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Simple Electric Motor Demonstration Videos

jayrob

jayrob

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I was messing around with magnets and batteries today, and made three different style 'simple motors' shown in the videos below...

This is nothing new, but I thought it was kind of cool, so I just wanted to show it is all... :)








Update:

I went ahead and experimented with two other styles of projects using the same basic principal...

Here's the videos: :cool:






AA battery:








AAA battery:



This one is kind of different in that one metal has to be magnetic. (able to get attracted by the magnet so that the battery can hang there)

And the other metal must be non-magnetic.

I used a rod of tool steel. Or it may be some kind of spring steel. I'm not sure. I got some from my wife's Grandfather.

Anyway, the other metal is some brass brazing rod... :cool:







I just finished another one...

This one is like the first one, except it is fit for a AAA battery. It was the hardest one so far. I guess because it was small, and difficult to get the coil balanced and spinning properly... (probably would work better with a thinner wire)














Click here to see my list of projects and tutorials! :)

 
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Re: Simple Electric Motor Demonstration Video

Yeah, homopolar motors are pretty cool. They are probably the simplest motors that you can make. The high currents and sliding contacts tend to keep them from being as efficient as other motors, but their low internal resistance allows them to discharge at extremely high rates. Nice video BTW:cool:
 
Re: Simple Electric Motor Demonstration Video

Just showing it as a project that anyone can do...

It takes a little trial and error to get the copper shaped correctly is all.

You want it to spin as freely as possible, and the contact to the side of the magnet needs to be minimal as well. (very low friction)

Flip the magnet and it will spin the opposite direction. :beer:




hydrogenman15 said:
... Nice video BTW:cool:
Click to expand...

:thanks:
 
Re: Simple Electric Motor Demonstration Video

Just thought id ask :D

I love simple things like that :)
 
Re: Simple Electric Motor Demonstration Video

Hmm... that's pretty cool, Jay :)
 
Re: Simple Electric Motor Demonstration Video

Seen it before.... but still mucho cool....

Jerry
 
Re: Simple Electric Motor Demonstration Video

I tried to get my Friend to make one of these but with a 175 lb of pull force magnet. He bought the magnet and started machining everything but got lazy and didn't finish it. It was supposed to look like one of those really old mechanical governors that you would see in mad scientist movies or on a steam engine or w/e.
 
Re: Simple Electric Motor Demonstration Video

Hey I just tried a couple of other different styles... :D



With this one, you can test the balance of the rod easily on the tip of your finger, and get it perfect before you try it out...






And while I was in the mood... :D

I went ahead and made a third type:



This one is kind of different in that one metal has to be magnetic. (able to get attracted by the magnet so that the battery can hang there)

And the other metal must be non-magnetic.

I used a rod of tool steel. Or it may be some kind of spring steel. I'm not sure. I got some from my wife's Grandfather.

Anyway, the other metal is some brass brazing rod... :cool:

I guess I will just add these two videos to the first post! :D
 
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Any idea of how much current the motor is pulling from
the battery or how long an alkaline AA cell would make
the motor spin....:thinking:

I also like this one....



Since the wire is not moving it would be easy to check
the current...


Jerry
 
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I did that one too!

Better wear safety glasses with that one though... :crackup:

It gets cooking super fast!

I didn't try to measure current, but I can tell you that it is a ton of current. The battery gets warm and stuff...

These are not very efficient, but just kind of a cool conversation project to have sitting around I guess.

Also, I'm sure the current will differ a lot, depending on what battery used, and how much weight or friction is involved. For instance, that first one I did, is using the most current with that D size NiMH battery!
 
Pretty Cool Jay.:beer: Never New About this Project until you Posted it.:gj:

The One that Makes the Battery spin and everything else stays in place is AWESOME.!!!

+:beer:
 
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I like that one too! :)

I just finished another one...

This one is like the first one, except it is fit for a AAA battery. It was the hardest one so far. I guess because it was small, and difficult to get the coil balanced and spinning properly... (probably would work better with a thinner wire)



Adding to the first post... :D
 
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