the pennant)so that the
> upper part of the board is exposed as it was in the pictures I posted
> earlier. In particular see the pictures at:
>
> http://www.rhodes22.org/pipermail/rhodes22-list/attachments/20090318/78274994/attachment-0001.jpg
> and at:
>
> http://www.rhodes22.org/pipermail/rhodes22-list/attachments/20090318/4e535fe6/attachment.jpg
>
> If I read what Stan is saying, this upper part of the board is not an
> aerodynamic shape and will create excessive drag if exposed. Thus it
> is indeed possible to have the board "too far down". I suspect we've
> been sailing with the upper part of the board exposed for a long
> time. It will be interesting to see if we see any difference in
> performance. Of course we've also removed a number of layers of
> bottom paint and smoothed the surface some. I'm hoping for good things.
>
> I'm sure we won't approach the performance of the earlier lighter
> weight boats and we still have that heavy motor on the stern.
>
> Mary Lou
>
>
>
>
> At 12:44 PM 3/19/2009, you wrote:
> >So, if you have a center board, should it be fully lowered to be
> >most effective?  Sounds like the diamond board only should be
> >lowered part way.  How about a center board? - rob
> >
> >
> >-----Original Message-----
> >From: rhodes22-list-bounces at rhodes22.org
> >[mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Caesar Paul
> >Sent: Thursday, March 19, 2009 12:28 PM
> >To: The Rhodes 22 Email List
> >Subject: Re: [Rhodes22-list] So about the centerboard
> >
> >  BUT, I can kick his ass on any given
> >day. :)  Rum Runner is just one fast boat. It must be da rum.
> >
> >Rummy,
> >
> >It must be the captain; rum is additional weight.
> >
> >Caesar
> >
> >--- On Thu, 3/19/09, R22RumRunner at aol.com <R22RumRunner at aol.com> wrote:
> >
> >
> >From: R22RumRunner at aol.com <R22RumRunner at aol.com>
> >Subject: Re: [Rhodes22-list] So about the centerboard
> >To: rhodes22-list at rhodes22.org
> >Date: Thursday, March 19, 2009, 6:30 AM
> >
> >
> >Mary Lou,
> >
> >I have had enough experience handling and working on the diamond board to
> >assure you, that is what you have. The old style board would come down
> much
> >farther. Stan was able to lower the center of effort (weight) by
> >increasing it's
> >mass and surface area all at the same time. As to whether or knot it works
> as
> >advertised is up for debate. Capt. Bob Keller and I have sailed side by
> side
> >with the same exact boat with the exception of the board difference. Since
> >pointing ability and speed are dependent on so many factors, it is
> impossible
> >to  say one is better than the other. BUT, I can kick his ass on any given
> >day. :)  Rum Runner is just one fast boat. It must be da rum.
> >
> >Rummy
> >
> >
> >In a message dated 3/19/2009 8:52:46 A.M. Eastern Daylight Time,
> >mtroy at atlanticbb.net writes:
> >
> >How  'bout that. Only took me 11 years to find out.
> >
> >Question is, I still  seem to recall a discussion on here though I
> >couldn't find it in my  archives or in my very cursory search of the
> >list archives that the  diamond board was a mid-90s option. Fretless
> >is a 1991, recycled in 1998.  I don't think Stan did any work on the
> >centerboard at that time other than  painting it and replacing the
> >pennant. There is some previous owner work  on the centerboard trunk.
> >Wonder if the centerboard is original to the  boat or a later
> >replacement or........ ????
> >
> >Rummy, are you 100%  positive about the newer and more efficient part?
> >
> >Mary  Lou
> >
> >
> >
> >
> >At 08:03 AM 3/19/2009, you wrote:
> > >Mary  Lou,
> > >Fretless is equipped with the newer more efficient diamond board.  100%
> > >positive.
> > >
> > >Rummy
> > >
> > >
> > >In a message  dated 3/18/2009 8:02:36 P.M. Eastern Daylight  Time,
> > >mtroy at atlanticbb.net writes:
> > >
> > >So all  this  time I've been saying we have a conventional centerboard
>  on
> > >Fretless  because she was built in 1991 and there was a  discussion here
> at
> > >some point  saying that the diamond boards  didn't start until the
> > >mid-nineties. We've  never had the  centerboard out of the boat
> > because of an
> > >unconventional seal  on  the centerboard cap. We decided that this year
> we
> > >would have the  yard  paint the bottom. We replaced the centerboard
> pennant
> > >while  the boat was up  in slings. I took these pictures. What do
> > you  think?
> > >
> > >
> > >
> > >Mary  Lou
> > >
> > >1991  R22  Fretless
> > >
> > >Rock Hall,  MD
> > >
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