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Foil sounds like an empty bottle in a hurricane
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skyking1231



Joined: 10 Jul 2000
Posts: 247

PostPosted: Tue Jun 04, 2019 5:51 pm    Post subject: Foil sounds like an empty bottle in a hurricane Reply with quote

I am getting the foil whistle sound tha i have read about. seems to come about when i hit approx 15mph (according to my gps). don't know if it will disappear i reach a higher speed. but anyone else getting that noise. comes from a diffence in pressure b/w the wings....
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dllee



Joined: 03 Jul 2009
Posts: 4559
Location: East Bay

PostPosted: Tue Jun 04, 2019 6:06 pm    Post subject: Reply with quote

What foil?
Np's alu whistle is well documented, even a video cure.
Naish does a low throb with bubbly background.
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skyking1231



Joined: 10 Jul 2000
Posts: 247

PostPosted: Tue Jun 04, 2019 7:21 pm    Post subject: Reply with quote

slingshot Fwind1....it has no dings on it.....
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dllee



Joined: 03 Jul 2009
Posts: 4559
Location: East Bay

PostPosted: Tue Jun 04, 2019 8:35 pm    Post subject: Reply with quote

Contact Wyatt or Tony.
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outcast



Joined: 04 May 2004
Posts: 2704

PostPosted: Tue Jun 04, 2019 8:36 pm    Post subject: Reply with quote

leave it...it actually helps to know when you're "in the zone"
Theoretically slower, i think it's fun

Some peeps sand the trailing edge to eliminate

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joethewindsufa



Joined: 10 Oct 2010
Posts: 1087
Location: Montréal

PostPosted: Wed Jun 05, 2019 4:35 pm    Post subject: Reply with quote

my Select fins used to do that
i flat sanded the back of the fins and NO MORE whistle
not much off - just a bit ... flattened the edge
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Ugly_Bird



Joined: 04 Nov 2008
Posts: 245

PostPosted: Wed Jun 05, 2019 7:24 pm    Post subject: Reply with quote

joethewindsufa wrote:
my Select fins used to do that
i flat sanded the back of the fins and NO MORE whistle
not much off - just a bit ... flattened the edge


My Makani Kohola makes funny high pitch sound. Kind of liking it, left it alone. Smile
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outcast



Joined: 04 May 2004
Posts: 2704

PostPosted: Thu Jun 06, 2019 11:11 am    Post subject: Reply with quote

Last nite while foiling was thinking how quiet the whole thing is, so you start hearing all kinds of little noises.......I could tell when I was getting close to a breach (wing close to surface) with a bubbling noise..Trippy fun

Have wondered whether it would make sense to have a whistle hole on the mast so that you know when you are too high....but then I just got a bigger mast

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fathomfathom



Joined: 25 Jul 2005
Posts: 46

PostPosted: Thu Jun 06, 2019 10:27 pm    Post subject: Reply with quote

My GoFoil makes a lot of noise.
It starts when starting to fly, pitch goes up with speed.
Then goes completely silent when very fast.
It used to drive me crazy , but now it's a great indicator of my speed, esp when accelerating surfing a wave.
When it goes silent it's "oh oh here comes the breaching" time Shocked Shocked
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LUCARO



Joined: 07 Dec 1997
Posts: 490

PostPosted: Sat Jun 08, 2019 12:39 am    Post subject: Reply with quote

outcast wrote:
Have wondered whether it would make sense to have a whistle hole on the mast so that you know when you are too high....but then I just got a bigger mast


Same. i breached so much early on I wondered about taping drinking straws to the mast about 4 inches above the fuselage.
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