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 Post subject: Rudder Cavitation
PostPosted: Sun Jun 21, 2009 9:23 pm 
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Joined: Sat Apr 26, 2008 8:50 pm
Posts: 88
Location: Highland, IN
Any of you out there ever hear that humming sound when you really get the boat really cooking along? I have a H16 and I think its rudder cavitation. I have EPO rudders, and the trailing edges of them seem a bit thick, and I was considering thinning them down a bit. I was thinking the thick trailing edge would create more drag and turbulent water at trailing edge, and this is whats causing the humming and drag. I'm gonna slap on a fresh coat of epoxy with graphite mixed in...glass fiber was starting to show through, so I sanded them smooth. Thanks in advance for any advice on this! :)


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 Post subject: Re: Rudder Cavitation
PostPosted: Mon Jun 22, 2009 9:39 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 8978
Location: Oceanside, California
Yep, the trailing edge always needs some work.

Here is a quick review. Mosly about plastic blades, but works for all rudders and boards.

http://www.hobiecat.com/support/tech/hum.html

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Matt Miller
Director of Parts and Accessory Sales
Hobie Cat USA


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 Post subject: Re: Rudder Cavitation
PostPosted: Mon Jun 22, 2009 9:59 am 
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Joined: Sat Apr 26, 2008 8:50 pm
Posts: 88
Location: Highland, IN
Thank You Matt! :D


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