[Rhodes22-list] Downhill Joe's questions regarding the Rhodes centerboard

[Tootle]

Joe

Captain Alm has made some good points.  

I would reiterate that sail type and configuration are important issues.  Do
you have the IMF?

So you snorkeled down to take a look?  Was that recently?  That means you
are far from Captain Alm.
Do you have a trailer?  This whole process is safer done on trailer.

I have the centerboard, and so does Captain Rummy.  Stan makes claims for
his improved design 'Diamond Board'.  They may be true, but are they worth
major surgery to change?  I doubt it.  

However, it does sound like you have a problem.  How long has the pendant
line been there?  I doubt that it came from the shop short.  Has somebody
already changed it once?  Maybe it has developed a knot in the line
somewhere that gives it a shortened effect?  The little blocks in the line
have been known to come loose.  Maybe there is a problem with one of them.  

A ratchet works well on all those nuts and bolts that are involved with the
cover.  Be careful when removing the cover.  This would be a good
opportunity to clean and paint the well. 

These issues have been discussed many times before.  Learn how to use the
archives and search for previous discussions.  You have not gotten responses
from all those involved in previous issues, they are on hiatus so look here:

http://www.ask.com/web?qsrc=2417&o=0&l=dir&q=centerboard+site%3Arhodes22.org+

Ed K
Greenville, SC, USA
Attachment:
http://www.nabble.com/file/p16628209/rhetoric.jpg rhetoric.jpg



Downhill Joe,

First, the damn-the-torpedoes style will work fine with us.  Just be ready
to duck.

Now about your CB, I have the diamond board and the highest I can point is
about 45 degrees off the wind.  Have you measured yours?  I've never dived
on an R22 w/CB to see if it was all the way vertical so I don't know if it
should be or not.  But your assessment that this decreases the boat's
ability to point seems wrong.  If it's raked back some, that tends to shift
the center of lateral resistance aft but you still have about the same
amount of surface area under water.  The reason for the knot in the line is
so the  board DOESN'T go all the way to where it would knock on the keel
and/or put pressure on the hinge pin or elsewhere in the cb trunk.  Don't be
so quick to modify the engineering of a boat which has been carefully
engineered in the first place.  Same goes for changing to a diamond.  You're
talking major root canal in the keel and cb well and it wouldn't be worth
it.

If you want to point higher, first try these tips:  re-route the jib sheets
to the inboard fair leads and take the traveler to weather to get your sails
more close hauled, put the pop-top down, maybe lower the boom to the "first
reef" position, experiment with live ballast to find the sweet spot.  Don't
expect its full potential if you're reefed in with a big sausage on the luff
of your jib.

There are boats that point higher than an R22 but then you have to give up
some of the other great stuff the Rhodes has to offer.  Everything's a
compromise.

Slim

On Fri, Apr 11, 2008 at 9:12 PM, DownHill <jadoucet at snet.net> wrote:

>
> All,
>
> I'm not sure how this BB works in terms of my replying to specific
> information that you have sent to me, but here goes: (DAMN THE TORPEDOES ,
> FULL SPEED AHEAD?)
>
> >From the photo that Ron sent, the center board should extend vertically
> from
> the bottom of the boat. I snorkeled down to look at mine and it does not.
> The line that was installed is too short or the board sticks on the way
> down.  Since the control line is not loose, I think the line is too short.
> The photo of the mechanical advantage mechanism suggest that after
> removing
> the tens of bolts, one can  change the line to a longer one.
>
> My next question, and there always is a next question, has to do with
> diamond boards vs center boards.  It is possible to change the board to a
> diamond board, given the praise that Stan heaps onto diamond boards?
>
> Downhill Joe
>
>
>
>
> Tootle wrote:
> >
> > Joe:
> >
> > What Ron failed to say about pictures is that the boat is out of the
> > water!
> >
> > Yes people have changed the lines.  Also, ask Captain Bob Keller about
> his
> > experiences with a centerboard that does not go up and down.  Also ask
> > Captain Lou Rosenberg for his comments on the centerboard well.
> >
> > Gee, if Ron replies to your post, he needs to go back and read:
> > http://www.rhodes22.org/pipermail/rhodes22-list/2008-April/049558.html
> >
> > So, downhill Joe, where do you reside and sail.  That could have a
> bearing
> > on whether your board goes up and down.  Everheard of muscles?
> >
> > We are waiting for you to tell us more...
> >
> > Ed K
> > Greenville, SC, USA
> > attachment:
> >  http://www.nabble.com/file/p16628209/rhetoric.jpg rhetoric.jpg
> >
> >
> >
> > DownHill wrote:
> >>
> >> Has any one worked with the centerboard?
> >>
> >> I noticed that the centerboard on my '86 (rebuilt 2002) Rhodes does not
> >> extend vertically from the keel when the centerboard retrieval line is
> >> fully released.  it is approximately 30 deg from vertical.  Because of
> >> this, the boat does not point very well.
> >>
> >> Has anyone replaced this line?  Does one merely remove the bolts from
> the
> >> cabin floor to access the line?  Is there a mechanical advantage pulley
> >> system? can it be easily accessed to change the line?
> >>
> >> I've read about Stan's diamond board.  Has anyone replaced the center
> >> board with a diamond board?  did your performance improve?
> >>
> >> Thanks in advance for your help.
> >>
> >> Joe
> >>
> >
> >
> >  http://www.nabble.com/file/p16628209/rhetoric.jpg rhetoric.jpg
> >
>
> --
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> Sent from the Rudder and Centerboard mailing list archive at Nabble.com.
>

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