Date   

Re: [Amel Yacht Owners] Re: Globe Run Dry Impellers

Alan Leslie
 

Hi Alexandre,
I replaced the ONAN pump with a new Sherwood one piece cast (beautifully machined) pump, and I still have the  same problem.....it seems this is a well known issue with ONAN, there was a big discussion thread on Cruisers Forum about it.
How many actual hours ONAN running time did you have in the 8 / 10 month periods ?
Cheers
Alan
Elyse SM437


Re: [Amel Yacht Owners] Re: Globe Run Dry Impellers

Alexandre Uster von Baar
 

Hello Alan,

I used to have the same problem. After 8 months the impeller would lost is blade.
So Dec 2014 I cleaned the water pump, see pictures on the link below.
And 10 months later, preparing for a longer trip I decided to change the impeller and it looked like new, I could have use it longer.
so, in “my” case, it was the pump being dirty that created a faster than expected ware on the impeller.
http://nikimat.com/onan_water_pump_cleaning.html

Sincerely, Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico



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

On Wed, 6/8/16, divanz620@yahoo.fr [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: [Amel Yacht Owners] Re: Globe Run Dry Impellers
To: amelyachtowners@yahoogroups.com
Date: Wednesday, June 8, 2016, 2:51 PM


 









I changed the whole pump for a Sherwood one-piece
housing and I have used Globe Run Dry impellers on the Onan
with very little difference in longevity cf the standard
impeller...about 170 to 195 hours has been our run so
far...same issue, the blades come off and end up in the heat
exchanger...I have a couple of these blue fellas to use yet
and when they are done I will install the March centrifugal
pump I bought some time ago.I don't have
experience of the rubber separating itself from the
hub.CheersAlanElyse
SM$37









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Re: Globe Run Dry Impellers

Alan Leslie
 

I changed the whole pump for a Sherwood one-piece housing and I have used Globe Run Dry impellers on the Onan with very little difference in longevity cf the standard impeller...about 170 to 195 hours has been our run so far...same issue, the blades come off and end up in the heat exchanger...I have a couple of these blue fellas to use yet and when they are done I will install the March centrifugal pump I bought some time ago.
I don't have experience of the rubber separating itself from the hub.
Cheers
Alan
Elyse SM$37


Re: [Amel Yacht Owners] Re: Bow thruster

Bill & Judy Rouse <yahoogroups@...>
 

Correct Kent!

Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA Voice Mail

On Jun 8, 2016 8:01 AM, "Kent Robertson karkauai@... [amelyachtowners]" <amelyachtowners@...> wrote:
 

Bill, that lip seal 30 X 42 X 8
(now 29 X 42 X 8) is the one on the bow thruster by the prop, not the one in the hull where the bow thruster enters the hull.  A failure of the one by the prop would cause leakage of water into the oil, not into the boat.
Kent
SM 243
Kristy

On Jun 8, 2016, at 6:49 AM, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Five things:

Joel explained a drain tube that was added on SM hull number 400 and above. You have 278.

I believe you said that yours leaked without moving the boat. If so your bow is too heavy and too low in the water.

I believe the service intervals should be about every two years

You do not mention securing the bow thruster with the locking pin

Do you read the recent post whereby Amel recommends a slightly different size lip seal? It reads:
"2 weeks ago, I received many spare parts from Amel (La Rochelle), as I was labelling them I noted that the seal on the tufnol shaft bow thruster was 29 x 42 x 8. 

Thinking it was an error, I contacted Maud which just confirm that they have modified a little the diameters of the seal so that they are more water tight. 
Before it was 30 x 42 x 8 now it is 29 x 42 x 8 she added you won’t be able to put them by hand, but will need to grease and use a tool “emporte piece” in french." 

I believe that you need to address and/or understand all of the above.

Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA Voice Mail

 


.


Mizzen Roller Reefing

Derick Gates SM2K #400 Brava
 

Hi all,


I just have had the mizzen shaft become uncoupled from the roller reefing. The shaft can be pulled out about five inches, and then it will come no further.  How is this shaft normally attached to the gear box?  I see a hex headed bolt on the inside of the shaft.  I assume that this bolt attaches the 90 degree bevel gear to the shaft, but then what connects the shaft to the gear box?


Has anyone taken this all apart before?


I will post a picture of the situation.


Derick Gates

SM2K#400 Brava


Re: bow thruster service. Problem

rossienio@...
 

Well Craig, i'll do that. Could you also give me directions on my request of 3 june (no.27337) relating to the new charger installation and earth connection? I'm sorry i could not meet u in Greece along with Attilio Siviero (Sisila) few years ago. Greetings. enio  


Re: [Amel Yacht Owners] Globe Run Dry Impellers

Alexandre Uster von Baar
 

Thanks for the info Bill,

How long did they last before failing?

Sincerely, Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico



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

On Wed, 6/8/16, yahoogroups@svbebe.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: [Amel Yacht Owners] Globe Run Dry Impellers
To: amelyachtowners@yahoogroups.com
Date: Wednesday, June 8, 2016, 9:06 AM


 









I normally stay well clear of products
that are hyped as better and different than OEM equipment
parts.

Globe Run Dry
Impellers is one of those products.
But, I tried the famous
Globe Impeller in the Onan generator. Results were that 2
out of 2 impellers failed when the flexible part separated
from the metal hub.
I added a photo to the
MDKAV folder.
Best,
BillBeBe
#387Currently
Grenada 









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Globe Run Dry Impellers

yahoogroups@...
 

I normally stay well clear of products that are hyped as better and different than OEM equipment parts.

Globe Run Dry Impellers is one of those products.


But, I tried the famous Globe Impeller in the Onan generator. Results were that 2 out of 2 impellers failed when the flexible part separated from the metal hub.


I added a photo to the MDKAV folder.


Best,


Bill

BeBe #387

Currently Grenada

 


Re: [Amel Yacht Owners] Re: Bow thruster

Mark Erdos
 

Thanks Bill. This make sense now.

 

 

 

With best regards,

 

Mark

 

Super Maramu 2000

Hull #275

www.creampuff.us

Currently cruising:  Tampa Bay for hurricane season

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, June 08, 2016 9:04 AM
To: amelyachtowners@...
Subject: RE: [Amel Yacht Owners] Re: Bow thruster

 

 

Mark,

 

This seems to have confused a lot of people commenting here.

 

The changed seal is NOT the seal on the vertical shaft that keeps water out of the boat.  It IS the seal that keeps water out of the oil out in the gearbox. It is located on the horizontal shaft that the prop itself attaches to.

 

Bill Kinney

Harmonie, SM160

Port Canaveral, Florida.

 


Re: [Amel Yacht Owners] Re: Bow thruster

greatketch@...
 

Mark,

This seems to have confused a lot of people commenting here.

The changed seal is NOT the seal on the vertical shaft that keeps water out of the boat.  It IS the seal that keeps water out of the oil out in the gearbox. It is located on the horizontal shaft that the prop itself attaches to.

Bill Kinney
Harmonie, SM160
Port Canaveral, Florida.


Re: [Amel Yacht Owners] Re: Bow thruster

Mark Erdos
 

I am a little confused about the mentioned tool to put on the new lip seals. Isn’t this seal adhered to the inside of the vessel before pulling up the shaft of the bow thruster into the motor? How does this tool work?

 

 

 

With best regards,

 

Mark

 

Super Maramu 2000

Hull #275

www.creampuff.us

Currently cruising:  Tampa Bay for huricane season

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, June 08, 2016 6:50 AM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Re: Bow thruster

 

 

Five things:

Joel explained a drain tube that was added on SM hull number 400 and above. You have 278.

I believe you said that yours leaked without moving the boat. If so your bow is too heavy and too low in the water.

I believe the service intervals should be about every two years

You do not mention securing the bow thruster with the locking pin

Do you read the recent post whereby Amel recommends a slightly different size lip seal? It reads:
"2 weeks ago, I received many spare parts from Amel (La Rochelle), as I was labelling them I noted that the seal on the tufnol shaft bow thruster was 29 x 42 x 8. 

Thinking it was an error, I contacted Maud which just confirm that they have modified a little the diameters of the seal so that they are more water tight. 
Before it was 30 x 42 x 8 now it is 29 x 42 x 8 she added you won’t be able to put them by hand, but will need to grease and use a tool “emporte piece” in french." 

I believe that you need to address and/or understand all of the above.

Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA Voice Mail

 

Just a thought. When sailing, do you secure the bowtruster with the stainless steel pin?

 

The times we have leakage is when we forget to secure it with the pin.

 

Regards

Ann-Sofie

S/Y Lady Annila, SM 232

In Portimao, Portugal

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

Facebook: Sailinglife.se

Twitter, Instagram: sailinglifese

Skickat från min iPad


8 juni 2016 kl. 05:20 skrev jvenegas@... [amelyachtowners] <amelyachtowners@...>:

 

Eric,

 

The leak is through the lip seal.  It is very clear every time the bow goes under water.  It is a recurrent and frustrating problem.

 

I will be around this weekend if the weather is not good.  Otherwise may be heading to Glaucester.  When are you coming up exactly? 

 

Let me know and I would love to chat about your experience in Santa Marta.  We went by Santa Marta and Cartagena 3 years ago.  No bow thruster leak but only because I had clamped the extra seal.

 

Jose 

Ipanema SM278

Boston


Re: bow thruster service. Problem

Craig Briggs
 

Holding some force on the chain wrench while you tap is a good technique. Just don't beat it with the hammer too hard.
Good luck


Re: [Amel Yacht Owners] Re: Bow thruster

karkauai
 

Bill, that lip seal 30 X 42 X 8
(now 29 X 42 X 8) is the one on the bow thruster by the prop, not the one in the hull where the bow thruster enters the hull.  A failure of the one by the prop would cause leakage of water into the oil, not into the boat.
Kent
SM 243
Kristy

On Jun 8, 2016, at 6:49 AM, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Five things:

Joel explained a drain tube that was added on SM hull number 400 and above. You have 278.

I believe you said that yours leaked without moving the boat. If so your bow is too heavy and too low in the water.

I believe the service intervals should be about every two years

You do not mention securing the bow thruster with the locking pin

Do you read the recent post whereby Amel recommends a slightly different size lip seal? It reads:
"2 weeks ago, I received many spare parts from Amel (La Rochelle), as I was labelling them I noted that the seal on the tufnol shaft bow thruster was 29 x 42 x 8. 

Thinking it was an error, I contacted Maud which just confirm that they have modified a little the diameters of the seal so that they are more water tight. 
Before it was 30 x 42 x 8 now it is 29 x 42 x 8 she added you won’t be able to put them by hand, but will need to grease and use a tool “emporte piece” in french." 

I believe that you need to address and/or understand all of the above.

Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA Voice Mail

 


.


Re: [Amel Yacht Owners] Bow thruster

Andrew & Kate Lamb
 

This will not help you Jose but I am going to mention the problems I had with my bow thruster for the benefit of the forum.

 

When we first bought the boat and were “virgin” Amel owner we did have quite a bit of leaking from the bow thruster on our first voyage, when we were crossing the Gulf de Lion.

 

Since then we have replaced the seals and foot oil each year and have adjusted the rigging to ensure the foot is always pulled up tightly against the seals, when the thruster is in the up position. However we have had a lot of problems both with the raising and lowering mechanism which resulted in us changing the linear actuator 2 years ago, changing the sensors and rebuilding the control box. This part of the system now seems to be working very well.  Having thought our problems were over, last year the bow thruster main motor stopped functioning – there turned out to be issues with the connections of the coils in the armature and commutator - I made some fixes to this (documented on this site) and the motor started functioning again. It has been ok since until last week when the motor failed again.

 

I contacted Maud at Amel (whom incidentally I have always found to be very helpful)  but she told me that these motors are no longer manufactured and at the moment they have no solution to offer either in terms of replacement or reparation. I have found a local motor engineering workshop near Perpignan who reckon they should be able to repair the motor, by changing the commutator and possibly some coils – however if they are unable to repair the motor then we have some serious thinking to do to figure out how we can get a working bow thruster again and we may have to even consider a more “conventional” approach to this. It is sobering to think that increasingly we may find that when parts of our boats malfunction that we may not be able to get replacements.

 

Andrew

 

Ronpische

SM 472

Canet–en-Roussillon

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: 8 June 2016 13:24
To: amelyachtowners@...
Subject: RE: [Amel Yacht Owners] Bow thruster

 

 

Good morning Jose,

Did “Amel” recommended to add a 3rd seal???

Could you please send me picture of the “system with a clamp” that you develop? I was thinking of a similar device.

I own my vessel since 2012 and the bow thruster also start leaking after 1 year of use (even after being serviced by Amel Martinique with a new bow thruster foot).
Consequently, I checked the bilge near the forward head every time I sail and I also installed a high water alarm and bilge pump.
http://www.nikimat.com/bilge_pump_high_water_alarm_bow_thruster.html

Every year when do the overhaul, the foam look good (but I still change them). I often suspect this is coming from the seal.
It seems the problem start if I accidentally motor over 2.5 kt (bow thruster down) which is some time unavoidable with 2 kt current.

I was also wondering if this was because of the rigging which I have not redone, but I just did the overhaul 2 months ago (and not the rigging) and no leak now even in 9ft seas.

My latest thought is the “contact cement” which could degrades after 1 year, but I don’t know for sure.

Our hull number are not far apart, may be there was a slight different design at that time.

Sincerely, Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico

--------------------------------------------
On Tue, 6/7/16, jvenegas@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: RE: [Amel Yacht Owners] Bow thruster
To: amelyachtowners@...
Date: Tuesday, June 7, 2016, 9:48 PM


 









Joel,I checked in my boat and as you
mention, there is no draining tube out of the bow thruster
compartment and that explain why we have been frustrated
drying up with a sponge the water that regularly collects
from the leaking bow thruster seals 
Since I bought my boat, I have
serviced the bow thruster and replaced all seals in my SM278
several times (5 in 6 years) .   In all cases a leak
developed around the lip seal soon after service. In fact,
just after I bought the boat, the previous owner told me he
had just serviced the thruster.  I was really shocked when
I found the the compartment filled with water after just one
overnight from Florida to Savanna.  I proceeded to replace
all seals following AMEL instructions and the leak stopped
for about a year.  That was the longest period without a
leak and the start of my saga.
For the second to last service I
spoke with AMEL in France and was recommended to add a third
foam seal to the thruster assembly but that only eliminated
the leak for a few weeks.  As I was about to cross the
Atlantic, I developed a system with a clamp that I secured
around the shaft and pushed down to create a good seal.
 That worked well for the one year trip from Boston to
Spain, Caribe, Santa Marta, Fort Lauderdale and back to
Boston.  Although my solution is good and I recommend it to
anybody doing long crossings,  as I returned to Boston it
became a nuisance to have to clamp and unclamp the thruster
every time we left the marina.  So, taking
advantage that I was  giving Ipanema a new bottom paint las
week, I  serviced the bow thruster system for the last time
and carefully cleaned the surfaces and changed again all the
foam and lip seals and I added two extra turns to the top
screw to bring the motor up as much as It was
possible. Sadly, on my return trip from
Glaucester to Boston under moderate waves I noted again a
leak around the lip seal (brand new) in spite of the fact
that I had to add manually quite a bit of extra tension to
the cable in order to align the holes to pass the securing
pin.  
Do you or
anybody in this group have an idea of why is this leak
persisting in my boat? 
I believe that the bottom two foam
seals should be enough to completely seal the system and the
lip seal should only work during the short period of time
deploying or retracting the bow thruster.  So if they are
not preventing a leak, it must be that in my boat poor
alignment between the sealing surfaces may have developed or
becomes important when tension is added to the cable to
increase the sealing force.
Any suggestion about how to fix this
problem.  It must not be very common as few people complain
about it in this forum, but it may have been enough of a
nuisance for Amel to add the tubbing/valve to isolate and
send the leaking water  to the main bilge. 
Has any one retrofitted such a
tubbing/valve in SM2K earlier than the redlined
version? 
Jose
VenegasIpanema SM2K 278 Constitution
Marina, Boston MA



Re: [Amel Yacht Owners] Bow thruster

Alexandre Uster von Baar
 

Good morning Jose,

Did “Amel” recommended to add a 3rd seal???

Could you please send me picture of the “system with a clamp” that you develop? I was thinking of a similar device.

I own my vessel since 2012 and the bow thruster also start leaking after 1 year of use (even after being serviced by Amel Martinique with a new bow thruster foot).
Consequently, I checked the bilge near the forward head every time I sail and I also installed a high water alarm and bilge pump.
http://www.nikimat.com/bilge_pump_high_water_alarm_bow_thruster.html

Every year when do the overhaul, the foam look good (but I still change them). I often suspect this is coming from the seal.
It seems the problem start if I accidentally motor over 2.5 kt (bow thruster down) which is some time unavoidable with 2 kt current.

I was also wondering if this was because of the rigging which I have not redone, but I just did the overhaul 2 months ago (and not the rigging) and no leak now even in 9ft seas.

My latest thought is the “contact cement” which could degrades after 1 year, but I don’t know for sure.

Our hull number are not far apart, may be there was a slight different design at that time.

Sincerely, Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico



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

On Tue, 6/7/16, jvenegas@alum.mit.edu [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: RE: [Amel Yacht Owners] Bow thruster
To: amelyachtowners@yahoogroups.com
Date: Tuesday, June 7, 2016, 9:48 PM


 









Joel,I checked in my boat and as you
mention, there is no draining tube out of the bow thruster
compartment and that explain why we have been frustrated
drying up with a sponge the water that regularly collects
from the leaking bow thruster seals 
Since I bought my boat, I have
serviced the bow thruster and replaced all seals in my SM278
several times (5 in 6 years) .   In all cases a leak
developed around the lip seal soon after service. In fact,
just after I bought the boat, the previous owner told me he
had just serviced the thruster.  I was really shocked when
I found the the compartment filled with water after just one
overnight from Florida to Savanna.  I proceeded to replace
all seals following AMEL instructions and the leak stopped
for about a year.  That was the longest period without a
leak and the start of my saga.
For the second to last service I
spoke with AMEL in France and was recommended to add a third
foam seal to the thruster assembly but that only eliminated
the leak for a few weeks.  As I was about to cross the
Atlantic, I developed a system with a clamp that I secured
around the shaft and pushed down to create a good seal.
 That worked well for the one year trip from Boston to
Spain, Caribe, Santa Marta, Fort Lauderdale and back to
Boston.  Although my solution is good and I recommend it to
anybody doing long crossings,  as I returned to Boston it
became a nuisance to have to clamp and unclamp the thruster
every time we left the marina.  So, taking
advantage that I was  giving Ipanema a new bottom paint las
week, I  serviced the bow thruster system for the last time
and carefully cleaned the surfaces and changed again all the
foam and lip seals and I added two extra turns to the top
screw to bring the motor up as much as It was
possible. Sadly, on my return trip from
Glaucester to Boston under moderate waves I noted again a
leak around the lip seal (brand new) in spite of the fact
that I had to add manually quite a bit of extra tension to
the cable in order to align the holes to pass the securing
pin.  
Do you or
anybody in this group have an idea of why is this leak
persisting in my boat? 
I believe that the bottom two foam
seals should be enough to completely seal the system and the
lip seal should only work during the short period of time
deploying or retracting the bow thruster.  So if they are
not preventing a leak, it must be that in my boat poor
alignment between the sealing surfaces may have developed or
becomes important when tension is added to the cable to
increase the sealing force.
Any suggestion about how to fix this
problem.  It must not be very common as few people complain
about it in this forum, but it may have been enough of a
nuisance for Amel to add the tubbing/valve to isolate and
send the leaking water  to the main bilge. 
Has any one retrofitted such a
tubbing/valve in SM2K earlier than the redlined
version? 
Jose
VenegasIpanema SM2K 278 Constitution
Marina, Boston MA


Re: [Amel Yacht Owners] Re: Bow thruster

Bill & Judy Rouse <yahoogroups@...>
 

Five things:

Joel explained a drain tube that was added on SM hull number 400 and above. You have 278.

I believe you said that yours leaked without moving the boat. If so your bow is too heavy and too low in the water.

I believe the service intervals should be about every two years

You do not mention securing the bow thruster with the locking pin

Do you read the recent post whereby Amel recommends a slightly different size lip seal? It reads:
"2 weeks ago, I received many spare parts from Amel (La Rochelle), as I was labelling them I noted that the seal on the tufnol shaft bow thruster was 29 x 42 x 8. 

Thinking it was an error, I contacted Maud which just confirm that they have modified a little the diameters of the seal so that they are more water tight. 
Before it was 30 x 42 x 8 now it is 29 x 42 x 8 she added you won’t be able to put them by hand, but will need to grease and use a tool “emporte piece” in french." 

I believe that you need to address and/or understand all of the above.

Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA Voice Mail

 

Just a thought. When sailing, do you secure the bowtruster with the stainless steel pin?

The times we have leakage is when we forget to secure it with the pin.

Regards
Ann-Sofie
S/Y Lady Annila, SM 232
In Portimao, Portugal
------------------------------------
Facebook: Sailinglife.se
Twitter, Instagram: sailinglifese

Skickat från min iPad

8 juni 2016 kl. 05:20 skrev jvenegas@... [amelyachtowners] <amelyachtowners@...>:

 

Eric,


The leak is through the lip seal.  It is very clear every time the bow goes under water.  It is a recurrent and frustrating problem.

I will be around this weekend if the weather is not good.  Otherwise may be heading to Glaucester.  When are you coming up exactly? 

Let me know and I would love to chat about your experience in Santa Marta.  We went by Santa Marta and Cartagena 3 years ago.  No bow thruster leak but only because I had clamped the extra seal.

Jose 
Ipanema SM278
Boston


Re: [Amel Yacht Owners] Re: Bow thruster

Ann-Sofie Svanberg <kanalmamman@...>
 

Just a thought. When sailing, do you secure the bowtruster with the stainless steel pin?

The times we have leakage is when we forget to secure it with the pin.

Regards
Ann-Sofie
S/Y Lady Annila, SM 232
In Portimao, Portugal
------------------------------------
Facebook: Sailinglife.se
Twitter, Instagram: sailinglifese

Skickat från min iPad

8 juni 2016 kl. 05:20 skrev jvenegas@... [amelyachtowners] <amelyachtowners@...>:

 

Eric,


The leak is through the lip seal.  It is very clear every time the bow goes under water.  It is a recurrent and frustrating problem.

I will be around this weekend if the weather is not good.  Otherwise may be heading to Glaucester.  When are you coming up exactly? 

Let me know and I would love to chat about your experience in Santa Marta.  We went by Santa Marta and Cartagena 3 years ago.  No bow thruster leak but only because I had clamped the extra seal.

Jose 
Ipanema SM278
Boston


Re: [Amel Yacht Owners] Re: Bow thruster

eric freedman
 

Hi Jose,

My email is Kimberlite@....

Let’s chat there. I could drop by Saturday afternoon.

Fair Winds

Eric

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Wednesday, June 08, 2016 12:19 AM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Bow thruster

 

 

Eric,

 

The leak is through the lip seal.  It is very clear every time the bow goes under water.  It is a recurrent and frustrating problem.

 

I will be around this weekend if the weather is not good.  Otherwise may be heading to Glaucester.  When are you coming up exactly? 

 

Let me know and I would love to chat about your experience in Santa Marta.  We went by Santa Marta and Cartagena 3 years ago.  No bow thruster leak but only because I had clamped the extra seal.

 

Jose 

Ipanema SM278

Boston


Re: Bow thruster

Jose Venegas
 

Eric,

The leak is through the lip seal.  It is very clear every time the bow goes under water.  It is a recurrent and frustrating problem.

I will be around this weekend if the weather is not good.  Otherwise may be heading to Glaucester.  When are you coming up exactly? 

Let me know and I would love to chat about your experience in Santa Marta.  We went by Santa Marta and Cartagena 3 years ago.  No bow thruster leak but only because I had clamped the extra seal.

Jose 
Ipanema SM278
Boston


Re: [Amel Yacht Owners] Bow thruster

eric freedman
 

Hola Jose,

Exactly where is the bow thruster leaking?

Is it around the large lip seal and the foam disks, or is it coming up the bow thruster and leaking oily water.?Your problem seems somewhat isolated in this forum. Most people who rebuild the thruster have no further problems. 2 months ago we beat into 35-50 knots for 9 days from Santa Marta Colombia to Guadeloupe and not a drop of water entered.

Do you plan on being in Boston this weekend. I am headed up there by car on business and possibly we can meet.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Tuesday, June 07, 2016 10:48 PM
To: amelyachtowners@...
Subject: RE: [Amel Yacht Owners] Bow thruster

 

 

Joel,

I checked in my boat and as you mention, there is no draining tube out of the bow thruster compartment and that explain why we have been frustrated drying up with a sponge the water that regularly collects from the leaking bow thruster seals 

 

Since I bought my boat, I have serviced the bow thruster and replaced all seals in my SM278 several times (5 in 6 years) .   In all cases a leak developed around the lip seal soon after service. In fact, just after I bought the boat, the previous owner told me he had just serviced the thruster.  I was really shocked when I found the the compartment filled with water after just one overnight from Florida to Savanna.  I proceeded to replace all seals following AMEL instructions and the leak stopped for about a year.  That was the longest period without a leak and the start of my saga.

 

For the second to last service I spoke with AMEL in France and was recommended to add a third foam seal to the thruster assembly but that only eliminated the leak for a few weeks.  As I was about to cross the Atlantic, I developed a system with a clamp that I secured around the shaft and pushed down to create a good seal.  That worked well for the one year trip from Boston to Spain, Caribe, Santa Marta, Fort Lauderdale and back to Boston.  Although my solution is good and I recommend it to anybody doing long crossings,  as I returned to Boston it became a nuisance to have to clamp and unclamp the thruster every time we left the marina.  

So, taking advantage that I was  giving Ipanema a new bottom paint las week, I  serviced the bow thruster system for the last time and carefully cleaned the surfaces and changed again all the foam and lip seals and I added two extra turns to the top screw to bring the motor up as much as It was possible. 

Sadly, on my return trip from Glaucester to Boston under moderate waves I noted again a leak around the lip seal (brand new) in spite of the fact that I had to add manually quite a bit of extra tension to the cable in order to align the holes to pass the securing pin.  

 

Do you or anybody in this group have an idea of why is this leak persisting in my boat? 

 

I believe that the bottom two foam seals should be enough to completely seal the system and the lip seal should only work during the short period of time deploying or retracting the bow thruster.  So if they are not preventing a leak, it must be that in my boat poor alignment between the sealing surfaces may have developed or becomes important when tension is added to the cable to increase the sealing force.

 

Any suggestion about how to fix this problem.  It must not be very common as few people complain about it in this forum, but it may have been enough of a nuisance for Amel to add the tubbing/valve to isolate and send the leaking water  to the main bilge. 

 

Has any one retrofitted such a tubbing/valve in SM2K earlier than the redlined version? 

 

Jose Venegas

Ipanema SM2K 278 

Constitution Marina, Boston MA