HELP! Need to Recharge Magnetic Rotor

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johnnybravo Commentator Join Date: Aug 2006 Posts: 89 Good Answers: 3	HELP! Need to Recharge Magnetic Rotor 08/16/2006 1:36 PM
	I hope you can steer me in the right direction. I have a 10 inch diameter X 36 long steel drum with rare-earth magnets imbedded in it. the drum has been overheated, and subsequently the magnets have lost thier attraction. can anyone advise a company that might be able to "recharge" this rotor? Or, a way to do it myself??? thanks Johnny B
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DaveMeador Associate Join Date: Dec 2005 Location: Wheaton IL, 30 mi W of Chicago Posts: 49	#1 Magnet recharging 08/17/2006 12:05 PM
	Check with Dreisilker Motors, located on Roosevelt Road, Glen Ellyn, Illinois, USA.
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Bob B. Power-User Join Date: Feb 2006 Posts: 139	#2 Re - Magnetize 08/17/2006 12:47 PM
	If polarity doesn't matter, you can wrap the cylinder with a wire coil. You will need an in-line fuse sized to blow when connected and a light bulb to complete the circuit. When you plug it in to AC the fuse will blow on power up providing in effect a DC current through the coil which should magnetize it.
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Haajee Guru Join Date: Feb 2006 Posts: 1758 Good Answers: 6	#3 In reply to #2 Re:Re - Magnetize 08/17/2006 8:44 PM
	Sorry it is not that simple. Magnetizing Rare-Earth Materials' need Special Magnetizers of very Hi Energy & special-Gadgets. Regards
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thefinis Participant Join Date: Aug 2006 Posts: 3	#4 What is it 08/19/2006 12:59 AM
	If this is a generator then the poles should be alternating. The best way is going to be to replace the magnets as it is doubtful you will ever get them back to their original state.
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thefinis Participant Join Date: Aug 2006 Posts: 3	#5 link to recharging magnets experiment 08/22/2006 5:41 AM
	http://www.rcgroups.com/forums/showthread.php?t=30 7133 This fellow is doing lots of experimenting with demag and remag neos. The link is to a forum thread that on post 7 has the list/links of where each part of the experiment is. It really isn't usually done on neos without special equipment but he was able to get an n45 and n50 back to 96% of original strength. http://www.rcgroups.com/forums/showthread.php?t=30 7133
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Bob B. (1); DaveMeador (1); Haajee (1); thefinis (2)

You might be interested in: Industrial Magnets, Rare-Earth Magnets, Drum Pulleys

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