Magnetic Engine Video

[Low-Q]

Video at :

https://www.youtube.com/watch?v=MjlBXQ9ViEc&feature=youtu.be


1) Sorry for the quality of experiment.  I have used available junk materials.

2) Since I have used short pendulum arm,  the magnet arm (pendulum) is moving very fast and I am unable to  synchronize the movement 
    of shield with it by hand.  Hence pendulum is stopping in between.

3) If you use lengthy pendulum arm with strong magnets,  the arm moves through a longer distance and you will get    enough time to
    move the shield.

4) Since the shield is thin I have used a biasing magnet of opposite pole on the shield to absorb the flux of  stationary magnet.


Hope you will enjoy.


Earlier thread at http://www.overunity.com/11994/magnetic-engine/

This principle isn't sustainable without input work.
The pendulum magnet approach because it is attracted to the steel. So therfor you must spend the same amount of force to remove (Force * remove = energy) the steel so the stator magnet can have more influence on the pendulum magnet. The energy causing the pendulum magnet and the steel plate to move is exact equal and opposite. No excess energy. It's not an assumption, but I know this from measuring experiments - which also happens to be correct in simulations as well.


Vidar

[vineet_kiran]

You are putting in a small amount of mechanical energy each cycle with your hand. When properly timed to the pendulum swing, some of this energy is stored in the mechanical resonance of the system and the amplitude of the swing can build up.

This explanation  is very well applicable for a normal mechanical pendulum executing simple hormonic motion. The magnetic pendulum used in the experiment doesnot work like a simple pendulum.  Its amplitude simply depends on the repulsive force experienced from fixed magnet.  I have made it like pendulum because building piston and flywheel arrangement is difficult for me.  As you can see from the video, its amplitude rises within 2-3 movements of the shield because when pendulum comes closer and closer to the fixed magnet,  it experiences greater and greater force since magnetic force is inversely proportional to square of the distance between poles and directly proportionalto product of strength of poles.

You cannot continuously extract any more energy than you are continuously applying with your hand or the resonance and the amplitude will collapse.

Amplitude of pendulum is collapsing in that experiment is only because of miss-timing. When pendulum moves towards fixed magnet, it should not experience repelling force (shield should cover the fixed magnet). If it experiences repelling force then its momentum and energy will be damped and it comes to halt. Shield should open only when pendulum comes to a predetermined closer position. Since I am operating the shield by hand and pendulum is moving very fast, I am unable to corrrectly time the movement of shield hence the pendulum is stopping.

You are also experiencing losses due to friction and eddy current heating in the moving "shield", so with each cycle, the actual energy delivered to the pendulum is less than the energy you are applying with your hand during each cycle. This means that the system cannot be self-looped with no outside source of energy aiding the looping. It is true that you can extract all the energy stored in the pendulum at once, and this will be higher than the energy of a single input cycle of the hand moving the shield. Power is not energy and especially, peak power is not energy.

This can be easily verified by keeping the magnet vertical and keeping a weight on shield. When shield moves down magnet deflects (repells) the pendulum mass (hence weight) to some height above its mean position.  By comparing the weight and height of deflection of pendulum  with weight and height of shield movement you can easily know the input and output energy in each cycle without considering power because time remains the same.

The general problem with magnetic "shields" is that they are strongly attracted to the magnet being "shielded". This means it requires work to move the shield into and out of the shielding position. Since the shields are also almost always metallic and electrical conductors, they will experience eddy currents and energy loss due to Joule heating with every movement of the shield.

Even if the shield is attracted strongly towards the magnet, it can be moved easily over the magnet by using steel ball roller since ball is held to the magnet by point contact. Frictional force depends on area of contact and also coefficient of friction between the contact surfaces.  You will experience it if you conduct the experiment.

Eddy currents and joule heating lossess are negligible at lower speeds and it is possible to operate this system at lower speeds and get higher energy output.

Thanks for applying thought on this experiment.

Regards,

Vineet.K.

[Low-Q]

@Vineet,


You can make this experiment completely "hands free", and very simple.


On the pendulum rod close to the hub you can place a shield that covers the fixed magnet when the pendulum magnet is farthest away. This will cause this magnet to approach the fixed magnet again.
If the pendulum increase flucuations by itself (What I strongly believe will not) you have proved your design.


Experiments done without any external influence will always be the most reilable ones. Then you will take away any possible doubt.


Vidar

[vineet_kiran]

This principle isn't sustainable without input work.
The pendulum magnet approach because it is attracted to the steel. So therfor you must spend the same amount of force to remove (Force * remove = energy) the steel so the stator magnet can have more influence on the pendulum magnet. The energy causing the pendulum magnet and the steel plate to move is exact equal and opposite. No excess energy. It's not an assumption, but I know this from measuring experiments - which also happens to be correct in simulations as well.
Vidar

Observe the video closely.  Pendulum is not attracted by the shield.  When you cover the fixed magnet with shield, it (shield) cuts off the repelling flux with respect to pendulum hence the pendulum falls towards its mean position by gravity and moves further towards fixed magnet due to its momentum. At this point if shield is moved exposing the fixed magnet, pendulum will again get repelled away.

I have suggested the following points to eliminate the same problem :

1) Keep the fixed magnet very strong and moving magnet considerably weak because a weak magnet cannot get attracted
   towards shield from far distance.

2) Maintain some minimum distance betwee fixed magnet and pendulum magnet because when weak pendulummagnet comes closer
    to the fixed magnet (at maintained minimum distance)  it will not create much change in density of flux with  respect to shield 
    because  shield will be moving on a strong magnet and in a plane parallel to the pole of magnet.

[vineet_kiran]

@Vineet,

You can make this experiment completely "hands free", and very simple.

On the pendulum rod close to the hub you can place a shield that covers the fixed magnet when the pendulum magnet is farthest away. This will cause this magnet to approach the fixed magnet again.
If the pendulum increase flucuations by itself (What I strongly believe will not) you have proved your design.

Experiments done without any external influence will always be the most reilable ones. Then you will take away any possible doubt.

Vidar

If you keep the shield fixed on hub,  at some point the attractive force between shield and strong fixed magnet will come in equilibrium with  repelling force of pendulum magnet and fixed magnet. It will not work.

You can keep a sliding shield on pendulum magnet which slides up or down when pendulum  comes closer to the fixed magnet.  In that case you have to make pendulum magnet very strong and fixed magnet very weak.  It is a complicated mechanism and I cannot do that.

This is a simple experiment without involving any cost. Why don't you build it as it is and verify it?