Amel Maramu Jib sail halyard snapped
Good afternoon Amel community. I’ve purchased an amel Maramu 46 and slowly learning the basics of it. While sailing yesterday the jib sail halyard snapped and I need to replace it. My problem is this. I just realized they are no spare halyard to pull someone on top of the mast to do the necessary fix. The only solution I see for now is attaching another temporary rope to the mainsail halyard and try to use it to create a temporary halyard to bring someone up the main mast to make the necessary repair to add a new halyard to the jib sail. |
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Temp Sensors
Thomas Kleman
I recently bought and installed the Blue Sea 1841 M2 temp sensor. I feel like this data is so important that I removed one of my passive VHF speakers in the cockpit and placed it facing me.
Question to the group- There are 4 sensors that can be used. I've placed them 1) on engine muffler inlet, 2) on genset muffler inlet, 3) on 100 amp charger (lost one due to ambient heat), and 4.....yet to be decided. My battery bank has sensors already. Any ideas or modifications to my initial placements would be appreciated. Tom and Kirstin SV L'ORIENT SM2K 422 Oahu |
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Re: Prop is spinning freely
Thanks for that, Danny. I was told the same thing by Yanmar. However, I am reluctant to repeat it because I assume it will depend on the transmission installed on the engine. And to further confuse the issue Volvo and probably others have moved to electric gear changing transmissions which I assume require the ignition to be ON. This is the reason I don't recommend it. 😀 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 Mon, Jan 4, 2021, 2:00 PM Danny and Yvonne SIMMS <simms@...> wrote:
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Re: Prop is spinning freely
Danny and Yvonne SIMMS
Hi Bill, Volvo recommend either freewheeling or in gear. However care needs to be taken that either forward or reverse gear is selected depending on which firmly stops the spinning, the wrong one will allow slow revolution of the shaft from partially closed clutches which of course will cause wear. How to know which? When sailing observe the shaft rotating, put it into gear, the correct one will produce a satisfying clunk and the shaft will stop, the wrong one will slow the shaft but not fully stop it. Regards Danny SM 299 Ocean Pearl Mangonui New Zealand On 05 January 2021 at 04:45 CW Bill Rouse <brouse@...> wrote: |
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Re: Prop is spinning freely
For your information, I have seen all sorts of "fixes" for worn-out caliper bushings when performing Pre-Purchase consulting. This photo takes the Grand Prize Award of all I have seen. It includes a wooden clothespin and wire, both circled in red. The new owner of this SM replaced the calipers with a slightly different model caliper from the same Italian manufacturer as the original. Amel SAV provided the new caliper:
On Mon, Jan 4, 2021 at 9:45 AM Bill Rouse <brouse@...> wrote:
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Re: Prop is spinning freely
Chris, There is usually not a simple answer to your question. The most common issues for non-braking are mechanical within the caliper mechanism.
Non-braking is usually caused by the following in order of probability:
The most common issue for not releasing is hydraulic in nature. The quarter that Courtney refers to will usually solve the problem when the bushing is worn, or the brake pad is worn. It is possible that the Italian-made Caliper you have is no longer made. If so, Amel will supply you with a new model that will work, but not necessarily fit without minor modification. I believe that you can either leave the prop free spinning or place the transmission in gear to stop the spinning, however, I do not recommend either of those because I have not been able to verify the long-term issues, if any, in doing either.
On Sun, Jan 3, 2021 at 9:37 AM Chris Likins <likinsca@...> wrote: We have A54 #133. Today when sailing I noticed that the prop was spinning freely(in reverse) each time a wave would pass under us. It’s easy to see that the shaft brake is not engaging when the engine is in neutral or shut down. Referencing Bill Rouses book p.305, it reads that the hydraulic shaft OPENS the calipers when pressurized by the transmission. Currently the shaft is retracted into the piston at all times allowing the calipers to remain open. I understand that the calipers are supposed to spring shut on the disk when transmission pressure is lost on the shaft. I am a bit confused by this as there is no mechanical connection between the hydraulic shaft and the outer caliper. It seems like the calipers should close when the shaft is extended.. So my questions are |
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Re: Prop is spinning freely
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Re: SM 2000 Mizzen Spreader Deck Light
scentstone
Hi Jeff, It's nos available with an (expensive) LED bulb which you'll see on this page. https://www.svb24.com/en/aqua-signal-kiel-led-floodlight-white.html My two cents is that, after some years the small teeths which hold the buld wouls be fragile (as well on your main mast light = same brand, same bulb, different model) and it would be a great idea to change it for a brand new. Lift you up, use a drill to remove "rivets" and install the new. Fred |
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Re: SM 2000 Mizzen Spreader Deck Light
Jeff Williams
Hi Gary, I was referring to the cockpit area light mounted on the forward aspect of the mizzen mast. The old bulb housing was very rusted along with the internal mount for the bulb. I've ordered a new bulb but am not 100% sure how to mount it inside the housing. It is a 50W PAR36 bulb, not LED. Jeff
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Re: SM 2000 Mizzen Spreader Deck Light
Jeff, Are you referring to the cockpit area light mounted on the forward aspect of the mizzen mast, or are there actually spreader lights on the mizzen mast spreaders? If the later is the case I don't believe spreader lights were standard on SMs. At least spreader lights weren't standard thru hull # 335 and I suspect the same for # 379. Others might have information on post # 335 hull numbers. A photo would be helpful.
All the best, Gary S. Silver, M.D. , until recently the original and only owner of s/v Liahona Amel SM 2000 # 335, Puerto Del Rey Puerto Rico |
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Re: Prop is spinning freely
Where the plunger comes out of the cylinder to push against the brakes. You tape a quarter to the spot on the brakes where the plunger contacts it this will increase the compression of the pads
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On Jan 3, 2021, at 4:33 PM, Ken Powers SV Aquarius <ken@...> wrote:
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Re: Prop is spinning freely
Chris,
There is a spring inside the brake caliper piston cylinder that is supposed to push the piston and keep the pads pressed against the brake disc when the engine is not running. The caliper is semi floating like a car disc brake There is an adjustment bolt on the aft end of the the cylinder that allows you to increase the pressure on the spring. Adjusting this, may or may not help. If the pads are badly worn, it won't help, you need new pads. I had this issue when in the Pacific a few years ago and I solved it by adding an adjustment bolt on the forward caliper so I could make the brake just close. It's quite a simple system really. Cheers Alan Elyse SM437 |
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Re: Prop is spinning freely
Ken Powers SV Aquarius <ken@...>
On Aquarius we put her in Reverse to lock the shaft. Would Chris be able to do this? Or will it damage the transmission?
Ken Aquarius |
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Re: Prop is spinning freely
Ken Powers SV Aquarius <ken@...>
Hello Courtney,
Chris is still having a problem. Please write more about the procedure to correct the problem, I can't understand how to correct the problem. Is your comment is missing punctuation. "See where the plunger engages the brakes tape a quarter in this spot then all is well" Thanks! Ken Aquarius |
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Electrical Panel LED backlighting
Doug Smith
Greetings to all, I was pretty unhappy with the lighting on my electrical panel, then discovered that most of the bulbs were not working. Thanks to previous emails from Arno regarding the repair. Here is more detail for those of you who would like to undertake this project.
Doug Smith S/V Aventura, Amel 54-113 Patuxent River, MD USA |
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Re: Prop is spinning freely
Easy fix
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See where the plunger engages the brakes tape a quarter in this spot then all is well Also voyage will be much quieter Cheers Courtney Trippin 54#101 On Jan 3, 2021, at 10:37 AM, Chris Likins <likinsca@...> wrote:
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Prop is spinning freely
Chris Likins
We have A54 #133. Today when sailing I noticed that the prop was spinning freely(in reverse) each time a wave would pass under us. It’s easy to see that the shaft brake is not engaging when the engine is in neutral or shut down. Referencing Bill Rouses book p.305, it reads that the hydraulic shaft OPENS the calipers when pressurized by the transmission. Currently the shaft is retracted into the piston at all times allowing the calipers to remain open. I understand that the calipers are supposed to spring shut on the disk when transmission pressure is lost on the shaft. I am a bit confused by this as there is no mechanical connection between the hydraulic shaft and the outer caliper. It seems like the calipers should close when the shaft is extended.. So my questions are
1. Can someone help explain this system in more detail? 2. What position should the shaft be in when pressurized and not pressurized? 3. Is it most likely a bad spring on the caliper? 4. Most importantly for now.. Is it ok to allow the prop to spin freely for the duration of the passage or would it be better on the shaft if we remain in forward gear. Thank you for the help! |
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Re: "Apple is examining a chemistry for the car battery called LFP, or lithium iron phosphate, for its car", that will bring the cost down for all of us
This will not likely have a trickle down effect for marine batteries anytime soon. The key differentiator for Apple is the "monocell" cell design, not the LFP chemistry. It's their way of trying to make up for the lower energy density of the LFP chemistry compared to other Lithium Ion chemistries like the NCA chemistry (lithium-nickel-cobalt-aluminum) that Tesla mainly uses. Tesla batteries are made from older, proven cylindrical cell design as well as a different NCA chemistry. Scott, your Victron batteries actually use prismatic LFP cells, not cylindrical cells: https://shop.pkys.com/Ever-wondered-what-is-inside-a-Victron-Lithium-Battery_b_167.html
Most other drop-in batteries like Battleborn do use cylindrical LFP cells to make their batteries. -- Mark McGovern SM #440 Cara Deale, MD USA |
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Re: Placement of Beta 60 in an Amel Maramu
#replacement
eric freedman <kimberlite@...>
Thank You Danny, Thank you for the explanation.
I am headed off to St Maarten for a new Yanmar mid January.
It is working perfectly and all the fluid samples are great. However with over 7,000 hours, I thought I would just replace it and never have to worry about something going bang on a passage . I was concerned about the possibility of breaking the oil pump, a wrist pin, or a connecting rod. Fair Winds Eric Kimberlite Amel Super Maramu #376
HAPPY New Year From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Danny and Yvonne SIMMS
Sent: Thursday, December 31, 2020 3:28 PM To: main@AmelYachtOwners.groups.io Subject: Re: [AmelYachtOwners] Placement of Beta 60 in an Amel Maramu #replacement
Hi Eric, it wasn't an hours issue. What caused its demise was the misunderstanding about rpm. It was maxing at 2800 rpm under load and the consensus on the forum was that there must be something wrong since under no load it would easily do 4000. Many of us tried to resolve what wasn't an issue. So when after about 2 years and 25000 sailing miles suddenly it would rev up to 3500 under load I thought it had resolved whatever was wrong. HOWEVER 2800rpm was the correct max under load and the ability to rev higher was caused by a jammed wastegate on the turbo. This is intended to open progressively to reduce the boost as revs increase. So with it jammed closed the boost pressure was excessive, hence the higher revs achieved. Not that I ran it at high revs a lot, but over several years the excess pressure damaged the rings and pistons and eventually I couldn't get better than 2200 rpm under load. I tried everything without success including quite a lot of Volvo specialist time. So one day, having had the engineer on board yet again I said b....it and ordered a new one. In retrospect it would have made more sense to do a recondition on the TMD22 since I had replaced most of the bolt ons. So you TMD owners. 2800 load rpm is correct and if you are getting more, check the waste gate. Happy New Year to you all Danny SM 299 Ocean Pearl
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Re: Placement of Beta 60 in an Amel Maramu
#replacement
Danny and Yvonne SIMMS
Hi Eric, it wasn't an hours issue. What caused its demise was the misunderstanding about rpm. It was maxing at 2800 rpm under load and the consensus on the forum was that there must be something wrong since under no load it would easily do 4000. Many of us tried to resolve what wasn't an issue. So when after about 2 years and 25000 sailing miles suddenly it would rev up to 3500 under load I thought it had resolved whatever was wrong. HOWEVER 2800rpm was the correct max under load and the ability to rev higher was caused by a jammed wastegate on the turbo. This is intended to open progressively to reduce the boost as revs increase. So with it jammed closed the boost pressure was excessive, hence the higher revs achieved. Not that I ran it at high revs a lot, but over several years the excess pressure damaged the rings and pistons and eventually I couldn't get better than 2200 rpm under load. I tried everything without success including quite a lot of Volvo specialist time. So one day, having had the engineer on board yet again I said b....it and ordered a new one. In retrospect it would have made more sense to do a recondition on the TMD22 since I had replaced most of the bolt ons. So you TMD owners. 2800 load rpm is correct and if you are getting more, check the waste gate. Happy New Year to you all Danny SM 299 Ocean Pearl On 31 December 2020 at 17:22 eric freedman <kimberlite@...> wrote:
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