Turbine Fan for BL Motors

[Dafni]

Indeed :L: This is no easy project.
Was just an idea, though. But I guess this would be even something that would sell.
I've never been happy with fans on motors, just blowing on one side.

Look, a bell covering the whole motor, with a fan that is somehow attached to the rear end of the shaft... ah, I can see it clear in my head.

How do those fans on the Pletts work? Do they blow over an inner can, or do they even blow thru the gap between the windings and the magnet?