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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 Compression Post		  New Topic  Topic Locked
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Chuck
Deckhand

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USA
5 Posts
Initially Posted - 06/24/2007 :  09:02:08  Show Profile
Greetings
I am a new (1979 fixed keel standard mast) Catalina 25 owner. Inspection reveals a rotted lower (bilge)compression post section. I am looking for info on taking out and replacing that section before I put the boat in the water and since it is almost July already I am anxious. Any info and suggestions would be greatly appreciated.
Thanks
chuck
LunaSea 1979 Catalina 25 fixed keel standard mast
Chelsea NY
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 06/24/2007 :  09:38:00  Show Profile  Visit Frank Hopper's Homepage
Sounds like you have a dinette interior. There was a good thread on this about two years ago, I hope those that were involved help you out. Welcome to the forum and congratulations on your boat.
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 06/24/2007 :  17:06:12  Show Profile
Here's one thread, although for a swing keel...

http://www.catalina-capri-25s.org/forum/topic.asp?ARCHIVE=true&TOPIC_ID=907&SearchTerms=compression
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Champipple
Master Marine Consultant

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USA
6855 Posts
Response Posted - 06/24/2007 :  20:28:30  Show Profile  Visit Champipple's Homepage
That link from dave was my post...

We cut a 4x4 piece of douglass fir, Coated it in epoxy resin and then glassed it into place.

Anybody care to ask what the scoop is on that O'day I referenced in that post???
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Chuck
Deckhand

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USA
5 Posts
Response Posted - 06/24/2007 :  21:50:00  Show Profile
Thank you all. The thread noted above was very helpful. Yes, my cabin is the dinette and the rotted compression post is under the dinette seat so is not visible. The upper visible portion shows no weakness or rot.
Since the total length of the piece to be replaced is under two feet I am going to go with a 4X4 pressure treated post.
Thank you again for your welcome and advice.
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ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 06/25/2007 :  08:48:12  Show Profile
I haven't figured out what that piece really accomplishes in a swing keel... mine doesn't have much load bearing contact with anything... just kinda 'sits' in there.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 06/25/2007 :  09:06:06  Show Profile
I think that small piece of lumber just adds rigidity to the seat rather than transferring any loads down to the hull. On my boat, there is a 1/2" gap between the wood block and the underside of the seat top.
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Chuck
Deckhand

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USA
5 Posts
Response Posted - 06/25/2007 :  13:15:43  Show Profile
Thanks for the posts. Mine is a fixed keel and the 4X4 post seems to be snug in there. When I get the rest of the glass off I will let you know how it looks. I did not think there should be a gap but I will see.
thanks again
regards
chuck
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Chuck
Deckhand

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USA
5 Posts
Response Posted - 06/27/2007 :  08:01:15  Show Profile
So now here is the next question. Don reported a 1/2 " gap between the upper and lower posts. Mine has about 1/4". Is there always intended to be a gap as part of the system to allow flex. I am at the point of cutting a new piece of wood and trying to understand the specs of what I need. Any ideas? Thanks
chuck
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 06/27/2007 :  11:01:55  Show Profile
Might be time to call Catalina.
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 06/27/2007 :  12:51:13  Show Profile
That wooden piece doesn't act like much of a compression post on my boat since it has the cutout for the swing keel trunk and I have a fin keel.

It looks something like this...
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Chuck
Deckhand

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USA
5 Posts
Response Posted - 06/27/2007 :  13:39:55  Show Profile
Thank you all for the posts.
Dave I think you might have had the best idea but I had already started the job.
Don, had I seen your drawing first I would have tried cutting out just the rotted section and filled that or perhaps knowing what I know now I might have tried one of those consolidation processes to harden the wood. But
We began to cut into the rot and soon discovered that the rot was only in the lower portion but we had already committed to the whole piece....
so we took the piece out with a multimaster tool and a chisel and sweat -- it is 95+ F here today.
The wood post turned out to be Douglas fir ( my wood craftsman was with me)and the post was fixed into place with collodial silica (spelling?) on the insides and a half inch or so on the top of the lower post. Got the wood all out and saw that there were voids left in the fiberglas between the post and the bilge so after 28 years the wood had wicked up enough bilge water to rot through a section.
I have sanded the fiberglas surround and am going to put in new glass behind the post. Having a new piece of old growth western douglas fir ( that my friend had left from a job)cut to size and we will refit the post.
I will certainly let you all know the outcome and I appreciate your thoughts.
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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.