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Re: Onan Generator removal
Hi Chris,
We've done this three times on our SN which has a 6kw Northern Lights genset. Very easy to do with the ship's halyards and then you can swing it over the dock with the main boom - no boatyard needed. Cheers, Craig - SN68 Sangaris, Tropic Isle Harbor, FL
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Re: A54 bow thruster emergency switch
Wolfgang Weber <webercardio@...>
Hello to the group, One word about the BT emergency switch. Amel recommended to push (without load)the emergency switch regularly several times to prevent malfunction. There might be a risk of corrosion. Wolfgang Weber SY Elise Amel 54 #162
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Re: A54 bow thruster seal replacement?
Scott SV Tengah
Dean, When I was troubleshooting my 1 year old replacement BT motor, those were the words out of the mouth of the lead tech at Sleipner USA (IMTRA). They had some trouble with lifepo4 equipped boats because they designed it to operate at much lower voltage than the lifepo4 batteries provided under load. Perhaps they were trying to get out of warranty work, but that's what they stated. Turns out my trouble was something else, btw. Regarding the shutoff switch, apparently newer A54s came with an emergency shutoff switch in the bow locker. Olivier suggested in his survey that I install one. I did a bit of asking around and my understanding is there was an A54 that had the solenoids melt closed (probably due to high amperage as a result of low voltage) and thereafter it was recommended that you have the emergency shutoff switch and run the genset and chargers when you're using the BT. It was third hand, but I also definitely have read, more than once, the recommendation to run the genset/chargers in docking operations. I had the Sleipner shutoff switch but it's not that waterproof and quickly failed in that sometimes wet bow locker. I now have three 450A fuses, one for each pair of batteries, installed. I also have a third battery switch at the passage berth dedicated to turning off the BT power in an emergency.
On Mon, Dec 14, 2020 at 5:22 PM Dean Gillies <stella@...> wrote: Hi Scott,
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Re: Bow Thruster Issue SM 292
That’s exactly what Amel suggested we do when running the bow thruster.
toggle quoted messageShow quoted text
~~~⛵️~~~Matt
On Dec 14, 2020, at 10:57 PM, Karen Smith via groups.io <karenharmonie@...> wrote:
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Re: Bow Thruster Issue SM 292
Karen Smith
Heinz,
If I understand your problem, when you run the bow thruster, your instruments shut down, and the bow thruster stops after a few seconds. It sounds like the high power draw of the bow thruster (>480 Amps) is pulling down the voltage of the batteries to the point where the instruments shut down. My first guess is that that problem is the batteries are weak. It will not completely fix the problem, but a help would be to run the generator with all battery chargers whenever you are running the bow thruster. Bill Kinney SM160, Harmonie Fort Lauderdale, FL, USA
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Re: A54 bow thruster seal replacement?
Hi Scott,
On Tue, Dec 15, 2020 at 11:53 AM, Scott SV Tengah wrote: That said, lower than 22v is very plausible with normal batteries.In an Amel, yes, but not always. A fully charged 115Ah AGM (such as Rolls S12-128AGM) will deliver 67A for two minutes while retaining terminal voltage above 12V. Put 12 of these in a 2S6P arrangement and you get 400A at 24V. That's almost 10kW delivered to the cable with terminal voltage above 24V. In an Amel the voltage drop at 400A would be around 2V, hence 22V delivered to the BT. However, in a boat where the batteries are located close to the BT, then the voltage drop in the cable can be much less, so the delivered voltage to the BT will be much closer to 24V. I find it difficult to believe Sleipner would produce a "24V" BT which does not operate reliably if powered with 24V which is exactly what LIthium batteries would provide in an Amel cabling setup. Btw I didn't quite understand ... why (and where) did Amel ask you to install a shut off switch? I understand there is no breaker/fusing on the BT cables, which is interesting in itself. Cheers, Dean SV Stella A54-154
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Re: Onan Generator removal
Karen Smith
Chris,
Not exactly what you were asking for, but hopefully some help nonetheless. Just a couple months ago we removed our MDKD 6.5 KVA generator from our engine room past our Volvo. Before the lift, I stripped off all the bolted on bits I could. Fuel filter, exhaust manifold, etc. and unbolted it from the pan so we weren’t lifting that as well. It would have fit without all this, but is still seemed a good idea. We tied a line from the crane hook, down into the engine room so the hook was up and out of the way. A piece of plywood leaned up against the engine served as a skid so it didn’t bounce against the Volvo. Some kind of solid guide on the port side of the cockpit opening would be a good idea to keep the lift line from abrading the engine room insulating foam. Thera was a LOT of extra room, not a squeak fit at all. Bill Kinney SM160, Harmonie Fort Lauderdale, FL, USA
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Re: A54 bow thruster seal replacement?
Scott SV Tengah
Dean, I agree that at higher voltages, current should just go down. That said, lower than 22v is very plausible with normal batteries. Put that big of a load on even a big lead acid bank and I would expect a big voltage drop. Amel suggested I add the emergency shut off switch. I believe it's for that reason.
On Mon, Dec 14, 2020, 14:32 Dean Gillies <stella@...> wrote: On Tue, Dec 15, 2020 at 04:07 AM, Scott SV Tengah wrote:
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Re: A54 bow thruster seal replacement?
On Tue, Dec 15, 2020 at 04:07 AM, Scott SV Tengah wrote:
Sleipner said that they spec theirs to expect 21-22 volts or thereabouts under load and we are closer to 24.5-25Scott, that's an interesting point. The cabling to the BT is 70sqmm (according to Amel drawings), and the run must be about 10m or so? The voltage drop in the cable at say 360A (8kW@24V) will be about 1.5V, plus a bit for connections and internal resistance of the battery. So the voltage will definitely be higher than 22V, but should be less than 24V. However, I don't believe the BT will be damaged in any way by a 24V drive. It should just take less current. Don't forget that many (most?) BT installations have dedicated LA batteries in close proximity, with minimal voltage drop in cabling. Amel's are a little unusual in having the batteries so far away from the BT. If the Sleipner product did not work properly at 24V I would be very surprised. I suspect their comment reflects their view that it will "still work" down at those voltages rather than not working at 24V. Lithium is still on my mind! Cheers Dean SV Stella A54-154
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Re: Onan Generator removal
Here you go: https://www.youtube.com/watch?v=CfUXTi_UXn0&ab_channel=SailingSVDelos
With best regards,
Mark
Skipper Sailing Vessel - Cream Puff - SM2K - #275 Currently cruising - Tahiti, French Polynesia www.creampuff.us
From:
main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On
Behalf Of Chris Doucette
Does anyone know if you can remove an Onan Type 7MDKAV-2317
MDKAV 7 kW 50 Hz Diesel out of a later model SM without removal of the
Yanmar engine? If you have done this would love to here your
experiences.
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Re: Super Maramu Spinnaker Halyard Bracket Shackle Size
Mark McGovern
Chris,
I guess you are the SM owner that I met at Bert Jabin's that had his masts down. If you ever need any pics of your masts I have a ton of them. Just ask me. ;) -- Mark McGovern SM #440 Cara Deale, MD USA
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Re: Super Maramu Spinnaker Halyard Bracket Shackle Size
Chris Doucette
Hmm this picture looks surprisingly familiar--- no wait! that is my mast! lol
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Re: A54 bow thruster seal replacement?
Yes, using a piece of the right size steel bar. It was a lot of pressure with a mechanical puller.
On Sun, Dec 13, 2020 at 11:24 PM Scott SV Tengah <Scott.nguyen@...> wrote: Ok, we're now digging into it and here's where we're stuck:
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Super Maramu Spinnaker Halyard Bracket Shackle Size
Mark McGovern
Does anyone know the correct size shackle to fit the spinnaker halyard bracket on the main mast on the SM? It's the shackle circled in the picture below:
Thanks, Mark -- Mark McGovern SM #440 Cara Deale, MD USA
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Bow Thruster Issue SM 292
There was no problem on my Super maramu 2000 I did it in May
toggle quoted messageShow quoted text
Heinz sm2000, quetzal, 292
Am 14.12.2020 um 20:01 schrieb Chris Doucette <amaroksailing@...>:
--
Hello
Since yesterday when I tried to park in a box in a marina in Auckland my bow thruster motor failed.
If I turn the beam to the left or right the whole power supply breaks down for a moment. After that the power is back.
I took the rudder off and it can be turned perfectly by hand.
But the same happens with the engine. No power for a few seconds, all instruments off, no rotation of the motor.
Does anyone know this problem.
Does anyone know how I can find out if it's the motor or maybe a relay that doesn't work.
Can I test the motor without a relay, maybe on the 4 cables marked D1, D2, and A1, A2?
I am grateful for a quick answer. Heinz SY Quetzal, SM 2000, 292
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Generator Removal
Chris Doucette
Does anyone know if you can remove an Onan Type 7MDKAV-2317 MDKAV 7 kW 50 Hz Diesel out of a later model SM without removal of the Yanmar engine? If you have done this would love to here your experiences.
Thanks! Chris Amarok SM385
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Re: Secondary Saltwater Manifold SMs & 54s, and possibly some Santorins, Mangos, and Maramus
Yes, For the 54 we are finalizing a design that will look like the following. I expect that it will mount slightly higher than the original where there is 10mm clearance between the Cockpit drain and the bulkhead insulation. The cockpit drain will be in front of the Blue Coupling. It will ship with a new 35mm hose that connects to the Primary Saltwater Manifold. Other issues are still being worked out and a test install will be done on a 54. It will likely be Jan or Feb of next year before the 54 is available to purchase. The SM should be available sooner. I need to find a SM owner willing to test the install before it is available for ordering. Someone in Europe would be best. Below is the 54 design as it is currently:
On Mon, Dec 14, 2020 at 12:25 PM Stefan Schaufert <mail@...> wrote: Dear Bill,
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Re: Secondary Saltwater Manifold SMs & 54s, and possibly some Santorins, Mangos, and Maramus
Stefan Schaufert
Dear Bill,
thanks a lot for this project. I am interested. But mine looks a bit different (1 connector right of the cockpit drain, 3 (4) left, no connector behind the cockpit drain). That is why I like to see it in advance. Best regards and a Merry Christmas to all Stefan A 54 #119 Lady Charlyette, currently Bahamas
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Re: Secondary Saltwater Manifold SMs & 54s, and possibly some Santorins, Mangos, and Maramus
Peter Tiner
Yes interested.
Thanks Bill \Peter SY Maiken A54 #52
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Re: Secondary Saltwater Manifold SMs & 54s, and possibly some Santorins, Mangos, and Maramus
I have created some confusion regarding SMs. Early model SMs have only a Primary Saltwater Manifold. Later model SMs and all 54s have a Primary Saltwater Manifold and a Secondary Saltwater Manifold. At this time I am only working on the Secondary Saltwater Manifolds. Bill
On Mon, Dec 14, 2020 at 8:30 AM Stefano Biffi <cptbiffi@...> wrote:
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