Date   

Re: Dive Compressor mounting on SM

Porter McRoberts
 

Ours sits also in the same spot. Rests on its feet. No issues with plenty of sailing. We take it out and put in the middle of the cockpit to use it so it’s well ventilated.   

Porter


Porter McRoberts 
S/V IBIS A54-152
WhatsApp:+1 754 265 2206
Www.fouribis.net

On Oct 2, 2020, at 4:43 PM, Mark Erdos <mcerdos@...> wrote:



Hi Tom,

When Amel installs the compressor it is mounted on a piece of wood and fitted to rails. This means it can be slid back out of the way when not needed. The wood the compressor is mounted on can be fixed with pins when underway.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Tahiti, French Polynesia

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Thomas Kleman
Sent: Friday, October 2, 2020 3:01 PM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] Dive Compressor mounting on SM

 

So, I've just purchased a dive compressor and am installing it. It fits perfectly and snugly on it's rubber feet between the dive tank storage and the port cockpit lazarette divider....using 25 1/2 of the 26 inches available. My question is how people have secured their compressors in place. I don't want to remove the rubber feet to control the vibration and there is not an obvious answer (to me). Securing it to the dive tank storage and lazarette divider seems awkward and would transfer a lot of vibration. I've looked at the pics on this site but it wasn't helpful. Or have people not permanently secured it ?

Tom and Kirstin
SV L'ORIENT
SM2K 422


Re: Dive Compressor mounting on SM

Mark Erdos
 

Hi Tom,

When Amel installs the compressor it is mounted on a piece of wood and fitted to rails. This means it can be slid back out of the way when not needed. The wood the compressor is mounted on can be fixed with pins when underway.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Tahiti, French Polynesia

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Thomas Kleman
Sent: Friday, October 2, 2020 3:01 PM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] Dive Compressor mounting on SM

 

So, I've just purchased a dive compressor and am installing it. It fits perfectly and snugly on it's rubber feet between the dive tank storage and the port cockpit lazarette divider....using 25 1/2 of the 26 inches available. My question is how people have secured their compressors in place. I don't want to remove the rubber feet to control the vibration and there is not an obvious answer (to me). Securing it to the dive tank storage and lazarette divider seems awkward and would transfer a lot of vibration. I've looked at the pics on this site but it wasn't helpful. Or have people not permanently secured it ?

Tom and Kirstin
SV L'ORIENT
SM2K 422


Dive Compressor mounting on SM

Thomas Kleman
 

So, I've just purchased a dive compressor and am installing it. It fits perfectly and snugly on it's rubber feet between the dive tank storage and the port cockpit lazarette divider....using 25 1/2 of the 26 inches available. My question is how people have secured their compressors in place. I don't want to remove the rubber feet to control the vibration and there is not an obvious answer (to me). Securing it to the dive tank storage and lazarette divider seems awkward and would transfer a lot of vibration. I've looked at the pics on this site but it wasn't helpful. Or have people not permanently secured it ?

Tom and Kirstin
SV L'ORIENT
SM2K 422


Re: AMEL orange boot stripe

Arnold Mente
 

AWLGRIB International Orange I think is very close!!

Best 

Arnold 
SV Zephyr
SM203

Am 02.10.2020 um 21:27 schrieb Ian Townsend <smlocalola@...>:

I know that the orange boot stripe color is AMEL specific. But has anyone used an Awlgrip or Interlux Stock product that is close? I’ve search the site and can’t find anything. The closet I see is Awlgrip International Orange or Vermillion. Not looking to go Desert Sand. 


Grazie tutti. 

 

Ian

SM153 
Loca Lola II
Maryland


AWL GRIP Touch Up Kit 2-K 180ml - Ihr Yachtfarben Spezialist

--
Arnold
SY Zephyr SM203


Re: After market engine mounts ? #replacement

Craig Briggs
 

Can't think of any reason not to change the "C" drive mounts while you're at it as they've got the same hours on them as the engine mounts (actually, they might more accurately be called frame mounts, not engine mounts). My recommendation would be to let the "C" drive sit in place with it's new mounts totally loosened, that is the lower nuts backed off so they are not touching the "C" drive feet. Then align the frame and engine assembly with the new mounts carrying that weight (of course you'll need to unweight the frame/engine to adjust the new mounts - a trial and error process). After it's aligned, then snug up the "C" drive mounts with the bottom nut so the weight is shared between the trumpet and the mounts, that is, you don't want the full weight of the "C" drive upper unit on the trumpet, as there's a foam gasket between the bottom of the trumpet and the hull hole. In other words, the weight of the frame, engine and "C" drive should be held by the four frame/engine mounts. 
And, while the alignment tool is helpful, the Vetus coupling is engineered to take up some misalignment and feeler gauges and eyeballs are good. Or put some lipstick on the flange, put a piece of paper between and slide the engine gently in place so it just kisses the flange - the lipstick will show any misalignment.
-- A fun project, indeed.
Craig - SN68 Sangaris, Tropic Isle Harbor, FL


AMEL orange boot stripe

Ian Townsend
 

I know that the orange boot stripe color is AMEL specific. But has anyone used an Awlgrip or Interlux Stock product that is close? I’ve search the site and can’t find anything. The closet I see is Awlgrip International Orange or Vermillion. Not looking to go Desert Sand. 


Grazie tutti. 

 

Ian

SM153 
Loca Lola II
Maryland


Re: After market engine mounts ? #replacement

Paul Guenette
 

Thank you for responding to my query about alternative engine mounts. 

I have decided to go with the Yanmar mounts, ( Y 200  129470-08351 ).  I plan to change all four Yanmar mounts.  I am in the process of tracking four of these down now.

I have purchased the K018 Bushing Kit from Vetus and plan to check and change these out if need be. 

I have a machinist making me an alignment tool per the specs and drawings I found here on the forum. 

I am wondering if I should be changing the two C Drive mounts at the same time as I do the Yanmar engine mounts and Vetus bushings ?

Is there anything else I should be considering while doing this maintenance project ?

Thank you for your time, Paul

Aramis, SM 2000,  444

Comox, BC, Canada


Volvo 24v alternator exciter

eric freedman
 

Here is the wiring diagram for the alternator and relay.

Fair Winds

Eric

SM 376 Kimberlite


ATTENTION KENT-- Onan Generator exhaust temperature switch - great price.

eric freedman
 

Hi Kent,

Please send me a check for $ 86.00 for 3 switches.

The switches are on the way to me and I will send 3 to you

as soon as they arrive.

Fair Winds

Eric

 

Eric Freedman

345 New York Ave

Huntington, NY 11743

 

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of karkauai via groups.io
Sent: Tuesday, July 28, 2020 9:29 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan Generator exhaust temperature switch - great price.

 

Thanks Eric,

Ive had two go bad in the last year. Please order three for me.

 

We'll be coming down from Maine in late Sept.  Will you be home then?

Thanks.

Kent & Iris

Kristy

SM 243

 

On Jul 28, 2020 8:37 PM, eric freedman <kimberlite@...> wrote:

I have broken a few of these switches over the years. I have done this by reaching over the generator to retrieve something stored behind the genset.

I received a quote from my Onan dealer and on Amazon for around $90- plus tax which is ridiculous.

I tracked down the OEM manufacturer and the cost is about $23- plus a one time set up fee of about $50- I plan on ordering 2 of these. They stated that they make this for ONAN. If anyone is interested please let me know and I can order them for you $33- each plus USPS of about $8.00.

I will order the switches within a week.

Fair Winds,

Eric

SM 376 Kimberlite 

 


Re: Onan Generator exhaust temperature switch - great price.

eric freedman
 

Hi Vladimir,

Please send me a check for $34.00 for 1 switch.

The switches are on the way to me and I will send 1 to you

as soon as they arrive.

Fair Winds

Eric

 

Eric Freedman

345 New York Ave

Huntington, NY 11743

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of VLADIMIR SONSEV
Sent: Monday, August 10, 2020 9:11 AM
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Onan Generator exhaust temperature switch - great price.

 

Hi Eric,

 

I want to buy one. Please provide instructors for payment.

 

Vladimir

202 258 1916

 

SM 345 " LIFE IS GOOD"

On Tue, Jul 28, 2020, 8:37 PM eric freedman <kimberlite@...> wrote:

I have broken a few of these switches over the years. I have done this by reaching over the generator to retrieve something stored behind the genset.

I received a quote from my Onan dealer and on Amazon for around $90- plus tax which is ridiculous.

I tracked down the OEM manufacturer and the cost is about $23- plus a one time set up fee of about $50- I plan on ordering 2 of these. They stated that they make this for ONAN. If anyone is interested please let me know and I can order them for you $33- each plus USPS of about $8.00.

I will order the switches within a week.

Fair Winds,

Eric

SM 376 Kimberlite 


Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Patrick McAneny
 

Justin, I must have missed that post ,came into this thread late. Just read that with new downloads their B&G FLS is working well, so maybe I need to keep my speed down and update my downloads.
Thanks,
Pat 
SM Shenanigans


-----Original Message-----
From: Petaris <petaris@...>
To: main@AmelYachtOwners.groups.io Group Moderators <main@amelyachtowners.groups.io>
Sent: Thu, Oct 1, 2020 9:27 am
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Pat,
I believe someone further up the thread mentioned a max SOG of 2.5 kts.  Maybe that is part of the issue for you?
Regards,
- Justin
Hopeful future SM/SM2k owner

On Thu, Oct 1, 2020 at 6:57 AM Patrick McAneny via groups.io <sailw32=aol.com@groups.io> wrote:
As I said in a previous post ,I have a new B&G FLS and have not found it useful , the bottom is depicted in a brown color and moving forward I have brown spikes appear in front of the boat as well as elevated bottom depictions that disappear as quickly as they appear. Frustrated I just stopped even ever turning it on ,forgot to even use it once in six months while in the Caribbean. But before this thread goes away ,I have one question. Is it important to keep your SOG very slow to get good results from a FLS ? I think I have tried to use it going less than a 4 or 5  kts. , but maybe that is too fast. It would be great to have in the Bahamas some day ,if it worked.
Thanks,
Pat 
SM Shenanigans


-----Original Message-----
From: Danny and Yvonne SIMMS <simms@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Oct 1, 2020 3:33 am
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Hi All, I say all because this thread has certainly created interest. We have the Interphase FLS. Like radar and  it seems many other FLS units it needs experience and interpretation. I find it useful and last year in Fiji it saved us from a serious situation. The biggest problem is surface clutter caused by the turbulence of choppy water but with experience it is possible to get useful interpretation. It needs to have all the parameters set right. In talking to other owners with the same unit it is clear that many have not persevered and have given up.
Regards
Danny
SM 299
Ocean Pearl
On 01 October 2020 at 08:58 Stefan Schaufert <mail@...> wrote:

Dear Amelians,

thx a lot for your numerous helpful responses.

For the Amels with the Echopilot 2D units AND the B&G Sonic Speed Sensors and/or Depth Sounders (Standard on the AMEL 54):
  1. Are there problems or something needs to be considered because of the working frequency (200 kHz) of the Echopilot unit - used at the same time as the B&G devices (interferences)?
  2. Where is your Echopilot transducer situated on the bottom? Echopilot recommends to install it „alongside the keel and perhaps 60cm or 2 feet out“. 
I do not find any informations for this in the B&G & Amel manuals.
Thus I am looking forward for your answers.

Best regards
Stefan
A54 #119 Lady Charlyette, Aruba


--
Justin Paulsen
IT Professional

"The world is open, are you?"


Re: Volvo 24v alternator exciter

Mike Ondra
 

Most helpful Ryan. This makes sense and gives me good direction towards troubleshooting.

I would never have postulated that the relay would reach back to the house 24v batteries for its excitation.

Mike

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Ryan Meador
Sent: Thursday, October 1, 2020 3:09 PM
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

Hi Mike,

  1. The exciter relay coil is powered by 12V from the ignition switch, and when energized applies 24V from the house bank (via the indicator bulb) to the alternator.
  2. If the alternator has been recently used, there may be enough residual magnetism for it to self-excite.  The symptoms are exactly as you describe -- it will start working at higher RPM, and keep working even if you lower the RPM again.  But if left unused for long enough, the magnetism will fade and you'll have a dead alternator.
  3. I'm not sure of the exact wiring, but I was under the impression that this is simply a light bulb in series with the exciter wire.  There may also be a diode in there so that it will turn off when the output voltage rises.
  4. I believe so, but I think the exact implementation depends on your alternator model.

Ryan and Kelly

SM 233 Iteration

Boston, MA, USA

 

 

On Thu, Oct 1, 2020 at 2:42 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Attachments:


Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Danny and Yvonne SIMMS
 

Hi Ken, until you have sailed the Tuamotus you cant imagine how uncharted reefs and bommies can appear, rising vertically from very deep water. The FLS is useful there. Fiji has its own specialties with vertical reefs and no warning. Like all navigation aids, the FLS is one but not to be the only.one used; Charts, eyes, chart plotters too. In  those waters all my senses are on high alert all the time.

Regards

Danny

SM 299

Ocean Pearl

On 02 October 2020 at 06:27 Ken Powers SV Aquarius <ken@...> wrote:

All,

When I was in the  Tuamotus we were crossing the interior of Makemo Atoll from the main town to the East anchorage.  We were going 6kts in 50m and we saw the reef come straight out of the blue and we were able to stop Aquarius.

If we didn't have the Echo Pilot 2D Professional onboard we would have hit.

Ken


Re: Forward looking Sonar - Amel 54 - Furuno NavNet Plotter Network

Danny and Yvonne SIMMS
 

Thanks Ken, we have the Interphase which I believe is out of production now. The biggest difficulty in interpretation is the interference caused by choppy sea. However, having said that, with experience and using the right parameters valuable information is there. I was interested to find what unit you were using in case at some time I might need to replace the Interphase.

Thanks again

Danny

SM 299

Ocean Pearl

On 02 October 2020 at 06:08 Ken Powers SV Aquarius <ken@...> wrote:

Danny and Yvonne,

Aquarius has a Echo Pilot 2D Professional.  It does have a stand alone display, and I like it that way.

Best,

Ken Powers
Aquarius
SM2K#262


Re: Water maker Questions

John Clark
 

Hi Mark,
  As Bill says the Dessalator is a good design.   There are parts available and support form Amel and the Amel Owners Group, I would suggest sticking with it and doing a ground up rebuild

When I bought Annie (SM37) the previous owners had not used the watermaker in over eight years so it was a known project. I suspect your watermaker may be in a similar state.  The good news is that it is fixable with a little bit of time and patience.  I recovered my watermaker replacing the membranes, the membrane endcaps (precautionary as they were original and had stress cracks) and the high pressure hoses(also a precaution).  The pump needed to be disassembled and cleaned before it would build pressure but it was pretty easy to do.  Once back together she ran fine.  It sounds like your pump is functioning so you are probably good there.

The worst issue with the Dessalator was the early control system which as you found out does not actually test the water quality.  I deleted that whole bit of junk and test the water myself before sending it to the tank. I currently have the product water discharging to a free hose that I allow to flow into the cockpit when the unit runs.  I sample with a portable TDS tester then put the hose into the fill nozzle when it is good quality. Nothing goes into the tank without monitoring. I think Bill suggests doing that somewhere below.  That is the best way to ensure your getting good water. And that can be very important if you are underway relying on your tank for potable water.   One bad batch from the WM and poof you have no water at all.

To get SW into your tank you either have a bad o-ring or the membranes have been damaged.  Ether way replace the membranes and o-rings and you are good, and will know for sure the condition of the membranes.

Thoughts:
I installed my membranes in 2017, they are still running just fine.  Run the WM every once in a while for a few hours, never pickled it.   If the boat will be idle, I flush them with fresh water.
Check the end caps on your membrane vessels for signs of cracking.  I think Dessalator has new material available now that won't become brittle.
When you reassemble, watch your hoses when the unit is running, make sure they are not rubbing on anything.
Verify the pressure gauge is reading correctly.  My gauge is not the red/green version but read in Bar.  It is reading 15Bar higher than actual.
Change pressure slowly.  Both up and down.
Run the unit with no pressure to flush the concentrated brine out of the system after you are finished making water.
 I bought a solenoid valve to be able to test the water at the galley sample port and then flip a switch to sent it to the tank.  That is a better solution, but I have been lazy.  
Portable TDS /conductivity testers are cheap and available online.  

Regards,  John Clark
SV Annie SM 37
St Thomas USVI

  






A couple of suggestions


Re: Anyone know who owns Triton?

John Clark
 

Hi Rob, I know the owner.  What's up?


Re: Volvo 24v alternator exciter

Ryan Meador
 

Hi Mike,
  1. The exciter relay coil is powered by 12V from the ignition switch, and when energized applies 24V from the house bank (via the indicator bulb) to the alternator.
  2. If the alternator has been recently used, there may be enough residual magnetism for it to self-excite.  The symptoms are exactly as you describe -- it will start working at higher RPM, and keep working even if you lower the RPM again.  But if left unused for long enough, the magnetism will fade and you'll have a dead alternator.
  3. I'm not sure of the exact wiring, but I was under the impression that this is simply a light bulb in series with the exciter wire.  There may also be a diode in there so that it will turn off when the output voltage rises.
  4. I believe so, but I think the exact implementation depends on your alternator model.
Ryan and Kelly
SM 233 Iteration
Boston, MA, USA


On Thu, Oct 1, 2020 at 2:42 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Image removed by sender.

CW Bill Rouse Amel Owners Yacht School

Address: 720 Winnie, Galveston Island, Texas 77550 

Image removed by sender.Image removed by sender.Image removed by sender.

 

View My Training Calendar

Image removed by sender.

 

 

On Sat, Sep 26, 2020 at 1:57 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

24 V alternator recently requires higher RPM before producing voltage. Any suggestions about where to start troubleshooting? Exciter circuitry? Thanks!
Mike Ondra
Aletes SM240




Attachments:


Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

Wolfgang Weber
 

Jose,
That is a great news to use the FLS transducer in the B&G through hull and use the B&G inside the hull.
I would like to have the B&G FLS and use it as a second chartplotter with navionics charts.
This could also bring wind and speed to the system with navigation tools.
I have cmap on my Furuno Navnet and Maxsea and discovered some places where navionics on my tablet helped a lot at the US-eastcoast and Bahamas .
Greetings from home in germany to everyone, Boat is still in Fort Lauderdale, borders to US are closed for people from EU/Schengen
Wolfgang Weber SY Elise Amel 54#162


Re: Volvo 24v alternator exciter

Mike Ondra
 

Hi Bill.

 

Thanks for this info and pictures.

 

Operationally at this point, at startup we are not getting 24v alternator output until about 2000-2200 rpm. Then backing down rpm continue with 24v output until about 1200 rpm, and below that not. I have not yet tracked the behavior of the fault light on the 24v panel in these various conditions.

 

I am still trying to understand the circuit logic for the exciter. I cannot find any circuit diagrams for this and I am not at the boat to trace the circuitry. The internet is not providing much relative to exciter theory or engines with both 12v and 24v  systems. Any insights you have on the following would be helpful.

 

  1. Since the 24v alternator is not producing 24v at startup, is the 24v alternator exciter circuit initially powered by the 12v battery (simultaneous with the 12v alternator), or by the 12v alternator after it is producing its 13.5v? There could be a design theory that the 24v alternator is excited by and only AFTER the 12v alternator is producing 13+ volts thereby reducing startup load slightly.
  2. Is it the case that the 24 alternator would be “self-exciting” after generating 24v? If so, is that “self-exciting” dependent on rpm? And if so would this relay drop out the external 12v power for the exciter?
  3. I have noticed that the alternator fault light on the 24v panel historically stayed on after starting the engine while at low rpm, but generally went out after a small increase in throttle. This probably indicates that the 24v alternator was not yet producing 24v. Is the control logic for this fault light any more complicated than that?
  4. Is the exciter circuitry independent of and unrelated to the voltage regulator?

 

Anyway, I look forward to returning to Aletes in a few weeks to pursue this and would like to be as knowledgeable as possible if you have any thoughts.

 

Thanks,

Mike

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Sent: Sunday, September 27, 2020 9:53 PM
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Volvo 24v alternator exciter

 

There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:

Image removed by sender.

CW Bill Rouse Amel Owners Yacht School

Address: 720 Winnie, Galveston Island, Texas 77550 

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View My Training Calendar

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On Sat, Sep 26, 2020 at 1:57 PM Mike Ondra via groups.io <mdondra=verizon.net@groups.io> wrote:

24 V alternator recently requires higher RPM before producing voltage. Any suggestions about where to start troubleshooting? Exciter circuitry? Thanks!
Mike Ondra
Aletes SM240





Re: Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

James Alton
 

Ken,

   That is a heartstopping event to even ponder!  I can see why you appreciate the Echo Sounder as much as you do.  One question.  Is there an alarm on this unit or do you have to be watching the screen to be alerted to a coming depth change?  

James
SV Sueno
Maramu #220


-----Original Message-----
From: Ken Powers SV Aquarius <ken@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Oct 1, 2020 1:27 pm
Subject: Re: [AmelYachtOwners] Forward looking Sonar - Amel 54 - Echopilot FLS 2D frequency vs B&G Sonic Speed Sensors or Depth Sounders

All,

When I was in the Tuamotus we were crossing the interior of Makemo Atoll from the main town to the East anchorage.  We were going 6kts in 50m and we saw the reef come straight out of the blue and we were able to stop Aquarius.

If we didn't have the Echo Pilot 2D Professional onboard we would have hit.

Ken