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-   -   Centerboard leak (http://www.sailnet.com/forums/gear-maintenance/15826-centerboard-leak.html)

mikeedmo 04-30-2006 03:00 PM

Centerboard leak
 
Just had our Kadey-Krogen '86 dual centerboard cutter pulled. Seems the pivot pin on the aft centerboard had been leaking a bit. That's been fixed but water was still "weeping" from the centerboard box two weeks later. The yard fiberglass guys said it was okay to glass over the drain holes we drilled to dry out the area even though they were still "weeping" a little water. Any thoughts as to whether this might prove to be a problem further down the road or is it okay to glass up a closed space knowing there is some moisture left?

Thanks as usual for all your expert advice!

sailandoar 04-30-2006 05:11 PM

Why not dry the area out before sealing it up?

As a practical matter in temperate climates it probably won't hurt to encapsulate moisture but in the North County it does not take much water to freeze and swell and so open up/crack the structure that is trying to restrain it.

Set up a tube in the space to be dryed with air flowing continuously and the moving air will carry away a lot of moisture. More air flow means quicker drying.

foxglove 04-30-2006 09:58 PM

I had a similar problem
 
I once had my 21' centerboard trailer sailor fly off my trailer while tooling down the road. The boat was ok but developed a leak which sometimes was severe. The leak was not consistent - it only occurred when the board was down.

I finally discovered that the pivot bolt was several inches back from the leading edge of the board and when i dropped the board, the forward segment of the board swung up into the trunk. In the trunk was a stopper bolt that was intended to limit the travel of the board so that if the hauling wire snapped, the board wouldn't swing down and have the upper portion of the board swing into the trunk and smash it.

When the boat flew off the trailer, the board must have swung down and the forward portion of the board swung into the bolt with enough force to tear up the fiberglass around it creating the leak. I fixed the glass and replaced the bolt. Never leaked again.

Max

sailingdog 04-30-2006 10:14 PM

I would advise against glassing over the area unless you can find the source of the water. Otherwise, you will be trapping water in the laminate. In temperate climates, this may lead to osmosis at some point. In colder climates, the water will freeze and expand, causing damage, and as more water collects, the damage will grow over time.


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