Fun with homopolar motors

[Leftyretro]

Ran across the below video yesterday and had a lot of fun researching about them. Not real useful for anything practical as it drains the battery pretty quickly being a almost dead short across the battery. However it should be fun to try and impress my grand daughter with them. I found a ton of Neodymium Magnets available on E-bay and sent an order off for some last night.

Be sure to watch the whole clip as my favorite version is the last one shown. That last one might be an interest to you cat owners

Mark's Homopolar Motors, 02 - Video

Lefty

 

[valve]

Last one is interesting...

This one has kicked me a lot recently:-
YouTube - Free Energy - No Fuel Magnetic Motor