Remagnetize a rotor
 

How can I remagnetize a demagnetized rotor?
I heard that this can be done by applying a magnetic field around the rotor which is stronger than the magnet.

Any reply will be greatly appreciated

If you have a hyper powerful electro-magnetic field generator it may be possible, otherwise you have a nice fridge-magnet to play with; time for a new rotor ( what motor is it, are the windings burnt/ black/ smell like an ash-tray? )...

It's from a Novak Ballistic 540 5.5T.(12.3mm)I was running and my car suddenly stopped.It was cogging too.It wasn't hot.

The windings are ok.Tested them with an ezrun rotor.(I built a motor with ezrun can and rotor and novak stator....)

Not sure.
 

Not too sure that would work very well. Kind of like re-bending something like an aluminum flat bar after it has been bent for the first time. It will always be weaker because of the initial failure. I would think that the only place that would have the equipment to do so might be a University lab, or a place where magnets are made. Considering what it might take to remagnatize your rotor, that you may just be safer to purchase a new rotor.

I too would just get a new rotor. Even if you did remagnetize the old one, it likely won't be as strong and will reduce the efficiency of the motor by a substantial margin; and every 1% can make a BIG difference in temperatures.

http://www.youtube.com/watch?v=QjO3m4d2g1k

At about 3:15 they show how they make magnets for electric motors and the process of magnetizing the material. Not something you can do in your workshop or garage!

It helps. Thanks for posting.

I can't do something like this at 4:58?

Buy a new rotor :lol: I doubt you have a 300 volt DC & 30amp PSU anyway...

............

Yeah......I don't have a psu like this.....

Anyway,thanks for posting guys.

@Bondonutz No,it's only for screwdrivers.

Bondonutz whit.
 

Obviously you don't recognize his whit. That was the point of his port. He always has something funny for inputs. Thats just his trade mark.

heh...I'm new...I'll rearn soon