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Old Mar 10, 2004, 02:23 AM
Registered User
Rome Da Vinci, Italy
Joined Aug 2003
355 Posts
How many magnets for a cdrom motor?

Hello! I have found a stator of 25 mm and a bell of 28 mm and 10mm height. 12 5x5x1 magnets leave some space from each other, do you think is better to fill this space? may I add more than 12 magnets? how many? I have only 12 10x1x2 mm magnets, are they better than 12 5x5x1 magnets (they leave more empty space on the bell ring than the small one )? With a 0.375 mm wire , how many windings in delta and 2s lipo for turn smaller props you suggest for starting? Thanx in advance
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Old Mar 10, 2004, 09:21 AM
Look what I did:D
plumb's Avatar
Joined Mar 2003
928 Posts

this is what i was told

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Old Mar 10, 2004, 10:49 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
11,215 Posts
For a 9 pole stator use 12 magnets. Magnet circumference coverage should be between 65% and 80%.

Met vriendelijke groet Ron van Sommeren
diy brushless e-motor homebuilders discussion.
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