humming centerboard??

I noticed a distinct humming sound coming from what seemed to be my centerboard. It would only vibrate when I was sailing close-hauled, full hike and full speed. It went away if I slowed down or changed my point of sail.

I suspect a warped centerboard perhaps, or is it something else?

Anyone ever dealt with this before?

I have to think this is slowing me down somehow.
 
Yeah. It is very common amongst lasers. The centreboard hums when the trailing edge is round off or jagged. You can leave your centreboard as it is because there is nothing wrong with the centreboard if it hums.

If you want to stop the hum you can sand the trailing edge of the centreboard to a fine point so it is almost sharp or you can sand the trailing edge so instead of being curved at the trailing edge it is square/flat.

It doesn't affect the speed at all. Mine hums downwind in some breeze and I am fine with it.

Hope I helped!
 
Yep mine is getting rather tuneful now. It still makes a noise when I lift it when im going downwind etc but its not so bad. just means that your board doesnt have a clean flow of water over it. No issue if your not racing competitavly.
 
Did you recently "upgrade" to the new centreboard brake?
If you set it too tight the cb will hum a lot. It is also very slow. I speak from experience.

I noticed a distinct humming sound coming from what seemed to be my centerboard. It would only vibrate when I was sailing close-hauled, full hike and full speed. It went away if I slowed down or changed my point of sail.

I suspect a warped centerboard perhaps, or is it something else?

Anyone ever dealt with this before?

I have to think this is slowing me down somehow.
 
Maybe if you taught it the words. This guy is singing a song for the Vanderbilt-Ingram Cancer Centerboard

 
I imagine it is slowing me down quite a bit. I can try to sharpen the trailing edge but its not as if it is dull or warped. I haven't installed a new centerboard brake. I am stumped to be honest.
 
It's called detached flow. Long story short, the water can't decide which side of the board to "release from" first. Two solutions, either sharpen down so that there is a pure separation point - or go the easy way. Three passes with a sheet of 600 down the edge turning the 90 factory flat edge they leave into a slight angle will fix the problem.
 

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