Wind-induced noise in rigging/mast while docked

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Wind-induced noise in rigging/mast while docked

by keblinskas Keblinskas :: Rate this Message:

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I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast
up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well
sheltered around all points,except the North. The periodic winter cold fronts blow in from the North
with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.
 
While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.
 
Please let me know if any of you have experienced or heard of someone else running into something
similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,
other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)
faces to leeward?
 
Your comments will be very appreciated, so I thank you in advance,
 
Al Keblinskas
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Re: Wind-induced noise in rigging/mast while docked

by Mary Lou Troy-2 :: Rate this Message:

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Hi Al,
We've occasionally heard the noise you describe
with the boat in the slip and the wind coming
from a certain direction. I think it's the wind
playing the mast tube across the slot. I have not
found a way to get rid of it. I'd be interested
to hear what anyone else has to say. Several
other boats in our marina do this but Fretless has her own identifiable moan.

Mary Lou
1991 R22 Fretless
Rock Hall, MD

At 02:48 PM 5/14/2008, you wrote:

>I keep my '97 Rhodes 22 on the Boca Ciega Bay of
>St. Petersburg, FL , docked on a lift, with mast
>up, at my back yard seawall, on the St. Pete
>Beach island side of the bay. The dock is fairly well
>sheltered around all points,except the North.
>The periodic winter cold fronts blow in from the North
>with 20+ knot gusty wind which produces a
>horrendous wailing howl in the rigging/mast.
>
>While docked, the boat's stern faces NE ; it
>seems to me the wailing noise must be caused by
>the wind entering the IMF's hollow mast groove
>and then exiting near the top producing the
>howl, like an organ pipe. I don't think the noise is from the shrouds.
>
>Please let me know if any of you have
>experienced or heard of someone else running into something
>similar, with any IMF system. If so, has anybody
>come up with a method to mitigate this problem,
>other than lowering the mast / derigging or
>docking the boat so that the stern (and mast groove)
>faces to leeward?
>
>Your comments will be very appreciated, so I thank you in advance,
>
>Al Keblinskas
>_________________________________________________________________
>Get Free (PRODUCT) RED™  Emoticons, Winks and Display Pics.
>http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008
>__________________________________________________
>Use Rhodes22-list@..., Help? www.rhodes22.org/list
>
>No virus found in this incoming message.
>Checked by AVG.
>Version: 8.0.100 / Virus Database:
>269.23.16/1432 - Release Date: 5/14/2008 7:49 AM

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Keblinskas & Wind-induced noise in rigging/mast while docked

by Tootle :: Rate this Message:

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Al:

I get a hummmm... which increases as wind increases... HUMMMM...

Ed K
Greenville, SC, USA
"The latest survey shows that three out of four people make up 75% of the population."






I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast
up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well
sheltered around all points,except the North. The periodic winter cold fronts blow in from the North
with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.
 
While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.
 
Please let me know if any of you have experienced or heard of someone else running into something
similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,
other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)
faces to leeward?
 
Your comments will be very appreciated, so I thank you in advance,
 
Al Keblinskas

Re: Wind-induced noise in rigging/mast while docked

by Rick Lange-2 :: Rate this Message:

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Hi Al,
Use the topping lift to raise the boom so it lies against
the mast.  A bungie cord will keep the boom from banging against the
mast.
Rick
> Hi Al,
> We've occasionally heard the
noise you describe
> with the boat in the slip and the wind
coming
> from a certain direction. I think it's the wind
> playing the mast tube across the slot. I have not
> found
a way to get rid of it. I'd be interested
> to hear what anyone
else has to say. Several
> other boats in our marina do this but
Fretless has her own identifiable
> moan.
>
>
Mary Lou
> 1991 R22 Fretless
> Rock Hall, MD
>

> At 02:48 PM 5/14/2008, you wrote:
>
>>I
keep my '97 Rhodes 22 on the Boca Ciega Bay of
>>St.
Petersburg, FL , docked on a lift, with mast
>>up, at my back
yard seawall, on the St. Pete
>>Beach island side of the bay.
The dock is fairly well
>>sheltered around all points,except
the North.
>>The periodic winter cold fronts blow in from the
North
>>with 20+ knot gusty wind which produces a
>>horrendous wailing howl in the rigging/mast.
>>
>>While docked, the boat's stern faces NE ; it
>>seems
to me the wailing noise must be caused by
>>the wind entering
the IMF's hollow mast groove
>>and then exiting near the top
producing the
>>howl, like an organ pipe. I don't think the
noise is from the shrouds.
>>
>>Please let me know
if any of you have
>>experienced or heard of someone else
running into something
>>similar, with any IMF system. If so,
has anybody
>>come up with a method to mitigate this problem,

>>other than lowering the mast / derigging or
>>docking the boat so that the stern (and mast groove)
>>faces to leeward?
>>
>>Your comments
will be very appreciated, so I thank you in advance,
>>
>>Al Keblinskas
>>_________________________________________________________________

>>Get Free (PRODUCT) RED™ Emoticons, Winks and Display Pics.

>>http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008

>>__________________________________________________
>>Use Rhodes22-list@..., Help? www.rhodes22.org/list
>>
>>No virus found in this incoming message.
>>Checked by AVG.
>>Version: 8.0.100 / Virus Database:

>>269.23.16/1432 - Release Date: 5/14/2008 7:49 AM
>

> __________________________________________________
>
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>



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Re: Keblinskas & Wind-induced noise in rigging/mast while docked

by petelargo :: Rate this Message:

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I just went through this on the keys trip. I also get a hummmmming noise. I felt around the boat and it did not seem to be the IMF. I could feel the hum more in the boom, but that wasn;t the source either. It was the boom cord going from between the rear stays all the way to the top. It gets a frequency going. I bungeed the boom cord at the rear to the rear stays and that was all she wrote.


Al:

I get a hummmm... which increases as wind increases... HUMMMM...

Ed K
Greenville, SC, USA
"The latest survey shows that three out of four people make up 75% of the population."




keblinskas Keblinskas wrote:
I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast
up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well
sheltered around all points,except the North. The periodic winter cold fronts blow in from the North
with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.
 
While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.
 
Please let me know if any of you have experienced or heard of someone else running into something
similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,
other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)
faces to leeward?
 
Your comments will be very appreciated, so I thank you in advance,
 
Al Keblinskas

Re: Keblinskas & Wind-induced noise in rigging/mast while docked

by Lady in Red :: Rate this Message:

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I get a hum from the topping lift....if the wind is right I can tune the rig to A=440.
   
  elle

petelargo <petelauritzen@...> wrote:
 
I just went through this on the keys trip. I also get a hummmmming noise. I
felt around the boat and it did not seem to be the IMF. I could feel the hum
more in the boom, but that wasn;t the source either. It was the boom cord
going from between the rear stays all the way to the top. It gets a
frequency going. I bungeed the boom cord at the rear to the rear stays and
that was all she wrote.


Al:

I get a hummmm... which increases as wind increases... HUMMMM...

Ed K
Greenville, SC, USA
"The latest survey shows that three out of four people make up 75% of the
population."





keblinskas Keblinskas wrote:

>
>
> I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL ,
> docked on a lift, with mast
> up, at my back yard seawall, on the St. Pete Beach island side of the bay.
> The dock is fairly well
> sheltered around all points,except the North. The periodic winter cold
> fronts blow in from the North
> with 20+ knot gusty wind which produces a horrendous wailing howl in the
> rigging/mast.
>
> While docked, the boat's stern faces NE ; it seems to me the wailing noise
> must be caused by the wind entering the IMF's hollow mast groove and then
> exiting near the top producing the howl, like an organ pipe. I don't think
> the noise is from the shrouds.
>
> Please let me know if any of you have experienced or heard of someone else
> running into something
> similar, with any IMF system. If so, has anybody come up with a method to
> mitigate this problem,
> other than lowering the mast / derigging or docking the boat so that the
> stern (and mast groove)
> faces to leeward?
>
> Your comments will be very appreciated, so I thank you in advance,
>
> Al Keblinskas
>
>

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We can't change the angle of the wind....but we can adjust our sails.

 1992 Rhodes 22   Recyc '06  "WaterMusic"   (Lady in Red)
       
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Re: Wind-induced noise in rigging/mast while docked

by keblinskas Keblinskas :: Rate this Message:

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Thank you, Mary Lou and Rick. Your idea about hoisting the boom, Rick, to block the slot
is excellent. Have you heard of anyone using it to dampen the sound? I'll sure try it,
 
Al Keblinskas> Date: Wed, 14 May 2008 20:37:07 -0400> From: SloopBlueHeron@...> To: rhodes22-list@...> Subject: Re: [Rhodes22-list] Wind-induced noise in rigging/mast while docked> > > > > Hi Al,> Use the topping lift to raise the boom so it lies against> the mast.  A bungie cord will keep the boom from banging against the> mast.> Rick> > Hi Al, > > We've occasionally heard the> noise you describe > > with the boat in the slip and the wind> coming > > from a certain direction. I think it's the wind > > playing the mast tube across the slot. I have not > > found> a way to get rid of it. I'd be interested > > to hear what anyone> else has to say. Several > > other boats in our marina do this but> Fretless has her own identifiable > > moan. > > > >> Mary Lou > > 1991 R22 Fretless > > Rock Hall, MD > >> > > At 02:48 PM 5/14/2008, you wrote: > > > >>I> keep my '97 Rhodes 22 on the Boca Ciega Bay of > >>St.> Petersburg, FL , docked on a lift, with mast > >>up, at my back> yard seawall, on the St. Pete > >>Beach island side of the bay.> The dock is fairly well > >>sheltered around all points,except> the North. > >>The periodic winter cold fronts blow in from the> North > >>with 20+ knot gusty wind which produces a > >>horrendous wailing howl in the rigging/mast. > >> > >>While docked, the boat's stern faces NE ; it > >>seems> to me the wailing noise must be caused by > >>the wind entering> the IMF's hollow mast groove > >>and then exiting near the top> producing the > >>howl, like an organ pipe. I don't think the> noise is from the shrouds. > >> > >>Please let me know> if any of you have > >>experienced or heard of someone else> running into something > >>similar, with any IMF system. If so,> has anybody > >>come up with a method to mitigate this problem,> > >>other than lowering the mast / derigging or > >>docking the boat so that the stern (and mast groove) > >>faces to leeward? > >> > >>Your comments> will be very appreciated, so I thank you in advance, > >> > >>Al Keblinskas > >>_________________________________________________________________> > >>Get Free (PRODUCT) RED™ Emoticons, Winks and Display Pics.> > >>http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008> > >>__________________________________________________ > >>Use Rhodes22-list@..., Help? www.rhodes22.org/list > >> > >>No virus found in this incoming message. > >>Checked by AVG. > >>Version: 8.0.100 / Virus Database:> > >>269.23.16/1432 - Release Date: 5/14/2008 7:49 AM > >> > > __________________________________________________ > >> Use Rhodes22-list@..., Help? www.rhodes22.org/list > >> > > > Join ISP.COM today - $9.95 internet, less than 1/2 the cost of AOL!> Try us out, http://www.isp.com/> __________________________________________________> Use Rhodes22-list@..., Help? www.rhodes22.org/list
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Parent Message unknown Re: Wind-induced noise in rigging/mast while docked

by Arthur H. Czerwonky :: Rate this Message:

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All,
I had a chance to meet with Al yesterday after his late night arrival the night before.  After checking out his 26' mast flute, I think we have come to a solution to his problem with unhappy neighbors.  He seemed very happy with the service received from GBI.  All in a day's work in the Rhoadie fleet!
Art

-----Original Message-----

>From: keblinskas Keblinskas <keblinskas@...>
>Sent: May 14, 2008 2:48 PM
>To: rhodes22-list@...
>Subject: [Rhodes22-list] Wind-induced noise in rigging/mast while docked
>
>
>I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast
>up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well
>sheltered around all points,except the North. The periodic winter cold fronts blow in from the North
>with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.
>
>While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.
>
>Please let me know if any of you have experienced or heard of someone else running into something
>similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,
>other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)
>faces to leeward?
>
>Your comments will be very appreciated, so I thank you in advance,
>
>Al Keblinskas
>_________________________________________________________________
>Get Free (PRODUCT) RED™  Emoticons, Winks and Display Pics.
>http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008
>__________________________________________________
>Use Rhodes22-list@..., Help? www.rhodes22.org/list

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Re: Wind-induced noise in rigging/mast while docked

by Rob Lowe :: Rate this Message:

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Well come on now Art, what is/was your solution?? - rob


----- Original Message -----
From: "Arthur H. Czerwonky" <czerwonky@...>
To: "The Rhodes 22 mail list" <rhodes22-list@...>
Sent: Monday, May 19, 2008 2:18 PM
Subject: Re: [Rhodes22-list] Wind-induced noise in rigging/mast while docked


> All,
> I had a chance to meet with Al yesterday after his late night arrival the
night before.  After checking out his 26' mast flute, I think we have come
to a solution to his problem with unhappy neighbors.  He seemed very happy
with the service received from GBI.  All in a day's work in the Rhoadie
fleet!

> Art
>
> -----Original Message-----
> >From: keblinskas Keblinskas <keblinskas@...>
> >Sent: May 14, 2008 2:48 PM
> >To: rhodes22-list@...
> >Subject: [Rhodes22-list] Wind-induced noise in rigging/mast while docked
> >
> >
> >I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL ,
docked on a lift, with mast
> >up, at my back yard seawall, on the St. Pete Beach island side of the
bay. The dock is fairly well
> >sheltered around all points,except the North. The periodic winter cold
fronts blow in from the North
> >with 20+ knot gusty wind which produces a horrendous wailing howl in the
rigging/mast.
> >
> >While docked, the boat's stern faces NE ; it seems to me the wailing
noise must be caused by the wind entering the IMF's hollow mast groove and
then exiting near the top producing the howl, like an organ pipe. I don't
think the noise is from the shrouds.
> >
> >Please let me know if any of you have experienced or heard of someone
else running into something
> >similar, with any IMF system. If so, has anybody come up with a method to
mitigate this problem,
> >other than lowering the mast / derigging or docking the boat so that the
stern (and mast groove)

> >faces to leeward?
> >
> >Your comments will be very appreciated, so I thank you in advance,
> >
> >Al Keblinskas
> >_________________________________________________________________
> >Get Free (PRODUCT) RED™  Emoticons, Winks and Display Pics.
> >http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008
> >__________________________________________________
> >Use Rhodes22-list@..., Help? www.rhodes22.org/list
>
> __________________________________________________
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Re: Keblinskas & Wind-induced noise in rigging/mast while docked

by Rory Orkin :: Rate this Message:

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I get the noise also.. What exaxtly do you mean by "boom cord". Topping lift ??


I just went through this on the keys trip. I also get a hummmmming noise. I felt around the boat and it did not seem to be the IMF. I could feel the hum more in the boom, but that wasn;t the source either. It was the boom cord going from between the rear stays all the way to the top. It gets a frequency going. I bungeed the boom cord at the rear to the rear stays and that was all she wrote.


Al:

I get a hummmm... which increases as wind increases... HUMMMM...

Ed K
Greenville, SC, USA
"The latest survey shows that three out of four people make up 75% of the population."




keblinskas Keblinskas wrote:
I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast
up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well
sheltered around all points,except the North. The periodic winter cold fronts blow in from the North
with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.
 
While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.
 
Please let me know if any of you have experienced or heard of someone else running into something
similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,
other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)
faces to leeward?
 
Your comments will be very appreciated, so I thank you in advance,
 
Al Keblinskas


Re: Keblinskas & Wind-induced noise in rigging/mast while docked

by Jim Connolly :: Rate this Message:

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Since I am on a mooring, I don't get wind across the mast slot.  I do
sometimes get a similar noise, more of a humm humm humm (a deep tome with
about a 2-cycle per second volume oscillation).  The source, I found by
accident was an overly tight topping lift.  I had the habit of pulling the
mainsheet tight and cleating it off to keep everything stowed on the
mooring.   The wind vibrates the topping lift line like a big bass fiddle.
I detected it when I grabbed the topping lift about 2' above the cabin top,
and the noise stopped.  I just slack the mainsheet a small amount and it
stops.  Hope this is helpful.

Jim Connolly
s/v Inisheer
'85 recycled '03

-----
From: rhodes22-list-bounces@...
[mailto:rhodes22-list-bounces@...] On Behalf Of Rory Orkin
Sent: Tuesday, May 20, 2008 5:09 PM
To: rhodes22-list@...
Subject: Re: [Rhodes22-list] Keblinskas & Wind-induced noise in rigging/mast
while docked


I get the noise also.. What exaxtly do you mean by "boom cord". Topping lift
??


I just went through this on the keys trip. I also get a hummmmming noise. I
felt around the boat and it did not seem to be the IMF. I could feel the hum
more in the boom, but that wasn;t the source either. It was the boom cord
going from between the rear stays all the way to the top. It gets a
frequency going. I bungeed the boom cord at the rear to the rear stays and
that was all she wrote.


Tootle wrote:

>
> Al:
>
> I get a hummmm... which increases as wind increases... HUMMMM...
>
> Ed K
> Greenville, SC, USA
> "The latest survey shows that three out of four people make up 75% of
> the population."
>
>
>
>
>
> keblinskas Keblinskas wrote:
>>
>>
>> I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL ,
>> docked on a lift, with mast up, at my back yard seawall, on the St.
>> Pete Beach island side of the bay. The dock is fairly well sheltered
>> around all points,except the North. The periodic winter cold fronts
>> blow in from the North with 20+ knot gusty wind which produces a
>> horrendous wailing howl in the rigging/mast.
>>  
>> While docked, the boat's stern faces NE ; it seems to me the wailing
>> noise must be caused by the wind entering the IMF's hollow mast
>> groove and then exiting near the top producing the howl, like an
>> organ pipe. I don't think the noise is from the shrouds.
>>  
>> Please let me know if any of you have experienced or heard of someone
>> else running into something similar, with any IMF system. If so, has
>> anybody come up with a method to mitigate this problem, other than
>> lowering the mast / derigging or docking the boat so that the stern
>> (and mast groove) faces to leeward?
>>  
>> Your comments will be very appreciated, so I thank you in advance,
>>  
>> Al Keblinskas
>>
>>
>
>

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8324p17350949.html
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Re: Wind-induced noise in rigging/mast while docked

by keblinskas Keblinskas :: Rate this Message:

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Art,
It was a pleasure to meet you ;I sure appreciate you taking the time to help me out with this
nasty problem, and thank you for showing me your boat & YC. I trust we'll whip this with your
experienced help. Did you make it to Atlanta? I'm at Ft Bragg, BC  now. Till next time, AlKeblinskas                                                
  > Date: Mon, 19 May 2008 14:18:21 -0400> From: czerwonky@...> To: rhodes22-list@...> Subject: Re: [Rhodes22-list] Wind-induced noise in rigging/mast while docked> > All,> I had a chance to meet with Al yesterday after his late night arrival the night before. After checking out his 26' mast flute, I think we have come to a solution to his problem with unhappy neighbors. He seemed very happy with the service received from GBI. All in a day's work in the Rhoadie fleet!> Art> > -----Original Message-----> >From: keblinskas Keblinskas <keblinskas@...>> >Sent: May 14, 2008 2:48 PM> >To: rhodes22-list@...> >Subject: [Rhodes22-list] Wind-induced noise in rigging/mast while docked> >> >> >I keep my '97 Rhodes 22 on the Boca Ciega Bay of St. Petersburg, FL , docked on a lift, with mast> >up, at my back yard seawall, on the St. Pete Beach island side of the bay. The dock is fairly well> >sheltered around all points,except the North. The periodic winter cold fronts blow in from the North> >with 20+ knot gusty wind which produces a horrendous wailing howl in the rigging/mast.> > > >While docked, the boat's stern faces NE ; it seems to me the wailing noise must be caused by the wind entering the IMF's hollow mast groove and then exiting near the top producing the howl, like an organ pipe. I don't think the noise is from the shrouds.> > > >Please let me know if any of you have experienced or heard of someone else running into something> >similar, with any IMF system. If so, has anybody come up with a method to mitigate this problem,> >other than lowering the mast / derigging or docking the boat so that the stern (and mast groove)> >faces to leeward?> > > >Your comments will be very appreciated, so I thank you in advance,> > > >Al Keblinskas> >_________________________________________________________________> >Get Free (PRODUCT) RED™ Emoticons, Winks and Display Pics.> >http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008> >__________________________________________________> >Use Rhodes22-list@..., Help? www.rhodes22.org/list> > __________________________________________________> Use Rhodes22-list@..., Help? www.rhodes22.org/list
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