Pic of 1409 Aveox. Check the rotor out.

[lutach]

Kept the magnet from exploding into pieces. I have old Aveox just like that one as well as newer motors that had Kevlar wrapped rotors. A couple of the expensive motors used a very high quality and thin stator material and if you guys have a chance to buy one, go ahead.

Edit: Not 100% sure, but I think the new Lehner rotors have that aluminum cap as well.