Date   
Re: [Amel Yacht Owners] Re: Antifoul and watermaker inlet?

smiles bernard
 

Thanks Bill


Of course! I’m feeling rather stupid now but thanks for explaining it so patiently. 

I sent this after a long trip and I think I was brain fuddled. 

I’ll stick with that excuse for now anyhow ;)

We just arrived in Tenerife for the start of a 12 month (or longer perhaps) family adventure. 

Packing up house and home and school and jobs and shipping 12 months of family ‘stuff’ as hold baggage was epic. Phew. Glad that’s behind us. 

Hoping to launch fri/Monday and relax into things.  

Very much hope to meet a few of this parish in person whilst en route this year. 

Santa Cruz currently. Heading to lanzarotte as soon as we are ready and there is any hint of the wind heading less easterly. Not even sure if that happens round here at this time of year but we will see. 

All the very best
Miles 

Sea Love 
Maramu 162


On 17 Jul 2018, at 23:11, greatketch@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Miles,


If your concern is the water quality out of the RO unit, rest assured you will not have a problem.  Copper water pipes are the preferred type for potable water everywhere.  Also, copper is a very large molecule, and would be very efficiently removed by your RO membranes.

I don’t know about you Maramu, but on our SM most out the interior fresh water plumbing is copper.

Bill Kinney
SM160, Harmonie 
Annapolis, MD, USA






---In amelyachtowners@..., wrote :

Hi there

Wondering on views to antifouling of through hulls that are used for drinking via reverse osmosis ?

We have just copper-bottomed including a new thru hull for a new RO unit on our older maramu

I believe most owners on the forum have SM Sea chest arrangements

All the best
Miles

Re: [Amel Yacht Owners] Bow Thruster On/Off Switch Replacement

Alexandre Uster von Baar
 

Good morning Duane,

I bought mine from Amel.
Amel part 2744:
http://www.nikimat.com/factures/2016_03_Amel.pdf
Paid 7 Euro each.

You can also see the “637” with 2 position (fur or unfurl sail) which is Amel part2743

For both you will need the little protective hood Amel part 2745 (same invoice) paid 2.58 Euro.

Sincerely, Alexandre



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

On Wed, 7/18/18, sailor63109@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: [Amel Yacht Owners] Bow Thruster On/Off Switch Replacement
To: amelyachtowners@...
Date: Wednesday, July 18, 2018, 8:22 AM


 









I replaced the Bow Thruster On/Off switch
and thought others might want to know what part will
work.  
The old one was
marked "APEM1, M4, 6-631H".  I could not find a
direct replacement from APEM.
The replacement I used is from Blue Seas
"Weather Deck Panel Switch #4150, Off-On, SPST"
with a Blue Seas #4138 Waterproof Boot.  By the way, the
waterproof boot will fit the old switches if you need
replacements.
The old one was
intermittently not making contact, I suspected corrosion. 
This would be a good inexpensive spare to have on hand, and
I believe Amel used it for other devices onboard as well,
for example, the Bow Thruster cut-out switch.
DuaneWanderer, SM#477

Bow Thruster On/Off Switch Replacement

Duane Siegfri
 

I replaced the Bow Thruster On/Off switch and thought others might want to know what part will work.  


The old one was marked "APEM1, M4, 6-631H".  I could not find a direct replacement from APEM.


The replacement I used is from Blue Seas "Weather Deck Panel Switch #4150, Off-On, SPST" with a Blue Seas #4138 Waterproof Boot.  By the way, the waterproof boot will fit the old switches if you need replacements.


The old one was intermittently not making contact, I suspected corrosion.  This would be a good inexpensive spare to have on hand, and I believe Amel used it for other devices onboard as well, for example, the Bow Thruster cut-out switch.


Duane

Wanderer, SM#477

Re: Antifoul and watermaker inlet?

greatketch@...
 

Miles,

If your concern is the water quality out of the RO unit, rest assured you will not have a problem.  Copper water pipes are the preferred type for potable water everywhere.  Also, copper is a very large molecule, and would be very efficiently removed by your RO membranes.

I don’t know about you Maramu, but on our SM most out the interior fresh water plumbing is copper.

Bill Kinney
SM160, Harmonie 
Annapolis, MD, USA






---In amelyachtowners@..., <smilesbernard@...> wrote :

Hi there

Wondering on views to antifouling of through hulls that are used for drinking via reverse osmosis ?

We have just copper-bottomed including a new thru hull for a new RO unit on our older maramu

I believe most owners on the forum have SM Sea chest arrangements

All the best
Miles

Antifoul and watermaker inlet?

smiles bernard
 

Hi there

Wondering on views to antifouling of through hulls that are used for drinking via reverse osmosis ?

We have just copper-bottomed including a new thru hull for a new RO unit on our older maramu

I believe most owners on the forum have SM Sea chest arrangements

All the best
Miles

Re: [Amel Yacht Owners] Re: Attention Olivier Beaute

Kaplan,Andre
 

Thank you 
I’ll try that
Andre


On Jul 17, 2018, at 3:28 PM, Ryan Meador ryan.d.meador@... [amelyachtowners] <amelyachtowners@...> wrote:

 

I believe you have to sign up for a Yahoo account (or log into it if you already have one).  Somewhere on the signup form is a semi-hidden option to use your existing email address rather than creating a new Yahoo email address -- this is the option you want, and you want to use the email address that is subscribed to this list.  I'm pretty sure that's all there is to it.

Ryan and Kelly
SM 233 Iteration
Boston, MA, USA



On Tue, Jul 17, 2018 at 3:23 PM 'Kaplan,Andre' kaplan@... [amelyachtowners] <amelyachtowners@...> wrote:
 

I am proud owner of an Amel Mango #71 and I have learned a great deal from this chat group. Can someone tell me how to download the files and photos? When I try to download these files, I get a message that I must be a member.... how do I do that?


Thanks

Andre Kaplan
Renaissance 2000, Mango 71
Westbrook, CT, USA



On Jul 17, 2018, at 1:15 PM, Thomas Deasy onboardaphrodite@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Thanks Mark

Aphrodite maramu 125
Tom Deasy 


On Jul 17, 2018, at 2:12 PM, mfmcgovern@... [amelyachtowners] <amelyachtowners@...> wrote:

 

olivierbeaute at gmail dot com and atlanticyachtsurvey at yahoo dot com

Mark McGovern
SM 440 Cara
Deale' MD USA

Re: [Amel Yacht Owners] Re: Attention Olivier Beaute

Ryan Meador
 

I believe you have to sign up for a Yahoo account (or log into it if you already have one).  Somewhere on the signup form is a semi-hidden option to use your existing email address rather than creating a new Yahoo email address -- this is the option you want, and you want to use the email address that is subscribed to this list.  I'm pretty sure that's all there is to it.

Ryan and Kelly
SM 233 Iteration
Boston, MA, USA



On Tue, Jul 17, 2018 at 3:23 PM 'Kaplan,Andre' kaplan@... [amelyachtowners] <amelyachtowners@...> wrote:
 

I am proud owner of an Amel Mango #71 and I have learned a great deal from this chat group. Can someone tell me how to download the files and photos? When I try to download these files, I get a message that I must be a member... how do I do that?


Thanks

Andre Kaplan
Renaissance 2000, Mango 71
Westbrook, CT, USA



On Jul 17, 2018, at 1:15 PM, Thomas Deasy onboardaphrodite@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Thanks Mark

Aphrodite maramu 125
Tom Deasy 


On Jul 17, 2018, at 2:12 PM, mfmcgovern@... [amelyachtowners] <amelyachtowners@...> wrote:

 

olivierbeaute at gmail dot com and atlanticyachtsurvey at yahoo dot com

Mark McGovern
SM 440 Cara
Deale' MD USA

Re: [Amel Yacht Owners] Re: Attention Olivier Beaute

Kaplan,Andre
 

I am proud owner of an Amel Mango #71 and I have learned a great deal from this chat group. Can someone tell me how to download the files and photos? When I try to download these files, I get a message that I must be a member... how do I do that?

Thanks

Andre Kaplan
Renaissance 2000, Mango 71
Westbrook, CT, USA



On Jul 17, 2018, at 1:15 PM, Thomas Deasy onboardaphrodite@... [amelyachtowners] <amelyachtowners@...> wrote:

 

Thanks Mark

Aphrodite maramu 125
Tom Deasy 


On Jul 17, 2018, at 2:12 PM, mfmcgovern@... [amelyachtowners] <amelyachtowners@...> wrote:

 

olivierbeaute at gmail dot com and atlanticyachtsurvey at yahoo dot com

Mark McGovern
SM 440 Cara
Deale' MD USA

Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

Stephen Davis
 

Thanks for going to all the hassle to get this info to me. I just got an answer from Maude this morning, they have the cables, and I asked her to ship them ASAP. In case you ever decide to change your cables, they are 335 euros plus shipping. After my experience, if you ever start to hear any noise or experience friction in the steering, I'd replace the racks, pinion, and cables all together.  After having taken ours apart twice, and still one to go, it is not hard once you have solved a few mysteries.

If you guys ever decide on a Hawaii vacation while we are still here, you would be welcome to stay on our boat which we keep in a very nice resort marina on West Oahu. Liz and I stay at at my parents home most of the week, and a couple of nights a week on the boat to maintain our sanity. Both my parents are in there 90's, and are requiring about as much maintenance as our old boats do. We hope to be on our way to French Polynesia in March 2019, but will have to see how things go with my folks.

Steve


On Tue, Jul 17, 2018 at 12:41 PM Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:
 

Steve, I just made a template the best I could with all the bolts , it is pretty good and with the additional pics I took ,it should help. I will mail it off to you and email the pics when my wife gets home. Its been six years since the install , I remember it was a little tricky establishing where to position the motors mount. I gave a measurement in one of the pics as a starting point. The steering cables stay in the same hole in the quadrant ,just drill a hole in the extension arm directly above it . You can see that I fiber glassed in a 11/2" wood block to pack out the bulkhead as well as aft of the bulkhead to also add strength . If the arm is positioned so that the rudder is on center line and the linear drive is 1/2 way extended than I would think that should be where the motor is mounted . You need to make sure you have complete travel of course. I can't remember how I determined the motor mount position, it took a little experimenting. If the rudder is hard to starboard and the drive fully extended and you marked the mount position, and then moved the rudder hard to port with the L/D fully retracted and marked that , the correct position would be half way between the marks, I would think. Just play with it before drilling the holes for the mounting. Also sending pic of the hatch I installed shortly after buying the boat , best thing I ever did . Great amount of air ,makes a hot aft cabin cool. They should have come with a hatch and do now.

Let me know if you have any questions.
Good Luck,
Pat
SM Shenanigans
Sassafras River, Md.


-----Original Message-----
From: Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 8:25 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Steve, I am glad you have the same layout. No worries about the mailing ,my treat. We'll get everything on the way to you asap.
Thanks,
Pat
SM Shenanigans


-----Original Message-----
From: Stephen Davis flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 7:34 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Thanks Pat...it is greatly appreciated. We have modified our aft stateroom a bit by removing the fiberglass liners on both sides, building the berth on the port side out to King size at the head and queen at the foot, and adding new cabinetry on the stbd side. With that said, the area under the port berth where the drive will go, is not changed in any way that will cause an issue. 

I’ll give you my Hawaii address below, and please let me know if I can send you a check or do a pay pal to reimburse you for mailing cost... 

Aloha,

Steve

Steve Davis
95-464 Kaelo Place
Mililani, Hawaii 96789

Cell: 510-908-1835

Steve Davis
S/V Aloha

On Jul 16, 2018, at 12:33 PM, Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:

 
Steve, It is a pretty straight forward solution ,uses no usable space and does not require cutting out any structural components . Remember you need a 24 v linear drive with the long arm. You will also want to buy an A/B switch , in order to switch back and forth between the rotary and linear drive. I will send photo of that as well.I will very soon take many more photos and measurements for you . Do you have the same layout as I do, with the berth to port ? I will try to make a template of the extension arm . Would you have an address , I could mail it to you? By the way, congratulations on making a long passage and dealing well through your steering issue. 
Pat
SM Shenanigans



-----Original Message-----
From: Stephen Davis flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 4:50 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Patrick, I have looked at the photo section, and your technique, seems the most simple of the 2 different methods I’ve seen this done with an older SM. We are definitely going to do the job with your method, but not until we get the steering fixed. Any dimensions or template for the quadrant extension would save me a lot of time and energy trying to re-invent the wheel. Since I have the steering apart now, I may start to do some of the legwork in the near future. Whenever you have to time, I’d greatly appreciate it if you can send me what you have. 

Thanks,

Steve Davis
S/V Aloha

On Jul 16, 2018, at 9:39 AM, Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:

 
Steve, Rather than fabricating a new quadrant , which would have been necessary had we attempted to replicate Amels original installation , I only had to fabricate an extension arm and weld it to the existing quadrant .  The design and installation on my boat went very smoothly , easy to do and has proven to work well for thousands of miles . After looking at your options ,if you chose to do an installation such as I did , I will be glad to supply you with more pictures and measurements , perhaps even a template of the extension arm.. Have you looked at the photo section , I just did and there is a couple of pics that shows clearly what I did . Let me know if you go this route, and I will help in any way I can. 
Good Luck,
Pat 
SM Shenanigans


-----Original Message-----
From: flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 2:14 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
 Hi Patrick,

Thanks for your response regarding our steering. We have it on our very long list while in Hawaii this year to add a linear drive. Do you have any specs on how you modified the quadrant on the drive attachment side?  Any info you have on this would be a big help in figuring out how to make the modification.

If you want to email me directly, try flyboyscd at gmail dot com.

Thanks,

Steve
Aloha SM 72

Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

Craig & Katherine Briggs
 

I posted my last before I read Bill Kinney quoting the Linear Drive's thrust as 480 kg. Raymarine shows both the linear drive and rotary drive handling a 20000 kg boat and they both have about the same power consumption, that is, essentially the same motors. 

The difference seems that the linear drive has the mechanical advantage built in by way of its rotary-to-linear mechanism whereas the rotary unit has that mechanical advantage supplied externally by the rack and pinion and the sizing of the chain sprockets. And, as Bill notes, with normally small turns of the rudder, overcoming the back force of turning the wheel isn't a problem, and may not be a lot as compared with the 480 kg of thrust available.
Interesting footnote to the Raymarine spec is that with the linear unit one must be able to back drive the steering system from the rudder.

Sounds like a fun project, Herb, to add a linear drive to your Santorin, and I should think it will work just fine. 

Cheers, Craig


---In amelyachtowners@..., <sangaris@...> wrote :

Excellent question, Herbert, and one I've wondered about, too.
My wheel goes about 3 turns from stop to stop. That's 3 X 360° = 1080°. My rudder moves about 30° each way or 60° stop to stop. That's an 18:1 mechanical advantage, which is why Herb has to push so hard on the rudder to spin the wheel and move the rudder. (to say nothing of wheel diameter, rudder center of effort and friction)  
Granted the linear drive has a lever arm at the quadrant giving some mechanical advantage, but it seems it still must take much more force than the rotary drive.
Interesting discussion.
Cheers, Craig
Herbert,

There is no need to disconnect the cables when using the linear drive.  The cables and wheel actually move quite freely, the force you need to move the rudder while on the hard manually is mostly just the inertia of the mass of the rudder. The inertia of the steering wheel adds some, but is not large.

The linear drive generates 480 kg of force, and has no trouble turning the rudder even under very heavy loads.

The cables and rack will see much reduced load and will wear LESS using the linear drive than they will using the chain drive.

Most of the time, if the boat is trimmed well, the autopilot movements of the rudder should be very small.

Bill Kinney
SM160, Harmonie 
Annapolis, MD, USA

---In amelyachtowners@..., <herbert@...> wrote :

Hi Bill, I think I could not express myself very clear, try to say it again, sorry for my English: 

when the rudder is moved by the rotary drive (or by the steering wheel) it moves very smooth, you can turn it with the "little finger".  If I try to move the rudder (on the hard) by pushing or pulling it I need quite a lot of power until it moves (and of course the steering wheel turns also). So I thought, that the system is designed in a way that it runs very smooth when the power transmission goes from wheel to rudder but not the other way round (eg like a worm gear...).

If the linear drive turns the rudder by moving the quadrant I thought that there might be a lot of friction until the steering wheel gets turned by the ultraflex cables.  Is it true that the linear drive also turns the steering wheel when working - I assume yes?

This is not a question how the Autopilot works but how the Amel Steering works

thx, herbert


 

Re: [Amel Yacht Owners] Re: Attention Olivier Beaute

amel46met
 

Thanks Mark
Aphrodite maramu 125
Tom Deasy 


On Jul 17, 2018, at 2:12 PM, mfmcgovern@... [amelyachtowners] <amelyachtowners@...> wrote:

 

olivierbeaute at gmail dot com and atlanticyachtsurvey at yahoo dot com

Mark McGovern
SM 440 Cara
Deale' MD USA

Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

Craig & Katherine Briggs
 

Excellent question, Herbert, and one I've wondered about, too.
My wheel goes about 3 turns from stop to stop. That's 3 X 360° = 1080°. My rudder moves about 30° each way or 60° stop to stop. That's an 18:1 mechanical advantage, which is why Herb has to push so hard on the rudder to spin the wheel and move the rudder. (to say nothing of wheel diameter, rudder center of effort and friction)  
Granted the linear drive has a lever arm at the quadrant giving some mechanical advantage, but it seems it still must take much more force than the rotary drive.
Interesting discussion.
Cheers, Craig


---In amelyachtowners@..., <herbert@...> wrote :

Hi Bill, I think I could not express myself very clear, try to say it again, sorry for my English: 

when the rudder is moved by the rotary drive (or by the steering wheel) it moves very smooth, you can turn it with the "little finger".  If I try to move the rudder (on the hard) by pushing or pulling it I need quite a lot of power until it moves (and of course the steering wheel turns also). So I thought, that the system is designed in a way that it runs very smooth when the power transmission goes from wheel to rudder but not the other way round (eg like a worm gear...).

If the linear drive turns the rudder by moving the quadrant I thought that there might be a lot of friction until the steering wheel gets turned by the ultraflex cables.  Is it true that the linear drive also turns the steering wheel when working - I assume yes?

This is not a question how the Autopilot works but how the Amel Steering works

thx, herbert


Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

Patrick McAneny
 

Steve, I just made a template the best I could with all the bolts , it is pretty good and with the additional pics I took ,it should help. I will mail it off to you and email the pics when my wife gets home. Its been six years since the install , I remember it was a little tricky establishing where to position the motors mount. I gave a measurement in one of the pics as a starting point. The steering cables stay in the same hole in the quadrant ,just drill a hole in the extension arm directly above it . You can see that I fiber glassed in a 11/2" wood block to pack out the bulkhead as well as aft of the bulkhead to also add strength . If the arm is positioned so that the rudder is on center line and the linear drive is 1/2 way extended than I would think that should be where the motor is mounted . You need to make sure you have complete travel of course. I can't remember how I determined the motor mount position, it took a little experimenting. If the rudder is hard to starboard and the drive fully extended and you marked the mount position, and then moved the rudder hard to port with the L/D fully retracted and marked that , the correct position would be half way between the marks, I would think. Just play with it before drilling the holes for the mounting. Also sending pic of the hatch I installed shortly after buying the boat , best thing I ever did . Great amount of air ,makes a hot aft cabin cool. They should have come with a hatch and do now.
Let me know if you have any questions.
Good Luck,
Pat
SM Shenanigans
Sassafras River, Md.


-----Original Message-----
From: Patrick Mcaneny sailw32@... [amelyachtowners]
To: amelyachtowners
Sent: Mon, Jul 16, 2018 8:25 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Steve, I am glad you have the same layout. No worries about the mailing ,my treat. We'll get everything on the way to you asap.
Thanks,
Pat
SM Shenanigans


-----Original Message-----
From: Stephen Davis flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 7:34 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Thanks Pat...it is greatly appreciated. We have modified our aft stateroom a bit by removing the fiberglass liners on both sides, building the berth on the port side out to King size at the head and queen at the foot, and adding new cabinetry on the stbd side. With that said, the area under the port berth where the drive will go, is not changed in any way that will cause an issue. 

I’ll give you my Hawaii address below, and please let me know if I can send you a check or do a pay pal to reimburse you for mailing cost.. 

Aloha,

Steve

Steve Davis
95-464 Kaelo Place
Mililani, Hawaii 96789

Cell: 510-908-1835

Steve Davis
S/V Aloha

On Jul 16, 2018, at 12:33 PM, Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:

 
Steve, It is a pretty straight forward solution ,uses no usable space and does not require cutting out any structural components . Remember you need a 24 v linear drive with the long arm. You will also want to buy an A/B switch , in order to switch back and forth between the rotary and linear drive. I will send photo of that as well.I will very soon take many more photos and measurements for you . Do you have the same layout as I do, with the berth to port ? I will try to make a template of the extension arm . Would you have an address , I could mail it to you? By the way, congratulations on making a long passage and dealing well through your steering issue. 
Pat
SM Shenanigans



-----Original Message-----
From: Stephen Davis flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 4:50 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
Patrick, I have looked at the photo section, and your technique, seems the most simple of the 2 different methods I’ve seen this done with an older SM. We are definitely going to do the job with your method, but not until we get the steering fixed. Any dimensions or template for the quadrant extension would save me a lot of time and energy trying to re-invent the wheel. Since I have the steering apart now, I may start to do some of the legwork in the near future. Whenever you have to time, I’d greatly appreciate it if you can send me what you have. 

Thanks,

Steve Davis
S/V Aloha

On Jul 16, 2018, at 9:39 AM, Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:

 
Steve, Rather than fabricating a new quadrant , which would have been necessary had we attempted to replicate Amels original installation , I only had to fabricate an extension arm and weld it to the existing quadrant .  The design and installation on my boat went very smoothly , easy to do and has proven to work well for thousands of miles . After looking at your options ,if you chose to do an installation such as I did , I will be glad to supply you with more pictures and measurements , perhaps even a template of the extension arm.. Have you looked at the photo section , I just did and there is a couple of pics that shows clearly what I did . Let me know if you go this route, and I will help in any way I can. 
Good Luck,
Pat 
SM Shenanigans


-----Original Message-----
From: flyboyscd@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Mon, Jul 16, 2018 2:14 pm
Subject: Re: [Amel Yacht Owners] Steering Failure on 1992 SM72 "Aloha"

 
 Hi Patrick,

Thanks for your response regarding our steering. We have it on our very long list while in Hawaii this year to add a linear drive. Do you have any specs on how you modified the quadrant on the drive attachment side?  Any info you have on this would be a big help in figuring out how to make the modification.

If you want to email me directly, try flyboyscd at gmail dot com.

Thanks,

Steve
Aloha SM 72

Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

greatketch@...
 

Herbert,

There is no need to disconnect the cables when using the linear drive.  The cables and wheel actually move quite freely, the force you need to move the rudder while on the hard manually is mostly just the inertia of the mass of the rudder. The inertia of the steering wheel adds some, but is not large.

The linear drive generates 480 kg of force, and has no trouble turning the rudder even under very heavy loads.

The cables and rack will see much reduced load and will wear LESS using the linear drive than they will using the chain drive.

Most of the time, if the boat is trimmed well, the autopilot movements of the rudder should be very small.

Bill Kinney
SM160, Harmonie 
Annapolis, MD, USA

Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

Patrick McAneny
 

Herbert, Yes the linear drive moves all the components connected to the steering system. I am not an engineer , but I suspect it all comes down to leverage imposed from the helm is greater than what you impose from the rudder. As to wear ,it would be the same ,as when employing the rotary ,all the same parts are moving. I suppose if you took the chain off the rotary drive ,you could save that from moving , but the wear is minimum and would not be a good idea. 
Pat
SM#123


-----Original Message-----
From: herbert@... [amelyachtowners]
To: amelyachtowners
Sent: Tue, Jul 17, 2018 10:51 am
Subject: Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

 
Hi Bill, I think I could not express myself very clear, try to say it again, sorry for my English: 

when the rudder is moved by the rotary drive (or by the steering wheel) it moves very smooth, you can turn it with the "little finger".  If I try to move the rudder (on the hard) by pushing or pulling it I need quite a lot of power until it moves (and of course the steering wheel turns also). So I thought, that the system is designed in a way that it runs very smooth when the power transmission goes from wheel to rudder but not the other way round (eg like a worm gear...).

If the linear drive turns the rudder by moving the quadrant I thought that there might be a lot of friction until the steering wheel gets turned by the ultraflex cables.  Is it true that the linear drive also turns the steering wheel when working - I assume yes?

This is not a question ho w the Autopilot works but how the Amel Steering works

thx, herbert


Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

Herbert Lackner
 

Hi Bill, I think I could not express myself very clear, try to say it again, sorry for my English: 

when the rudder is moved by the rotary drive (or by the steering wheel) it moves very smooth, you can turn it with the "little finger".  If I try to move the rudder (on the hard) by pushing or pulling it I need quite a lot of power until it moves (and of course the steering wheel turns also). So I thought, that the system is designed in a way that it runs very smooth when the power transmission goes from wheel to rudder but not the other way round (eg like a worm gear...).

If the linear drive turns the rudder by moving the quadrant I thought that there might be a lot of friction until the steering wheel gets turned by the ultraflex cables.  Is it true that the linear drive also turns the steering wheel when working - I assume yes?

This is not a question how the Autopilot works but how the Amel Steering works

thx, herbert


Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

 

It is very possible that you will need to reverse polarity if the physical alignment is reversed. Think about it and you'll understand that the course computer controlls right and left rudder by reversing polarity. 

Best,

CW Bill Rouse
Admiral, Texas Navy
Commander Emeritus
Amel School www.amelschool.com
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

On Tue, Jul 17, 2018, 16:00 herbert@... [amelyachtowners] <amelyachtowners@...> wrote:
 

maybe a stupid question from a SN owner: when adding a linear drive  --  the rotary steering system stays exactly the same, no changes, is that right? No need to disconnect the cables when switching to the linear drive?  When I try to move the rudder by hand (on the hard, when applying antifouling...) this is not easy and needs some power, when I turn the wheel it is very easy, so I thought there might be also some wear on the steering system when the rudder is moved by the linear drive and the cables and chain and wheel will turn also...  that was the reason for me not to plan a linear drive installation but to carry second course computer and rotary drive engine as spares...

thx, herbert, KALI MERA, SN 120, Shelter Bay

Re: [Amel Yacht Owners] Re: Steering Failure on 1992 SM72 "Aloha"

Herbert Lackner
 

maybe a stupid question from a SN owner: when adding a linear drive  --  the rotary steering system stays exactly the same, no changes, is that right? No need to disconnect the cables when switching to the linear drive?  When I try to move the rudder by hand (on the hard, when applying antifouling...) this is not easy and needs some power, when I turn the wheel it is very easy, so I thought there might be also some wear on the steering system when the rudder is moved by the linear drive and the cables and chain and wheel will turn also...  that was the reason for me not to plan a linear drive installation but to carry second course computer and rotary drive engine as spares...

thx, herbert, KALI MERA, SN 120, Shelter Bay

Re: Attention Olivier Beaute

mfmcgovern@...
 

olivierbeaute at gmail dot com and atlanticyachtsurvey at yahoo dot com

Mark McGovern
SM 440 Cara
Deale' MD USA

Re: Storage in the galley Super Maramu 2000

Elaine Leishman
 


Thanks Gary and John for your very detailed responses to my dilemma.  Michael and I spent the afternoon rearranging some of the lockers, cupboards and the bilges and now feel reasonably happy with the outcome.

I  realize that we will probably change things again as we spend more time aboard and figure out what needs to be accessed readily.

Looking forward to this new chaper in our lives and the experiences that follow.

Regards,
Elaine and Michael
SV Nebo No. 251

Sent from my Samsung Galaxy smartphone.