hard drive motor

[ShaneWard]

Does anyone have any images of what it looks like inside a hard drive motor? They are normally sealed. Has anyone cracked one open and looked inside. Would be interested to know.

Shane

[omi786]

see this one

Attachments

[ShaneWard]

Umm, thats somewhat simple and fragile at the same time.

Thanks for the image. Do different brands have different design on motors? or are they relatively the same.

If anyone has different pics, feel free to post...

Shane

[fzabkar]

Here is another one:
https://rudy68.files.wordpress.com/2009 ... -small.jpg

I like this series of articles explaining how to build your own motor:

http://www.southernsoaringclub.org.za/a ... ors-1.html
http://www.southernsoaringclub.org.za/a ... ors-2.html
http://www.southernsoaringclub.org.za/a ... ors-3.html
http://www.southernsoaringclub.org.za/a ... ors-4.html
http://www.southernsoaringclub.org.za/a ... ors-5.html

The author states that "most CD ROM motors will have 9-pole stators, while hard-drive stators usually have 12 poles".

The following article has an animation that shows the movement of the magnetic field as the stator windings are commutated in sequence:

http://elabz.com/brushless-dc-motor-with-arduino/