Superconducting magnet motor

[Honk]

The power needed to maintain the low temperature is how good the isolation is.
And that is pretty good with today standards. And the setup is totaly leak proof.
Once cooled you don't need to add any more coolant for a long long long time.

It's just the small amount of electricity needed to run the magnets that makes the puls motor, that's added.

So far the issue is to close the loop and get it running all by itself.
I'm not interested if it economical to supercool a motor. I just want a closed loop.
In all history nobody have ever been able to close-loop a motor/generator into self running mode.
But can it be done using supercooled magnets. Please don't take into account any economical issues.
It's the self runner that matters. Can it run by itself while producing excess power.

[RunningBare]

I can see the possibilities but the motor would have to be constructed in something like a vacuum flask, then there is the problem of getting the motion external to the flask, this could possibly be done with strong magnets, a set on the inside of the flask and a set on the outside, one thing is for certain, if you bring a spindle out from the flask you will create a conductor for temperature and the coolant will soon begin to warm up.

[Paul-R]

The US Navy is developing some interesting stuff with their new DDX Class
destroyer: http://www.ga.com/atg/EMS/homopolar.php
Paul.

[gaby de wilde]

In all history nobody have ever been able to close-loop a motor/generator into self running mode.

I don't think you can claim to know "all history". Science has repeatedly adjusted the definition of perpetual motion. Cant win? Change the rules of the game!

Yes, devices that self-run in a closed system are hard to find. But the main problem is that those close systems really don't exist. If they did exist however the energy available inside the system can be used an infinite number of times.

Cox clock, the Atmos clock the Beryl clock. Self powered devices have been build you see? Tesla build a really big one powered by water naturally running uphill.

There are a lot of them, solar doesn't run out, wind never depletes.

Lord Kelvin said heat engines and perpetual motion machines are impossible. Now you've added neutrinos to the mix, heat gradients, wind etc etc Those things are always available they are part of the open system. Can use them as perpetually as you desire.

A barometer is a perpetual motion apparatus unless you change the definitions. It will only take a bit of engineering to build a big motor/generator. Take a few thousand kg mercury and you can power a house. Must now try make it smaller and less aggressive.

no effort = no result

[Honk]

OK, I cannot be more sure than the rest of the scientific world that nobody have ever closed a loop AND produced excess energy.

There are many near perpetual objects in nature but none that can produce excess energy for ever in a closed system.
The planets, wind, solar power are near perpetual objects but they will fade away eventually.
This due to their big heavy duty mass. If they where just small objects about the size of a football you can be sure that any
load would drain and stop them almost at once. Perhaps not the small sun, if possible to exist in that size = a white dwarf.

But, If there is a chans to close a loop it might be due to super cooling when there is no resistance that consumes power.
Or someother way that nobody have ever thought of. As long as it doesn't conflict the laws of nature. And I do belive in those.