solar-motor 2.0

Wolfram-G · Jan 5, 2016

Hello everybody,

my name is Wolfram and I'm new here in this forum.

About two years ago I became aware of mendocino-motors.
I was fascinated of the noiseless and wearfree rotation of this engines and I wanted to built my own version of it.
Because of the nessesary high precision, this turned out to be extrem difficult.

I realized that this is only possible with a milling cutter. So I started reading a lot about building one on my own.
(It took about 2 years...)

Today I can work with much more accuracy and precision.
In November 2015 I finished my project and I want to introduce it to you now.
I am very curious about your opinion and hope you like it!

Enjoy

Wolfram

BMyers · Jan 5, 2016

Very cool. Nice work

yardbird · Jan 5, 2016

Yeah that is pretty cool. Well done! Welcome to the forum...

Brent

edwin dirnbeck · Jan 5, 2016

DANKE-schon,This is fantastic,Edwin Dirnbeck

EPAIII · Jan 6, 2016

Well, yes it does look cool.

But to get it straight, you have constructed a solar (light) powered motor that is over 300mm long (that's over a foot in English units) that produces so little power that you had to use magnetic levitation (bearings). And at what cost?

It is a nice demonstration, but is there a practical goal?

Limy Sami · Jan 6, 2016

Very good work and an interesting project, I like it.

It's only my opinion, but I think you blew it with the fancy photography and music, but I'm just an old fart.

Well done and welcome aboard

mike_kilroy · Jan 6, 2016

EPAIII said:
Well, yes it does look cool.

But to get it straight, you have constructed a solar (light) powered motor that is over 300mm long (that's over a foot in English units) that produces so little power that you had to use magnetic levitation (bearings). And at what cost?

It is a nice demonstration, but is there a practical goal?

I agree, very neat. Looks like it was fun to accomplish too.

But I have to ask: What powers the magnetic bearings? It appears they are powered from external source, not solar. I think if you want to show a solar motor, solar needs to power ALL OF IT, not just a small portion of it?

Philabuster · Jan 6, 2016

mike_kilroy said:
I agree, very neat. Looks like it was fun to accomplish too.

But I have to ask: What powers the magnetic bearings? It appears they are powered from external source, not solar.

Permanent magnets in repulsion. No external power source needed.

mike_kilroy · Jan 6, 2016

Philabuster said:
Permanent magnets in repulsion. No external power source needed.

If true, great! All motor magnetic bearings I have ever worked with in the industrial world have had very sophisticated closed loop control of the two electromagnets to maintain proper position. Guess there is no reason one cannot line up PMs to hold a no loaded motor in place like that.

sch · Jan 6, 2016

Congratulations to Wolfram both for the production values of the video and the nicely finished motor.
Both are very well done.

magneticanomaly · Jan 6, 2016

I suppose mirrors could be positioned to illuminate more of the circumference at once. I agree.ovely concept and execution, but i see no practical application. But I would have said that to that Tom Edison guy, too.

mark costello · Jan 6, 2016

It is a good start, it might work places that are off the electric grid. Not much power right now, but early automobiles were very slow also. Keep it up, We might really need these in the future.

Wolfram-G · Jan 8, 2016

Hello everybody,

Thank you for your interest and the nice comments.

Wolfram

dgfoster · Jan 9, 2016

Wolfram,

Are the suspension magnets polarized axially or radially?

Did is you have issues with crashes of the armature if it gets out of the ideal location in its suspension?

Denis

adatesman · Jan 10, 2016

Has to be axial, as it would snap together every 180 degrees of rotation if it were radial. Added bonus is that axial means he could offset the magnets to bias the rotor into the end plate.

Quite clever, IMO.

dgfoster · Jan 10, 2016

adatesman said:
Has to be axial, as it would snap together every 180 degrees of rotation if it were radial. Added bonus is that axial means he could offset the magnets to bias the rotor into the end plate.

Quite clever, IMO.

There are radial magnets with the South Pole covering the entire outer surface and the North Pole entirely central. They are less common but available. There may be instability problems with axially magnetized magnets. That is why I am hoping the OP will enlighten us as to what he used..

Denis

Wolfram-G · Jan 10, 2016

Hello Denis,

The magnets are polarized axial.
The Rotor is not able to leave its position on its own.
Therefore it can not crash.

Wolfram

dgfoster · Jan 10, 2016

Wolfram-G said:
Hello Denis,

The magnets are polarized axial.
The Rotor is not able to leave its position on its own.
Therefore it can not crash.

Wolfram

Thank you! I guess a little care is needed when placing the armature so that you are sure to stay a bit to the left as things could happen fast if you get a bit to the right in this drawing. That is what I was wondering about, but I can see there is a virtual magnet upslope for short distance to the right and with care all is good. There would also be potential problems with radially magnetized magnets, but the slope would be symmetric with the hump at the midpoint between the mags.

Denis

adatesman · Jan 10, 2016

dgfoster said:
There are radial magnets with the South Pole covering the entire outer surface and the North Pole entirely central. They are less common but available. There may be instability problems with axially magnetized magnets. That is why I am hoping the OP will enlighten us as to what he used..

Denis

True, but the magnets in the video were clearly not monopolar, which are assembled from multiple segments held together in a housing of some sort.

dgfoster · Jan 11, 2016

adatesman said:
True, but the magnets in the video were clearly not monopolar, which are assembled from multiple segments held together in a housing of some sort.

You sure about that? Did you check out sintered unipolar ring magnets prior to writing the above. I don't mind being corrected if done correctly. I did some looking prior to posing my original question to the OP.

Example 1: Uni Pole Radial Oriented Magnetization Ring NdFeB Magnet OD70MM ID62MM 20mm N45 | eBay
Example 2: Radial Sintered Magnets - Magma Magnetic Technologies

Denis

solar-motor 2.0

Plastic

Hot Rolled

Titanium

Hot Rolled

Diamond

Diamond

Stainless

Diamond

Stainless

Hot Rolled

Titanium

Stainless

Plastic

Diamond

Cast Iron

Diamond

Plastic

Diamond

Cast Iron

Diamond

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