easy build motor. edited

The simplest Homopolar motor can be made with a battery, circular magnet, and a wire (there are different variations on youtube, some also use a screw in vertical rotation).

This one also has a screw, but the point of the screw seems necessary only to overcome friction.

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About This Video gilles.charles@univ-orleans.fr

gilles.charles@univ-orleans.fr

Bigger...Faster The rotation is produced under the effect of the Lorenz force. The ring magnet are set up so that the magnetic field is vertical; the current enters the magnet through the upper side of the sphere magnet ant exits through the peripheral side of the ring magnet. When the current flows trough the radius of the ring magnet, it is almost perpendicular to the magnetic field and the resulting Lorenz force is tangential. This causes the rotation of the magnet. Once the magnet have been set in motion, the rotation continues for a long time, as there is almost no drag. This device could reach very high speeds, but it has to be very well equilibrated (balanced).
Added: May 15, 2007




http://www.supermagnete.de/docs/unipolarmotor_english.pdf

This company doesn't ship to the USA, but it was interesting to see that they experimented with the Homopolar motor.

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Homopolar motors are a technology used on US Navy submarines, but I would think that a hobby magnet company wouldn't find the motors to be a new developement, but magnetism has always been considered somewhat of a mystery to science. The newly "rediscovered" THEORY OF EVERYTHING (actual name) is challenging many old ideas of understanding including magnetism.
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About This Video

The wire can get hot if you leave it on for a long time like 1-2 minutes straight so be careful not to burn yourself.


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There seems to be a reluctance to speak in these videos about the hompolar motor. I finally found that has voice, but it is a foreign language.

Apparently, it doesn't have to be a CIRCULAR magnet and the magnet doesn't have to be touching the negative terminal of the battery (I can't see the markings on the battery, foreign batteries might have the terminals reversed).

There was a man named LEEDSKALIN who spoke of "magnetic currents".
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About This Video

Simple homopolar motor created with a magnet, a battery and a coil!

Developed by Embedded R&D dept.

http://www.develer.com/
(less)

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We Will Teach You How To Make An Homopolar Motor
Added: September 09, 2007

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About This Video


It's actually called a homopolar motor.
Don't ask me how it's works.:)
Added: September 20, 2007

This motor that has a coil and is a version of the kit motor sold at scientific hobby companies. It has a battery, but it's the magnetism and the coil configuration that is an interesting variation from regular motors with an armature. The fact that it is homopolar is interesting also.





















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