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 Catalina 250 Specific Forum
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Initially Posted - 05/07/2008 :  11:05:00  Show Profile  Visit Steve Blackburn's Homepage
With the centerboard lowered and it's raising line loose I'm concerned that the centerboard would tend to move back and forth (in waves) hitting the forward part of the centerboard trunk. What stops the centerboard from going forward besides the trunk itself? Should we always have a little tension on the raising line to keep it from clunking the forward trunk?

Can't seem to find information in the manual about it.
Steve Blackburn, Calgary, AB
C250WB - 1999 - Hull 396
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Silar_Phas
Deckhand

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Canada
22 Posts
Response Posted - 05/07/2008 :  14:01:27  Show Profile
I agree whit you I leave a tension on the line so it is , at least partially , stoped by the rope instead of hitting the trunk as hard as it can...
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bear
Admiral

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USA
909 Posts
Response Posted - 05/07/2008 :  18:15:36  Show Profile
Steve, For the past few years I have sailed with the centerboard raised about a hand full of rope pulled back and marked, I also think it helps with preventing round ups.
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 05/07/2008 :  21:36:17  Show Profile  Visit Steve Blackburn's Homepage
Bear, about 1 hand length? That would be about 1 inch at the other end after the purchase, and with the stretch factor possible just tighten the main line. I see what you mean if pull back far enough about preventing round ups.
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bear
Admiral

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USA
909 Posts
Response Posted - 05/08/2008 :  06:41:21  Show Profile
Steve, I have the main line marked about 18" behind the purchase, before I marked the line I would pull the line back about as far as one hand would pull it. Keep in mind there is reduced weight on that whole system with the board in the water. When I left the board down I never detected fore/aft movement, only sideways "clunks"
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 05/08/2008 :  10:09:35  Show Profile
Years ago, I remember looking at the brochure drawings of the WB and WK models, and thinking something was wrong with the position of the CB relative to the WK. Since then, owners have reported here having a better-balanced helm (less weather helm) by pulling the board part way up, thereby moving the CLR back, more like the WK.

- Historian
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barleyrooty
1st Mate

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64 Posts
Response Posted - 05/08/2008 :  15:11:11  Show Profile
I guess the books say that it's best to have the CB 50% raised when running. Any comments from experience on this?

Another question: If you're sleeping on the boat at anchor, CB up or down?
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 05/08/2008 :  15:21:59  Show Profile  Visit Steve Blackburn's Homepage
My guess is that upwind you want the CB to be all the way down?
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JohnMD
Navigator

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USA
207 Posts
Response Posted - 05/08/2008 :  16:03:54  Show Profile
If you're sleeping on the boat, you do whatever makes the thing stop banging. I had the same luck with the keel up and down (not much). I took the boat in and had carpet glued on both sides in front of the pin and that fixed that.
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britinusa
Web Editor

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USA
5404 Posts
Response Posted - 05/08/2008 :  16:12:40  Show Profile  Visit britinusa's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by JohnMD</i>
<br />If you're sleeping on the boat, you do whatever makes the thing stop banging. I had the same luck with the keel up and down (not much). I took the boat in and had carpet glued on both sides in front of the pin and that fixed that.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

What kind of carpet?

Paul
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JohnMD
Navigator

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USA
207 Posts
Response Posted - 05/08/2008 :  18:13:00  Show Profile
Looks like regular black indoor-outdoor carpet. They used contact cement and so far, so good. The next time I take the boat out of the water I'll get a picture.
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Steve Blackburn
Master Marine Consultant

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Canada
1091 Posts
Response Posted - 05/10/2008 :  20:13:08  Show Profile  Visit Steve Blackburn's Homepage
Well I guess this picture says it all:


So don't run with the CB loose, it will damage the front part of the CB trench. Very thin flakes only, easily repaired. Time to take out the MarineTex.
Edited by - Steve Blackburn on 05/10/2008 20:15:57
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.