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Old 08-23-2015, 07:05 PM
MadMack MadMack is offline
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Join Date: Apr 2015
Posts: 73
Magnet motor revelation

I have thought long and hard about revealing the results of my magnet motor experiments but time is my enemy and time is growing short. I want to get this information out before it's too late so I wish to present to you a simple concept for a successful magnet motor. It is a basic rule of nature and that rule is balance. Yin and yang. There is symmetry in nature wherever you look.

This is a pure magnet motor without electrical coils. It seems that everyone claims you can not have a pure magnet motor because you can not get past the sticky point. Well, you can, and it is relatively easy to do. All you have to do is set up your magnets for a net 0 magnetic pull. That means for every set of magnets that are in attraction you simply provide a set that is in repulsion. Think about that, as one rotor / stator magnet set is attracting each other, there is another set that are repelling each other. The two forces cancel each other. How simple.

Now the dubunkers are probably already typing their reply calling me an idiot because no magnet motor could possibly run without magnetic attraction! Well, you must have magnetic attraction so where does it come from? It comes from iron ramps between the stator magnets. You have all seen Bedinis picture that shows the 4 magnets on the rotor and a repelling magnet at the end of a curved ramp on the stator. There is the basic concept in all its simplicity. What isn't shown is an opposing ramp with it's attracting magnets for balance. Other than that, the principles are all there including a useful magnetic shunt on the stator magnet. See? It's not even my idea, I just applied symmetry to it. The only tricky part is maintaining the magnetic symmetry at the end of the ramps next to the magnets.

The next thing is to build one of these that has significant torque. Torque can be improved by altering the vector of the magnetic pull. You do this by placing the rotor magnet so its magnetic axis is not through the center line of the rotor shaft. The torque given by the magnet as the rotor turns is also related to the rate of change in distance between the rotor magnet and the ramp. Short ramps will provide more torque than long ramps. Shaft torque can also be multiplied with gear or pulley reduction, obviously.

One set of magnets every 45 degrees works well. Magnets at 0, 90, 180, and 270 degrees in attraction. Magnets at 45, 135, 225, and 315 degrees in repulsion. This balances the side forces to the rotor shaft and stator housing. Magnet pairs every 60 degrees will also work.

Other details:
The magnets on the rotor all have the same polarity facing out to the stator.
There must be an equal number of magnet sets in attraction and repulsion at the same time.
The ramps pivot at their center lines. This provides a means to throttle, stop, or reverse the motor rotation.
The ramps are steel with little or no magnetic retention.
I used square or rectangular magnets, not round.
The rotor and stator are nonmagnetic material. Do not use aluminum or any material that will develop eddy currents.

One thing I have not tried is a second set of ramps on the rotor that could possibly double the torque.

It is easy to build one of these motors that will not work. With a little experimentation and careful attention to detail you can build one that does work.

There it is. All of it. Now I can rest with a clear conscience. You can take it at face value or not, your choice.

Best regards to all of you,
Mack
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