Castle Neu Heatsink?

[Thomas]

Aluminium is a very good heat conductor. If the fins are rather short and thick than very long and thin (like on a CPU cooler), adding the heatsink will help with cooling.

I would use whatever is lighter and lower CG. BTW, a hot motor dissipates heat better. If it doesn't get damaged, why run it cooler.

[MetalMan]

Originally Posted by Thomas

I would use whatever is lighter and lower CG. BTW, a hot motor dissipates heat better. If it doesn't get damaged, why run it cooler.

Heat dissipation will always be better when the temperature difference (delta T) between the hot object and ambient is larger. BUT, a cooler motor will be more efficient because the cooler the copper is, the less resistance it has.