Date   
Re: [Amel Yacht Owners] TV

Stefano Biffi
 

Thanks ALL for the tips. I'll work for a new Tv.
Stefano

Il giorno 20/dic/2015, alle ore 12:03, "'Jacques Paulus' jacquesetannick.paulus@... [amelyachtowners]" <amelyachtowners@...> ha scritto:

 

We live on board. So, TV is important for us.

We installed 2 TVs with DVD readers. That’s the easy part. For an easy installation, you just need to look for TVs you can connect on the 12V circuit of the boat.

The difficult part was to find a good solution to catch TV everywhere (there are some places where it is really very hard).

The first antenna is an omnidirectionnal antenna from Glomex, installed on top of the mizzen mast. It is connected to a splitter to distribute the signal to the 2 TVs. Good results, particularly when the boat is moving, at anchor for example. This is the minimal installation you can see everywhere.

For difficult places, we also installed a directional antenna on the arch supporting the solar panels. But the boat may not move è excellent results in marinas but you catch only local TV chains.

And, last but not least, we also have a parabolic satellite antenna to put on a fixed part on earth for wintering in marinas. This request also a satellite decoder, working on 220V, available in the marinas or via an inverter. Excellent results in marinas, with hundreds of TV chains from all over the world, depending on the contract you choose to work with the decoder.

 

Jacques et Annick Paulus

 

rue de Saint-Ghislain 15 B207                              Bateau Paranos

1348 Louvain-la-Neuve                                          Capitainerie de Saint-Mandrier
Mobile Jacques: +32 495 20 10 54                      2, quai Séverine

Mobile Annick: +32 498 52 78 31                        83430 Saint-Mandrier

Mobile en France: 06 10 57 02 90                       France

Mail: jacquespaulus@...                       

           

 

De : amelyachtowners@... [mailto:amelyachtowners@...]
Envoyé : dimanche 20 décembre 2015 11:25
À : amelyachtowners@...
Objet : Re: [Amel Yacht Owners] TV

 

 

We just have a 20" LED TV screen with inbuilt DVD player, in the place of the old TV...we don't watch TV

Cheers

Alan

Elyse SM437




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L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
www.avast.com


Re: [Amel Yacht Owners] TV

Jacques Paulus <jacquesetannick.paulus@...>
 

We live on board. So, TV is important for us.

We installed 2 TVs with DVD readers. That’s the easy part. For an easy installation, you just need to look for TVs you can connect on the 12V circuit of the boat.

The difficult part was to find a good solution to catch TV everywhere (there are some places where it is really very hard).

The first antenna is an omnidirectionnal antenna from Glomex, installed on top of the mizzen mast. It is connected to a splitter to distribute the signal to the 2 TVs. Good results, particularly when the boat is moving, at anchor for example. This is the minimal installation you can see everywhere.

For difficult places, we also installed a directional antenna on the arch supporting the solar panels. But the boat may not move è excellent results in marinas but you catch only local TV chains.

And, last but not least, we also have a parabolic satellite antenna to put on a fixed part on earth for wintering in marinas. This request also a satellite decoder, working on 220V, available in the marinas or via an inverter. Excellent results in marinas, with hundreds of TV chains from all over the world, depending on the contract you choose to work with the decoder.

 

Jacques et Annick Paulus

 

rue de Saint-Ghislain 15 B207                              Bateau Paranos

1348 Louvain-la-Neuve                                          Capitainerie de Saint-Mandrier
Mobile Jacques: +32 495 20 10 54                      2, quai Séverine

Mobile Annick: +32 498 52 78 31                        83430 Saint-Mandrier

Mobile en France: 06 10 57 02 90                       France

Mail: jacquespaulus@...                       

           

 

De : amelyachtowners@... [mailto:amelyachtowners@...]
Envoyé : dimanche 20 décembre 2015 11:25
À : amelyachtowners@...
Objet : Re: [Amel Yacht Owners] TV

 

 

We just have a 20" LED TV screen with inbuilt DVD player, in the place of the old TV...we don't watch TV

Cheers

Alan

Elyse SM437




Avast logo

L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
www.avast.com


Re: [Amel Yacht Owners] TV

Alan Leslie
 

We just have a 20" LED TV screen with inbuilt DVD player, in the place of the old TV...we don't watch TV
Cheers
Alan
Elyse SM437

Re: [Amel Yacht Owners] TV

Ann-Sofie Svanberg <kanalmamman@...>
 

If you can use your PC as a TV reciever, there are programs for it, and then  connect    the PC to a LED projector. Use one of the drawers on the portside for the projector and the hooks in the seling on the starboard side for the screen.
We have a set up like that, works pefectly. But we have skipped the TV since we never used it, was to much of a struggel finding channels after each time we have moved the boat. 

Regards
Annsofie
S/Y Lady Annila, SM232, 1998

Skickat från min iPad

19 dec. 2015 kl. 21:05 skrev Schiccherona schiccherona@... [amelyachtowners] <amelyachtowners@...>:

 

Hi Steve,
I'll may give you some ideas on this topic. Send me an e-mail on my personal address. 


Andrea

Schiccherona SM 441

Inviato da iPhone

Il giorno 19 dic 2015, alle ore 12:03, Stefano Biffi cptbiffi@... [amelyachtowners] <amelyachtowners@...> ha scritto:

 

Hallo everybody crossing or docking! My on board tv, 24 volt with DVD usb... has gone, no way to repair. I need to replace but no idea what is boarding now Amel; any advice?
Thanks

Stefano
N'EVEREST SM185 Bocca Di Magra

Re: [Amel Yacht Owners] electrolysis on mast/boom connection

Paul Osterberg
 

Further either disconnecting the shore power line or the main battery breakers did any effekt on the voltage reading
Paul 
S/Y Kerpa SM #259

Re: [Amel Yacht Owners] electrolysis on mast/boom connection

Paul Osterberg
 

Danny
Have the same corrosion issue.
After your posting a measured the volt between the vertical bolt and the mast and I have ca 0.4 v, between the horisontal bolt and the boom or mast was below 0.1 v. I assume connecting them al together only make sense if they the are bonded? 
I'm as well are very interested to have forums visdom to solve the problem
Paul on S/Y Kerpa SM #259

Speed

J Wagamon <jwagam@...>
 

Anybody know the PHRF and max hull speed on the Amel Mango? US Sailing does not list it.

Thanks
Jay

Re: [Amel Yacht Owners] TV

Flavia Pozzolini
 

Hi Steve,
I'll may give you some ideas on this topic. Send me an e-mail on my personal address. 


Andrea

Schiccherona SM 441

Inviato da iPhone

Il giorno 19 dic 2015, alle ore 12:03, Stefano Biffi cptbiffi@... [amelyachtowners] <amelyachtowners@...> ha scritto:

 

Hallo everybody crossing or docking! My on board tv, 24 volt with DVD usb... has gone, no way to repair. I need to replace but no idea what is boarding now Amel; any advice?
Thanks

Stefano
N'EVEREST SM185 Bocca Di Magra

Re: [Amel Yacht Owners] TV

karkauai
 

Bill, I think his problem if the TV, not the radio.
I'm of no help on this one.
Kent


On Dec 19, 2015, at 6:22 AM, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Stefano,

Hello from the Canaries! 

I am positive the radio you have is a 12VDC radio and connected to one of the "permanent" 24 to 12 transformers under the Nav Station table. If your radio has DVD and USB, it probably is not original and a replacement has already been done. Before you count the radio out, measure the voltage on the wiring harness on the back of the radio...it should be at about 13VDC...if you do not have voltage, one of the Permanent transformers is not working, has a blown fuse, or is turned OFF.

If it is original, it is also a single-DIN size. DIN refers to standard sizes of the mount that the radio slides into. So you can reuse the mount and slip any single-DIN size car radio into the slot. You will have to probably change the wiring harness, but is not difficult to figure out the which are the speaker wires, the power wires, etc.

There are two ways to approach this:
  1. Go to an automotive store or stereo store that sells car radios. Tell them what model radio you have and that you want a new single-DIN size radio...buy it and install it.
  2. Find one of these stores that will install it on your boat.
Best,

Bill
BeBe 387



On Sat, Dec 19, 2015 at 11:03 AM, Stefano Biffi cptbiffi@... [amelyachtowners] <amelyachtowners@...> wrote:
 

Hallo everybody crossing or docking! My on board tv, 24 volt with DVD usb... has gone, no way to repair. I need to replace but no idea what is boarding now Amel; any advice?
Thanks

Stefano
N'EVEREST SM185 Bocca Di Magra


Re: [Amel Yacht Owners] TV

Bill & Judy Rouse <yahoogroups@...>
 

Stefano,

Hello from the Canaries! 

I am positive the radio you have is a 12VDC radio and connected to one of the "permanent" 24 to 12 transformers under the Nav Station table. If your radio has DVD and USB, it probably is not original and a replacement has already been done. Before you count the radio out, measure the voltage on the wiring harness on the back of the radio...it should be at about 13VDC...if you do not have voltage, one of the Permanent transformers is not working, has a blown fuse, or is turned OFF.

If it is original, it is also a single-DIN size. DIN refers to standard sizes of the mount that the radio slides into. So you can reuse the mount and slip any single-DIN size car radio into the slot. You will have to probably change the wiring harness, but is not difficult to figure out the which are the speaker wires, the power wires, etc.

There are two ways to approach this:
  1. Go to an automotive store or stereo store that sells car radios. Tell them what model radio you have and that you want a new single-DIN size radio...buy it and install it.
  2. Find one of these stores that will install it on your boat.
Best,

Bill
BeBe 387



On Sat, Dec 19, 2015 at 11:03 AM, Stefano Biffi cptbiffi@... [amelyachtowners] <amelyachtowners@...> wrote:
 

Hallo everybody crossing or docking! My on board tv, 24 volt with DVD usb... has gone, no way to repair. I need to replace but no idea what is boarding now Amel; any advice?
Thanks

Stefano
N'EVEREST SM185 Bocca Di Magra


TV

Stefano Biffi
 

Hallo everybody crossing or docking! My on board tv, 24 volt with DVD usb... has gone, no way to repair. I need to replace but no idea what is boarding now Amel; any advice?
Thanks

Stefano
N'EVEREST SM185 Bocca Di Magra

Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

eric freedman
 

Hi Kent,

Would you mind summarizing the steps you have taken to measure your ”problem”

and your findings?

 

What do you perceive is wrong? Is it the fact that there is voltage between the bonding and the 24 volt battery negative.

 

As an additional thought, there is a battery shunt behind the outboard side of the battery bank “tub”.

The negative for the entire battery bank is connected to one side of the shunt an the DC for the boat is connected to the other side.

Did you inspect it to see if there is some type of short between it and the bonding.

 

My second thought is possibly the battery monitor has some connection to the bonding somewhere.

On the shunt there are some small wires to operate the battery monitor. Did you try  disconnecting all of them,  let them hang and try to see if you still have a connection between the bonding and the DC negative?

Don’t forget to mark them as to where they go.  Leave the big negative cables connected to the shunt otherwise you will have no DC on the boat.

 

You did check the bonding between  the DC negative and the case of the battery charger ?

Also the inverter.  Did you isolate these items?

 

Really grabbing at straws here.

However you have peaked my interest and I can’t wait to get back to Kimberlite and see what I find.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

Did you open and remove the fuse behind the battery switches?

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Saturday, December 19, 2015 12:14 AM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

 

 

Hi Eric,

Yes, there are two cables and one small wire on the (+) and (-) poles on the battery side of the 24v switch.

*Battery cable

*24v charger cable

*"Permanent " wire for the 

24->12v converter that powers the radio and retains its memory.

 

I have the same issue whether the charger and Permanent are connected or not.

 

I had an electrician come to the boat today from Savannah who does mostly galvanic/electrolytic surveys for a living. He spent several hours on the boat with me and checked everything thoroughly.  While he couldn't identify the source of the 24vDC between the battery (+) and the bonding system, he was convinced that it has nothing to do with my zincs disappearing too quickly.  There is no change in hull potential when this is present (battery switch on) versus absent(battery switch off).

Although the 24vDC does light a 2.5 watt bulb, there is infinite resistance when checking the battery (-) to bonding system.

 

He says most 53' boats with all the systems we have use 2-3 times as much zinc as we do.

 

While I don't like the fact that I don't have a clear explanation, I don't know of anything else to do but keep a close watch on my zincs and hull potential.

 

I'll keep posting as I learn more or find new issues that shed light on this.

 

Merry Christmas!

Kent

SM243

Kristy 



On Dec 18, 2015, at 7:20 PM, sailormon kimberlite@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Kent,

Possibly I do not remember correctly, but I thought there was an inline fuse just hanging from some a wire

behind the battery switches. I think that has to do with memory of the cd changer/radio. Just a memory from 13 years ago at the Amel introductory class. I wish I was on board to check it for you.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Sunday, December 06, 2015 4:12 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

 

 

Thanks, John.  That's what I've decided to do with my 220AC system.

 

Now chasing down a connection between 24v DC (+) main cable (that goes from the main battery switch to the lug on the foreword bulkhead in the engine room...disconnected from all other cables at the lug) and the bonding system.  When checking resistance, it is a solid (no resistance) connection that carries enough amps to light a test bulb when the main battery switch is on and all 24v breakers are off (including the ones in the engine room, passageway, and foreword port locker).  When the switch is off it has no voltage, but still shows a no resistance connection.  If I disconnect battery + cable in the battery compartment, the connection disappears.  The negative side shows no connection or voltage with the switch either on or off.

 

The only 24v equipment that is connected to the battery side of the main switch is the Charles 60 Amp charger, and the "Permanent " 24->12V Sailor transformer under the Nav station.

 

Does any of this suggest to anyone where the connection is?

 

I'm in the Jacksonville FL area, does anyone know of a good...make that Great...marine electrician nearby?

 

Thanks again everyone for your patience and help.

Kent 

SM243

Kristy 

Fernandina Beach FL



On Dec 5, 2015, at 7:22 PM, jjjk12s@... [amelyachtowners] <amelyachtowners@...> wrote:

 


Is this a case of PREVIOUSLY the risk was so small, and the disandvatages significant, that the AC generator ground - neutral connection was not made, whereas nowadays, with readily available galvanic isolators and a more litiginous society the small risk overcomes the disadvantages and it should be connected. So it would be sensible to modify older designs that may have been correct at the time where circumstances have moved on. Amels have always evolved so modifying an older Amel to mirror a newer Amel's systems seems totally in order and not messing with Cpt Henry's concepts.

 

John

Maramu #91 1981

Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

karkauai
 

Hi Eric,
Yes, there are two cables and one small wire on the (+) and (-) poles on the battery side of the 24v switch.
*Battery cable
*24v charger cable
*"Permanent " wire for the 
24->12v converter that powers the radio and retains its memory.

I have the same issue whether the charger and Permanent are connected or not.

I had an electrician come to the boat today from Savannah who does mostly galvanic/electrolytic surveys for a living. He spent several hours on the boat with me and checked everything thoroughly.  While he couldn't identify the source of the 24vDC between the battery (+) and the bonding system, he was convinced that it has nothing to do with my zincs disappearing too quickly.  There is no change in hull potential when this is present (battery switch on) versus absent(battery switch off).
Although the 24vDC does light a 2.5 watt bulb, there is infinite resistance when checking the battery (-) to bonding system.

He says most 53' boats with all the systems we have use 2-3 times as much zinc as we do.

While I don't like the fact that I don't have a clear explanation, I don't know of anything else to do but keep a close watch on my zincs and hull potential.

I'll keep posting as I learn more or find new issues that shed light on this.

Merry Christmas!
Kent
SM243
Kristy 


On Dec 18, 2015, at 7:20 PM, sailormon kimberlite@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Kent,

Possibly I do not remember correctly, but I thought there was an inline fuse just hanging from some a wire

behind the battery switches. I think that has to do with memory of the cd changer/radio. Just a memory from 13 years ago at the Amel introductory class. I wish I was on board to check it for you.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Sunday, December 06, 2015 4:12 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

 

 

Thanks, John.  That's what I've decided to do with my 220AC system.

 

Now chasing down a connection between 24v DC (+) main cable (that goes from the main battery switch to the lug on the foreword bulkhead in the engine room...disconnected from all other cables at the lug) and the bonding system.  When checking resistance, it is a solid (no resistance) connection that carries enough amps to light a test bulb when the main battery switch is on and all 24v breakers are off (including the ones in the engine room, passageway, and foreword port locker).  When the switch is off it has no voltage, but still shows a no resistance connection.  If I disconnect battery + cable in the battery compartment, the connection disappears.  The negative side shows no connection or voltage with the switch either on or off.

 

The only 24v equipment that is connected to the battery side of the main switch is the Charles 60 Amp charger, and the "Permanent " 24->12V Sailor transformer under the Nav station.

 

Does any of this suggest to anyone where the connection is?

 

I'm in the Jacksonville FL area, does anyone know of a good...make that Great...marine electrician nearby?

 

Thanks again everyone for your patience and help.

Kent 

SM243

Kristy 

Fernandina Beach FL



On Dec 5, 2015, at 7:22 PM, jjjk12s@... [amelyachtowners] <amelyachtowners@...> wrote:

 


Is this a case of PREVIOUSLY the risk was so small, and the disandvatages significant, that the AC generator ground - neutral connection was not made, whereas nowadays, with readily available galvanic isolators and a more litiginous society the small risk overcomes the disadvantages and it should be connected. So it would be sensible to modify older designs that may have been correct at the time where circumstances have moved on. Amels have always evolved so modifying an older Amel to mirror a newer Amel's systems seems totally in order and not messing with Cpt Henry's concepts.

 

John

Maramu #91 1981

Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

eric freedman
 

Kent,

Possibly I do not remember correctly, but I thought there was an inline fuse just hanging from some a wire

behind the battery switches. I think that has to do with memory of the cd changer/radio. Just a memory from 13 years ago at the Amel introductory class. I wish I was on board to check it for you.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Sunday, December 06, 2015 4:12 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] Re: Prop Shaft Electrolysis

 

 

Thanks, John.  That's what I've decided to do with my 220AC system.

 

Now chasing down a connection between 24v DC (+) main cable (that goes from the main battery switch to the lug on the foreword bulkhead in the engine room...disconnected from all other cables at the lug) and the bonding system.  When checking resistance, it is a solid (no resistance) connection that carries enough amps to light a test bulb when the main battery switch is on and all 24v breakers are off (including the ones in the engine room, passageway, and foreword port locker).  When the switch is off it has no voltage, but still shows a no resistance connection.  If I disconnect battery + cable in the battery compartment, the connection disappears.  The negative side shows no connection or voltage with the switch either on or off.

 

The only 24v equipment that is connected to the battery side of the main switch is the Charles 60 Amp charger, and the "Permanent " 24->12V Sailor transformer under the Nav station.

 

Does any of this suggest to anyone where the connection is?

 

I'm in the Jacksonville FL area, does anyone know of a good...make that Great...marine electrician nearby?

 

Thanks again everyone for your patience and help.

Kent 

SM243

Kristy 

Fernandina Beach FL



On Dec 5, 2015, at 7:22 PM, jjjk12s@... [amelyachtowners] <amelyachtowners@...> wrote:

 


Is this a case of PREVIOUSLY the risk was so small, and the disandvatages significant, that the AC generator ground - neutral connection was not made, whereas nowadays, with readily available galvanic isolators and a more litiginous society the small risk overcomes the disadvantages and it should be connected. So it would be sensible to modify older designs that may have been correct at the time where circumstances have moved on. Amels have always evolved so modifying an older Amel to mirror a newer Amel's systems seems totally in order and not messing with Cpt Henry's concepts.

 

John

Maramu #91 1981

Re: [Amel Yacht Owners] electrolysis on mast/boom connection

eric freedman
 

Danny,

Then how about coating the bolt with dielectric grease and see if that makes a change.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Friday, December 18, 2015 1:05 PM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] electrolysis on mast/boom connection

 

 

Hi Eric,

thanks for the reply. The new inserts are a very dense material and I have only done a couple of gentle day sails with no spray flying since they were put in so I doubt if salt would have penetrated. The bushings are a tight press fit and they are in two pieces meeting in the middle with a collar at each end so removal would not be simple

Regards

Danny
 

 


From: "sailormon kimberlite@... [amelyachtowners]" <amelyachtowners@...>
To: amelyachtowners@...
Sent: Saturday, 19 December 2015 5:24 AM
Subject: RE: [Amel Yacht Owners] electrolysis on mast/boom connection

 

 

My guess is that salt has penetrated the new insert and you have made another battery.

Did you try removing the new insert and washers and soaking them for 24 hours in something like salt away ?This stuff  dissolves salt crystals and is used to clean out outboard motors. I use it to clean the salt of the rails, deck  and hardware after a long passage. See if that makes a difference,

Or just as a simple experiment , wrap the bolt in a lot of electrical tape without the bushings and see if you get the same voltage- my guess is , you will not.

Obviously the new bushings worked for a while

 

 

Amel intentionally did not connect the rigging to the bonding. They had their own thoughts about this which was never explained to me. I have my own thoughts on the subject which I will not discuss here-That is another can of worms.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Friday, December 18, 2015 9:18 AM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] electrolysis on mast/boom connection

 

 

Danny , I have voltage  readings in that area as well. What happens if you shut the breakers off to the mast and boom motors ? Does the voltage change ?

 Pat SM # 123

 

 

-----Original Message-----
From: Danny and Yvonne SIMMS simms@... [amelyachtowners] <amelyachtowners@...>
To: yahoogroups <amelyachtowners@...>
Sent: Fri, Dec 18, 2015 3:37 am
Subject: [Amel Yacht Owners] electrolysis on mast/boom connection

 

Hi all,

I have a problem I would like your collective wisdom on.

For a couple of years I have had electrolysis/corrosion occurring on the plates on the mast that receive the boom.

These two horizontal plates have a vertical bolt passing through them and through an alloy block through which a horizontal bolt passes attaching the boom.

The corrosion is exclusively on the plates on the mast.

I started by cleaning off and applying the appropriate aluminum paint systems. (And have done several times)

At the same time I did my best to isolate the stainless bolts from the alloy components with plastic washers. There are fiber inserts through which the bolts pass..

 This had no effect and the corrosion continued. Investigating with a multi meter I found up to 0.7 of a volt between the mast and the vertical bolt and the vertical bolt and the alloy block it passes through, however not the horizontal bolt.

 This voltage is enough to cause the damage.

On the advice of a marine electrician I drilled and tapped the various components (mast bolts, alloy block and boom) and connected them with electric cable which of course eliminated the differential but didn't seem to stop the corrosion. Logic seemed to suggest a "battery" was being created between this bolt and the block&nbs p;perhaps caused by degradation of the fiber inserts and invasion by salt crystals. 

 

So I had new ones made by a marine engineer using material he believed robust and with good insulating properties. After installing these I removed the connecting wires and joy... no differential. That was a few weeks ago. Now I find a differential of 0.4 of a volt...woe.

 

There is no differential between the two electric motors and the mast at rest. The corrosion is exclusively occurring on the plates on the mast that secure the boom

 

So now I have replaced the connecting wires and of course there is no differential. Question. Sho uld I connect the mast to the bonding system that connects to the zinc anodes on the rudder.

A thought, does Amel connect the mast to the bonding system? if so perhaps I have lost a connection.

The corrosion is getting serious so I need to find a solution

 

Kind Regards

Danny

SM 299 Ocean Pearl

   

 

Re: [Amel Yacht Owners] electrolysis on mast/boom connection

Danny and Yvonne SIMMS
 

Hi Eric,
thanks for the reply. The new inserts are a very dense material and I have only done a couple of gentle day sails with no spray flying since they were put in so I doubt if salt would have penetrated. The bushings are a tight press fit and they are in two pieces meeting in the middle with a collar at each end so removal would not be simple
Regards
Danny
 



From: "sailormon kimberlite@... [amelyachtowners]"
To: amelyachtowners@...
Sent: Saturday, 19 December 2015 5:24 AM
Subject: RE: [Amel Yacht Owners] electrolysis on mast/boom connection

 
My guess is that salt has penetrated the new insert and you have made another battery.
Did you try removing the new insert and washers and soaking them for 24 hours in something like salt away ?This stuff  dissolves salt crystals and is used to clean out outboard motors. I use it to clean the salt of the rails, deck  and hardware after a long passage. See if that makes a difference,
Or just as a simple experiment , wrap the bolt in a lot of electrical tape without the bushings and see if you get the same voltage- my guess is , you will not.
Obviously the new bushings worked for a while
 
 
Amel intentionally did not connect the rigging to the bonding. They had their own thoughts about this which was never explained to me. I have my own thoughts on the subject which I will not discuss here-That is another can of worms.
Fair Winds
Eric
Kimberlite Amel Super Maramu #376
 
 
From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Friday, December 18, 2015 9:18 AM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] electrolysis on mast/boom connection
 
 
Danny , I have voltage  readings in that area as well. What happens if you shut the breakers off to the mast and boom motors ? Does the voltage change ?
 Pat SM # 123
 
 
-----Original Message-----
From: Danny and Yvonne SIMMS simms@... [amelyachtowners] <amelyachtowners@...>
To: yahoogroups <amelyachtowners@...>
Sent: Fri, Dec 18, 2015 3:37 am
Subject: [Amel Yacht Owners] electrolysis on mast/boom connection
 
Hi all,
I have a problem I would like your collective wisdom on.
For a couple of years I have had electrolysis/corrosion occurring on the plates on the mast that receive the boom.
These two horizontal plates have a vertical bolt passing through them and through an alloy block through which a horizontal bolt passes attaching the boom.
The corrosion is exclusively on the plates on the mast.
I started by cleaning off and applying the appropriate aluminum paint systems. (And have done several times)
At the same time I did my best to isolate the stainless bolts from the alloy components with plastic washers. There are fiber inserts through which the bolts pass..
 This had no effect and the corrosion continued. Investigating with a multi meter I found up to 0.7 of a volt between the mast and the vertical bolt and the vertical bolt and the alloy block it passes through, however not the horizontal bolt.
 This voltage is enough to cause the damage.
On the advice of a marine electrician I drilled and tapped the various components (mast bolts, alloy block and boom) and connected them with electric cable which of course eliminated the differential but didn't seem to stop the corrosion. Logic seemed to suggest a "battery" was being created between this bolt and the block&nbs p;perhaps caused by degradation of the fiber inserts and invasion by salt crystals. 
 
So I had new ones made by a marine engineer using material he believed robust and with good insulating properties. After installing these I removed the connecting wires and joy... no differential. That was a few weeks ago. Now I find a differential of 0.4 of a volt...woe.
 
There is no differential between the two electric motors and the mast at rest. The corrosion is exclusively occurring on the plates on the mast that secure the boom
 
So now I have replaced the connecting wires and of course there is no differential. Question. Sho uld I connect the mast to the bonding system that connects to the zinc anodes on the rudder.
A thought, does Amel connect the mast to the bonding system? if so perhaps I have lost a connection.
The corrosion is getting serious so I need to find a solution
 
Kind Regards
Danny
SM 299 Ocean Pearl
   


Re: [Amel Yacht Owners] electrolysis on mast/boom connection

Danny and Yvonne SIMMS
 

Hi Pat, No there is no change if the breakers are off. I wouldn't be concerned if it wasn't for the corrosion.
Regards
Danny
 



From: "Patrick Mcaneny sailw32@... [amelyachtowners]"
To: amelyachtowners@...
Sent: Saturday, 19 December 2015 3:18 AM
Subject: Re: [Amel Yacht Owners] electrolysis on mast/boom connection

 
Danny , I have voltage  readings in that area as well. What happens if you shut the breakers off to the mast and boom motors ? Does the voltage change ?
 Pat SM # 123
 
 
-----Original Message-----
From: Danny and Yvonne SIMMS simms@... [amelyachtowners]
To: yahoogroups
Sent: Fri, Dec 18, 2015 3:37 am
Subject: [Amel Yacht Owners] electrolysis on mast/boom connection

 
Hi all,
I have a problem I would like your collective wisdom on.
For a couple of years I have had electrolysis/corrosion occurring on the plates on the mast that receive the boom.
These two horizontal plates have a vertical bolt passing through them and through an alloy block through which a horizontal bolt passes attaching the boom.
The corrosion is exclusively on the plates on the mast.
I started by cleaning off and applying the appropriate aluminum paint systems. (And have done several times)
At the same time I did my best to isolate the stainless bolts from the alloy components with plastic washers. There are fiber inserts through which the bolts pass.
 This had no effect and the corrosion continued. Investigating with a multi meter I found up to 0.7 of a volt between the mast and the vertical bolt and the vertical bolt and the alloy block it passes through, however not the horizontal bolt.
 This voltage is enough to cause the damage.
On the advice of a marine electrician I drilled and tapped the various components (mast bolts, alloy block and boom) and connected them with electric cable which of course eliminated the differential but didn't seem to stop the corrosion. Logic seemed to suggest a "battery" was being created between this bolt and the block&nbs p;perhaps caused by degradation of the fiber inserts and invasion by salt crystals. 

So I had new ones made by a marine engineer using material he believed robust and with good insulating properties. After installing these I removed the connecting wires and joy... no differential. That was a few weeks ago. Now I find a differential of 0.4 of a volt...woe.
 
There is no differential between the two electric motors and the mast at rest. The corrosion is exclusively occurring on the plates on the mast that secure the boom

So now I have replaced the connecting wires and of course there is no differential. Question. Sho uld I connect the mast to the bonding system that connects to the zinc anodes on the rudder.
A thought, does Amel connect the mast to the bonding system? if so perhaps I have lost a connection.
The corrosion is getting serious so I need to find a solution

Kind Regards
Danny
SM 299 Ocean Pearl
   


Re: [Amel Yacht Owners] electrolysis on mast/boom connection

eric freedman
 

My guess is that salt has penetrated the new insert and you have made another battery.

Did you try removing the new insert and washers and soaking them for 24 hours in something like salt away ?This stuff  dissolves salt crystals and is used to clean out outboard motors. I use it to clean the salt of the rails, deck  and hardware after a long passage. See if that makes a difference,

Or just as a simple experiment , wrap the bolt in a lot of electrical tape without the bushings and see if you get the same voltage- my guess is , you will not.

Obviously the new bushings worked for a while

 

 

Amel intentionally did not connect the rigging to the bonding. They had their own thoughts about this which was never explained to me. I have my own thoughts on the subject which I will not discuss here-That is another can of worms.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Friday, December 18, 2015 9:18 AM
To: amelyachtowners@...
Subject: Re: [Amel Yacht Owners] electrolysis on mast/boom connection

 

 

Danny , I have voltage  readings in that area as well. What happens if you shut the breakers off to the mast and boom motors ? Does the voltage change ?

 Pat SM # 123

 

 

-----Original Message-----
From: Danny and Yvonne SIMMS simms@... [amelyachtowners] <amelyachtowners@...>
To: yahoogroups <amelyachtowners@...>
Sent: Fri, Dec 18, 2015 3:37 am
Subject: [Amel Yacht Owners] electrolysis on mast/boom connection

 

Hi all,

I have a problem I would like your collective wisdom on.

For a couple of years I have had electrolysis/corrosion occurring on the plates on the mast that receive the boom.

These two horizontal plates have a vertical bolt passing through them and through an alloy block through which a horizontal bolt passes attaching the boom.

The corrosion is exclusively on the plates on the mast.

I started by cleaning off and applying the appropriate aluminum paint systems. (And have done several times)

At the same time I did my best to isolate the stainless bolts from the alloy components with plastic washers. There are fiber inserts through which the bolts pass.

 This had no effect and the corrosion continued. Investigating with a multi meter I found up to 0.7 of a volt between the mast and the vertical bolt and the vertical bolt and the alloy block it passes through, however not the horizontal bolt.

 This voltage is enough to cause the damage.

On the advice of a marine electrician I drilled and tapped the various components (mast bolts, alloy block and boom) and connected them with electric cable which of course eliminated the differential but didn't seem to stop the corrosion. Logic seemed to suggest a "battery" was being created between this bolt and the block&nbs p;perhaps caused by degradation of the fiber inserts and invasion by salt crystals. 

 

So I had new ones made by a marine engineer using material he believed robust and with good insulating properties. After installing these I removed the connecting wires and joy... no differential. That was a few weeks ago. Now I find a differential of 0.4 of a volt...woe.

 

There is no differential between the two electric motors and the mast at rest. The corrosion is exclusively occurring on the plates on the mast that secure the boom

 

So now I have replaced the connecting wires and of course there is no differential. Question. Sho uld I connect the mast to the bonding system that connects to the zinc anodes on the rudder.

A thought, does Amel connect the mast to the bonding system? if so perhaps I have lost a connection.

The corrosion is getting serious so I need to find a solution

 

Kind Regards

Danny

SM 299 Ocean Pearl

   

Re: [Amel Yacht Owners] electrolysis on mast/boom connection

Patrick McAneny
 

Danny , I have voltage  readings in that area as well. What happens if you shut the breakers off to the mast and boom motors ? Does the voltage change ?
 Pat SM # 123
 
 

-----Original Message-----
From: Danny and Yvonne SIMMS simms@... [amelyachtowners]
To: yahoogroups
Sent: Fri, Dec 18, 2015 3:37 am
Subject: [Amel Yacht Owners] electrolysis on mast/boom connection

 
Hi all,
I have a problem I would like your collective wisdom on.
For a couple of years I have had electrolysis/corrosion occurring on the plates on the mast that receive the boom.
These two horizontal plates have a vertical bolt passing through them and through an alloy block through which a horizontal bolt passes attaching the boom.
The corrosion is exclusively on the plates on the mast.
I started by cleaning off and applying the appropriate aluminum paint systems. (And have done several times)
At the same time I did my best to isolate the stainless bolts from the alloy components with plastic washers. There are fiber inserts through which the bolts pass.
 This had no effect and the corrosion continued. Investigating with a multi meter I found up to 0.7 of a volt between the mast and the vertical bolt and the vertical bolt and the alloy block it passes through, however not the horizontal bolt.
 This voltage is enough to cause the damage.
On the advice of a marine electrician I drilled and tapped the various components (mast bolts, alloy block and boom) and connected them with electric cable which of course eliminated the differential but didn't seem to stop the corrosion. Logic seemed to suggest a "battery" was being created between this bolt and the block&nbs p;perhaps caused by degradation of the fiber inserts and invasion by salt crystals. 

So I had new ones made by a marine engineer using material he believed robust and with good insulating properties. After installing these I removed the connecting wires and joy... no differential. That was a few weeks ago. Now I find a differential of 0.4 of a volt...woe.
 
There is no differential between the two electric motors and the mast at rest. The corrosion is exclusively occurring on the plates on the mast that secure the boom

So now I have replaced the connecting wires and of course there is no differential. Question. Sho uld I connect the mast to the bonding system that connects to the zinc anodes on the rudder.
A thought, does Amel connect the mast to the bonding system? if so perhaps I have lost a connection.
The corrosion is getting serious so I need to find a solution

Kind Regards
Danny
SM 299 Ocean Pearl
   

Re: [Amel Yacht Owners] Re: Rigging tune on Maramu caused damage

Patrick McAneny
 

James, I am  not a rigger , although I have installed standing rigging a few times. However I am a builder and have installed many compression posts in houses. I have always made sure that the post is absolutely plumb and straight . Once out of plumb it loses it ability to carry the loads and will more easily bend or move further out a plumb , increased loads could lead to sudden failure. It seems strange that you state that the compression post is " angled back fore and aft a lot ". I do not see how it would provide support being so far out of plumb. Perhaps someone with a Maramu could confirm that this is normal or not.  The two post angled out to the ribs would seem to be compression posts as well . Do you see any deflection in them or any deflection in the hull where they rest. Keep in mind that it looks like your mizzen mast has only moved downward very little at this point so any deflection would be slight and take close inspection to discern . Use a string pulled tightly one end placed against  each end of the posts , check it , and move around 90 degrees and check again . The string should lay flat against post , should be parallel . If you see a gap , then there is deflection . The hull eyeball it , a short straight edge maybe a foot long held on the outside of the hull horizontally where the post rest should show any hull deformation. If you find anything let the group know maybe we can come up with some suggestions .
 
Good Luck,
Pat SM Shenanigans
 
 

-----Original Message-----
From: j.lochhead@... [amelyachtowners]
To: amelyachtowners
Sent: Thu, Dec 17, 2015 4:32 pm
Subject: [Amel Yacht Owners] Re: Rigging tune on Maramu caused damage

 
Hi Patrick and Sailor,
Thanks for your responses.
The maramu is a bit different from the SM from what I can work out.  There is a small "compression" post under the seat that Then in the engine bay there are 2 posts that are angled to port and starboard onto ribs in the hull.  I will check all these again today but they look in good condition. 

Interestingly though the post under the seat is angled back a lot fore and aft, so I don't think this could possibly be taking all the load.  It has always been like this as long as we have had the boat and I don't see how it could possibly have been installed in column with the mast as the seat construction would make this impossible.  I would love to hear from other maramu owners on their setup.

Given this I think that the fibreglass seat must be acting as some sort of "beam" that is transferring the load down to the p osts in the engine bay.  What I cant work out is how this seat section is fixed in place.  I will be spending a bit more time trying to work this out today.

As far as the mast rake I have read the posts on spreader cracking and it appears that there should be a small amount of rake, at least on the SM.  Would love to know if this is the same as the maramu.

 I will loosening the forestay today and will see what this results in.

Lastly I did not say that this damage occurred at anchor.  We have not sailed the boat in the time between when I tuned the rig and noticed the damage.