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Reversing Lenz Project
Well it seems I am not the first to come up with this idea. It has been tested, and the results are in line what I suspected.

From the information above, it seems like the rotor would need to be constructed in a very sturdy fashion to sustain the centrifugal forces. 

3d printing will not cut it. But I will still continue with a 3D print for testing purposes. If it goes good, I will go for the proper constructed rotor
Well I got a 24 hours print just starting for the first rotor.  So tonight I may wind some coils.

On a side note, the guy I mentioned earlier completed a FEMM simulation of the device.
(06-19-2024, 01:34 PM)Jim Mac Wrote: Notice- This Thread is NOT for posting videos or ideas of other ways to reverse Lenz.  This thread is to BUILD and DISECT "THIS METHOD PRESENTED"..  If you have other ideas, methods, etc start a new topic-  

I haven't posted in a bit because I've been busy with this new strategy.  It is highly related to other topics being discussed here but has a hidden twist.  I have verified it with my scope and it reverses Lenz Drag so induction assists motion on BOTH approach and departure.

I will start slow explaining it.  It is quite simple to understand, but it has to get through to see it.

First and Obvious-  In a regular Generator-  when a magnet is APPROACHING, the magnetic field is GROWING.  And when the magnet is DEPARTING, the Magnetic Field is SHRINKING.  This causes Lenz Drag..

Now what if we reversed it so a magnetic field is SHRINKING on Approach and GROWING on Exit?  The coil thinks the magnet going away when it is actually coming in, and thinks it is coming in when it is actually leaving!  So the drag ASSISTS motion in and out..

So HOW so make this happen?

FIRST, understand what I am about to show..

1.  When ferrous material is between 2 magnetic polarities, the metal is neutralized with No Magnetic Field.  Perfectly Balanced.

2. When the metal is over the SOUTH side of a magnet, the metal turns SOUTH.

3. Likewise, when metal is over the NORTH Side of a magnet, the metal turns NORTH.  


Keep the magnet stationary and reciprocate the bolt back and forth over the magnet. The bolt is now going SOUTH / NEUTRAL / NORTH / NEUTRAL/ Repeating.  

Now The Special Sauce!

Align an induction coil Dead Center of the magnet at the Blotch Wall..  

Now reciprocate the bolt back and forth..  What happens?  

Answer-  We reversed it as discussed earlier!  

The bolt has a strong magnetic field as it is furthest away.  As the bolt approaches, the magnetic field in the bolt WEAKENS. And when the bolt leaves Top Dead Center to the other side, the Magnetic Field in the bolt STRENGTHENS on Departure....

So the bolt is the magnet.  the coil thinks the "magnet" is coming IN when it is going away, and the coil thinks the "magnet" is going away as it is coming in!

There is no reason it needs to be reciprocation, as rotation will probably work better, but I chose reciprocation to explain in this post.  

I have verified the wave reversal on my scope.  I am currently working on best alignments and methods before I run a test with coils..  Currently I am working on determining what geometry and materials results in the most magnetic force in the ferrous material with the least cogging.  Once I am happy with the results, I will add the coils.

I encourage others to work on this approach.  And I invite other builders to share their progress and findings here.


 I believe that putting any magnetic conducting material between 2 opposing polarity magnets only one outcome will occur; magnetism will take the path of least resistance and only take the iron bolt as a shortcut between the 2 magnets
I slapped together the first rotor test.  It is cogging very very bad.  I am not going to witness speed-up with this much cogging.  The design needs modification.  Also I only have 1 small coil hooked up.

None the less, it is producing some output.  Not much, but some..  So I can evaluate the wave.

Here is the video.

(06-23-2024, 07:07 AM)Jim Mac Wrote: During the entering stage (causing the magnetic field collapse)   The coil is far enough from the center of the magnet to barely notice any of the rotor's field growing to TDC of the magnet. Whatever it does notice will be filtered out with a diode.  So none of the initial growing field will influence the rotor. Then as the rotor approaches TDC of the coil, that field in the rotor is dropping according to the reverse square law. 

" that is decreasing will encounter an initial strong north in the coil that will decrease as the metal reaches the center of the coil"

A coil's induced current is not linear with distance. You can verify by using your function generator to create a positive biased sinewave and feeding it into a transformer.  Scope the input and output.  You should notice Single polarity wave coming IN, and a full 2 polarity sinewave coming out.  

Although I do agree at this point the majority of the advantage will probably be on the going out field growing. 

Think of this:  Growing North = Shrinking South  and Growing South = Shrinking North.  The coil has no care what side the bias charge is on, only if it is growing or shrinking.  And the output current is only dependent on the amount of magnetic change.

Test-  Hook a coil to your scope.  Take a magnet and Push the north field IN.  Observe the direction of the current.  Now flip the magnet so South is facing the coil and Pull the South Away.  You will notice pulling away produces the exact same way current with equal intensity between both tests.

Overall, you may have a point that the incoming may do little to nothing in aiding us.  Even so, all current that hurts rotation can be filtered out with a simple diode.

I am close to testing stage, but now my work week starts. But soon I will have more
Thanks for the explanation. It's helped me understand it a bit more.
So I got some ferrite rings roughly the same size of the magnets and made a new rotor to test.  Cogging has now been reduced significantly.  

Here is a video where I am at

New numbers and results coming shortly!  Got the 4 coils in place..  It can actually produce some real output now!
Okay-  So Output is pretty Damn Good with 4 coils!

at roughly 2000 RPM, using 8V input.  I can get:

all 4 in series:  7.5V AC Open Circuit @ just about 1/2 amp Short Circuit
2 in series, then parallel both series:  3.75V Open @ almost 1 amp shorted
All 4 Parallel:  almost 2V open circuit and almost 2 Amps Shorted.

In series, it produces a near perfect sinewave output.

Lenz Drag is bare minimal.  

This is great! Keep it up!
Great results Jim!

What is the V/A you are driving with?

Are solid slugs instead of rings on the list?

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