T-Pain Is On A Boat: June 2025

Monday, June 30, 2025

Re: [electricboats] One cell out of whack. Replace it or stay with it.

Again, that JK BMS itself can only bypass 2amps around a cell. So if more than 2amps of current is coming into the pack trying to charge the cells, bypassing alone will not keep one or more cells from going nuclear… Rather, you need each and every charging source to be informed to throttle back its charging current to ensure the BMS can do its job.

I imagine that most of our BMS setups merely balance cells and do not directly control shore charger, let alone solar and wind. In many or most cases, that's okay for shore power charging since the charging is over many hours, the cells are expected to be quite balanced, charging target voltage is appropriately safe and the charger's output current throttles back as the target is reached. But can the same be said for these solar and wind charge controller outputs? If either's target voltage is inappropriately high, you can easily imagine exceeding the BMS bypass capability.

From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of Dan Pfeiffer
Sent: Sunday, June 29, 2025 6:33 PM
To: electricboats@groups.io
Subject: Re: [electricboats] One cell out of whack. Replace it or stay with it.

Assume BMS processor is reading cell voltage and passing it along to other software inside it. Otherwise check wiring to that cell anyway. Agree very bad running cell to 4.? volts. Might consider swapping it out after fault is fixef
Best regards
Lee Eldridge
0427874796

On 30 Jun 2025, at 02:54, Peter Knowlton via groups.io <pqknowlton=gmail.com@groups.io> wrote:
Question for those who have familiarity with the JK BMS's. I have 16 Eve lifepo4 cells for a 48v 280a battery bank. I have 6 - 24v, 220w Newpowa solar panels and a Silentwind 400 for wind generation. The Silentwind has a dedicated Silentwind PWM charger and the panels have a Victron Smart solar charger 150/30. I am using a JK 300a BMS. A couple weeks ago I was testing all the components to make sure they were acting as they should. So, I turned on the solar and wind chargers, went back to land for a few hours, and when I came back there was one cell that was 4.29v and the rest were around 3.35v. (See the first screen shot below.) Fearing a runaway cell, which will expand horribly if the charging condition is not stopped, I turned off the solar and the wind. After a couple hours all the cells were back down to around 3.35v, including the 4.29v cell. Ran the engine at half throttle for about half an hour the next day and the cells stayed in synch with each other the whole time as they were collectively discharged by running the motor. Then, day before yesterday I tested the charging, again, using solar and wind and, again, after a few hours, this same cell went up to 4.20v and every other cell was around 3.35v. When I turn off the charging the cell, again, goes back down to 3.30v and, gets in balance with other cells as they all settle to .004v of each other after a couple hours. Shouldn't the BMS shut down any cell that goes above 3.65v if that's what the over protection voltage shut-off is set at? I am concerned that the BMS isn't shutting off the charging for the "runaway" cell when it reaches 3.65v, which is the charging high voltage protection shut-off I have set on these cells. I just don't know if its the BMS or the cell itself that is the problem, since I believe any cell can get overcharged if the BMS is not working properly for that cell. Although the BMS is brand new. I am thinking of switching the BMS wire for the runaway cell to another cell and see if the same overcharging condition happens to that cell and see if the original cell, with a different BMS wire now, stays at the same voltage of the other cells or overcharges again. Attached are some screen shots of the cells and the setup through the JK BMS app. Any ideas or suggestions appreciated. You all have provided me over the years with the most thoughtful advice and I thank you for that. If you can't open the zip file of screen shots I can send them individually.

Peter Knowlton
Dartmouth MA

Re: [electricboats] Electric Motor for 40ft Sailboat

I have a 48v electric system. I would recommend you add a couple battery equalizers.

On Mon, Jun 30, 2025 at 3:25 PM gsxbearman via groups.io <gsxbearman=yahoo.com@groups.io> wrote:

the electric yacht 15LC is water cooled and rated by them for 38ft and 18,000 lbs. seems to use the same ME1616 motor.

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Re: [electricboats] Electric Motor for 40ft Sailboat

I love it!

Going this route you can keep the same pack, but split it in two. And you can use the same charger (just need 2 of them). In my case this part would be simple. Adding protection also wouldn't be much of a hassle. Definitely going to consider this later…

From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of Randy Cain via groups.io
Sent: Monday, June 30, 2025 5:05 AM
To: electricboats@groups.io
Subject: Re: [electricboats] Electric Motor for 40ft Sailboat

Consider going with 96v. It's not that much more complicated than 48v but gives you twice the horsepower out of the motor when you need it. Most of the time you won't need more than 5kw. A +48/-48 bipolar isolated system (fuses/breakers & contactors on both rails with the safety ground between the two 48v series-connected banks) is also a possibility.

Re: [electricboats] Electric Motor for 40ft Sailboat

the electric yacht 15LC is water cooled and rated by them for 38ft and 18,000 lbs. seems to use the same ME1616 motor.

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Re: [electricboats] One cell out of whack. Replace it or stay with it.

You wouldn't want to switch the wires around, you would want to switch the cells around.

The sensor wire for cell #9, for example, needs to be on the cell in the #9 spot, so if cell #9 is suspect then swap cell #9 with maybe #16, and leave the #9 sensor wire on spot #9.

I don't think you have a cell problem, I think you have a BMS problem or BMS settings problem.

I don't think JK makes a paralell BMS in the 16s 300A variety so I think it is safe to assume that you won't have to worry about charging on the correct connection on the BMS, Both charging and power use should be going through the same connection on the BMS.

When ANY cell voltage gets above the cell OVP set point the BMS should trigger protection and shut off the whole battery (but the Bluetooth should still work).

How is your SOC indicator working? If it is working like you want then disregard the following, but if it is not working like you want, try changing the SOC-100% to 55.12V (3.445*16) and the SOC-0% to 43.2V (2.7*16).

How is your cell balancing working? The pics show the cells balanced, but they also show that balance is "off". Does it only show balancing as "on" when it is actually balancing?

I am wondering if Start Balance Voltage is cell voltage or pack voltage. Same with Power off Voltage.

If this were my set-up I would also have my Charge OCP Delay set at 10s and it should always be set lower than the Charge OCPR time. I would also change Discharge OCP Delay to 60s and increase the Discharge OCPR to at least 120.

I always want my release times larger than my protection times, but that is just my 2 cents.

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Re: [electricboats] Electric Motor for 40ft Sailboat

I have a CT 41 which is 28000 lbs. Got an AC 34 motor (air cooled) with a Curtis F6 controller from Thunderstruck. I, originally, was going to do 96v but was convinced to go 48 volts for safety reasons. The 48v seems to produce enough power and is way more responsive than a diesel. I have a 48v battery bank of 16 Eve 3.2v / 280a lifepo4 cells and a 24v house battery with 8 of the same cells. Both banks have a JK BMS. I could go to 96 volts but, so far, am ok with 48v. I can get 4 knots but don't know for how long, yet. I have a Honda 2000 generator that I run on propane. Doesn't really provide enough power and will, likely, be replacing it with something at least 3kw sometime down the road. I am still in the "figuring this out stage", mostly having some issues and steep learning curve with the batteries, balancing, etc., etc.. Very happy with the motor so far. I don't know if I am going to stick with the Eve cells. They are still less expensive than other Lifepo4 batteries, although the prices seem to be coming down. They are much easier to handle at 11lbs per cell, versus around 70lbs for a self-contained 12v / 280a lifepo4 battery, which is an issue for me, as an old geezer. Do lots of research and talk with as many people as you can who have done this before. Take your time before you make purchases. I have found this group to be some of the most knowledgeable people around who have all sorts of experience, which is still in very short supply. Especially if you are going to do it yourself and not use already assembled units. I would say, "good luck", but "luck" his little to do with what you are wanting to do. Careful planning, taking your time, research, and asking the questions you are starting to ask are your friends.

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Re: [electricboats] Electric Motor for 40ft Sailboat

Na. Safety wiring regs means you need a registered electrician and "110v wiring rules". But split supply is a border case I suspect.

Best regards

Lee Eldridge

0427874796

On 30 Jun 2025, at 21:41, sw via groups.io <v1opps=yahoo.com@groups.io> wrote:

I thought coast guard limited it to 48v ?

On Monday, June 30, 2025 at 05:05:19 AM PDT, Randy Cain via groups.io <randylcain=gmail.com@groups.io> wrote:

Consider going with 96v. It's not that much more complicated than 48v but gives you twice the horsepower out of the motor when you need it. Most of the time you won't need more than 5kw. A +48/-48 bipolar isolated system (fuses/breakers & contactors on both rails with the safety ground between the two 48v series-connected banks) is also a possibility.

Re: [electricboats] Electric Motor for 40ft Sailboat

Ahh split supply!! Indeed a possibility but with great care fir charging and breakers. 96 will reduce current cobsiderably. Now you got me thinking.

Best regards

Lee Eldridge

0427874796

On 30 Jun 2025, at 21:36, Randy Cain via groups.io <randylcain=gmail.com@groups.io> wrote:

Consider going with 96v. It's not that much more complicated than 48v but gives you twice the horsepower out of the motor when you need it. Most of the time you won't need more than 5kw. A +48/-48 bipolar isolated system (fuses/breakers & contactors on both rails with the safety ground between the two 48v series-connected banks) is also a possibility.

Re: [electricboats] Electric Motor for 40ft Sailboat

I thought coast guard limited it to 48v ?

On Monday, June 30, 2025 at 05:05:19 AM PDT, Randy Cain via groups.io <randylcain=gmail.com@groups.io> wrote:

Re: [electricboats] Electric Motor for 40ft Sailboat

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Sunday, June 29, 2025

Re: [electricboats] One cell out of whack. Replace it or stay with it.

I would verify cell voltages with a DMM. Are they the same as reported by the BMS? You need a pretty good DMM for this?

Also, your balance trigger voltage is set at 0.010 V. The problem cell is 0.008V off in the screen grab. That means balancing will not be active? If that cell is high of the others it would run away as you get to the end of the charge curve. That's normal. But the BMS should absolutely shut down charging when that happens. That's basically it's most important function? Perhaps the higher trigger voltage is keeping you from actually getting the cells in balance?

Hopefully you don't have damaged cell...but it seems like it is low for capacity and hitting the end of the curve before the others?

Dan Pfeiffer

On 2025-06-29 5:38 pm, Lee Eldridge wrote:

Hmm BMS sounds bad. If new this is higher possibility.

Assume BMS processor is reading cell voltage and passing it along to other software inside it. Otherwise check wiring to that cell anyway. Agree very bad running cell to 4.? volts. Might consider swapping it out after fault is fixef

Best regards
Lee Eldridge

0427874796

On 30 Jun 2025, at 02:54, Peter Knowlton via groups.io <pqknowlton=gmail.com@groups.io> wrote:

Question for those who have familiarity with the JK BMS's. I have 16 Eve lifepo4 cells for a 48v 280a battery bank. I have 6 - 24v, 220w Newpowa solar panels and a Silentwind 400 for wind generation. The Silentwind has a dedicated Silentwind PWM charger and the panels have a Victron Smart solar charger 150/30. I am using a JK 300a BMS. A couple weeks ago I was testing all the components to make sure they were acting as they should. So, I turned on the solar and wind chargers, went back to land for a few hours, and when I came back there was one cell that was 4.29v and the rest were around 3.35v. (See the first screen shot below.) Fearing a runaway cell, which will expand horribly if the charging condition is not stopped, I turned off the solar and the wind. After a couple hours all the cells were back down to around 3.35v, including the 4.29v cell. Ran the engine at half throttle for about half an hour the next day and the cells stayed in synch with each other the whole time as they were collectively discharged by running the motor. Then, day before yesterday I tested the charging, again, using solar and wind and, again, after a few hours, this same cell went up to 4.20v and every other cell was around 3.35v. When I turn off the charging the cell, again, goes back down to 3.30v and, gets in balance with other cells as they all settle to .004v of each other after a couple hours. Shouldn't the BMS shut down any cell that goes above 3.65v if that's what the over protection voltage shut-off is set at? I am concerned that the BMS isn't shutting off the charging for the "runaway" cell when it reaches 3.65v, which is the charging high voltage protection shut-off I have set on these cells. I just don't know if its the BMS or the cell itself that is the problem, since I believe any cell can get overcharged if the BMS is not working properly for that cell. Although the BMS is brand new. I am thinking of switching the BMS wire for the runaway cell to another cell and see if the same overcharging condition happens to that cell and see if the original cell, with a different BMS wire now, stays at the same voltage of the other cells or overcharges again. Attached are some screen shots of the cells and the setup through the JK BMS app. Any ideas or suggestions appreciated. You all have provided me over the years with the most thoughtful advice and I thank you for that. If you can't open the zip file of screen shots I can send them individually.

Peter Knowlton

Dartmouth MA

Re: [electricboats] One cell out of whack. Replace it or stay with it.

Hmm BMS sounds bad. If new this is higher possibility.

Assume BMS processor is reading cell voltage and passing it along to other software inside it. Otherwise check wiring to that cell anyway. Agree very bad running cell to 4.? volts. Might consider swapping it out after fault is fixef

Best regards

Lee Eldridge

0427874796

On 30 Jun 2025, at 02:54, Peter Knowlton via groups.io <pqknowlton=gmail.com@groups.io> wrote:

Question for those who have familiarity with the JK BMS's. I have 16 Eve lifepo4 cells for a 48v 280a battery bank. I have 6 - 24v, 220w Newpowa solar panels and a Silentwind 400 for wind generation. The Silentwind has a dedicated Silentwind PWM charger and the panels have a Victron Smart solar charger 150/30. I am using a JK 300a BMS. A couple weeks ago I was testing all the components to make sure they were acting as they should. So, I turned on the solar and wind chargers, went back to land for a few hours, and when I came back there was one cell that was 4.29v and the rest were around 3.35v. (See the first screen shot below.) Fearing a runaway cell, which will expand horribly if the charging condition is not stopped, I turned off the solar and the wind. After a couple hours all the cells were back down to around 3.35v, including the 4.29v cell. Ran the engine at half throttle for about half an hour the next day and the cells stayed in synch with each other the whole time as they were collectively discharged by running the motor. Then, day before yesterday I tested the charging, again, using solar and wind and, again, after a few hours, this same cell went up to 4.20v and every other cell was around 3.35v. When I turn off the charging the cell, again, goes back down to 3.30v and, gets in balance with other cells as they all settle to .004v of each other after a couple hours. Shouldn't the BMS shut down any cell that goes above 3.65v if that's what the over protection voltage shut-off is set at? I am concerned that the BMS isn't shutting off the charging for the "runaway" cell when it reaches 3.65v, which is the charging high voltage protection shut-off I have set on these cells. I just don't know if its the BMS or the cell itself that is the problem, since I believe any cell can get overcharged if the BMS is not working properly for that cell. Although the BMS is brand new. I am thinking of switching the BMS wire for the runaway cell to another cell and see if the same overcharging condition happens to that cell and see if the original cell, with a different BMS wire now, stays at the same voltage of the other cells or overcharges again. Attached are some screen shots of the cells and the setup through the JK BMS app. Any ideas or suggestions appreciated. You all have provided me over the years with the most thoughtful advice and I thank you for that. If you can't open the zip file of screen shots I can send them individually.

Peter Knowlton

Dartmouth MA

Re: [electricboats] One cell out of whack. Replace it or stay with it.

Quick guess: With the JK BMS, the bypass current is limited to 2amps. If any cell is at the set bypass limit and the collective charging current is blindly dishing out above 2amps, that cell's voltage is going to rise. Given that your solar and wind could easily have been delivering more than 106watts (53v x 2amps), any cells reaching the max cell voltage will experience unwanted current UNLESS your solar and wind controllers throttle back their collective current output to 2amps or less. Your BMS system needs to inform ALL charge sources that might collectively deliver 2amps or more whenever any cell starts bypassing.

From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of Peter Knowlton via groups.io
Sent: Sunday, June 29, 2025 10:24 AM
To: electricboats@groups.io
Subject: [electricboats] One cell out of whack. Replace it or stay with it.

Question for those who have familiarity with the JK BMS's. I have 16 Eve lifepo4 cells for a 48v 280a battery bank. I have 6 - 24v, 220w Newpowa solar panels and a Silentwind 400 for wind generation. The Silentwind has a dedicated Silentwind PWM charger and the panels have a Victron Smart solar charger 150/30. I am using a JK 300a BMS. A couple weeks ago I was testing all the components to make sure they were acting as they should. So, I turned on the solar and wind chargers, went back to land for a few hours, and when I came back there was one cell that was 4.29v and the rest were around 3.35v. (See the first screen shot below.) Fearing a runaway cell, which will expand horribly if the charging condition is not stopped, I turned off the solar and the wind. After a couple hours all the cells were back down to around 3.35v, including the 4.29v cell. Ran the engine at half throttle for about half an hour the next day and the cells stayed in synch with each other the whole time as they were collectively discharged by running the motor. Then, day before yesterday I tested the charging, again, using solar and wind and, again, after a few hours, this same cell went up to 4.20v and every other cell was around 3.35v. When I turn off the charging the cell, again, goes back down to 3.30v and, gets in balance with other cells as they all settle to .004v of each other after a couple hours. Shouldn't the BMS shut down any cell that goes above 3.65v if that's what the over protection voltage shut-off is set at? I am concerned that the BMS isn't shutting off the charging for the "runaway" cell when it reaches 3.65v, which is the charging high voltage protection shut-off I have set on these cells. I just don't know if its the BMS or the cell itself that is the problem, since I believe any cell can get overcharged if the BMS is not working properly for that cell. Although the BMS is brand new. I am thinking of switching the BMS wire for the runaway cell to another cell and see if the same overcharging condition happens to that cell and see if the original cell, with a different BMS wire now, stays at the same voltage of the other cells or overcharges again. Attached are some screen shots of the cells and the setup through the JK BMS app. Any ideas or suggestions appreciated. You all have provided me over the years with the most thoughtful advice and I thank you for that. If you can't open the zip file of screen shots I can send them individually.

Peter Knowlton

Dartmouth MA

[electricboats] One cell out of whack. Replace it or stay with it.

Peter Knowlton

Dartmouth MA

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Re: [electricboats] Electric Motor for 40ft Sailboat

The advantage of the Electric Yacht 20.0 is its redundant tandem motors. It equates to a 36 hp shaft motor. My boat is a 32 footer. It had a Volvo MD33. The 20.0 exceeds its hp by 11 shaft hp. The 20.0 will operate as an Electric Yacht 10.0 up to 180 continuous amps but then if needed, the second motor can jump in and continue up to 360 amps continuous, providing significant extra power in a negative sea state. For up to a 40 footer, this was the recommended motor system by Electric Yacht. It provides significant power at a marginal greater cost and is also capable of redundant operations at half power. As a 48 volt system consider a 420 AH battery bank. My 32' is a 1976 and weighs in at 12500 lbs. I have two 48 volt DC, 10kw Fischer- Panda generators to charge the batteries OR run the boat on a full time basis. Restoration is near completion and installation of the powertrain is upcoming. Good luck to us all!

On Sun, Jun 29, 2025 at 8:11 AM thomas via groups.io <thomas=samoht.ca@groups.io> wrote:

Hi!

Just bought a 1979 Moody 39ft sailboat which is in need of a new engine. She displaces 18,078.00 lb / 8,200 kg.

I've been researching replacements. I see lots of examples of boats 35ft and under, but not as many larger than that. I'm trying to figure out what would be needed motor wise to power her. I'd very much like to stay at 48V both for safety and practical reasons (availability of equipment at 48V).

Looking at the Thunderstruck kit with ME1616, which would be undersized (their page says good to 15K displacement). That said all the reading I've been doing seems to point to it would work, just maybe slightly slower speed for the same kw ouptut of a smaller boat. That said as long as I can sustain 4ish knots I'd be more than happy, and I think that would be within range.

Alternatively, what are my options if I need "larger"? Looking at the ElectricYacht setups they seem to pair two ME1616's together in parallel, so I guess that's one option. Are there others though? Is there a slightly large single motor people use for 15-20kw? (If I think i need that)

(Also, whichever option will be doing water cooled)

Thanks!

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[electricboats] Electric Motor for 40ft Sailboat

Hi!

Just bought a 1979 Moody 39ft sailboat which is in need of a new engine. She displaces 18,078.00 lb / 8,200 kg.

I've been researching replacements. I see lots of examples of boats 35ft and under, but not as many larger than that. I'm trying to figure out what would be needed motor wise to power her. I'd very much like to stay at 48V both for safety and practical reasons (availability of equipment at 48V).

Looking at the Thunderstruck kit with ME1616, which would be undersized (their page says good to 15K displacement). That said all the reading I've been doing seems to point to it would work, just maybe slightly slower speed for the same kw ouptut of a smaller boat. That said as long as I can sustain 4ish knots I'd be more than happy, and I think that would be within range.

Alternatively, what are my options if I need "larger"? Looking at the ElectricYacht setups they seem to pair two ME1616's together in parallel, so I guess that's one option. Are there others though? Is there a slightly large single motor people use for 15-20kw? (If I think i need that)

(Also, whichever option will be doing water cooled)

Thanks!

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Saturday, June 28, 2025

Re: [electricboats] Maximum input voltage for outboard?

Philistines!
Well, you can use all the parts for the solar system on another boat, or a camper or tiny house...

Anton

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Friday, June 27, 2025

Re: [electricboats] Maximum input voltage for outboard?

Very true! I've advertised it in almost all of those places. :)

Another adjustment....

I have decided to sell the electric drive system separately. Thus far the only folks interested wanted to use a gas outboard, so I must adapt. :)

So, the boat, less electric outboard, solar panels and batteries (all other features, and solar panel wiring, remain) now has an asking price of $12,000.

I'll post a few new photos when I get some mounting holes filled and a bit of touch up paint done.

Jim

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Re: [electricboats] Maximum input voltage for outboard?

Also consider that the market for boats is more limited than other things, and it being home built, wood, electric, and a particular design all narrow its audience. If you need it gone fast, well that's tough, but if you have time, and can wait and advertise widely, you may be able to luck into the perfect person who wants exactly what you are selling.

That is to say, have patience, I have bought and sold a number of things on FB CL and used all the various groups to sell the specific things I was selling and was not able to predict which would deliver my ad to the right person.

FB is where a lot of the action is lately, but CL still works well. Search out and join all the wooden boat, home built boat, electric boat gorups on FB you can fins, also the various wooden boat magazines, 48 North, etc. they all have ads.

It's a pain in the neck to manage it all, but you may spend less time on the than dismantling your beautiful boat.

Anton

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Re: [electricboats] Maximum input voltage for outboard?

Berndt's post (in case you haven't seen it): Log in or sign up to view

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See posts, photos and more on Facebook.

Re: [electricboats] Maximum input voltage for outboard?

Hi Jim,

You might try advertising more broadly before you pull that great solar electric system out of your boat. If I was looking for a small cruising boat, I would definitely consider it.

Maybe craigslist?

Facebook groups: Electric boats PNW | Groups | Facebook

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I noticed Bernd's post about your boat got several responses from admirers, but he never mentioned it was for sale.

Best,

Curtis

(solar-electric Windrider 16 tri)

Thursday, June 26, 2025

Re: [electricboats] Maximum input voltage for outboard?

Agree with 48v. Saw datasheet and the 1500rpm is needed to get thrust and minimal speed.

Best regards

Lee Eldridge

0427874796

On 27 Jun 2025, at 03:28, James Jones via groups.io <jgjones252=gmail.com@groups.io> wrote:

Hi,

It's worked great, and seems to have a great prop on it. It really needs, though, to be run at 48 volts, rather than 24. They advertised it as being able to run at 24 or 12, but that's just a proportional decrease in thrust, so not a terribly useful feature.

It looks like I may be removing all the electrics from my boat in order to sell it. No one seems to be interested in it otherwise. So the Karvin (and batteries and panels) may be for sale separately soon.

Jim

Re: [electricboats] Maximum input voltage for outboard?

Hi,

It's worked great, and seems to have a great prop on it. It really needs, though, to be run at 48 volts, rather than 24. They advertised it as being able to run at 24 or 12, but that's just a proportional decrease in thrust, so not a terribly useful feature.

It looks like I may be removing all the electrics from my boat in order to sell it. No one seems to be interested in it otherwise. So the Karvin (and batteries and panels) may be for sale separately soon.

Jim

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Tuesday, June 24, 2025

Re: [electricboats] Maximum input voltage for outboard?

Thanks Jim

On Tue, Jun 24, 2025 at 5:17 PM 63urban via groups.io <63urban=gmail.com@groups.io> wrote:

I tried to get o e about three years ago because it looked good but could get a response on how to get it to canada. How has it behaved for you?

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------
From: "James Jones via groups.io" <jgjones252=gmail.com@groups.io>
Date: 2025-06-24 8:14 p.m. (GMT-05:00)
To: electricboats@groups.io
Subject: Re: [electricboats] Maximum input voltage for outboard?

Hi,

The motor is a Karvin 6800... which is no longer available. Karvin (in the Czech Replublic) appears to be out of business.

Solid, well-made, motor though. :)

Jim

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Re: [electricboats] Maximum input voltage for outboard?

I tried to get o e about three years ago because it looked good but could get a response on how to get it to canada. How has it behaved for you?

Sent from my Bell Samsung device over Canada's largest network.

-------- Original message --------

From: "James Jones via groups.io" <jgjones252=gmail.com@groups.io>

Date: 2025-06-24 8:14 p.m. (GMT-05:00)

To: electricboats@groups.io

Subject: Re: [electricboats] Maximum input voltage for outboard?

Hi,

The motor is a Karvin 6800... which is no longer available. Karvin (in the Czech Replublic) appears to be out of business.

Solid, well-made, motor though. :)

Jim

Re: [electricboats] Maximum input voltage for outboard?

Hi,

The motor is a Karvin 6800... which is no longer available. Karvin (in the Czech Replublic) appears to be out of business.

Solid, well-made, motor though. :)

Jim

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Re: [electricboats] Maximum input voltage for outboard?

I like the "dual or three for that matter....lay out"!

I like the looks of your motor.

I'd love to know the make/model if you can for me.

Bruce Thomas

On Tue, Jun 24, 2025 at 11:00 AM James Jones via groups.io <jgjones252=gmail.com@groups.io> wrote:

A few more photos, and reduced price ($15,500).

Jim

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Re: [electricboats] Maximum input voltage for outboard?

A few more photos, and reduced price ($15,500).

Jim

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Saturday, June 21, 2025

Re: [electricboats] 14’ skiff with electric outboard needs a home

I send you commiserations. Your husband built a beautiful boat. Those engines are powerful units if highest quality so should sell for good prices as the market is still early days. They will also work on sailing boats to a bit above 26' so try posting in Sailer trailer sites. I am in a different country so I cannot make an offer.

Best regards

Lee Eldridge

0427874796

On 22 Jun 2025, at 09:11, Glenn Holland <gholland1@nc.rr.com> wrote:

Hello, How can I respond to this lady? I'm in NC, the Raleigh area. I am a wooden boat builder and am familiar with electric propulsion. Have built several electric rigs for my boats. Would like to get further information and see the boat.

Thanks sincerely,

Glenn Holland

gholland1@nc.rr.com

From: electricboats@groups.io <electricboats@groups.io> on behalf of F. Neil via groups.io <fneilss=gmail.com@groups.io>
Sent: Saturday, June 21, 2025 1:12 PM
To: electricboats@groups.io <electricboats@groups.io>
Subject: [electricboats] 14' skiff with electric outboard needs a home

My husband was a member of this group. He was passionate about electric vehicles and lovingly designed and built a 14' skiff for an electric motor. "Coquina" was completed in 2021. He built a battery pack and tried out 2 different electric outboards, an Elco 9.9 rs and a Europulision navy 6.0. We were able to enjoy it for about a year before he got sick. He passed in 2023. I am looking for a home for Coquina. It has a trailer. Both the trailer and boat have a clear title. I don't know the details about the battery system. I mostly want to find it a good home, price is negotiable. I am enclosing a few pictures. I can provide more for anyone that is interested. Coquina is currently in NC.

thanks, J.Simms

Re: [electricboats] 14’ skiff with electric outboard needs a home

Hello, How can I respond to this lady? I'm in NC, the Raleigh area. I am a wooden boat builder and am familiar with electric propulsion. Have built several electric rigs for my boats. Would like to get further information and see the boat.

Thanks sincerely,

Glenn Holland

gholland1@nc.rr.com

From: electricboats@groups.io <electricboats@groups.io> on behalf of F. Neil via groups.io <fneilss=gmail.com@groups.io>
Sent: Saturday, June 21, 2025 1:12 PM
To: electricboats@groups.io <electricboats@groups.io>
Subject: [electricboats] 14' skiff with electric outboard needs a home

My husband was a member of this group. He was passionate about electric vehicles and lovingly designed and built a 14' skiff for an electric motor. "Coquina" was completed in 2021. He built a battery pack and tried out 2 different electric outboards, an Elco 9.9 rs and a Europulision navy 6.0. We were able to enjoy it for about a year before he got sick. He passed in 2023. I am looking for a home for Coquina. It has a trailer. Both the trailer and boat have a clear title. I don't know the details about the battery system. I mostly want to find it a good home, price is negotiable. I am enclosing a few pictures. I can provide more for anyone that is interested. Coquina is currently in NC.

thanks, J.Simms

[electricboats] 14’ skiff with electric outboard needs a home

My husband was a member of this group. He was passionate about electric vehicles and lovingly designed and built a 14’ skiff for an electric motor. “Coquina” was completed in 2021. He built a battery pack and tried out 2 different electric outboards, an Elco 9.9 rs and a Europulision navy 6.0. We were able to enjoy it for about a year before he got sick. He passed in 2023. I am looking for a home for Coquina. It has a trailer. Both the trailer and boat have a clear title. I don’t know the details about the battery system. I mostly want to find it a good home, price is negotiable. I am enclosing a few pictures. I can provide more for anyone that is interested. Coquina is currently in NC.

thanks, J.Simms