[Rhodes22-list] questions regarding the Rhodes centerboard - Very Important Comment

[Bob Keller]

Downhill Joe,
I have to disagree with some of what Slim says about the CB's contribution to pointing ability, because my experience is that it is very significant.  I say this because for many months my DB did not fully deploy because it was hanging up in the trunk and I could not get the boat to point very well at all.  Once the problem was fixed it has made a huge difference.  If you're trying to point into strong winds (15-20 knots) with reefed sails it will make a huge difference if the board is all the way down or not.  I once raced (on Lake Lanier) in strong winds and could not make any headway at all, withdrew from the race and then only later realized that my board was up (brilliant I know).  The best my boat ever pointed was when I yanked my old DB all the way down as far as it would go in the trunk - just before it fell out.  Routing the sheets inside the shrouds will help too, but have a fully deployed CB is important.  Just my opinion...
Bob K
 
> Date: Sat, 12 Apr 2008 01:54:07 -0500> From: stevenalm at gmail.com> To: rhodes22-list at rhodes22.org> Subject: Re: [Rhodes22-list] questions regarding the Rhodes centerboard - Very Important Comment> > 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> > >> >> > --> > View this message in context:> > http://www.nabble.com/questions-regarding-the-Rhodes-centerboard.-tp16628186p16644690.html> > Sent from the Rudder and Centerboard mailing list archive at Nabble.com.> >> > __________________________________________________> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list> >> __________________________________________________> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
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