Motor ? for patrick

[whitrzac]

Originally Posted by _paralyzed_

gamma rays, I think. And you have to make a laser sound with your mouth during the process.

on the real though: here is a tool by trinity to test the magnetic strength of your rotor http://www.teamepiconline.com/shop/i...?item=TEP3000S

that can be made from parts from an old CD drive and an RS project box it won't give you an accual "gaus" rating, but it makes it easy to compair rotors

[J57ltr]

I used to work for an oil field tool company a while back and we used to “charge” AlNiCo magnets by placing them in a jig that had a coil. You placed the slug into the aperture and pressed a button that started a small timer circuit that applied a magnetic field to “charge” the slug. Before you charged them you couldn’t even pick up a paperclip, it would stick but didn’t have enough power to pick it up. After the process was done (about 10 seconds) they would hold around 25 # I don’t remember how many gauss it was (about 16 years ago) but it was pretty high. I have also seen the magnet zappers for 540 sized motors they have 2 laminated steel poles that are cut to allow a motor (with the can) between the poles and press a button that starts the machine. When I asked about them I got “it works great” but when I asked exactly how it worked I got blank stares. It looked like a big electromagnet.

Jeff

[Pdelcast]

You really can't "zap" neo magnets -- they require a HUGE magnetic field -- Just the pole pieces to magnetize them weigh about 50 lbs each.

The magnets we use are about 15 times more powerful than "ferrite" magnets used in brushed motors.