Re: [electricboats] Electric Motor for 40' Sailboat

I installed a 10kW Thunderstruck kit on my Sabre 28 this winter (replacing a 50-yr-old Atomic 4). It was easy to install, is air-cooled, and it is working great. I ran the motor for hours yesterday in low winds, no issues with overheating. As others here have mentioned, the Thunderstruck team was very helpful, the kit was very well made, and was the most affordable option. I have 640W of solar and 10kWh of batteries, using Victron for battery monitoring, solar control, and remote access. Happy to share more details.

Cheers,

Peter  

On Wed, Jun 4, 2025 at 10:03 AM gsxbearman via groups.io <gsxbearman=yahoo.com@groups.io> wrote:

The QT are BLDC not PMAC, so wouldn't that make them quite a bit louder?

 

            The one I recommended from electric yacht is a PMAC.

 

 

What about the QT LC is better than the Thunderstruck with your addition of EZkontrol?

 

            Only the ease of installation and no headaches of trying to figure out how to hook all the wires up and make it work.

 

Any thoughts on QT LC 15 vs the 20 which isn't LC (I think)? They're about the same cost...

 

                The Liquid cooling is a must on a boat if you need high power for any length of time. I don't see a continuous kW rating on the QC 20. The QC 10 is rated at 8 kW continuous and it looks like the same motor that the QC 20 uses two of. So I think its safe to assume that the QC 20 would have a continuous rating of 16kW and the QC LC 15 has a continuous rating of 15kW. So unless you have some really good ventilation in your engine room, I would go liquid cooled.

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