Date   

Re: Bow thruster does not work in one direvtion

Alan Leslie
 

This thread has gone off topic .....but ......
There seems to be a bit of confusion between short high current demand and deep cycle capacity.
480A for 10 seconds has little relationship to 300Ah deep cycle capacity.
Bowthruster consuming 480A for 10 seconds is only 1.33 Ah, 2 seconds only 0.267 Ah, so battery capacity is not the issue.
Providing your cabling is big enough to handle the instantaneous current, and the CCA capacity of your battery bank is high enough (ours is around 3000 CCA) it should be no issue for Lead Acid batteries - think truck starter motors etc
However, I believe that high current draw can be an issue for LiFePO4 batteries under certain conditions.
We have a 7.5kVA Onan and run both the 100A charger and the 30A charger when using the bowthruster, as well as the 175A alternator on the main engine, just to try to reduce the demands on the battery bank.

Our 12 balanced AGM batteries are now 6 years old and show no signs of deterioration as yet.
We are not big electrical energy consumers - the frig and  freezers are our main continuous consumers, we use gas for cooking.
We generally don't daily discharge below 85% capacity and with our 600W solar array, wind generator, and short use of the Onan we get our battery bank to 100% every day.
On the dock, the Victron Skylla 100A charger is always on.

Cheers
Alan
Elyse SM437


Re: VHF antennas

Porter McRoberts
 

The Mizzen cable access is behind the light in the main head shower.  

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

On Jun 18, 2021, at 7:49 AM, ngtnewington Newington via groups.io <ngtnewington@...> wrote:

Hey Mark,
That would have been Jonathan.
We had a great passage to the Azores.
Yes it is a small world. I am nostalgic just thinking about all the  ocean  passages. Some easy and others not so, but  every one of them left me feeling fulfilled and perhaps thinking that the world is actually quite large, at least from the deck of a small boat.

Nick
SY Amelia 
AML54-019
Leros


On 17 Jun 2021, at 19:23, Mark McGovern <mfmcgovern@...> wrote:

Nick,

On the Super Maramu there is a removable panel in the aft head on the upper, inboard side of the forward bulkhead that give us access to the cables coming down the Mizzen mast including the AIS Antenna, Radar, Weather Fax, and Cockpit Light.  I don't know if it is the same on the 54.

I think I met your mate Kevin(?)  a few weeks back at Herrington Harbor North Marina in Deale, Maryland USA.  It's about 20 miles south of Annapolis.  He says he helped you sail Amelia across the Atlantic.  What a small world we live in!

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Re: Storage Hatch gaskets

 

Pat,

I really like what Amel is currently using on the Amel 50. It's the best thing I've seen. Photo attached. 

I am training a crew the week on a brand new 50. It is an amazing Amel.


Best,

CW Bill Rouse 
Amel Owners Yacht School
+1 832-380-4970 | brouse@...
720 Winnie, Galveston Island, Texas 77550 
www.AmelOwnersYachtSchool.com 
Yacht School Calendar: www.preparetocastoff.blogspot.com/p/calendar.html


   


On Wed, Jun 16, 2021, 7:56 PM Patrick McAneny via groups.io <sailw32=aol.com@groups.io> wrote:
Bill ,Just want to double check the size of the gasket. I had a look at mine and they are 1" wide ,but where they are not depressed ,at the edges they appear to only be about 1/2" in height and in the center that bears the weight they are depressed down to about  a 1/4" ,maybe 3/8' . I just wanted to make sure that they might not have been 1/2 or 3/4" in height originally .
Thanks,
Pat
SM Shenanigans


-----Original Message-----
From: CW Bill Rouse <brouse@...>
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Sent: Fri, Jun 11, 2021 4:57 pm
Subject: Re: [AmelYachtOwners] Storage Hatch gaskets

Pat,

They are "D Profile: and 25mm, or 1" I think the following will work for you:

image.png
CW Bill Rouse Amel Owners Yacht School
+1 832-380-4970 | brouse@...
Address: 720 Winnie, Galveston Island, Texas 77550 
View My Training Calendar


On Fri, Jun 11, 2021 at 2:37 PM Patrick McAneny via groups.io <sailw32=aol.com@groups.io> wrote:
I would like to replace the gaskets on all the storage hatches ,they are compressed and leaking somewhat. Does anyone know the dimensions and a source in the US. to buy them. I wonder if they have an adhesive backing or applied with contact cement, a backing would be less messy and easier.
Thanks,
Pat
SM Shenanigans


Re: VHF antennas

Nick Newington
 

Hey Mark,
That would have been Jonathan.
We had a great passage to the Azores.
Yes it is a small world. I am nostalgic just thinking about all the  ocean  passages. Some easy and others not so, but  every one of them left me feeling fulfilled and perhaps thinking that the world is actually quite large, at least from the deck of a small boat.

Nick
SY Amelia 
AML54-019
Leros


On 17 Jun 2021, at 19:23, Mark McGovern <mfmcgovern@...> wrote:

Nick,

On the Super Maramu there is a removable panel in the aft head on the upper, inboard side of the forward bulkhead that give us access to the cables coming down the Mizzen mast including the AIS Antenna, Radar, Weather Fax, and Cockpit Light.  I don't know if it is the same on the 54.

I think I met your mate Kevin(?)  a few weeks back at Herrington Harbor North Marina in Deale, Maryland USA.  It's about 20 miles south of Annapolis.  He says he helped you sail Amelia across the Atlantic.  What a small world we live in!

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Re: Amel 54, For those who do not really like the entrance hatch locking system

Jose Venegas
 

Hi Arno, I realize that with your modification, the point at which you can attach the line to the door is further away from the wall than in my case. where I simply attached it to the cross wood and tt is perhaps for that reason that the balance weight created more friction.  I think that if you extend the point of attachment to the right, the friction will be substantially reduced.  For this you may need to fabricate a plate to extend the point of attachment of the door towards the wall.

Jose Venegas
Ipanama  SM 278


Re: Amel 54, For those who do not really like the entrance hatch locking system

Jose Venegas
 

Hi Arno,
To avoid the weight from sloshing around I used the track that I mentioned to guide the weight along the vertical direction.  It is very smooth because it runs in roller bearings.  With this, the weight could only slush when the vertical acceleration of the boat is greater than 1G,  which should never happen.  It is true that the pull from one side of the door creates some friction but still much less than the weight of the door.  Also, that friction prevents a rapid fall of the door.  I am not sure that the weight of the 54's door is the same as that of the SM but there is still some room to increase the size of the weight if you need to.  Worth testing before making the counterweight

Jose Venegas
Ipanema SM278


Re: AML 54 mizzen antennas

Nicolas Klene
 

Hello Nick 
yes BLU stands for Bande Laterale Unique 
ie SSB !
voila !

--
Nicolas Klene
DarNico
SM2K # 471
In Marseille


Re: VHF antennas

Mark McGovern
 

Nick,

On the Super Maramu there is a removable panel in the aft head on the upper, inboard side of the forward bulkhead that give us access to the cables coming down the Mizzen mast including the AIS Antenna, Radar, Weather Fax, and Cockpit Light.  I don't know if it is the same on the 54.

I think I met your mate Kevin(?)  a few weeks back at Herrington Harbor North Marina in Deale, Maryland USA.  It's about 20 miles south of Annapolis.  He says he helped you sail Amelia across the Atlantic.  What a small world we live in!

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Re: VHF antennas

Nick Newington
 

Thanks Arno,
There never was an AIS system on the boat. I am installing a receiver now. For the moment I am using the main VHF to test it and it all works.
Now I just have to find the cable from the mizzen VHF antenna and we are done…
Nick
Amelia 
AML54-019
Leros

On 17 Jun 2021, at 16:51, Arno Luijten <arno.luijten@...> wrote:

The VHF antenna on the Mizzen is for your AIS system.


Re: AML 54 mizzen antennas

Arno Luijten
 

See here:

https://acronyms.thefreedictionary.com/BLU

BLU => Bande Latérale Unique (French: Single-Side Band)

Cheers,

Arno Luijten
SV Luna
A54-121


Re: Amel 54, For those who do not really like the entrance hatch locking system

Arno Luijten
 

Hi Jose,

I really like your idea. Very clever. I used to live in a house that had that system for the sliding windows.
For the boat it seems to have some additional challenges.
- How do you prevent the weight from sloshing around when the boat is in motion?
- I tried to support the weight of the hatch on one side but the hatch has the tendency to rotate slightly and prevent a smooth motion upwards as a result. What did you do to prevent that?

Cheers,

Arno Luijten,
SV Luna,
A54-121


Re: VHF antennas

Arno Luijten
 

The VHF antenna on the Mizzen is for your AIS system.


AML 54 mizzen antennas

Nick Newington
 


Further to my last email


So we have the triatic weather fax antenna.
Then there is a VHF type tall antenna?
And a stubby antenna?
Also what does BLU mean? Is it French for SSB ?
You can see that the starboard mizzen backstay has an isolator top and bottom so that is my SSB antenna.
Nick
Amelia
Leros
AML54-019


VHF antennas

Nick Newington
 

I am hoping that some group knowledge may help me.

I want confirmation that the antenna on the mizzen that looks like a VHF is actually a VHF antenna (spare)
Secondly I can not find the end of the cable from it to the chart table area. Any ideas?
Nick
S/Y Amelia
AML 54-019
Leros


Re: Motion Sickness

Alejandro Paquin
 

I agree with Trevor the posts on this subject is one of the best attempt to describe and explain one of the most mysterious maladies that affect sailors in general. Thanks to Bill for bringing the subject up and all that followed. I felt Scopolamine made me feel like a caffeine overdose and didn´t go well with me.I have found that Meclizine HCl works well for me and those in my crew that tend to get sick. I can suddenly become sick in calm nearly no wind situations, and survive rougher sea conditions. Still a mystery.
--
Alex Paquin
S/V " SIMPATICO"
Amel Maramu
Hull #94, 1981


Leece Neville alternator

Eloi Bamberg
 

Hello,I cant find any information about the "excitation type" of my Leece Neville 8RL3021 alternator. Does anybody know wehter it is a positiv or negativ excitation? I want to fit a Wakespeed WS500 on it.
regards,
Eloi 
SM2K 426 RedLion


Re: Bow thruster does not work in one direvtion

Nick Newington
 

It seams to me, for those of us with lead acid batteries. It is important to minimise the use of the bowthruster. Having owned other boats not fitted with BT’s and manoeuvred perfectly well this is easily achieved. Using maximum 2 second bursts of the BT should be enough.
If a two second burst is not going to be enough and a difficult situation is developing then I recommend having all chargers on and/or changing plans, because if one needs the BT and it has overheated not only have you damaged your battery bank, you have placed the boat in a potentially dangerous or damaging situation.
Nick
Amelia AML54-019
Leros (back in cruising mode)


On 17 Jun 2021, at 04:38, Danny and Yvonne SIMMS <simms@...> wrote:



Hi Ken, I guess this was to me since you refer to my Super Wind 350. I pretty well agree with all you said though the only thing I might question is the need for life po batteries but that is a matter of choice.

As I said I have not measured the current draw but when I am tight reaching in 30 Knots and I roll in part of my headsail under load there is a big power draw. However all that is irrelevant. I just provided the information as an observation.

The important information is 12 years, 8 years + life out of my lead acid batteries and never running the gen set for the bow thruster. I agree with you that with a motor at idle or near idle the output of any alternator would be minimal.

Of course it is important to note the fact that, except in an emergency being swept sideways where you do not want to go, I limit my BT use to short multiple bursts. If a user puts in into use and leaves in there for long runs the situation is totally different.

Kind Regards

Danny

SM 299

Ocean Pearl

On 17 June 2021 at 11:12 Ken Powers SV Aquarius <ken@...> wrote:

I have done the measurements.  My bow thruster takes 480 Amps.  It seems there are some misunderstandings with most Alternator systems installed on the main engines, and the amount of current you will get out of your GenSet.

1. Your GenSet is usually a 6.5KW Onan, or maybe you have a bigger one, but this has nothing to do with the current supplied to the 24V system.  The current supplied to the 24V system is only a factor of the battery charger/s on board.  If you only have a 60A battery charger, you will only get 60A into your 24V battery system while running your 6.5KW Onan.

2. I don't know about you, but when I am backing into a "Parking Spot",  and I engage the bow thruster, the engine is usually at idle. "Most" alternators, on an engine at idle, don't produce much current.  If you have a 100Amp Alternator, you may get 25Amps at idle, but probably more like 15Amps at Idle.  There might be alternators that provides max current at lower RPM's, but would you want this?  

3.  Rated power output of the Super Wind 350 generator is 350Watts, which is about 12 to 13Amps into a 24V battery system.  

4.  I believe the rated power for the main outhaul and furling motors is less than 1500W.  This is less than a 60A load.  There is no comparison to the amount of current the bow thruster consumes.

So, if you have Lead Acid Batteries, and lets say your capacity is 300AmpHours...  If you use the bow thruster with no alternator, and no battery chargers, it will be over 1C, which is not so good for the batteries.  If you turn on your Genset, and your 100A charger, you are still over 1C.  And if you also have an alternator that is adding 50Amps, you are still over 1C.  

Good reason to get LiFePO4.  These issues go away.

Ken Powers
Aquarius
SM2K#262


Re: Bow thruster does not work in one direvtion

Danny and Yvonne SIMMS
 

Hi Ken, I guess this was to me since you refer to my Super Wind 350. I pretty well agree with all you said though the only thing I might question is the need for life po batteries but that is a matter of choice.

As I said I have not measured the current draw but when I am tight reaching in 30 Knots and I roll in part of my headsail under load there is a big power draw. However all that is irrelevant. I just provided the information as an observation.

The important information is 12 years, 8 years + life out of my lead acid batteries and never running the gen set for the bow thruster. I agree with you that with a motor at idle or near idle the output of any alternator would be minimal.

Of course it is important to note the fact that, except in an emergency being swept sideways where you do not want to go, I limit my BT use to short multiple bursts. If a user puts in into use and leaves in there for long runs the situation is totally different.

Kind Regards

Danny

SM 299

Ocean Pearl

On 17 June 2021 at 11:12 Ken Powers SV Aquarius <ken@...> wrote:

I have done the measurements.  My bow thruster takes 480 Amps.  It seems there are some misunderstandings with most Alternator systems installed on the main engines, and the amount of current you will get out of your GenSet.

1. Your GenSet is usually a 6.5KW Onan, or maybe you have a bigger one, but this has nothing to do with the current supplied to the 24V system.  The current supplied to the 24V system is only a factor of the battery charger/s on board.  If you only have a 60A battery charger, you will only get 60A into your 24V battery system while running your 6.5KW Onan.

2. I don't know about you, but when I am backing into a "Parking Spot",  and I engage the bow thruster, the engine is usually at idle. "Most" alternators, on an engine at idle, don't produce much current.  If you have a 100Amp Alternator, you may get 25Amps at idle, but probably more like 15Amps at Idle.  There might be alternators that provides max current at lower RPM's, but would you want this?  

3.  Rated power output of the Super Wind 350 generator is 350Watts, which is about 12 to 13Amps into a 24V battery system.  

4.  I believe the rated power for the main outhaul and furling motors is less than 1500W.  This is less than a 60A load.  There is no comparison to the amount of current the bow thruster consumes.

So, if you have Lead Acid Batteries, and lets say your capacity is 300AmpHours...  If you use the bow thruster with no alternator, and no battery chargers, it will be over 1C, which is not so good for the batteries.  If you turn on your Genset, and your 100A charger, you are still over 1C.  And if you also have an alternator that is adding 50Amps, you are still over 1C.  

Good reason to get LiFePO4.  These issues go away.

Ken Powers
Aquarius
SM2K#262


Re: For those that missed the first procurement of Rub Rails

Patrick McAneny
 

Attached are a few pictures. 



On Jun 6, 2021, at 2:59 PM, EricOpdeweegh <sv.abayomi@...> wrote:

Thanks Pat, 

Sounds great. Looking forward to some photos of the final result.

Happy Sailing
Eric
sv Abayomi SM 158 


Re: Storage Hatch gaskets

Patrick McAneny
 

Bill ,Just want to double check the size of the gasket. I had a look at mine and they are 1" wide ,but where they are not depressed ,at the edges they appear to only be about 1/2" in height and in the center that bears the weight they are depressed down to about  a 1/4" ,maybe 3/8' . I just wanted to make sure that they might not have been 1/2 or 3/4" in height originally .
Thanks,
Pat
SM Shenanigans


-----Original Message-----
From: CW Bill Rouse <brouse@...>
To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io>
Sent: Fri, Jun 11, 2021 4:57 pm
Subject: Re: [AmelYachtOwners] Storage Hatch gaskets

Pat,

They are "D Profile: and 25mm, or 1" I think the following will work for you:

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


On Fri, Jun 11, 2021 at 2:37 PM Patrick McAneny via groups.io <sailw32=aol.com@groups.io> wrote:
I would like to replace the gaskets on all the storage hatches ,they are compressed and leaking somewhat. Does anyone know the dimensions and a source in the US. to buy them. I wonder if they have an adhesive backing or applied with contact cement, a backing would be less messy and easier.
Thanks,
Pat
SM Shenanigans

2501 - 2520 of 61043