Water-cooled motors

[mole55]

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.

[typhoon_driver]

More hassle than it's worth. I wouldn't bother.

[maddox10]

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.

[overkill]

Why stop at dry ice? Liquid nitrogen FTW

[maddox10]

With liquid nitrogen the chambers need to be "watertight" and needing a pressure operated blow off valve.

Not counting the pricetag and handling issues.

[overkill]

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.

[typhoon_driver]

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?