Date   

locked Re: Batteries starting to get weak - MMM - What to do -

Sheriffdep
 

Arno,

Can you explain further the BMS BB communication issues? 

Am I wrong in saying Most drop in sets have the BMS? I know you can make the cells yourself and then add outside BMS but thought the self contained ones all came with them. 

My thoughts  -  Making a custom system and filling the battery box on the SM2k and having a ton of amp hrs avaialable seems easily doable. However, not done the math, but I think financially it wouldn't be that drastic of a savings to where I would want to lets say risk the investment. Everyone has their own risk tolerance. Like a lot of the china made current batts they range from $550-800 where the BB are $850-950. Seems the BB are the most robust and best made so since this is a 15-30yr investment that little amount is peanuts overall.  

Either custom setup or OEM drop ins with the available space I do want to maximize the amp hrs usable. I will be a heavy user for sure and don't want to run the gen. Any ideas or places to research?? 

Thanks, I hope this helps others along with me


locked Re: Batteries starting to get weak - MMM - What to do -

Arno Luijten
 

Hi Sheriffdep,

It depends what you call a LiFePO battery. But I can tell you without a doubt that the (prismatic) cells you can buy at AliExpress and other sites have no BMS build in.
Having a BMS overseeing the full battery bank is useful for cell balancing. Mastervolt is/was using Chinese Wilson cells in their batteries with a proprietary BMS on top of it enabling it to communicate with other Mastervolt stuff across the Masterbus interface. Very nice but very expensive.

This is my biggest problem with Battle Born batteries. You cannot have sensible interfacing with other systems.
Lithium batteries like to be kept between 20 and 75% state of charge if you have extended charging facilities (i.e. shore power) . The voltage alone makes it very hard to determine the state of charge when a system is at use. Basically you need a Coulomb counter to see the SOC at any point in time. Ideally your BMS should provide you with this information and adjust the float voltage of any charging device in such way it can maintain a desired SOC after bulk charging. Given the different sources of charge you can have on a boat this is not so simple.

Personally  I'm still looking for a BMS that can handle this task without me having to reconfigure everything every time I go out sailing. But I'm on shore power most of the time.

Kind Regards,

Arno Luijten
SV Luna,
A54-121


Re: Zoom meeting - QSails owner/manager will present sails for Amels - Sat, 09/12/2020 20:00-21:00, Please RSVP #cal-reminder

 

Earlier today, I discussed the upcoming meeting with the owner of QSails. He is going to present a video tour of his facility and has some simple-to-use graphic information to aid you in choosing the right sailcloth for your Amel.

 Bill
CW Bill Rouse Amel Owners Yacht School
Address: 720 Winnie, Galveston Island, Texas 77550 
View My Training Calendar


On Thu, Sep 10, 2020 at 3:00 PM main@AmelYachtOwners.groups.io Calendar <main@amelyachtowners.groups.io> wrote:

Reminder: Zoom meeting - QSails owner/manager will present sails for Amels

When: Saturday, 12 September 2020, 20:00 to 21:00, (GMT+00:00) UTC

An RSVP is requested. Click here to RSVP

Description: Time will be 2000 UTC.

Over 60 Amel owners have purchased sails from QSails, Izmir, Turkey. QSails has shipped these sails worldwide. Emrah Oge, owner, manager, and avid sailor will present how sails are made and some key points to be aware of in the selection of sails for your Amel. 

QSails offers very fast shipments of sails for many Amel models. In fact, many Amel sails are actually shipped from pre-made stock at QSails.

To ensure that you get the best quality and the best price, QSails and Amel owners have designed 3 simple choices for you of Good, Better, and Best:

GOOD - CrossCut AP Dacron is a quote for budget-minded Super Maramu owners who would like a Dacron polyester cross-cut sail similar to what Doyle Sails provides.
BETTER - TriRadial Cut Pro Radial Dimension/Polyant Dacron is a quote for those owners wanting a very high-quality Dacron Polyester fiber sailcloth from the German company Dimension-Polyant. It is cut and assembled in a TriRadial configuration. This is a slightly higher quality sail with the same TriRadial construction that your Super Maramu had when new.
BEST
- HydraNet TriRadial Cut is a quote for TriRadial Cut HydraNet from the German company Dimension-Polyant. I consider Dimension-Polyant the best sailcloth manufacturer in the world, and HydraNet the best sailcloth...it will not stretch.

Zoom link for the meeting:

Topic: AYOG Monthly Zoom Meeting: QSails

Time: Sep 12, 2020 20:00 Greenwich Mean Time

Join Zoom Meeting

https://epfl.zoom.us/j/94687396754

Meeting ID: 946 8739 6754

Link for the Youtube stream: https://youtu.be/nQob9dJu3RE

 


locked Re: Batteries starting to get weak - MMM - What to do -

Paul Osterberg
 

I ordered 16x270 Ah prismatic cells from China for a DIY system, guess i get them 5-6 weeks from now, That will give me 540 Ah 24 volt, probably go for a rec BMS (compatible with Victron system), will make video and post on the forum when ready. Will take ample time for installations as it is a few cables that I will replace and tidy up when I'm at it. For the one who use drop in, make sure they not only rated to run your bowthruster but also capable in real life, in some drop in the internat cables and BMS are not for high loads. can recommend Will Prowse on youtube very illustrative and easy to follow, he have teared a few drop in batteris apart and had a look what was inside, some of them you do not want to have onboard.
Paul on SY Kerpa SM#259, lags, Portugal sykerpa.com


Zoom meeting - QSails owner/manager will present sails for Amels - Sat, 09/12/2020 20:00-21:00, Please RSVP #cal-reminder

main@AmelYachtOwners.groups.io Calendar <main@...>
 

Reminder: Zoom meeting - QSails owner/manager will present sails for Amels

When: Saturday, 12 September 2020, 20:00 to 21:00, (GMT+00:00) UTC

An RSVP is requested. Click here to RSVP

Description: Time will be 2000 UTC.

Over 60 Amel owners have purchased sails from QSails, Izmir, Turkey. QSails has shipped these sails worldwide. Emrah Oge, owner, manager, and avid sailor will present how sails are made and some key points to be aware of in the selection of sails for your Amel. 

QSails offers very fast shipments of sails for many Amel models. In fact, many Amel sails are actually shipped from pre-made stock at QSails.

To ensure that you get the best quality and the best price, QSails and Amel owners have designed 3 simple choices for you of Good, Better, and Best:

GOOD - CrossCut AP Dacron is a quote for budget-minded Super Maramu owners who would like a Dacron polyester cross-cut sail similar to what Doyle Sails provides.
BETTER - TriRadial Cut Pro Radial Dimension/Polyant Dacron is a quote for those owners wanting a very high-quality Dacron Polyester fiber sailcloth from the German company Dimension-Polyant. It is cut and assembled in a TriRadial configuration. This is a slightly higher quality sail with the same TriRadial construction that your Super Maramu had when new.
BEST
- HydraNet TriRadial Cut is a quote for TriRadial Cut HydraNet from the German company Dimension-Polyant. I consider Dimension-Polyant the best sailcloth manufacturer in the world, and HydraNet the best sailcloth...it will not stretch.

Zoom link for the meeting:

Topic: AYOG Monthly Zoom Meeting: QSails

Time: Sep 12, 2020 20:00 Greenwich Mean Time

Join Zoom Meeting

https://epfl.zoom.us/j/94687396754

Meeting ID: 946 8739 6754

Link for the Youtube stream: https://youtu.be/nQob9dJu3RE

 


Re: Hose in holding tank

Ann-Sofie, S/Y Lady Annila
 

Nope, not at all. 

Regards
Ann-Sofie 


Skickat från min iPhone

10 sep. 2020 kl. 18:24 skrev Paul Osterberg <osterberg.paul.l@...>:

Lady Annila Thank you!
Now I understand, not very user friendly solution, not very Amel at all.
Paul


Re: Hose in holding tank

Paul Osterberg
 

Lady Annila Thank you!
Now I understand, not very user friendly solution, not very Amel at all.
Paul


Re: Hose in holding tank

Germain Jean-Pierre
 

Paul, to avoid build up, we pump out the bowl fully then flush with  minimum of 25 strokes. 

We also use a mild acid solution to clean out this pipe when on the hard. 

Jean-Pierre Germain, Eleuthera, SM 007


On 11/09/2020, at 5:09 AM, Annsofie & Jonas Svanberg <ann-sofie@...> wrote:

It is possible. It takes a lot of black words though 😄.
Use whatever tool you have to loosen the copper tube from the plastic. It is not screwed inplace more like glued in place.

Regards
Ann-Sofie & Jonas
S/Y Lady Annila, SM232, 1998


Skickat från min iPhone

10 sep. 2020 kl. 17:38 skrev Paul Osterberg <osterberg.paul.l@...>:

I have build up in the hose inside the holding tank. To me it looks as magic, how did the mount that one? Is it possible to replace? How?
Paul on sykerpa SM 259, Lagos Portugal 
<IMG_20200909_100821.jpg>


Re: Oil Pressure Volvo D3 I - C

Rudolf Waldispuehl
 

Thank you for your reports to the forum. I can absolutely support Arno and Mohamad
Our 110-IC is still running strong and has been very reliable with over 3000 hours. Touch wood ;-)

Fair winds
Ruedi & Sabina Waldispuehl
WASABI 
A54-#055


Re: Scuba compressor recommendations

Porter McRoberts
 

We bought a used Bauer Junior II. 230/50hz. Wired it directly to the breaker board.  We keep it in the port side cockpit lazarette and run it in the cockpit. The coolest, shadiest most well ventilated spot.  They last forever, and are built to be used commercially filling tanks all day every day. 
It’s heavy, but bulletproof, filters are actually getting cheaper with time and easily found. Very minimal maintenance, and easy to use. 
Many put them in the ER. We simply have no room down there. 

Pretty amazing to dive in the most out of way places. West coast of Ua-Pou. Palmerston. Hapai group Tonga. This am White valley in Tahiti: went yesterday, probably one of the best dives of my life, but easy to get your tank filled in Tahiti!  Best of luck!



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

On Sep 10, 2020, at 6:18 AM, Arlo <svplanb@...> wrote:

hello all, I plan to install a SCUBA compressor to fill the tanks and it will run using my 5.5 kw genset. Looking for recommendations on makes and model from those that have them onboard. 


Re: Hose in holding tank

Ann-Sofie, S/Y Lady Annila
 

It is possible. It takes a lot of black words though 😄.
Use whatever tool you have to loosen the copper tube from the plastic. It is not screwed inplace more like glued in place.

Regards
Ann-Sofie & Jonas
S/Y Lady Annila, SM232, 1998


Skickat från min iPhone

10 sep. 2020 kl. 17:38 skrev Paul Osterberg <osterberg.paul.l@...>:

I have build up in the hose inside the holding tank. To me it looks as magic, how did the mount that one? Is it possible to replace? How?
Paul on sykerpa SM 259, Lagos Portugal 
<IMG_20200909_100821.jpg>


locked Re: Batteries starting to get weak - MMM - What to do -

Sheriffdep
 

Elja,   I am pretty sure ALL lifePo4 batteries have a built in BMS inside the casing. So each battery has one. You would NOT want one for a whole bank from what I understand. If that were to malfunction then you could lose the whole system rather than just one battery. The BMS is what regulates the charging and making sure all cells charge up evenly. 


Hose in holding tank

Paul Osterberg
 

I have build up in the hose inside the holding tank. To me it looks as magic, how did the mount that one? Is it possible to replace? How?
Paul on sykerpa SM 259, Lagos Portugal 


Scuba compressor recommendations

Arlo
 

hello all, I plan to install a SCUBA compressor to fill the tanks and it will run using my 5.5 kw genset. Looking for recommendations on makes and model from those that have them onboard. 


Bowthruster motor switch

Peter Tiner
 

Hi

We need to put in a new bow thruster motor (Sleipner). We had a Sleipner technician looking at it and sent us a new motor. So far everything looked alright but when our technician loosened the motor and lifted it, the driveshaft came along a bit, maybe 20cm. Now he can’t get it back. 

We believe the original Sleipner shaft is lengthened  just above the gearbox with a keyway (proper English word?) and now the key is somehow disorientated

Has anyone had this problem or tried switching motor without getting out of water?

\Peter sy Maiken A54 #52


Re: Dessalator Watermakers & Filmtec Membranes

Patrick McAneny
 

Craig, I should not have used psi to convey what I meant, I always operate my W/M  at the low end of the green zone in salt water, and in fresh water the couple of times I have ran it just to be sure it was functional ,I kept the pressure slightly below the green zone. I don't even know what the psi is at the green zone . I just made sure that it did not go into the green or exceed normal water production level. Once again I only ran it for a short period to confirm functionality .
It obviously takes less psi to push fresh water thru the membranes and that is what I was trying to convey and was warned about by the manufacturer. Having said that ,he said providing you don't exceed the pressure limits ,it was fine to use your W/M in fresh water ,and many do.
Thanks,
Pat


-----Original Message-----
From: Craig Briggs via groups.io <sangaris@...>
To: main@AmelYachtOwners.groups.io
Sent: Thu, Sep 10, 2020 1:13 am
Subject: Re: [AmelYachtOwners] Dessalator Watermakers & Filmtec Membranes

Hi Pat,
If you run 800 psi in fresh water you will definitely damage your membrane. You want to limit the product water flow to that rated for the membrane in terms of LPH or GPH, definitely not the 800 +/- PSI for ocean water.  
Your sentence about "keep it a little lower and warning that it will get up to "max" more quickly" is telling - "max" is the maximum flow for the membrane, and that is reached at very low pressure in fresh water. The words "keep it a little lower" are hugely understated, as 200-300 psi is typically the fresh water range.  Actually, household RO systems operate without any pump at all, just the water service pressure in the range of 35 psi or so. 
--
SN68 Sangaris, Tropic Isle Harbor, FL


locked Re: Batteries starting to get weak - MMM - What to do -

Elja Röllinghoff Balu SM 222
 

Ken
i ask Victron for his batteries a BMS for all batteries
There is my concern if this fails and it is not noticed all batteries damaged if each battery has a BMS is only one damaged.

Elja

Von meinem iPhone gesendet


locked Re: Batteries starting to get weak - MMM - What to do -

Sheriffdep
 

Elja,

Each LifePo4 battery has some type of BMS. Most are internal. IT manages the charge and draw down for each of the cells inside it. Prevents overcharging, prevents draining the battery, and makes sure the cells are evenly charging and discharging among other things. ALL BMS's are not equal. There are quality issues with many on the market. 


locked Re: Batteries starting to get weak - MMM - What to do -

Elja Röllinghoff Balu SM 222
 

He Ken
So i think shout prevere 24 V batteries with a BMS on each batterie ?? Is it right ?

Thanks
Elja
SM Balu 222

Von meinem iPhone gesendet


Re: Dessalator Watermakers & Filmtec Membranes

Craig Briggs
 

Hi Pat,
If you run 800 psi in fresh water you will definitely damage your membrane. You want to limit the product water flow to that rated for the membrane in terms of LPH or GPH, definitely not the 800 +/- PSI for ocean water.  
Your sentence about "keep it a little lower and warning that it will get up to "max" more quickly" is telling - "max" is the maximum flow for the membrane, and that is reached at very low pressure in fresh water. The words "keep it a little lower" are hugely understated, as 200-300 psi is typically the fresh water range.  Actually, household RO systems operate without any pump at all, just the water service pressure in the range of 35 psi or so. 
--
SN68 Sangaris, Tropic Isle Harbor, FL

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