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odd noise
http://www.hobie.com/au/en/forums/viewtopic.php?f=14&t=10103		 Page 1 of 1
Author:  sunvista [ Mon Jul 21, 2008 8:59 am ]
Post subject:  odd noise
I spent a lot of time on my boat this weekend, a 1982. Every once in awhile I hear an ominous sounding "clonk" that seemingly comes from the forward, starboard hull. There is no rhythm to it. Just every once in awhile....clonk! I can't detect any play in the forward pylon (although I have shimmed my pylons with beer cans). The boat seems pretty rigid otherwise. I sail in fairly choppy seas. Any thoughts on this? Just don't want to ignore it and then have some catastrophic failure three miles out.
Author:  skipper0802 [ Mon Jul 21, 2008 9:44 am ]
Post subject: 
I heard this a lot when I took my boat apart and re-finished the hulls. In my situation, it was the large, styrofoam blocks inside the hulls making the noise when I rotated the hull.

My best guess based on your description.
Author:  sunvista [ Mon Jul 21, 2008 12:22 pm ]
Post subject: 
skipper0802 wrote:
I heard this a lot when I took my boat apart and re-finished the hulls. In my situation, it was the large, styrofoam blocks inside the hulls making the noise when I rotated the hull.

My best guess based on your description.
I assume these are for flotation. Were the blocks loose? Is that normal?
Author:  abbman [ Mon Jul 21, 2008 12:39 pm ]
Post subject: 
I'm almost positive the foam blocks are loose in the hulls. Mine makes that clunk sound when I flip the boat over.
Author:  MBounds [ Mon Jul 21, 2008 12:53 pm ]
Post subject: 
The foam blocks are for positive flotation (if the hull fills with water, it'll still float - barely).

They are loosely fitted into the space between the pylons and will clunk around, especially if you turn the boat upside down.
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