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whistling TT ?!

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downunder
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whistling TT ?!

Postby downunder » Thu Oct 22, 2020 2:20 pm

Hey everyone,

This is a first for me! Full carbon fiber TT, CrazyFly,

whistling like crazy fly, pardon a pun!

Why? Why is it whistling? Plus, only on one side!

Very interesting! Ideas?
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Re: whistling TT ?!

Postby leeuwen » Thu Oct 22, 2020 2:31 pm

Interesting, usually you would hear your lines whistling not your board.
Easiest to try would be a different set of fins or try a session without fins.

My carbon Raptor LTD certainly does not have this issue.
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Janus
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Re: whistling TT ?!

Postby Janus » Thu Oct 22, 2020 2:54 pm

only go the non whistling direction.. and switch back.. 8)

Check fins and rails, perhaps sand a little here and there..
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Re: whistling TT ?!

Postby grigorib » Thu Oct 22, 2020 2:58 pm

Friend’s carbon CF does the same!
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Re: whistling TT ?!

Postby downunder » Thu Oct 22, 2020 3:04 pm

Yep,

Its Raptor. I've put a finger on top and bottom before the fin, did not help.

The whistling is bigger than on any hydrofoil. It does sound like coming from middle of the board tho.

People on the beach can hear it, 3-4m away...
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Re: whistling TT ?!

Postby sflinux » Thu Oct 22, 2020 3:18 pm

Try riding it without any fins. I had a surfboard that whistled. Sanding/Polishing the fin helped a bit. The fin ended up having a fracture at the base, which I believe caused it to overflex and vibrate. I've since switched to different fins.
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Re: whistling TT ?!

Postby alford » Thu Oct 22, 2020 3:42 pm

So this is a bad thing?
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Re: whistling TT ?!

Postby Aberdovy kiter » Thu Oct 22, 2020 3:48 pm

It's the nano skin on the bottom of the board.
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downunder
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Re: whistling TT ?!

Postby downunder » Fri Oct 23, 2020 1:08 am

alford wrote: ↑
Thu Oct 22, 2020 3:42 pm
 So this is a bad thing?
Yes. Because it goes through your body mate, it is not like a distant noise but the drill in a head.
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Re: whistling TT ?!

Postby matth » Fri Oct 23, 2020 3:33 am

Yup....my Crazyfly likes to whistle.
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