Aluminum - What are the effects on magnatism?

[poopypantallons]

I am working on an Adams motor and have been using HDPE as the primary material for the rotor (the piece that the magnets are embeded into). I'm thinking of using aluminum instead and have it milled out to my specs. Can someone explain the disadvantages of using aluminum for this? My Adams motor works pretty good, my son and I built it.

Thanks

[Feynman]

I thought about using aluminum for a machined version of my Bedini motor.

Aluminum is not paramagnetic (attractive) or diamagnetic (repulsive), so I don't think it would be a problem.  I cannot think of any way aluminum would adversely impact performance;  it is lightweight, non-magnetic, and strong.   However, I have not tried this by experiment yet.

[Freezer]

I thought about using aluminum for a machined version of my Bedini motor.

Aluminum is not paramagnetic (attractive) or diamagnetic (repulsive), so I don't think it would be a problem.  I cannot think of any way aluminum would adversely impact performance;  it is lightweight, non-magnetic, and strong.   However, I have not tried this by experiment yet.

I thought aluminum as well as copper produces drag when a magnetic field is present?

[Feynman]

I orignally looked it up here
http://en.wikipedia.org/wiki/Diamagnetic

and did not see aluminum listed, only copper.


BUT

I just checked again and you are correct;  aluminum is slightly paramagnetic.
   1.  Paramagnetic - some materials, such as aluminum, are slightly attracted by a magnet.
http://www.jclahr.com/science/physics/diamag/index.html

Thanks Freezer

[Sprocket]

Aluminium seems to have quite a bit of 'drag effect' around strong magnetic fields...

http://www.youtube.com/watch?v=1gKr4Lnv0eM

PS.  Just remembered that the Reed motor specifically uses aluminium in the OU process.

http://jnaudin.free.fr/html/trmdiag.htm