Making a hallbach array rotor?

Joined
Apr 25, 2014
Messages
2,782
Location
Sausalito
Who has done it? What is it and how did u make it?

There’s very little info on how to make them as well as what magnet configurations are mechanically possible to build or what is ideal. All I see are this guy’s:

https://m.youtube.com/watch?v=LTx1jkjxX6s

But the lip holding the magnets is so large and so much of the magnet face is wasted. And he only does it with one sideways magnet going 90 degrees


And there’s the guy who did a version with his3d printed motor but with gaps between magnets and seems he had no trouble assembling
 
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