Does anyone have any experience with water-cooled motors, and how would you do the radiators? I have some ideas, but I want to see if anyone has any past experiences with them.
More hassle than it's worth. I wouldn't bother.
Watercooled electric motors for this weightclass are normaly motors used in boats, and are actualy overvolted, or hot wound motors with a waterjacket that gets cold water from a scoop and exhausts the hot water at the back.
To use these motors in a feather, you'll need to add a small pump (can't rely on thermosyphon) and a not so small radiator.
Easier to use such motor and dump some dry ice around it. Then you just need a kind of chamber around the motors.
Why stop at dry ice? Liquid nitrogen FTW
With liquid nitrogen the chambers need to be "watertight" and needing a pressure operated blow off valve.
Not counting the pricetag and handling issues.
You know I wasn't serious, right? Personally, I would go with heatpipes for extreme cooling, they would be lighter and smaller than water cooling.
For featherweights, there are already dozens of well proven non watercooled motors that provide more power than they can handle. I see little reason to even consider it as an option unless there's something I'm missing?
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