Date   
Re: [Amel Yacht Owners] Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

Gregory Shea
 


Rob, 

Take a look at  UHMW (ultra high molecular weight polyethylene). It is readily available and easy to work. It is commonly used for sliding applications industrially. One of its fairly rigorous applications is the sliding contact under the work platforms of JLG scissor lifts. 


Greg Shea
Sharki 133 Cap des Iles



From: amelyachtowners@... on behalf of rob.molly@... [amelyachtowners]
Sent: Friday, February 2, 2018 3:12 AM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54
 
 

Thanks Hank,


Yes you're right all the technical papers that I've found show equilibrium for the most common Nylons i.e. Nylon 6, Nylon 66 and Nylon 610 at 50%/60% humidity. The equilibrium is achieved after more than 100 days There is no information when the humidity is frequently over 80% plus exposure to salt water, as it is in La Rochelle where the boat has spent a lot of time and where it's moored today with the humidity at 88%.  The figure appears to be more than 5% water take-up but, and this is the most annoying part that, it continues to swell with a unit that has previously been machined.

The fact is that swelling has happened repeatedly showing that it is a continuing process.  The swelling must stretch the material and it does not appear to recover original dimensions on drying then swelling again later.

HDPE and moulded PTFE are contenders and maybe use the old fashion solution of Lignum Vitae.  Some tangible cooperation from Opacmare would be helpful.  They haven't even advised which Nylon they use  and clearly not considered at all an alternative.

All this bother with a product that cost the price of a good small car when new!

Re: [Amel Yacht Owners] Wet Cell Batteries

Duane Siegfri
 

Dan,

Thanks for the informative reply.  

I had tried to upload a spreadsheet with our SG readings in it, but Yahoo was acting up.  I tried again in this reply, but it won't upload the attachment.  The average SG was 1.226 with a low cell of 1.215 and a high cell of 1.445.  

I think I'm probably going to have to remove the pair that has the low SG reading battery in it from the wiring.  I won't pull the batteries out of the box since they make for a nice tight fit.

The batteries were new in August of 2016, so they're less than two years old.  The next time I replace the batteries, I'm going to replace the charger as well.  Having a charger that will equalize the batteries, and has adjustable charging voltages, only makes sense.  The cost of the battery charger is about equal to new batteries so it's an investment, but we plan to keep the boat a few more years.

I'm still wondering when you replace the entire suite of batteries?  The lower limit of the "fair" range on my SG tester is 1.210 so I guess that's the trigger for replacement?

Replacing the charger with a charger/inverter, the inverter will be a boon for AC for the microwave and outlets (i.e. popcorn and computer charging anytime you want to!).  I don't expect my third Xantrex Prosine 1800 watt inverter to last any longer than the first two did (replaced sequentially under a two year warranty).

Thanks again,

Duane
Wanderer, SM#477

Re: [Amel Yacht Owners] Wet Cell Batteries

Dan Carlson
 

Hi Duane,  I also have the DEKA group 31 Marine Master batteries (DC31DT) , installed December 2016. I am not an expert, but can only relate my specific experience.

After 6 mos on the hard in Trinidad this summer I was down to 1mm of electrolyte over the cells. It took over 3 gallons to get the 12 batteries back to the mark.  Initially, 5 of the batteries tested "bad" with very low CCA results and overnight the voltage would drop to 24.6- 24.7 volts with only about 45 amp hrs consumed.  

But over time, with "excercise" they have regained some performance.  They charge well, and now test over 650CCA per battery, and the fully charged electrolyte SG ranged from 1.240 to 1.260, with most at 1.250.  And the drop in the SG in the over night is about 0.010.  Last night we used 55 amp/hrs overnight and the voltage was 24.9 at 6:30am. I am trying to see if I can recover a bit more performance.  

I have 405 watts of solar. The MPPT is set to 28.2 absorb and 27.2 float.  I think 27.6 might be a bit high.  When I left to boat on the hard with no load it would still start each day with 28.2 for an hour, that was not good. And by my calculations, even the 27.2v float was to high for the hot on shore temperatures.

DEKA does have a pretty good manual for care for their industrial batteries, and they also answer their technical support phone +1 610 682 4231.
Here are some of the specs that they gave me:
  - bulk/absorb - up to 29.2v 
  - float - 13.5v 
  - equalization - 31.5v until voltage stabilizes 

I also have the Dolphin chargers without equalization capability.  For me, it seemed that discharging the bank down to about 80 - 85% of the theoretical capacity and then fully recharging with the 100amp charger gave me noticeable improvement in overnight voltage drop.

Perhaps that helps.

Regards, Dan Carlson on sv BeBe,  SM#387





On Tue, Jan 30, 2018 at 10:40 PM, sailor63109@... [amelyachtowners]
wrote:
 

I'm trying to understand the condition of our house battery bank.  I'm definitely not a battery expert.  We have the original Dolphin Battery Chargers (100A and 30A).  We use the 30A at the dock and the 100A with the generator.  We also have a Victron Blue Solar 100/30 with 630 watts of solar panels.  The installer set it at 28.8V Absorption and 27.6V Float (Position 2).


First:  The 12 Group 31 house batteries use about 0.5 gallons/month...is that excessive?  I'm wondering if the MPPT controller is overcharging the batteries.


Second:  How close to replacement are we?

I checked the specific gravity of all cells recently (see the attached spreadsheet).  I read that a new, fully charged cell should be at 1.265, and is discharged at a SG of 1.120.  The best cell tested at 1.265 and the weakest cell at 1.145 (corrected for temperature).  The average SG of all cells was 1.226.  This SG corresponds to 75% state of charge from what I read.  At SG of 1.190 the battery is at 50% SOC and battery #3 has three cells in that range.


Third:  Should I just replace Battery #3?


Fourth:  I've read that when the difference between cells in a battery is greater than 0.03,0 the batteries would benefit from equalization.  My Dolphin chargers are not adjustable (at least as far as I can tell).  The MPPT has an equalization function that will run for an hour.  Will that be sufficient?


Thanks for your input,

Duane 

Wanderer, SM#477

Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

amelfango
 

Thanks Eric,

As often is the case you have a good suggestion.  Delrin looks like a good suggestion.

Nylon certainly appears not to be a good choice .  The problem is probably aggravated by long periods when the passerelle in not used.

Thanks again

Rob

Re: [Amel Yacht Owners] Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

eric freedman
 

I had a similar problem with the bearings in the rudder shaft  of my Tartan 37.

I had new bearings made out of delrin and had no further problems , after sailing her over 15,000 miles.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Friday, February 02, 2018 3:12 AM
To: amelyachtowners@...
Subject: [Amel Yacht Owners] Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

 

 

Thanks Hank,

 

Yes you're right all the technical papers that I've found show equilibrium for the most common Nylons i.e. Nylon 6, Nylon 66 and Nylon 610 at 50%/60% humidity. The equilibrium is achieved after more than 100 days There is no information when the humidity is frequently over 80% plus exposure to salt water, as it is in La Rochelle where the boat has spent a lot of time and where it's moored today with the humidity at 88%.  The figure appears to be more than 5% water take-up but, and this is the most annoying part that, it continues to swell with a unit that has previously been machined.

 

The fact is that swelling has happened repeatedly showing that it is a continuing process.  The swelling must stretch the material and it does not appear to recover original dimensions on drying then swelling again later.

 

HDPE and moulded PTFE are contenders and maybe use the old fashion solution of Lignum Vitae.  Some tangible cooperation from Opacmare would be helpful.  They haven't even advised which Nylon they use  and clearly not considered at all an alternative.

 

All this bother with a product that cost the price of a good small car when new!

Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

amelfango
 

Thanks Hank,

Yes you're right all the technical papers that I've found show equilibrium for the most common Nylons i.e. Nylon 6, Nylon 66 and Nylon 610 at 50%/60% humidity. The equilibrium is achieved after more than 100 days There is no information when the humidity is frequently over 80% plus exposure to salt water, as it is in La Rochelle where the boat has spent a lot of time and where it's moored today with the humidity at 88%.  The figure appears to be more than 5% water take-up but, and this is the most annoying part that, it continues to swell with a unit that has previously been machined.

The fact is that swelling has happened repeatedly showing that it is a continuing process.  The swelling must stretch the material and it does not appear to recover original dimensions on drying then swelling again later.

HDPE and moulded PTFE are contenders and maybe use the old fashion solution of Lignum Vitae.  Some tangible cooperation from Opacmare would be helpful.  They haven't even advised which Nylon they use  and clearly not considered at all an alternative.

All this bother with a product that cost the price of a good small car when new!

Re: Bow Thruster won't come up

greatketch@...
 

Yes, it is.

Bill Kinney
SM160, Harmonie 
Great Abaco Is, Bahamas

Re: Opacmare Passerelle sticking Jamming Nylon sliding support seized AMEL 54

Hank rose
 

Nylon swells a little as it absorbs moisture, maybe a different kind of plastic like PE (poly ethylene) or better still HD (high density) PE would be better?

Re: How to remove freezer compressor

amelfango
 

Hi Paul,

It's hard to know what's Jonnuck in the advice from Périgny these days.  So, if you wish, I'll ask  when I'm up there tomorrow, repairing the passerelle.  As an example nobody could advise me how to remove the dishwasher on a 54 nor which current model would fit.  It was not difficult and in case anyone needs to know the one I fitted with minimum readjustment was a BRANDT DFC6519S.  If anyone needs further information please ask.

Regards

Rob
 

Re: [Amel Yacht Owners] Re: Bow Thruster won't come up

Alexandre Uster von Baar
 

Good afternoon Duane,

I have been following your Bow Thruster issue.
I would have guessed the sensors as well…
I was going to write you, but since you check these already did not.
Here is what happen to me in 2014 (not 2012 as the date says):
http://www.nikimat.com/bow_thruster_sensor.html
Then you have more illustration:
http://www.nikimat.com/bow_thruster_command_box.html

Personally I purchase the sensors from Amel La Rochelle and Amel Martinique.
In Martinique the sensors were 88.13 Euro each
http://www.nikimat.com/factures/2014_12_22_Amel_Martinique_nikimat.pdf
In La Rochelle they were 24 Euro each
http://www.nikimat.com/factures/2014_12_23_amel_facture.pdf

Sincerely, Alexandre





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

On Thu, 2/1/18, sailor63109@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: [Amel Yacht Owners] Re: Bow Thruster won't come up
To: amelyachtowners@...
Date: Thursday, February 1, 2018, 4:18 PM


 









Paul,
Where did
you buy the sensor?
Duane

Re: Bow Thruster won't come up

Duane Siegfri
 

Is the motor and drive that raises and lowers the thruster and thruster motor a jack screw arrangement?

Duane

Re: Bow Thruster won't come up

Duane Siegfri
 

Paul,

Where did you buy the sensor?

Duane

Re: 24v Dessalator motor stops under pressure

Duane Siegfri
 

Paul,

By the way, to check if it's the pulley wheel, put it back together and stay next to the high pressure pump.  When the grating noise starts you'll be able to tell if it's the bendix bearing.  Your symptoms sound exactly like my issue, which was solved by changing to a solid pulley (no bearing).  

Another way to check if it's the bearing:  take the pulley off the HP pump that the 240V motor drives and compare how it rotates in both directions to the one from the 24 V motor.  It should turn freely in one direction (holding the inside hub still and rotating the outer wheel), and lock up in the opposite direction.  Be sure to have the direction of rotation correct when you remount the pulleys.

Duane

Re: 24v Dessalator motor stops under pressure

Duane Siegfri
 

Paul,

You have a failing "bendix bearing".  This is pressed into the large pulley on the High Pressure pump.  It's made to lock up in one direction and slip in the other direction (so that when the 240V motor is turning the pump it doesn't run the 24V pump backwards).  The 240V motor has one too.  You might as well order both (they are expensive!).  I tried having a new bearing pressed in, but they failed one after the other for three tries.  The bearing saleman told me the ones in the Dessalator were nothing special but they didn't work.  I even had a different shop press the last one in using the one he pressed out as a pusher.  My final solution was to buy a solid pulley (no bendix bearing) and attach only one pump.

You can order a new one from 
Mark Fruehauf                    
BALCEN             .                
58 Fore St Bldg. 30           
Portland, ME 04101
207 522 6737  Tel
 
Duane
Wanderer, SM#477

Re: [Amel Yacht Owners] Re: Perkins M 4.154 engine repairs, rescheduling trip

christian alby <calbyy@...>
 

Hello to rainy Hamburg
I would be interested in buying back your engine, complete with alternators (if you left them on) & inverter, as a back up to my my old faithful.
Offer a sale price for the engine (they go for minimum Euros 2K - were running but canibalised since they were sent ashor - to Euros 5 K for running condition ... I would offer 3 K as I have already paid  4 k for rebuilding my ole'faithful.
I would then organise with my freight forwarders fr pick up, packing (wooden frame & boxing), & road transport to the South of France .
please revert direct to my email adress calbyy@... not to bother other users on the forum with wheeling-dealing discussions.
regards
christian alby - Désirade VIII - Maramu 116 - now in Le Marin Martinique

Christian Alby - France home fixe +33 (0)5 34 39 06 02 home Internet +33 (0)9 60 37 22 72 mobile +33 (0)6 42 69 07 80


Le ‎jeudi‎ ‎1‎ ‎février‎ ‎2018‎ ‎15‎:‎09‎:‎26‎ ‎-04, we3lhwbwcrmyelobwgjzvrv3zpxsyelcww55jvcu@... [amelyachtowners] a écrit :


 

Hi Christian,

yes, it is a Maramu. The engine was in a running condition. It is now removed. Engine is still complete and currently with our local engine dealer here in Hamburg (Germany). If you are interested to get the engine I am just wondering how it could be organized. Please let me know your ideas and I will see what we could do.

Best regards from cold and rainy Hamburg

Maren

Re: Bow Thruster won't come up

Duane Siegfri
 

Nick,

I have the 53' Super Maramu.  The limit switches on my boat don't have buttons. They must be sensors that work on a magnetic basis.

Duane

Re: Perkins M 4.154 engine repairs, rescheduling trip

we3lhwbwcrmyelobwgjzvrv3zpxsyelcww55jvcu@...
 

Hi Christian,

yes, it is a Maramu. The engine was in a running condition. It is now removed. Engine is still complete and currently with our local engine dealer here in Hamburg (Germany). If you are interested to get the engine I am just wondering how it could be organized. Please let me know your ideas and I will see what we could do.

Best regards from cold and rainy Hamburg

Maren

24v Dessalator motor stops under pressure

ya_fohi
 

Hi,

I have a Dessalator duo 100. The unit runs fine in the 240v motor. When trying the 24v motor it stops suddenly after about a minute of the pressure being turned up, sometimes with a grating mechanical sound. The motor seems to run fine with the belt disconnected, and I can find nothing wrong with the pulley wheel.

Any suggestions most welcome!

Cheers,
Paul
Ya Fohi, Amel 54 #98


Re: Bow Thruster won't come up

kwzy6vgkpvtfohjddjsrotobzwf2pjeafjwalhur@...
 

Hi Duane,

I have had a similar problem on my 54. I have not yet got to the bottom of it but I believe it is the  top and bottom sensors that are not actually sensors. They are simply push button switches. When the frame is lowered it clamps down on the bottom switch. There are two cables on a toggle, and ditto at the top. This then sounds the alarm and stops the motor running.

I found that if I pressed them a few times by hand then it worked fine. So I suspect there is a poor/ intermittent connection within the button/toggle.

I reiterate I am not 100% sure about this. It is what I think

If you try this and it works then all you need is to order a new pair and a spare pair because I think this is a common fault.

I would love to know, as I have left my boat out of the water in Antigua whilst I am in the UK, and would order the parts if that is indeed the problem.

Nick

Amelia (54 #019)

Re: Bow Thruster won't come up

ya_fohi
 

Duane,
I recently had the problem of the down sensor not working, although I did not experience the same symptoms as you have described. Replacing the sensor solved the problem.

As regards raising the thruster without power I am told by Amel to connect a halyard to it and haul it up, although I have not tries that.

Cheers,
Paul
Ya Fohi, Amel 54 #98