[Amel] B&G Sonic Speed sensor and "the barnacle"


David Mackintosh <sv.highland.fling@...>
 

at a wild guess it is probably a lens/sensor protector

regards

David

On 8 August 2010 13:54, Judy and Bill aboard SV BeBe <yahoogroups@svbebe.com
wrote:


Boat stories can really be unreal. Here is one of those...

A short time ago we noticed that the sonic speed was not working. I
suspected fouling on the sensors. Today we were preparing to leave for
Singapore and I put on scuba gear to clean the propeller and check the hull.
I found only a single barnacle on the hull...it was on the rear facing sonic
speed sensor. I gripped the barnacle and pulled. Something came off with the
barnacle...see photo at
http://groups.yahoo.com/group/amelyachtowners/photos/album/1217837093/pic/534911356/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc

I do not know yet if the speed sensor is working because we have not left
the dock, but the red light on the sonic speed computer is on, indicating
that it is working; and the Hydra FFD is showing several 10ths of a knot
which is likely the tidal drift.

I am not sure what I am dealing with here. Can anyone tell me where the
sensor is accessed from inside the boat? Is this piece a piece of the
sensor, or some sort of plug?

Any input and suggestions would be appreciated.

Best,

Bill
s/v BeBe, SM2k, #387
Currently Malaysia



Richard03801 <richard03801@...>
 

Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller

On Aug 8, 2010, at 9:44, David Mackintosh <sv.highland.fling@gmail.com> wrote:

at a wild guess it is probably a lens/sensor protector

regards

David

On 8 August 2010 13:54, Judy and Bill aboard SV BeBe <yahoogroups@svbebe.com
wrote:


Boat stories can really be unreal. Here is one of those...

A short time ago we noticed that the sonic speed was not working. I
suspected fouling on the sensors. Today we were preparing to leave for
Singapore and I put on scuba gear to clean the propeller and check the hull.
I found only a single barnacle on the hull...it was on the rear facing sonic
speed sensor. I gripped the barnacle and pulled. Something came off with the
barnacle...see photo at
http://groups.yahoo.com/group/amelyachtowners/photos/album/1217837093/pic/534911356/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc

I do not know yet if the speed sensor is working because we have not left
the dock, but the red light on the sonic speed computer is on, indicating
that it is working; and the Hydra FFD is showing several 10ths of a knot
which is likely the tidal drift.

I am not sure what I am dealing with here. Can anyone tell me where the
sensor is accessed from inside the boat? Is this piece a piece of the
sensor, or some sort of plug?

Any input and suggestions would be appreciated.

Best,

Bill
s/v BeBe, SM2k, #387
Currently Malaysia







------------------------------------

Yahoo! Groups Links



Giovanni TESTA
 

Hi Bill,
go to http://www.bandg.com/upload/BandG/Documents/Manuals/sonicinstall.pdf
It is a Manual we have not normally on board. There is a sketch of the sensor and of its neoprene cap.
Tomorrow - today is Sunday- I'll call to a local dealer I know for help.
All the best
Gianni
sv EUTIKIA

----- Original Message -----
From: Richard03801
To: amelyachtowners@yahoogroups.com
Sent: Sunday, August 08, 2010 5:03 PM
Subject: Re: [Amel] B&G Sonic Speed sensor and "the barnacle"



Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller

On Aug 8, 2010, at 9:44, David Mackintosh <sv.highland.fling@gmail.com> wrote:

> at a wild guess it is probably a lens/sensor protector
>
> regards
>
> David
>
> On 8 August 2010 13:54, Judy and Bill aboard SV BeBe <yahoogroups@svbebe.com
>> wrote:
>
>>
>>
>> Boat stories can really be unreal. Here is one of those...
>>
>> A short time ago we noticed that the sonic speed was not working. I
>> suspected fouling on the sensors. Today we were preparing to leave for
>> Singapore and I put on scuba gear to clean the propeller and check the hull.
>> I found only a single barnacle on the hull...it was on the rear facing sonic
>> speed sensor. I gripped the barnacle and pulled. Something came off with the
>> barnacle...see photo at
>> http://groups.yahoo.com/group/amelyachtowners/photos/album/1217837093/pic/534911356/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
>>
>> I do not know yet if the speed sensor is working because we have not left
>> the dock, but the red light on the sonic speed computer is on, indicating
>> that it is working; and the Hydra FFD is showing several 10ths of a knot
>> which is likely the tidal drift.
>>
>> I am not sure what I am dealing with here. Can anyone tell me where the
>> sensor is accessed from inside the boat? Is this piece a piece of the
>> sensor, or some sort of plug?
>>
>> Any input and suggestions would be appreciated.
>>
>> Best,
>>
>> Bill
>> s/v BeBe, SM2k, #387
>> Currently Malaysia
>>
>>
>>
>
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>





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Judy and Bill aboard SV BeBe <yahoogroups@...>
 

Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@...> wrote:

Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller


Judy and Bill aboard SV BeBe <yahoogroups@...>
 

FYI, I received the following email from Boris COMPAGNON at Amel After Service:

"The rubber bumper you have in hands is just a protection cover of the sensor. If this not in place, you may find the sensor disturbed while sailing...The informartions may be wrong.

You can reglue it.

There is no access for this sensor from inside the boat."

Best,

Bill
s/v BeBe, SM2k, #387
Currently Malaysia

--- In amelyachtowners@yahoogroups.com, "Judy and Bill aboard SV BeBe" <yahoogroups@...> wrote:




Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@> wrote:

Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller


Richard03801 <richard03801@...>
 

Bill in the forward cabin there is a through hull sending unit for the speed sensor
You can remove it ( be sure to have a wood plug to fit the hole) and replace the unit. I simply don't know If the "seawater" sensor comes out with it. I seem to "think and that is always dangerous" it does. The other question can you get the needed replacement parts locally I think Amel is closed for summer French holidays. I will see if I can find a solution here in Annapolis. There
Must be a BG dealer here that knows.
Regards
Richard Piller

On Aug 8, 2010, at 20:15, "Judy and Bill aboard SV BeBe" <yahoogroups@svbebe.com> wrote:



Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@...> wrote:

Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller


[Non-text portions of this message have been removed]


Richard03801 <richard03801@...>
 

I guess that settles that so much for the eyeball test on this one.

Regards
Richard Piller

On Aug 9, 2010, at 3:07, "Judy and Bill aboard SV BeBe" <yahoogroups@svbebe.com> wrote:

FYI, I received the following email from Boris COMPAGNON at Amel After Service:

"The rubber bumper you have in hands is just a protection cover of the sensor. If this not in place, you may find the sensor disturbed while sailing...The informartions may be wrong.

You can reglue it.

There is no access for this sensor from inside the boat."

Best,

Bill
s/v BeBe, SM2k, #387
Currently Malaysia

--- In amelyachtowners@yahoogroups.com, "Judy and Bill aboard SV BeBe" <yahoogroups@...> wrote:




Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@> wrote:

Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
Regards
Richard Piller


Giovanni TESTA
 

Bill,
I have contacted the main B&G support in Viareggio.
They told me that the neoprene extension is mainly for protection of the transducer.
For now you can sail but you have to keep it cleaned, obviously with great attention.
The technician was working and sailing out of laboratory...in these days there is a lot of work, but he told me that as soon as possible, with the trasducer in his hands, he could check how to re-attach the extension under water..if possible.
Ciao
Gianni

----- Original Message -----
From: Judy and Bill aboard SV BeBe
To: amelyachtowners@yahoogroups.com
Sent: Monday, August 09, 2010 2:15 AM
Subject: Re: [Amel] B&G Sonic Speed sensor and "the barnacle"





Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@...> wrote:
>
> Bill this looks like the lens and and cover. Can or will you please confirm that your photo is from the "upper" hull mount sensor and not the keel unit. I think if it is the upper you can access-it from the forward cabin. If it is the keel you most likely have a big job on your hands. We have an SM and getting to the keel unit would be a major pain to the point that I'd consider putting in a new speed and water temp unit in place of the forward sensor. I know it's not Amel but given your current location well we all do what we have to do. In any case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and deal with later. Good luck.
> Regards
> Richard Piller
>
>






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Belit Bh <belitbh@...>
 

Hi,

We also have a small problem with the same sensor (posted few weeks ago), and
was actualy wonderring: why is it needed at all, as most of us have more then
one GPS aboard which indicates the speed more reliebly? I might be giving up too
easy, but is there any real loss by just forgetting about it?




________________________________
From: Giovanni Testa <gtesta23@tin.it>
To: amelyachtowners@yahoogroups.com
Sent: Mon, August 9, 2010 10:20:59 AM
Subject: Re: [Amel] B&G Sonic Speed sensor and "the barnacle"


Bill,
I have contacted the main B&G support in Viareggio.
They told me that the neoprene extension is mainly for protection of the
transducer.
For now you can sail but you have to keep it cleaned, obviously with great
attention.
The technician was working and sailing out of laboratory...in these days there
is a lot of work, but he told me that as soon as possible, with the trasducer in
his hands, he could check how to re-attach the extension under water..if
possible.
Ciao
Gianni
----- Original Message -----
From: Judy and Bill aboard SV BeBe
To: amelyachtowners@yahoogroups.com
Sent: Monday, August 09, 2010 2:15 AM
Subject: Re: [Amel] B&G Sonic Speed sensor and "the barnacle"

Richard,

It is the upper hull-mount sensor i.e the rear facing sensor.

Bill
s/v BeBe

--- In amelyachtowners@yahoogroups.com, Richard03801 <richard03801@...> wrote:

Bill this looks like the lens and and cover. Can or will you please confirm
that your photo is from the "upper" hull mount sensor and not the keel unit. I
think if it is the upper you can access-it from the forward cabin. If it is the
keel you most likely have a big job on your hands. We have an SM and getting to
the keel unit would be a major pain to the point that I'd consider putting in a
new speed and water temp unit in place of the forward sensor. I know it's not
Amel but given your current location well we all do what we have to do. In any
case we would NOT go to sea w/0 a fix or at least fast expoxie on the hole and
deal with later. Good luck.

Regards
Richard Piller

----------------------------------------------------------

Nessun virus nel messaggio in arrivo.
Controllato da AVG - www.avg.com
Versione: 8.5.441 / Database dei virus: 271.1.1/3056 - Data di rilascio:
08/07/10 06:28:00









[Non-text portions of this message have been removed]


Judy and Bill aboard SV BeBe <yahoogroups@...>
 

We find it good to know the effect of the current on our SOG. GPS gives us accurate speed over ground (SOG); sonic speed gives us accurate speed through the water...the difference is the result of the positive or negative current. It is a quick and easy solution to know why the SOG is as bad, or as good, as indicated in SOG.

Armed with this information, you can make decisions that can effect your arrival time...or, at a minimum, it will give you something to discuss with your crew.;)

Best,

Bill
s/v BeBe, SM2k, #387
Currently Singapore

--- In amelyachtowners@yahoogroups.com, Belit Bh <belitbh@...> wrote:

Hi,

We also have a small problem with the same sensor (posted few weeks ago), and
was actualy wonderring: why is it needed at all, as most of us have more then
one GPS aboard which indicates the speed more reliebly? I might be giving up too
easy, but is there any real loss by just forgetting about it?


Belit Bh <belitbh@...>
 

Thanks Judy and Bill, this is definitely one good use for this.





________________________________
From: Judy and Bill aboard SV BeBe <yahoogroups@svbebe.com>
To: amelyachtowners@yahoogroups.com
Sent: Sat, August 14, 2010 8:51:28 AM
Subject: Re: [Amel] B&G Sonic Speed sensor and "the barnacle"


We find it good to know the effect of the current on our SOG. GPS gives us
accurate speed over ground (SOG); sonic speed gives us accurate speed through
the water...the difference is the result of the positive or negative current.
It is a quick and easy solution to know why the SOG is as bad, or as good, as
indicated in SOG.


Armed with this information, you can make decisions that can effect your arrival
time...or, at a minimum, it will give you something to discuss with your crew.;)

Best,

Bill
s/v BeBe, SM2k, #387
Currently Singapore

--- In amelyachtowners@yahoogroups.com, Belit Bh <belitbh@...> wrote:

Hi,

We also have a small problem with the same sensor (posted few weeks ago), and
was actualy wonderring: why is it needed at all, as most of us have more then
one GPS aboard which indicates the speed more reliebly? I might be giving up
too

easy, but is there any real loss by just forgetting about it?






[Non-text portions of this message have been removed]