[quote=badfish][quote=samc99us]It's in the boards and rudders. We faired the boards on a foiling boat and the noise/vibrations went away.
Most of the F18's are a touch thick at the back of the rudder and need a sanding to get them razor sharp.[/quote]
I've heard that while sharpening the back of the blades is desirable, the focus is to sharpen while keeping the edge asymmetric. Symmetric sharpening will aid harmonic vibration. Any input?
Note: During a particularly nasty stuff while hooking up to go out, I reached out to stop myself with the closest thing I could brace against...the daggerboard. Missed with my hand, but not with my forearm. Moral of the story? Be careful what you sharpen.
Also, the trailing edge of C2 boards are notoriously brittle. I'd be cautious to thin them out too much.[/quote]
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