weird idea

[J57ltr]

Industrial motors are the same way and they don't even have heatsinks. They are refered to as TEFC: Totally Enclosed Fan Cooled. The fan used in these applications are not props but it's a basically a disc with vanes running from the center to the outer edge, and a shroud that directs the air through the rear and directs it over the can.

Just because the motor gets hot doesn't mean it's overloaded "hot" is relative. The cooler you keep electronics the longer they last even on motors. If you are cooling the outside of the motor the inside will be cooled as well, because heat moves from hot to cold its one of the laws of thermodynamics.

Jeff