Perpetual motion

[Range Rover Blues]

I can't get my head round this, I've been reading up on perpetual motion motors or so called over-unity engines, like this one.

http://www.youtube.com/watch?v=PFGiWiXMHn0&feature=related

I know it's got to be a con, but I can't get my head round it.  Engineers claim that a magnetic engine can create perpetual motion, the planet is saved :dance:

[Boggert]

It has to be fake, as it would be the answer to the energy crisis. However its not hard to figure out the basis of how a magnetic one might work.

[Evilgoat]

Seen these before and its a fake, if it wasnt there would be more noise about it. Not sure they are true over unity machine rather than very, very efficient ones. Even that counts for something though.

[J B]

why must this be fake, i see no reason for the theory not to work, though i can see these motors might suffer from a mojor lack of torque and would stall easy under load, but if they spin up fast enough it could be geared down enough to be usefull in power generation, mmm interesting stuff, i wonder what the oil companies make of them ??

[muddyjames]

I reckon it is done by magnets. Isn't there a train in Japan that runs on electro magnets?

As the magnets on the "track" get turned on and off it makes the magnets on the track and the train repel against each other causing motion. Could the same thing be happening here except once that wheel is going it just gets faster and faster as the magnets repel each other?

I did notice 2 wheels on that thing that was spinning. Could the outer ones be + and inner be a - one?

[Disco Matt]

Perpetual motion simply cannot work. You can make things ultra low friction (brushless motors with ballraced bearings for example) but you can't get something for nothing.

The Japanese "Maglev" trains use magnets to support the weight, so the train floats above the track. It still needs power however, as air resistance will slow it down. You can get higher speeds for the same power input though.

[Tommo]

I reckon it is done by magnets. Isn't there a train in Japan that runs on electro magnets?

As the magnets on the "track" get turned on and off it makes the magnets on the track and the train repel against each other causing motion. Could the same thing be happening here except once that wheel is going it just gets faster and faster as the magnets repel each other?

I did notice 2 wheels on that thing that was spinning. Could the outer ones be + and inner be a - one?

to 'switch magnets on and off' they need to be electro magnets (unless you use like machine magnets but takes a lot of energy to work them as well)

and electro magnets use leccy, so pointless.

[electricbluebadger]

Impossible..... simple physics

energy cannot be created or destroyed... perpetual motion is impossible.

Cheers Steve

[clbarclay]

May just be me being cynical, but in that clip you never see the other side when its accelerating, only when decelerating, so the easy way to produce that video is to have a motor on the back side with something like a push on friction drive coupling, get it spinning, remove the motor and then move the camera to show the back side.

Perpetual motion is a nice idea, but in the words of homer simpson "In this house we obay the laws of physics"


I like this theory for perpetual motion
http://www.youtube.com/watch?v=wvRzWYCZ2e0