Author Topic: Leaking deck and double hull on contest 28  (Read 2095 times)

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aksel

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Leaking deck and double hull on contest 28
« on: 20 May, 2011, 03:48:16 »
Hello forum,

I am considering buying a contest 28 with a few flaws, but a brand new engine. The major flaw is a couple of leaks from the deck, from where the new cable to the top-lantern is pulled through (I know, hopeless), and another which, according to the owner, is from where one of the stanchions is fastende to the deck.

Both these things are possible to fix, but the contest 28 has a double hull, that is the actual outer hull, and an inner hull which probably is meant to insulate???  I will probably have to cut away the inner hull around where all the stanchions are fastened? This seems like quite a job! Is it worth the effort? Does anyone have any tips that may help me make up my mind whether to buy or not?

Thank you
Aksel H.
Norway

Offline BJ

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Re: Leaking deck and double hull on contest 28
« Reply #1 on: 20 May, 2011, 09:19:16 »
Hi Aksel, welcome to the forum. To start with your last question: the only one who can answer that is you. It will be quite some work but if the price is right and you like working on boats then it shouldn't be a problem. About the construction details I would suggest that you contact mr. Dick Zaal. He is the designer of the boat and also a member of the CYOC. You can contact him through this form .

rgeensen

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Re: Leaking deck and double hull on contest 28
« Reply #2 on: 20 May, 2011, 12:46:36 »
Hi Aksel,

I have owned a Contest 28 (also with a new engine). I have had some leakages as well. Some were very easy to solve, others more difficult, however I fixed them all, without breaking anything away.

Consider the following: If it is 'rainwater leakage' it has to come from above. Since there is a dubble hull, the place where it gets in, does not have to be te same place as where it goes out (into your boat). This makes it more difficult to resolve.

What I finally did is loosen almost all screws on deck, used thinner and than fixed them again with sikaflex glue. Some screws will be easy to unscrew, others may be difficult. My advise never use exesive force, try using specials oils (kruipolie?), WD40 etc.

Finally I have sikaflexed all the aluminium window frames as well (without taking them out). Of course all the work did take some time. In my opinion worth wile. I loved the Contest 28. Stable, strong, seaworthy and even a fast little boat.

One weak spot of the Contest 28: The wood under the deck stepped mast is rotten many times. I had to replace it on my ship. Did cost me about € 500,- It seems that it is a known weakness of the C28, however no problem to fix and you can sail for another 30 years with it.

I traded my C28 for a C34.

Hope this helps a bit. Good luck with taking the right decision.

Offline BJ

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Re: Leaking deck and double hull on contest 28
« Reply #3 on: 20 May, 2011, 13:18:30 »
kruipolie = penetrating oil.

aksel

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Re: Leaking deck and double hull on contest 28
« Reply #4 on: 20 May, 2011, 20:53:44 »
Thank you very much BJ and rgensen, you have been most helpful,

But it seems i cannot use the form to contact Dick Zaal since I am not a cyoc member (yet?).

So I'll ask rgensen instead: I have understood that the outer hull is fibreglass all the way through. Is that correct or is it some sandwich-construction as (I believe?) most other boats are?

Thank you

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Re: Leaking deck and double hull on contest 28
« Reply #5 on: 23 May, 2011, 08:53:24 »
You can also send Dick a direct e-mail if the form doesn't work, emailaddress can be found on his site. 

The C28, like almost all 'older' Contest is indeed a fullglass hull which is also one of the reasons that they are rather heavy. They are also rather unbreakable though  ;)

Valentine

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Re: Leaking deck and double hull on contest 28
« Reply #6 on: 24 May, 2011, 13:14:32 »
Don´t worry about stableness! Our C29 is now 44 years old  fully laminated without any sandwich fillings and shows no signs whatsoever of any weakness. I would be more concerned if it was a Sandwich construction. Once water gets into the sandwich material, no matter if it is wood or foam, the sandwichmaterial will simply disappear over the years leaving you with a rubber soft boat.

Best regards
Alex

aksel

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Re: Leaking deck and double hull on contest 28
« Reply #7 on: 25 May, 2011, 04:25:55 »
Hehe,

There seems to be diverging opinions on these matters. Anyway, my love and I are now the proud owners of a beautiful red Contest 28  :D

See you out there on the waves...

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Re: Leaking deck and double hull on contest 28
« Reply #8 on: 25 May, 2011, 08:44:15 »
Congratulations, will you put some pictures on the internet so we can admire her....   ;)

rgeensen

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Re: Leaking deck and double hull on contest 28
« Reply #9 on: 25 May, 2011, 09:50:11 »
Hi
a bit late response. The hull is complete fiberglass. The deck however is sandwich with balsa wood. What I have been told (but cannot be sure) that this sandwich construction is devided in all very small parts that are isolated from each other with fiberglass. So if in any spot the balsa wood is rotting, this would not damage the rest of the construction.

Anyone at the forum who could confirm this?

aksel

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Re: Leaking deck and double hull on contest 28
« Reply #10 on: 14 June, 2011, 00:52:29 »
Thank you all for answers.

Another forum contributor has some other info on the hull construction: http://www.cyoc.nl/forum/index.php/topic,1801.0.html

Pictures are posted on: http://www.cyoc.nl/forum/index.php/topic,1805.0.html

greetings
Aksel

 


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