Date   
Re: Sharki shaft alternator

marklesparkle59
 

Gerhard there is no sticker on Sea Hobo,
Do I have the same gearbox as you? Can you tell from this photo?
Mark



Sent from my Samsung device

Re: Sharki shaft alternator

Gerhard Mueller
 

Same sticker here at my Sharki. I guess the bearings of the gearbox are not lubricated enough anymore when shift is in forward position while sailing.
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece

Re: Sharki shaft alternator

Beaute Olivier
 

Hello Warrren,

on a Sharki with fixed prop, while sailing, you should stop the propeller by engaging reverse. This will reduce noise and packing stuff wear. There will be a "clunk" which could surprise you but don't worry, the clutch shock when you engage forward or reverse with the engine  ON is stronger (there is more power from the engine towards the propeller when it is running  than from the prop to the engine --through the gear-box--when the engine is OFF).
This true for every boat with a fixed prop and mechanic gear-box.

For those with Autoprop and mechanic gear-box (mainly SMs), they engage forward in order to stop the prop spinning. They don't necessarily need to start the engine with forward engaged.
For those with Autoprop and hydraulic gear-box, they leave the throttle lever in neutral position, the shaft brake system doing the job.
In both, while sailing and as the engine starts, the Autoprop will spin before forward is engaged. This is not a big deal BUT it is better to drop boat speed (if possible) before engaging forward. This will give a smaller shock to the gear-box and soft coupling.

I'm not sure if this is all clear to everyone, so, feel free for questions...

Olivier

On Monday, March 11, 2019, 11:30:23 PM GMT+1, Danny and Yvonne SIMMS <simms@...> wrote:


Hi Mark,

the important thing is the clunk. My sign says no to forward, but as I said in my previous just to be contrary sometimes its clunk in forward, sometimes reverse. I don't think it has anything to do wit the prop. I have auto prop So I just go with the clunk.

Regards

Danny

On 12 March 2019 at 07:58 Mark Erdos <mcerdos@...> wrote:

Danny,

 

The opposite is true on Cream Puff. There is a French sticker by the throttle that says to put the gear in forward when sailing and leave it there. We do not have a shaft break or alternator. We also start the engine (when the boat is moving forward) with it in gear per the sign. This seemed odd to me but Miles from Lady Bug has the same sticker and speaks fluent French.

 

We are fitted with an AutoProp and for some reason this makes a difference (and of cause the engine on Amel faces the wrong way – not sure if this also effects it). We are unable to stop the rotation of the shaft in reverse. It will still slowly turn. We hear the reassuring clunk in forward and the shaft will not move. I really do not know all the mechanics involved but just follow the sign.

 

This all obviously varies by vessel, engine, prop etc.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Danny and Yvonne SIMMS
Sent: Monday, March 11, 2019 2:39 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

 

Hi.

The reason being that it locks in reverse but in forward the clutch plates are lightly engaged and the propeller turns slowly causing wear to the plates. Try it with the engine cover up when sailing with the shift in neutral and the prop will be spinning. Engage forward and it will slow, engage reverse and there is a satisfying clunk and it stops.

However mine for some reason not known sometimes stops in reverse, sometimes in forward so I always check for that satisfying clunk.

Regards

Danny

SM 299

Ocean Pearl

On 12 March 2019 at 07:18 Ian <parkianj@...> wrote:


Miles
The Santorin has a Hurth gearbox. The instruction by the gear shift says not to put into forward gear whilst sailing. Must be a reason.

Ian

 



 


 

Re: Companionway Door Seal - New Photos Album & Photos

James Alton
 

Gary,

    I just went through the photo albums that you updated for us and it is such an improvement over the old system.    Because of the organization, I was able to find many useful photos pertaining to my boat and projects.  Thank you for all of your efforts in organizing the photos and for your other contributions as well. 

    I badly need to change what may well be the original slider seal on Sueno’s slider hatch so I will definitely be going over in detail the seal you created for the slider out of silicone sheet referred to in your post below.  

Thanks again!

James
SV Sueno
Maramu #220

On Mar 12, 2019, at 12:17 AM, Gary Silver via Groups.Io <garysilver@...> wrote:

Hi all:  
I just posted a series of photographs showing the replacement of my companionway door seal.  I did this about 4 years ago.  I have owned the boat since new and the original Amel seal began failing at about year 10 and by year 13 demanded attention.  I was un-successful in obtaining original Amel material (no longer available).  I couldn't find anything in the automotive industry that I found suitable, so I fabricated my own.  I am an aircraft mechanic and almost daily utilize red silicone sheet rubber for engine baffling.  It is very durable and doesn't deform with fuel, oil, heat etc.  It has held up well for the last 4 years.  I fabricated from teak an obtuse triangular shim to hold the silicone seal material in place against the door in a squeegee like fashion.  The photos are in the album entitled:
"Modifications - Companionway Door Seal".  I'll try and post a dimensional drawing of the shim and a source for the seal material soon. 

Hope this may of be of use to some. 

Gary S Silver
s/v Liahona
Amel SM 2000  #335
Puerto Del Rey Marina,  Puerto Rico

Companionway Door Seal - New Photos Album & Photos

Gary Silver
 

Hi all:  
I just posted a series of photographs showing the replacement of my companionway door seal.  I did this about 4 years ago.  I have owned the boat since new and the original Amel seal began failing at about year 10 and by year 13 demanded attention.  I was un-successful in obtaining original Amel material (no longer available).  I couldn't find anything in the automotive industry that I found suitable, so I fabricated my own.  I am an aircraft mechanic and almost daily utilize red silicone sheet rubber for engine baffling.  It is very durable and doesn't deform with fuel, oil, heat etc.  It has held up well for the last 4 years.  I fabricated from teak an obtuse triangular shim to hold the silicone seal material in place against the door in a squeegee like fashion.  The photos are in the album entitled:
"Modifications - Companionway Door Seal".  I'll try and post a dimensional drawing of the shim and a source for the seal material soon. 

Hope this may of be of use to some. 

Gary S Silver
s/v Liahona
Amel SM 2000  #335
Puerto Del Rey Marina,  Puerto Rico

Maramu T-track matching

smiles bernard
 

Hello Amelians

Folk on this forum have been very helpful with advice re how to remove the Maramu Genoa sheet cars.

(Best bet seemed to be to undo the stanchion base fwd of the track and push this ‘loose’ stanchion base inboard to allow the passage of the car off the T track. )

I have family coming to stay from Europe in a few weeks so I’m hoping to load their suitcases up with a Genoa sheet cars.

The originals on Sea Love are Goiot.

Could anyone be kind enough to tell me if the any metric Genoa cars of the right track width will do or are things more complex than that re matching track thickness and profile etc?

Many thanks
Miles

Re: Maramu anchor and chain suggestions

Gary Silver
 

James:

I have had a Spade anchor on Liahona (Amel SM 2000) for about 8 years;  I can't recall the size (weight) I bought but it is roughly the equivalent size of the SS CQG anchor the boat came new with.  It fits the bow roller well.  I will try and find a picture to post.  This Spade sets the first time every time everywhere I have been in the Caribbean.  The only time it drug was when I hooked an underwater cable and it slid along the cable. The original CQR anchor that came with the boat was pretty, never rusted etc but it was a nightmare to set in the same places.

Gary S. Silver
s/v Liahona
Amel SM 2000 # 335
Puerto Rico
 

Re: Maramu anchor and chain suggestions

Gary Silver
 

Colin and Lauren:

I know of several people who have had their chain done by Buzz Parlato of Lighthouse Marine in St. Thomas. Cell 340-334-3117, email lighthouse at islands dot vi.     Evidently you specify the chain you want, go bow in to a slip in Crown Bay Marina, at Charlotte Amalie,  they come on the dock with the chain, strip your old chain, load the new chain, and haul away your old chain.  Those I have heard from say it is seamless and easy.  Once I calculated the weight of 80 meters of 10 mm chain and it seems like it was something like 800 lbs. so doing the job myself is something I wasn't looking forward to.  I haven't used these folks personally but I think Joe Nance did. 

Gary S. Silver
s/v Liahona 
Amel SM 2000 #335
Puerto Rico

Re: Sharki shaft alternator

Danny and Yvonne SIMMS
 

Hi Mark,

the important thing is the clunk. My sign says no to forward, but as I said in my previous just to be contrary sometimes its clunk in forward, sometimes reverse. I don't think it has anything to do wit the prop. I have auto prop So I just go with the clunk.

Regards

Danny

On 12 March 2019 at 07:58 Mark Erdos <mcerdos@...> wrote:

Danny,

 

The opposite is true on Cream Puff. There is a French sticker by the throttle that says to put the gear in forward when sailing and leave it there. We do not have a shaft break or alternator. We also start the engine (when the boat is moving forward) with it in gear per the sign. This seemed odd to me but Miles from Lady Bug has the same sticker and speaks fluent French.

 

We are fitted with an AutoProp and for some reason this makes a difference (and of cause the engine on Amel faces the wrong way – not sure if this also effects it). We are unable to stop the rotation of the shaft in reverse. It will still slowly turn. We hear the reassuring clunk in forward and the shaft will not move. I really do not know all the mechanics involved but just follow the sign.

 

This all obviously varies by vessel, engine, prop etc.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Danny and Yvonne SIMMS
Sent: Monday, March 11, 2019 2:39 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

 

Hi.

The reason being that it locks in reverse but in forward the clutch plates are lightly engaged and the propeller turns slowly causing wear to the plates. Try it with the engine cover up when sailing with the shift in neutral and the prop will be spinning. Engage forward and it will slow, engage reverse and there is a satisfying clunk and it stops.

However mine for some reason not known sometimes stops in reverse, sometimes in forward so I always check for that satisfying clunk.

Regards

Danny

SM 299

Ocean Pearl

On 12 March 2019 at 07:18 Ian <parkianj@...> wrote:


Miles
The Santorin has a Hurth gearbox. The instruction by the gear shift says not to put into forward gear whilst sailing. Must be a reason.

Ian

 



 


 

Re: Sharki shaft alternator

Mark Erdos
 

Danny,

 

The opposite is true on Cream Puff. There is a French sticker by the throttle that says to put the gear in forward when sailing and leave it there. We do not have a shaft break or alternator. We also start the engine (when the boat is moving forward) with it in gear per the sign. This seemed odd to me but Miles from Lady Bug has the same sticker and speaks fluent French.

 

We are fitted with an AutoProp and for some reason this makes a difference (and of cause the engine on Amel faces the wrong way – not sure if this also effects it). We are unable to stop the rotation of the shaft in reverse. It will still slowly turn. We hear the reassuring clunk in forward and the shaft will not move. I really do not know all the mechanics involved but just follow the sign.

 

This all obviously varies by vessel, engine, prop etc.

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff

www.creampuff.us

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Danny and Yvonne SIMMS
Sent: Monday, March 11, 2019 2:39 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

 

Hi.

The reason being that it locks in reverse but in forward the clutch plates are lightly engaged and the propeller turns slowly causing wear to the plates. Try it with the engine cover up when sailing with the shift in neutral and the prop will be spinning. Engage forward and it will slow, engage reverse and there is a satisfying clunk and it stops.

However mine for some reason not known sometimes stops in reverse, sometimes in forward so I always check for that satisfying clunk.

Regards

Danny

SM 299

Ocean Pearl

On 12 March 2019 at 07:18 Ian <parkianj@...> wrote:


Miles
The Santorin has a Hurth gearbox. The instruction by the gear shift says not to put into forward gear whilst sailing. Must be a reason.

Ian

Re: Sharki shaft alternator

Danny and Yvonne SIMMS
 

Hi.

The reason being that it locks in reverse but in forward the clutch plates are lightly engaged and the propeller turns slowly causing wear to the plates. Try it with the engine cover up when sailing with the shift in neutral and the prop will be spinning. Engage forward and it will slow, engage reverse and there is a satisfying clunk and it stops.

However mine for some reason not known sometimes stops in reverse, sometimes in forward so I always check for that satisfying clunk.

Regards

Danny

SM 299

Ocean Pearl

On 12 March 2019 at 07:18 Ian <parkianj@...> wrote:


Miles
The Santorin has a Hurth gearbox. The instruction by the gear shift says not to put into forward gear whilst sailing. Must be a reason.

Ian

Re: Sharki shaft alternator

Ian Park
 

Miles
The Santorin has a Hurth gearbox. The instruction by the gear shift says not to put into forward gear whilst sailing. Must be a reason.

Ian

Re: Maramu anchor and chain suggestions

islandpearl2_sm2k332
 

James

Apology, I cannot assist with the Maramu specific anchor fit question, but would say we have been very happy with our Rocna 40kg. Now more than half the way around the world, it has only ever dragged once in the Maldives on rock when we stopped briefly for an hour to refuel in Gan and did not put enough chain out, nor pull back on it.

If the Rocna 33 fits your bow that is what I would fit. We had one on our last boat (Island Packet 40) and it was perfect

On the question of length, I would agree that 100m instead of the standard 80m would be a good idea. We also want to upgrade to 100m or 110m x 10mm chain now before heading over the Pacific. I personally would not go down to 8mm.

Does anyone know of a good quality (Well priced!) chain supplier here in the Caribbean?? We are in BVI'S now, and headed to St Martin next before Bonaire and Panama..

Cheers
Colin & Lauren
SV Island Pearl II
Peter Island, BVI'S




On Sat, 9 Mar. 2019, 10:34 James Alton via Groups.Io, <lokiyawl2=aol.com@groups.io> wrote:
Hello Maramu owners,

   I am not at my boat currently so need some help.  Can Maramu owners suggest modern anchors that are known to fit the original Amel anchor rollers on the Maramu?  I would like to upgrade from the original Bugel anchor to something with a bit better holding.  The Mantus,  Spade and the Rocna are of interest to me.    I am concerned about the tendency of the anchor to strike the bow when being stowed and how well the anchor stows in the original Amel hardware.

   I am also planing to increase the chain length to at least 100 meters.  Has anyone switched to high strength (I believe it is grade 80?) 8mm chain to help keep the weight and the chain piles down as compared to the 10mm?  I am not concerned about not being able to regalvanize the chain which I understand can weaken the grade 80.

   Short term cruising will be Croatia and Greece.  Hope to be in the Pacific in 4-5 years and I seem to recall suggestions to consider even more than 100 meters of chain?   

Thanks for any insight and suggestions.

James

SV Sueno
Maramu #220


Re: Tunesia

Joerg Esdorn
 

This is very helpful advice, many thanks!  My conclusion is to go to Hammamet/Port Jasmine, rather than Gammarth or Sidi  Bou Said.  
Joerg

Re: Bow locker floor replacement.....

Thomas Kleman
 

Thanks to all for the words of wisdom I'm getting. Because I wasn't that careful with debris, the dust and wood chips combined with the mud already there to clog my anchor locker drain (entering through the permanent grating). While I was able to access the line to clear it out both from the T connection near the shower and the drain fitting inside the locker, getting the mud/other stuff out requires one to be inside the chain locker with some kind of vacuum poked through the grate, if it's really clogged. Which brings me to my question. I'm leaning towards an ingress hatch so I can get inside the chain locker. Just continually blowing the clog free with water/compressed air seems to be kicking the can down the road a bit. Thoughts ? Note- Since I achieved the age of 6, I lost the ability to pass through the bulkhead access door. I'm wondering if part of the reason my previous 5 year old chain became a ball of rust was incomplete drainage from the locker. I can't say I regularly emptied enough chain out of the locker to allow for a visual inspection. 

Re: Maramu anchor and chain suggestions

James Alton
 

Greg,

   Thanks for your input.  I don’t have to order my anchor right away so I will look forward to hearing your report.   It seems from my research so far that the Mantus should be good in weed,  I hope so too.   The areas of the Med. that we have sailed so far  (Sardinia, Sicily,  Tunisia)  all had sandy areas that we could anchor in amongst the weed.  Do you think that there is more weed in the Med as you go further East?  Thanks for letting me know that the Spade is not working in the Med. weed.  It does not appear that the Spade will fit the Amel anchor hardware either so I think I will take that option off of the list.  We hope to be in Eastern Greece and perhaps Turkey next season, it would be great to hear about some of your travels,  perhaps we can chat some via email?

Best,

James
SV Sueno
Maramu #220

On Mar 10, 2019, at 11:12 PM, Gregory Shea <gmshea@...> wrote:

James,
I have a 20 kg Spade on my Sharki. Works great in sand, useless in (Med) weed. I am taking a 25 kg Mantus with me next month. I hope it can get through the weed because that would really open up Med anchorages. I used the template on the Mantus website to size it on the roller. It's a bit hokey but better than nothing.
Will report back but that may be too late for you.

Greg Shea
Sharki 133 Cap des iles
In eastern Greece for 2019

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of James Alton via Groups.Io <lokiyawl2@...>
Sent: Sunday, March 10, 2019 5:11:13 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Maramu anchor and chain suggestions
 
Michael,

  Thanks for sharing your experience with the Rocna and for the insight on the Chrome Duplex, I had never heard of it until your post.  From the research I have done to date it appears that the Rocna would be a big step up in holding from my original Buegel anchor and it is well proven.   The Mantus is an anchor of interest to me as well, mostly because it seems to be unusually reliable in resetting.   It can of course be hard to separate the hype from fact so I am still pondering…   I am concerned a bit about how light the shank is on the Mantus. 

  I am really hoping to hear from another Maramu owner that has used the Mantus to know for sure if it would even fit my boat before I make my final decision but I understand that this anchor has not been around all that long so maybe no one has tried it yet.  The side profile and angle of the plough portion of the anchor is very similar to the Rocna which looks encouraging.  The shank is longer in the sizes I am looking at but I think that there should be enough deck space.   I have seen the Mantus on a few Super Maramus and they appear to fit pretty well.  If anyone with a Super Maramu would like to comment on what they think of this anchor on their Amel I would sure appreciate the input.

Best,

James
SV Sueno
Maramu #220

On Mar 10, 2019, at 11:31 AM, amel@... wrote:

Hi James,

in my experience the Rocna has excellent holding power. I weathered the Medicane in Greece last October with this Anchor (45+ kn winds for several hours) and also used it on a couple of occasion with similar wind speeds.
It sets quite fast within 1-2 m of the drop point. It has some problems on weed, but so has nearly every other anchor.

Yes, I suggested that a stainless steel chain has a much better tendency to stow itself because it is more "slick". But as you pointed out, stainles steel is not stainless steel. While in cold waters like Northern Europe you may do ok with AISI 316 (1.4401) quality for a while (1.4571 would be better if you anchor often), in the Med and in tropical regions the only material you can use for any prolonged perios without corrosion problems is 1.4462 Chrome Duplex.
Unfortunately it has a price tag 4 times the one of galvanized steel - which did keep me away from it so far ;)



Re: Sharki shaft alternator

smiles bernard
 

Interesting thread !

I have been using the shaft alternator lots over the last 8 months. 

My Hurth gearbox manual seems to suggest that it should be left to idle (regardless of the Amel propshaft alternator) but I assume this is very gearbox specific. So I run my gearbox in neutral even without the alternator ‘on’

Does anyone known if idle in reverse or idle with the gearbox lever fwd makes a difference? Or is idle just idle - if you don’t have a MaxProp that is?

When coming out of idle I try and slow the boat down 1st to reduce gearbox forces as it moves into gear. 



All the best
Miles
Maramu 162



On 10 Mar 2019, at 21:39, amel46met <onboardaphrodite@...> wrote:

Hi Olivier 
Thanks for the information 
Will give it a try with this good Caribbean wind 
Tom Deasy 
S/Y Aphrodite 
Maramu # 125


On Mar 10, 2019, at 8:36 PM, Warren Traill <trailz@...> wrote:

Interesting information Olivier. I have another question. My propeller is fixed. And I have no shaft a;ternator.

When I am sailing the shaft continues to rotate.

Is it good practise to engage reverse to stop the shaft rotating if I wish. Or is there some potential for damage?

Thanks,

Warren

Manon2

Sharki #15

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Beaute Olivier via Groups.Io
Sent: Sunday, 10 March 2019 10:51 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

 

Hello Tom,

 

the prop shaft alternator can work with a MAXPROP. It is a bit tricky, but you should try this:

-while sailing (above 4 knots), start the engine and engage reverse idling

-while your engine is reversing, turn ON the key switch of your alternator

-then set the engine to neutral and stop it

Your MAXPROP should keep the reverse position unless:

a) your batteries are charged enough and the alternator will not oppose much power to the prop, therefore the prop will spin faster and will finally open and the shaft will stop

b) your boat speed is high (while surfing) and the prop will spin faster and will open

 

Good luck.

 

Olivier

 

 

On Friday, March 8, 2019, 7:24:20 PM GMT+1, amel46met <onboardaphrodite@...> wrote:

 

 

Hello 

Does anyone in the group use a Max Prop with the shaft alternator I have read that it does work any tricks?

Tom Deasy 

Maramu 125


On Mar 8, 2019, at 8:10 AM, marklesparkle59 <marklesparkle59@...> wrote:

Thanks Ian. I am struggling to get to grips with the electrical system. The engine/starboard alternator is charging but not sure about the domestic/port alternator and I dont really understand the data my shiney new clamp meter is giving me. I need to read a book I think.

Mark

 

 

 

Sent from my Samsung device



-------- Original message --------
From: Ian <parkianj@...>
Date: 08/03/2019 11:52 (GMT+00:00)
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

Mark
On my Santorin you have to put the key in and switch on (next to your ameter). The green light comes on. It sends a current to the alternator to excite it and start it charging. You should turn off when finished using it and put your gear lever in reverse to stop the alternator charging before switching on the engine.
I believe the diodes in each of the engine and alternator should prevent any ‘issues’, but that is the prescribed Amel method.
My knowledge of electrics is limited - someone with a better understanding may chip in here.
The Santorin prop shaft pulley is quite a bit bigger too, so will turn the alternator faster. There is a significant drop in prop shaft speed as soon as you turn the alternator on.

Ian


Re: Maramu anchor and chain suggestions

Gregory Shea
 

James,
I have a 20 kg Spade on my Sharki. Works great in sand, useless in (Med) weed. I am taking a 25 kg Mantus with me next month. I hope it can get through the weed because that would really open up Med anchorages. I used the template on the Mantus website to size it on the roller. It's a bit hokey but better than nothing.
Will report back but that may be too late for you.

Greg Shea
Sharki 133 Cap des iles
In eastern Greece for 2019


From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of James Alton via Groups.Io <lokiyawl2@...>
Sent: Sunday, March 10, 2019 5:11:13 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Maramu anchor and chain suggestions
 
Michael,

  Thanks for sharing your experience with the Rocna and for the insight on the Chrome Duplex, I had never heard of it until your post.  From the research I have done to date it appears that the Rocna would be a big step up in holding from my original Buegel anchor and it is well proven.   The Mantus is an anchor of interest to me as well, mostly because it seems to be unusually reliable in resetting.   It can of course be hard to separate the hype from fact so I am still pondering…   I am concerned a bit about how light the shank is on the Mantus. 

  I am really hoping to hear from another Maramu owner that has used the Mantus to know for sure if it would even fit my boat before I make my final decision but I understand that this anchor has not been around all that long so maybe no one has tried it yet.  The side profile and angle of the plough portion of the anchor is very similar to the Rocna which looks encouraging.  The shank is longer in the sizes I am looking at but I think that there should be enough deck space.   I have seen the Mantus on a few Super Maramus and they appear to fit pretty well.  If anyone with a Super Maramu would like to comment on what they think of this anchor on their Amel I would sure appreciate the input.

Best,

James
SV Sueno
Maramu #220

On Mar 10, 2019, at 11:31 AM, amel@... wrote:

Hi James,

in my experience the Rocna has excellent holding power. I weathered the Medicane in Greece last October with this Anchor (45+ kn winds for several hours) and also used it on a couple of occasion with similar wind speeds.
It sets quite fast within 1-2 m of the drop point. It has some problems on weed, but so has nearly every other anchor.

Yes, I suggested that a stainless steel chain has a much better tendency to stow itself because it is more "slick". But as you pointed out, stainles steel is not stainless steel. While in cold waters like Northern Europe you may do ok with AISI 316 (1.4401) quality for a while (1.4571 would be better if you anchor often), in the Med and in tropical regions the only material you can use for any prolonged perios without corrosion problems is 1.4462 Chrome Duplex.
Unfortunately it has a price tag 4 times the one of galvanized steel - which did keep me away from it so far ;)


Re: Maramu anchor and chain suggestions

Craig & Katherine Briggs SN 68 Sangaris Tropic Isle Harbor, FL
 

James,
Can't comment on the fit of the Mantus on a Maramu - I have one on my Santorin and it's been great. Mantus has a schematic of their anchors on their website - I down loaded that and did a mock-up with cardboard to be sure it would fit the bow roller. It is fine and has about 1" of gap between the tip of the fluke and the stem - it has never hit the fiberglass while being raised.
Craig Briggs, SN68 Sangaris

Re: Sharki shaft alternator

amel46met
 

Hi Olivier 
Thanks for the information 
Will give it a try with this good Caribbean wind 
Tom Deasy 
S/Y Aphrodite 
Maramu # 125


On Mar 10, 2019, at 8:36 PM, Warren Traill <trailz@...> wrote:

Interesting information Olivier. I have another question. My propeller is fixed. And I have no shaft a;ternator.

When I am sailing the shaft continues to rotate.

Is it good practise to engage reverse to stop the shaft rotating if I wish. Or is there some potential for damage?

Thanks,

Warren

Manon2

Sharki #15

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Beaute Olivier via Groups.Io
Sent: Sunday, 10 March 2019 10:51 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

 

Hello Tom,

 

the prop shaft alternator can work with a MAXPROP. It is a bit tricky, but you should try this:

-while sailing (above 4 knots), start the engine and engage reverse idling

-while your engine is reversing, turn ON the key switch of your alternator

-then set the engine to neutral and stop it

Your MAXPROP should keep the reverse position unless:

a) your batteries are charged enough and the alternator will not oppose much power to the prop, therefore the prop will spin faster and will finally open and the shaft will stop

b) your boat speed is high (while surfing) and the prop will spin faster and will open

 

Good luck.

 

Olivier

 

 

On Friday, March 8, 2019, 7:24:20 PM GMT+1, amel46met <onboardaphrodite@...> wrote:

 

 

Hello 

Does anyone in the group use a Max Prop with the shaft alternator I have read that it does work any tricks?

Tom Deasy 

Maramu 125


On Mar 8, 2019, at 8:10 AM, marklesparkle59 <marklesparkle59@...> wrote:

Thanks Ian. I am struggling to get to grips with the electrical system. The engine/starboard alternator is charging but not sure about the domestic/port alternator and I dont really understand the data my shiney new clamp meter is giving me. I need to read a book I think.

Mark

 

 

 

Sent from my Samsung device



-------- Original message --------
From: Ian <parkianj@...>
Date: 08/03/2019 11:52 (GMT+00:00)
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Sharki shaft alternator

Mark
On my Santorin you have to put the key in and switch on (next to your ameter). The green light comes on. It sends a current to the alternator to excite it and start it charging. You should turn off when finished using it and put your gear lever in reverse to stop the alternator charging before switching on the engine.
I believe the diodes in each of the engine and alternator should prevent any ‘issues’, but that is the prescribed Amel method.
My knowledge of electrics is limited - someone with a better understanding may chip in here.
The Santorin prop shaft pulley is quite a bit bigger too, so will turn the alternator faster. There is a significant drop in prop shaft speed as soon as you turn the alternator on.

Ian