T-Pain Is On A Boat: 2024

Tuesday, May 14, 2024

Re: [electricboats] ThunderStruck 10kw kit overheating?

Sorry Brian. I stand corrected. Don't understand how I misssed such an obvious mistake

On Tue, May 14, 2024 at 7:23 AM Brian via groups.io <mainfuse=gmail.com@groups.io> wrote:

Hi Lucy, all our sailboat kits come with a display that shows temp, rpm , current draw and voltage. Hope we don't go to jail over this.
Brian Hall

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Re: [electricboats] ThunderStruck 10kw kit overheating?

Hi Brian,

From an old and a,

Almost completely satisfied customer. We have Several years now on our AC 34 kit on one side in our 1990 Catana 42 Catamaran "Toolbox". System still works great and does all we need but I would still like to be able to have a display to show voltage, amperage, and RPM at the same time at the helm. Anything new?

Cheers,

Ric Sanders

On Tue, May 14, 2024 at 7:23 AM Brian via groups.io <mainfuse=gmail.com@groups.io> wrote:

Hi Lucy, all our sailboat kits come with a display that shows temp, rpm , current draw and voltage. Hope we don't go to jail over this.
Brian Hall

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Re: [electricboats] ThunderStruck 10kw kit overheating?

Hi Lucy, all our sailboat kits come with a display that shows temp, rpm , current draw and voltage. Hope we don't go to jail over this.

Brian Hall

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Monday, May 13, 2024

Re: [electricboats] Need smart people help

On Mon, May 13, 2024 at 06:43 PM, RobertRod wrote:

I also just realized that i will need to series the battery packs for 48v 400ah Lifepo4 with one 200amp 16 BMS.

I think you mean parallel (not series).

If you just have the one large 48V battery, any number of those chargers could be used to charge it,
depending on tradeoffs how much other load you want the generator to supply and how much battery
discharge you want to keep up with (or how fast you want to recover battery SOC).

IOW, my suggestion to use four chargers was before I heard about the four 100Ah batteries being paralleled.
Once in parallel, less than four chargers could also work.

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Re: [electricboats] Need smart people help

Thank you Bobkart for the suggestion. I like the idea of using two, gives the system redundancy. I also found the Lester Summit II 1425w inverter. Anybody used these with success?

I also just realized that i will need to series the battery packs for 48v 400ah Lifepo4 with one 200amp 16 BMS.

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Re: [electricboats] Need smart people help

I use a pair of Meanwell HLG-600H-54A chargers for my 10kWh pack (16S LFP).
It tops out at just over 58V, but that's fine. They draw ~700W each, so four of
those would just use up the 3kW your generator provides (with headroom).

https://www.meanwell.com/Upload/PDF/HLG-600H/HLG-600H-SPEC.PDF

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Re: [electricboats] ThunderStruck 10kw kit overheating?

Your motor and controller both have temperature sensors along with a lot of other essential metrics made available over CANbus. The fact that the base thunderstruck kit doesn't come with a way to see any of this is criminal. Get the CAN to bluetooth translator or a display you can mount at your helm. Installing some sort of cooling won't help like you want if you don't know what the operating temp is.

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Friday, May 10, 2024

Re: [electricboats] EVE Lithium

Thanks Dan.

What you have looks like the same package/size that I am considering. EVE seems to market two versions of that cell with different ratings. Either would do. So I'm just working within my requirements where I want a lot of amp-hours at very moderate currents.

I like the fasteners on those with the stud instead of internal threads. Packaging and stabilizing the cells is certainly necessary for many reasons.

John

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Re: [electricboats] EVE Lithium

I built my traction battery from 280AH Eve cells. I have three seasons on it now. No issues. Mine have a 1.0C rate for charge and discharge. I left it at 52.56V in the fall and it is currently at 52.52V. No charging or anything over winter. I do wish the terminals were beefier on the cells but I have not had an issue with that. I was careful to clamp them all very firmly to eliminate movement that could stress the terminals.

*Sometimes the charge and discharge rates are different.

A C rate of .5C discharge would not work for me unless the battery capacity was on the order of 500AH. But you're not likely to be able to charge faster than that regardless. I'd be hard pressed to get charging at 60 amps on my 3600 W max shore power hookup (or any typical 120V 30A hookup). And that's .2C.

If I had 5000W of charging at 220V input I would be putting about 100amps into the battery. That's .36C for my 280AH battery. And 5000 watts is an amount of charging that's not available at typical shore power hookups. I suppose you could double though. Even 3000 watts is out of reach in any practical way for me. And I just don't need that anyway for my current use.

That's based on my TSM 1500 charger... There are more powerful options out there (Victron has some really nice stuff) but the limits are on the input power from the shore hookup.

Info on my battery here:
http://dan.pfeiffer.net/10m/electric_drive_battery.htm

Dan Pfeiffer

On 2024-05-10 10:25 am, johnacord wrote:

Anyone have used EVE Lithium?

I would be using them for a 22 ft sail boat and would not need high discharge/charge rates, and not frequent cycling. EVE has some cells rated at .5C which is fine for my application, and those look good to me.

Any comments?

Thanks.
John

[electricboats] EVE Lithium

Anyone have used EVE Lithium?

I would be using them for a 22 ft sail boat and would not need high discharge/charge rates, and not frequent cycling. EVE has some cells rated at .5C which is fine for my application, and those look good to me.

Any comments?

Thanks.
John

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Monday, May 6, 2024

Re: [electricboats] ThunderStruck 10kw kit overheating?

Makes sense, thanks!

On May 6, 2024, at 18:49, James Sizemore via groups.io <james=deny.org@groups.io> wrote:

I have a shroud, so easy install for me.

On May 6, 2024, at 9:47 PM, Dan Pfeiffer <dan@pfeiffer.net> wrote:

I like those fans. How is the fan placed on the motor? Do you have some sort of shroud to direct air over the motor?

Ryan, My Sevcon controller has an output programmed to go +12V for cooling when the temp goes above 125C (I think). If you have that you can use it to control a relay to operate the fan. It is something that would have been programmed by Thunderstruck.

Dan Pfeiffer

On 2024-05-06 8:32 pm, James Sizemore wrote:

If you do go with a fan, I have found that automotive radiator fans work well, the are waterproof and quite, and last forever, computer fans die quickly on a boat, so avoid those.

I have had zero heating issues after installing mine:

https://www.amazon.com/gp/product/B00H29LYTI/

On May 6, 2024, at 9:14 PM, Ryan Sweet <ryan@ryansweet.org> wrote:

No, I've got that wrong. Thanks. I definitely don't have the liquid cooled version.

On May 5, 2024, at 11:30, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Re: [electricboats] ThunderStruck 10kw kit overheating?

I have a shroud, so easy install for me.

On May 6, 2024, at 9:47 PM, Dan Pfeiffer <dan@pfeiffer.net> wrote:

I like those fans. How is the fan placed on the motor? Do you have some sort of shroud to direct air over the motor?

Ryan, My Sevcon controller has an output programmed to go +12V for cooling when the temp goes above 125C (I think). If you have that you can use it to control a relay to operate the fan. It is something that would have been programmed by Thunderstruck.

Dan Pfeiffer

On 2024-05-06 8:32 pm, James Sizemore wrote:

If you do go with a fan, I have found that automotive radiator fans work well, the are waterproof and quite, and last forever, computer fans die quickly on a boat, so avoid those.

I have had zero heating issues after installing mine:

https://www.amazon.com/gp/product/B00H29LYTI/

On May 6, 2024, at 9:14 PM, Ryan Sweet <ryan@ryansweet.org> wrote:

No, I've got that wrong. Thanks. I definitely don't have the liquid cooled version.

On May 5, 2024, at 11:30, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Re: [electricboats] ThunderStruck 10kw kit overheating?

I like those fans. How is the fan placed on the motor? Do you have some sort of shroud to direct air over the motor?

Ryan, My Sevcon controller has an output programmed to go +12V for cooling when the temp goes above 125C (I think). If you have that you can use it to control a relay to operate the fan. It is something that would have been programmed by Thunderstruck.

Dan Pfeiffer

On 2024-05-06 8:32 pm, James Sizemore wrote:

If you do go with a fan, I have found that automotive radiator fans work well, the are waterproof and quite, and last forever, computer fans die quickly on a boat, so avoid those.

I have had zero heating issues after installing mine:

https://www.amazon.com/gp/product/B00H29LYTI/

On May 6, 2024, at 9:14 PM, Ryan Sweet <ryan@ryansweet.org> wrote:

No, I've got that wrong. Thanks. I definitely don't have the liquid cooled version.

On May 5, 2024, at 11:30, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Re: [electricboats] ThunderStruck 10kw kit overheating?

If you do go with a fan, I have found that automotive radiator fans work well, the are waterproof and quite, and last forever, computer fans die quickly on a boat, so avoid those.

I have had zero heating issues after installing mine:

https://www.amazon.com/gp/product/B00H29LYTI/

On May 6, 2024, at 9:14 PM, Ryan Sweet <ryan@ryansweet.org> wrote:

No, I've got that wrong. Thanks. I definitely don't have the liquid cooled version.

On May 5, 2024, at 11:30, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Re: [electricboats] ThunderStruck 10kw kit overheating?

No, I've got that wrong. Thanks. I definitely don't have the liquid cooled version.

On May 5, 2024, at 11:30, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Sunday, May 5, 2024

Re: [electricboats] ThunderStruck 10kw kit overheating?

I have heard / read accounts of people, with over heating boats and electric motors, who put in a fan in and liked the results. Don't know if I'll need to do that too, after installing an F6-A Curtis controller with an AC-34 motor at 48v and a 28000 lb sailboat.

Thunderstruck did recommended an additional heat sink with the aluminum fins, which they had. About $85. So, I'll start there. Higher cost but no moving parts.

Sent via phone and big thumbs

On May 5, 2024, at 2:30 PM, Kev via groups.io <captainyoung=gmail.com@groups.io> wrote:

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

Re: [electricboats] ThunderStruck 10kw kit overheating?

Check your prop for an impairment.

On Sun, May 5, 2024, 1:16 PM Dan Pfeiffer via groups.io <dan=pfeiffer.net@groups.io> wrote:

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

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Re: [electricboats] ThunderStruck 10kw kit overheating?

The Thunderstruck 10KW kit uses the ME1115. Are you sure you have an ME1616? The ME1616 is liquid cooled with fittings for the coolant on the side. The housing is sealed. The 1115 has cooling slots all around the housing. The ME1616 is the motor in the 12kW liquid cooled kit.

ME1616
http://www.motenergy.com/mepmwaco.html

ME1115 (which may now be designated a ME1917?)
http://www.motenergy.com/me1115motor.html

The 10kW ME1115 is actually good for 6kW continuous which would likely be about what you are running at 3/4 power with a 12,000 lb boat? If you want to run at higher power levels you NEED to have cooling. That's why I went with the 12kW liquid cooled kit and added a liquid cooling block to the controller.
http://dan.pfeiffer.net/10m/electric_drive_cooling.htm
My boat (Pearson 10M) is about the same weight. 12500.

The Thunderstruck Can Translator kit is a plug-in setup that will give you data on a device via bluetooth. Well worth having.
https://www.thunderstruck-ev.com/can-translator.html
My motor heats up faster than the controller according to the data from my instrumentation. But both need cooling for higher output operation.

Add cooling!

Dan Pfeiffer

On 2024-05-05 11:36 am, Ryan Sweet wrote:

I have a 30’ Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It’s a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4” fan inside one.

[electricboats] ThunderStruck 10kw kit overheating?

I have a 30' Rawson ketch, 12,000lbs, with the ThunderStruck 10kW kit about four years old. Me1616 I think and the sevcon gen4. I have 1000ah of battery at 48v. I have operated her regularly without much issue for about four years.

The sevcon unit has heat sinks on the back. I have a 600a breaker in the circuit. There is no other cooling.

Yesterday I had a problem when running at 3/4 throttle for 40 minutes or so against a tidal current - the motor whined a couple of times and cut out - I shut off the throttle and waited for 20 min and then started again at 1/4 throttle. Luckily the sailing was enough to keep me making forward progress against the current, though barely. I assume that it was overheating - I have not seen that before but I rarely push it at that rate for that long.

My question is: which component was most likely too hot - the motor or the sevcon? What strategies have worked for others for improving the cooling? Would a 12v fan or two in the engine compartment help?
It's a big compartment - used to have a 40hp diesel and even then had plenty of room. There are a couple of scoops for fresh air and I could fit a 3-4" fan inside one.

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Friday, May 3, 2024

[electricboats] Need smart people help

Hi folks,

I am converting a Catalina 34 with a thunderstruck 12kw 48v kit.
Currently have
4 x 48v 100ah batteries 20kw.
3kw inverter generator 30amp 110v

Looking for the simplest way of charging these 4 individual batteries. Each will have a bms and anderson connectors.
I will be using a distribution bus bar.
I know some are using mppt chargers. But would it be best to use a multiplus or any other device. I am looking to have the least amount of fail points in the system.

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Thursday, May 2, 2024

Re: [electricboats] Connectors question for electric outboard

Ric,
Mine is bigger than the prototype at 4 meters. I also beefed up the gunwhales a bit to handle the scrum at the dinghy dock. Designer is an Aussie, Craig Clos. He has several videos on YouTube https://m.youtube.com/watch?v=SA6cDk2Imb0&t=3s&pp=ygUTbWFnaWMgY2FycGV0IGRpbmdoeQ%3D%3D
He made the plans for me and was very helpful. I lost contact with him shortly after he launched the 8 meter powercat (full interior, trialed at 22 kts on 2x30 hp Honda with 4 peeps). He had some health problems so I fear the worst. I'll keep trying to track him down. Last address he used was apc.tender@gmail.com
For my boat next step is final structural taping and float in water to figure out weight and balance so I know where to put seats. I've given up on electric motors for now. I'll wait for better stuff. Gonna start with gas Yamaha 8.
Jerry

On May 2, 2024, at 2:04 PM, Ric Sanders <rsandersemail@gmail.com> wrote:

Jerry,

Any chance you have a line drawing, plans, sketches, or outline of the dinghy you are making?

Cheers,

Ric Sanders

On Fri, Apr 19, 2024 at 7:20 AM shredderf16 via groups.io <Shredderf16=sbcglobal.net@groups.io> wrote:

John,
   I'm building a 12 foot cat dinghy out of foam and glass. About 120 lbs. I also have the Hang Kai 1.2. Hopefully will have the boat running by end of summer.
   I'm probably going to go with a small server rack lifepo4 that weighs about 40 lbs so I can carry it home to charge. The prices are getting better so waiting until end to buy it.
    The 10 foot version of my dinghy would plane at 14 knots with one guy on a 3 hp gas honda. So I asked my Aussie propeller expert to look at the Hang Kai. He thinks we'll get at least 10 knots. So I'll give it a shot. If it looks promising I might get another and gang them together. Would also be good for redundancy.
    We discussed the prop. The motor is geared one to one, so the prop is spinning at 3000 rpm or so. That's why it's small. Depending on how things go I've got an idea of an adapter to gear it down and fit a bigger prop.
    Keep posting. I'll let you know how it goes when we get the thing in the water.
Jerry Barth

On April 18, 2024, at 10:03 PM, "john via groups.io" <oak_box=yahoo.com@groups.io> wrote:

Revisiting this question:

I'm using an electric motor and battery for my dinghy.
I've used Anderson connectors (100A and 50A) - and they're fine electrically.
But the 50A blue Anderson connectors corrode horribly in the salt environment.

I've seen XT60 and XT90 connectors, and think I've heard of people using those for solar connections (as well as being used in RC stuff).

Would XT60 connectors do better in a salt environment than Anderson connectors?

John

On Friday, June 2, 2023 at 08:00:35 AM CDT, Matt Foley <matt@sunlightconversions.com> wrote:

Hi John,

I use 50 amp andersons on my dinghy motor. They do take a beating. I have to clean them every few months. Keep in mind, I get them wet frequently and they have taken more than a few dips in salt water. Salt water corrodes them pretty quick. Ill eventually try another solution.

I can't speak for the Hankai specifically, but 800 watt input power should be enough for 4mph with a little margin. Power needed to go faster then 4mph will go up exponentially.

Matt Foley
Sunlight Conversions
Perpetual Energy, LLC
201-914-0466
sunlightconversions.com
instagram.com/sunlightconversions/
youtube/sunlightconversions

ABYC Certified Marine
Electrical Technician

On Friday, June 2, 2023 at 08:36:47 AM EDT, john via groups.io <oak_box=yahoo.com@groups.io> wrote:

I'm planning to use an electric outboard on the West Marine RIB 310 for my trawler. The dinghy is about 10' long, weighs a little over 100 pounds empty, plus 2-3 "solid sized" adults, plus motor and battery. Current plan is to experiment with a 48V Hangkai electric outboard, powered by a BTR 48V Ebike battery.

Question: What connectors are best for using in the marine environment?

I have experience with Torqeedos, and they use Anderson Plugs. Is that the best option for being able to quickly plug between the battery and the motor?

One thing I want to do is put a small box between the battery and motor. The box will include a battery switch on the positive leg and a Victron battery monitor on the negative leg. While the Torqeedo used Anderson type connectors, I believe 120A type - I'll probably go with 50A Anderson connectors for the Hangkai. This is because both the batteries and the motor use small guage leads - 12GA at most. This is challenging enough to crimp into the pins of the 50A connector (intended for 8ga wire). I have a crimper that I use for most of the large pins and terminal lugs, but have to resort to using a bench vice to crimp the connectors on the small motor and battery leads. I'm planning to use 8 ga wire for the longer runs. The motor is rated at 1000W. I'm assuming I shouldn't be running much over 20A peak, probably more like 800W for typical cruising.

The Hangkai is tiny compared to the Torqeedo 2T. But I'm really curious to see how the Hangkai does, and am REALLY hopeful that it works out. At $350, it's less than 1/10th the cost of a Torqeedo. The Ebike 48V batteries seem to be much better priced and much more available than 24V lithium batteries. My hope is that a 50A Ebike battery will get me at least 2 hours of run time at around 800W on the Hangkai - and I'm REALLY hopeful that 800W will be enough to push the dinghy at least to 3-4mph.

I'm looking forward to being able to put some data together to compare the Torqeedo to the Hangkai. I understand that the Hangkai has less than half the power of the Torqeedo (and the prop on the Hangkai also seems tiny compared to the Torqeedo prop) - but if it can honestly put out what it claims to do, I think that'll be sufficient for a small dinghy. Given my battery bank, 800W would be a good burn rate. I know it'll never get me on plane or win any races. But if it gets me from the boat to the beach, and lets me toodle around a little from time to time, that'll be just fine.

John

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Re: [electricboats] 1964 Cheoy Lee Bermuda 30 for sale

Hi Eric, Good looking boat.

I'm available whenever you are.

310.702.1166

Dennis

On Thu, May 2, 2024 at 9:49 AM, Eric via groups.io
<ewdysar=yahoo.com@groups.io> wrote:

A few pics of the boat and motor...

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Re: [electricboats] 1964 Cheoy Lee Bermuda 30 for sale

A few pics of the boat and motor...

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Wednesday, May 1, 2024

Re: [electricboats] 1964 Cheoy Lee Bermuda 30 for sale

Sounds like an amazing deal. I wish there was a way to stretch it another 17'. I'd snag it pretty quickly. lol

On 5/1/2024 11:30 AM, Eric via groups.io wrote:

I recently moved far away and my life has gone in other directions, it looks like it's time for me to let go. I converted my CL Bermuda 30 ketch to full electric in 2009. That conversion and many performance logs were posted here in this group over the years (search on my profile name for my posts).

Serenity is in the water in Marina del Rey in Southern California. I'm selling her for almost nothing in hopes that a true enthusiast can care for her and enjoy her as much as I have.

Serenity is a 1964 Cheoy Lee Bermuda 30 ketch, with a 5.5kw Propulsion Marine drive and 8kwh LiFePO4 batteries. The motor is a ME0913 motor, which was sold by many vendors as a 10kw motor. Sevcon Gen4 controller. Gear reduction is done with a Browning gear box, over 97% efficient and 50,000 hrs mtbf. PYI dripless shaft seal. 4 blade prop. The electric drive works flawlessly and highly efficient.

Asking $2500. I am 1000 miles from the boat but can arrange for a quick viewing through a local friend.

Contact me directly - ewdysaratyahoodotcom.

Fair winds,

Eric

1964 Cheoy Lee Bemuda 30 ketch, 5.5kw Propulsion Marine drive, 8kwh LiFePO4 batteries

Marina del Rey, CA

Re: [electricboats] 1964 Cheoy Lee Bermuda 30 for sale

It has been a long great run, Eric!

Yours has been one of the longest running voices on these electric boat forums and you will be missed here.

Many times you have given great advice to new folks and shared your experiences.

The electric sailing community has you to thank for pioneering in this.

Fair winds to you!

-Myles Twete, Portland, Or.

www.evalbum.com/348

From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of Eric via groups.io
Sent: Wednesday, May 1, 2024 11:30 AM
To: electricboats@groups.io
Subject: [electricboats] 1964 Cheoy Lee Bermuda 30 for sale

I recently moved far away and my life has gone in other directions, it looks like it's time for me to let go. I converted my CL Bermuda 30 ketch to full electric in 2009. That conversion and many performance logs were posted here in this group over the years (search on my profile name for my posts).

Serenity is in the water in Marina del Rey in Southern California. I'm selling her for almost nothing in hopes that a true enthusiast can care for her and enjoy her as much as I have.

Serenity is a 1964 Cheoy Lee Bermuda 30 ketch, with a 5.5kw Propulsion Marine drive and 8kwh LiFePO4 batteries. The motor is a ME0913 motor, which was sold by many vendors as a 10kw motor. Sevcon Gen4 controller. Gear reduction is done with a Browning gear box, over 97% efficient and 50,000 hrs mtbf. PYI dripless shaft seal. 4 blade prop. The electric drive works flawlessly and highly efficient.

Asking $2500. I am 1000 miles from the boat but can arrange for a quick viewing through a local friend.

Contact me directly - ewdysaratyahoodotcom.

Fair winds,

Eric

1964 Cheoy Lee Bemuda 30 ketch, 5.5kw Propulsion Marine drive, 8kwh LiFePO4 batteries

Marina del Rey, CA

[electricboats] 1964 Cheoy Lee Bermuda 30 for sale

Fair winds,

Eric

1964 Cheoy Lee Bemuda 30 ketch, 5.5kw Propulsion Marine drive, 8kwh LiFePO4 batteries

Marina del Rey, CA

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Tuesday, April 23, 2024

Re: [electricboats] Electric Drive Update - end of season inspection

I know this is an old thread, but any update. Looking to electrify my Valiant 40....

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Sunday, April 21, 2024

[electricboats] Diy high output genset for home built cat

Hello everyone,

Just brainstorming a bit here trying to figure if I can come up with my own hybrid drive for an 8ton displacement Cat. Starting with a marinized VW TDI motor that puts out quite a bit of torque and HP, and using that to power an EMRAX electric AC PM motor, configured as a generator. Then get a proper controller for the EMRAX that can throw a bunch of DC at a pair of the 12kw Thunderstruck kits, one in each hull. I would also use the normal car alternator to power the boats systems while underway. I will have small LTO battery bank that can also run the Thunderstrucks for short distances when I am closer to shore, etc. When living on the hook the smallish Solar and LTO batteries can be configured to run as a 12v or 24v system to run the boats systems.

I like the idea of using VW diesel because they are fairly available and I think the parts are out there to convert one for marine use. There are no shortage of mechanics that can work on one, worldwide. The TDI can be set to run at its max HP/Torque for the EMRAX's best performance. It is good to run these engines at a steady RPM.

This will be a fairly expensive setup in time, $$ and complexity but I think it should just work once setup. I like the Thunderstruck kits as the final drive. Those kits seem pretty good. The LTO batteries are fast charging, safe and are good for 10000 cycles without losing capacity, have a 30yr shelf life, aren't subject to temperature limits like some batteries.

The main issue I think is sizing the EMRAX motor, getting all the various cooling systems layed out and defined, and marinizing that VW engine...

Anything else?

Thanks

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Re: [electricboats] Electric Outboards and trolling motors on a 10' RIB

I used a similar trolling motor on a 17" Seaward Fox with a 12V deep cycle battery for Wednesday beer can races. We would leave the dock and raise the sails and the reverse when finished. Maybe 15 minutes of use. Recharged with a flexible solar panel all week. When the wind speed was higher we used a second trolling motor and battery. The lake didn't have any current. The most difficult part was lifting the battery out of the cabin and placing it in the stern by the motor. I don't have any data about speed, but reliability and maintenance were awesome.

Thanks for the data. I'm looking to do something similar with a WM RB350, but have concerns with wind and current otrside of a protected lake.

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Saturday, April 20, 2024

[electricboats] Electric Outboards and trolling motors on a 10' RIB

Below is the data that I've recently collected, comparing several different "electric outboard" and trolling motor options.

The boat for all tests was a West Marine 10' RIB 310, single fiberglass bottom.

Speeds were monitored using Navionics, and averaged for both up and down wind, in a relatively protected marina environment. Battery data was collected using a Victron 150A SmartShunt.

MOTOR SUMMARY:

Motor Voltage Max Speed Max Power
Torqeedo 2T 24V 4.8Kn 1200W** (Motor testing limited at 1200W due to battery limits)

About $4000, rated at 2400W

Hangkai 48V 3.8Kn 1000W About $330, Rated 1000W - VERY Noisy

Minn-Kota 35# 12V 2.3Kn 410W

Newport 55# 12V 3Kn 550W About $200, Rated 50A@12V

Summary thoughts:

For speed and power, the Torqueedo 2T was clearly on top. Unfortunately, the 24V Torqeedo is about $4000+. Finding 24V batteries that fit in a standard battery box is a bit of a challenge, but do-able. Currently, they are running about $300 for a 60Ah battery. Torqeedo offers other smaller motors with integrated batteries - but they are still have about a $2000-3000 price tag, and spare batteries are VERY expensive.

The Hangkai is a VERY cost effective answer for a 48V outboard electrict motor. However, this motor has a VERY touchy throttle, is extremely noisy, and didn't perform significantly better than the 55# Newport trolling motor.

While the Newport 55# won't get you anywhere fast - it does seem to do a decent job, and should be sufficient for getting the dinghy from boat to shore (as long as there isn't a strong/fast current). 12V lithium batteries are easy to obtain, and a very common voltage to work with. Overall bang for the buck in terms of a nicely performing, low cost motor with an easy to purchase / replace battery seems to be the Newport. Just don't be in a hurry.

Note that while the Torqeedo 2T was the fastest option - running at 1200W will kill a 60Ah 24V battery in about an hour. I would want to have at least two batteries minimum.

The Newport 55# trolling motor should run in excess of 2 hours on a single 150Ah 12V battery. A second, smaller, lighter, less expensive 100Ah battery can be brought along as backup for plenty of range.

Tuesday, May 14, 2024

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MOTOR SUMMARY:

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