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General Discussions / Air Cooled vs Watercooled BLDC Motor
« Last post by Karottop on March 09, 2024, 01:05:54 AM »Hi There,
I'm new to the forum. I've been working on overhauling an old Ray Electric Outboard lower unit with an air-cooled BLDC motor. The controller came from the factory with a battery current draw limit of 85 amps for some reason. I only know that because I finally got the cable and was able to read the parameters off the controller.
Under those conditions, I ran the motor at 85 amps without any issues for about 30-45 minutes on the lake. I've installed two 150 CFM fans on the outboard cover to help cool the equipment.
Now that I have the cable, I've set the limit to 185 amps. I expect I'll be able to scoot along much faster and maybe even get on plane at that new current level which has been my goal all long. My question is cooling. I expect I won't need to run the outboard at that amp draw for more than about 30ish minutes at any given time. With the cooling fans on, do you expect I'll need to stop to let the motor/controller cool off within that 30-minute period? The rep at Golden Motor said I could get away with the air-cooled version, but I'm curious to hear your perspective
I'm new to the forum. I've been working on overhauling an old Ray Electric Outboard lower unit with an air-cooled BLDC motor. The controller came from the factory with a battery current draw limit of 85 amps for some reason. I only know that because I finally got the cable and was able to read the parameters off the controller.
Under those conditions, I ran the motor at 85 amps without any issues for about 30-45 minutes on the lake. I've installed two 150 CFM fans on the outboard cover to help cool the equipment.
Now that I have the cable, I've set the limit to 185 amps. I expect I'll be able to scoot along much faster and maybe even get on plane at that new current level which has been my goal all long. My question is cooling. I expect I won't need to run the outboard at that amp draw for more than about 30ish minutes at any given time. With the cooling fans on, do you expect I'll need to stop to let the motor/controller cool off within that 30-minute period? The rep at Golden Motor said I could get away with the air-cooled version, but I'm curious to hear your perspective