I'm going to call this an "educational" brushless motor because last time I checked PLA isn't ferrous (I can haz magnetic domains?), the rotor is using flat magnets (I can haz more flux?), and the rotor should be 1 angstrom away from the stator but... its not.
Here is a video of me only firing one commutation state: http://www.youtube.com/watch?v=nbubtBy1UJg
You can print all these parts without supports.
bearing.SLDPRT | 185.0KB | |
bearing.STL | 58.7KB | |
dc_brushless.SLDASM | 336.5KB | |
magnet.SLDPRT | 100.0KB | |
magnet.STL | 12.0KB | |
rotor.SLDPRT | 274.0KB | |
rotor.STL | 24.7KB | |
shaft.SLDPRT | 173.0KB | |
shaft.STL | 19.6KB | |
Stator.SLDPRT | 457.0KB | |
Stator.STL | 329.6KB | |
stator_bottom.SLDPRT | 293.0KB | |
stator_bottom.STL | 135.8KB | |
stator_top.SLDPRT | 291.0KB | |
stator_top.STL | 136.2KB |