Quote:
Originally Posted by Grant-53
Putting fluid in a motor casing is not an industrial practice. I would suggest mounting metal wheel disks to the sides of the motor as fin area and reducing drag on the wheel assembly. Heat comes from the current in the windings under load.
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A lot on Endless Sphere recommend it for geared motors, because there's virtually no contact between motor and casing. The sides of the motor can be cool to the touch, while the windings are in excess of 100c.
Either that, or drilling holes in the sides and installing fans.
Probably won't matter until after winter though.
EDIT: Some interesting reading on potted motors, ferrofluid and oil cooling:
https://endless-sphere.com/forums/vi...06995#p1106995