Magnetic Gear

[gravityblock]

....if you have a CD spindle with all north facing magnets and another all north facing magnets, if you push them together where they align inbetween each other but still repel each other wouldn't that work?

If it's setup like this video http://www.youtube.com/watch?v=IlUY3snoWI8 , then no.  The ring magnets in the video are in attraction mode.  It wouldn't work in repel mode either.  When axial magnetized magnets rotates on their magnetic axis, then the magnetic field remains stationary.  This is Faraday's Paradox. 

A magnetic stirrer would work.  All you need is a pc fan, two round axial magnetized magnets or 1 radial magnetized magnet, and a magnetic stir bar.  You don't need all the circuitry that is in the video, that is for adjusting the speed.  With the magnetic stirrer you can have your own yeast starter for home brewing or for making colloidal silver and other purposes.  http://www.youtube.com/watch?v=uPgLMeQb7c8

Two circular halbach arrays aren't difficult to build.  This would give you the best magnetic coupling.  Here's how to build your circular halbach's, http://www.youtube.com/watch?v=CjTOegBTSV0

Edit:  Axial magnetized magnets have poles on the opposite sides.  North pole on the "tails side" and south on the "heads side".  Radial magnetize magnets have both a North Pole and South Pole on the same sides of the magnet.

[Azorus]

Thanks! Answered my question