View Full Version : What kind of magnet in BP21 motor?
01-17-2007, 01:47 AM
What are the magnets made of in a BP21 cdrom type motor, andhow are they comparedthe a rare earth agnet?
01-20-2007, 02:26 PM
only 4 days and not a post....man this forum needs to hop it up! :D
01-20-2007, 02:54 PM
well... we might have a good answer if we flew computers....
I have no clue..
02-06-2007, 07:09 PM
I think they are neodyme magnets.
This is my BM2408-21 (similar to BP21):
02-06-2007, 09:54 PM
Geez all I know is they make pretty good power for a cheap motor. Look lie Neo's to me, maybe Cheapodyminium? :)
02-13-2007, 07:31 PM
Most magnets in rewound/cdrom-style motors nowadays are neodymium. Usually anywhere from N40-N50. I don't know of any rebuilds that use cobalt.
Ghost, where's Gimp? Haven't heard him lately.
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