The new generator no effect counter B. EMF part 2 ( Selfrunning )

[Jimboot]

Sweet build @mcr . I tried your idea of having smaller mags on my prime mover for a shorter duration pulse but it turns out I need the torque that the longer pulse provides. Thanks for updating us.

[T-1000]

At T-1000,

This one is for you...

https://www.youtube.com/watch?v=bTL7Pvtm-3s

Info about it is in the comment section...
I just found out that there is here a time frame in which one can modify his own postings... ...which i find a little odd...lol

Nice build

Since you have 12 magnets, 8 cores and 6 coils the neighbor coils are on same phase and on same drag. In Grum's build of my design there are 16 magnets 9 cores and 8 coils which on a slight different induction angle. What is the best to make zero net cogging between magnets and rotor cores still have place for experimenting. My take was from Muller Dynamo on 8/9 arrangement...
Also I find intersting in your case with load reducing RPM and shorting increasing of RPM. In Grum's build any load or shorting will increase RPM. It is possible due differences with ratios on magnets/rotor cores arrangement. In your setup it seems you want to keep coils separate or keep low resistance load to have same result. That will be seen over more experiments...

P.S> About prolonged spinning - seems you are close to have self driving from generator coils? With scope and hall sensors on cores you might implement switching where induced magnetic field on coils help rotation and break circuit where it is against rotation.

Cheers!

[Pirate88179]

Hi T-1000,
Thanks...about the cogging...it is very little as i have it now but it still can do a bit better but there's a need to get rid of the eddy currents that comes into play at higher rpm...the higher the rpm the more we will experience it...but we do have the option to use far better materials for the iron segments...
Once i have it as good as possible freewheeling by hand than i'll go for better materials...
It just a little rpm drop when loaded with them leds but with a bit more rpm that problem should be fixed...
I've seen this many times in my own experimentings...
I still need to try the 2 set of 3 coils in series and parallel just to be sure...it might get me that speed under load even at these lower rpm's which would be cool... :PSelf driving generators coils... ...don't really know what you are saying here...
I have no scope...lol...i'm a scopeless man and doing pretty good without it...

I'm thinking of making a special setup only for your design because i do really need this one here for my own projects...
Will let you know how and what as soon as i'm done thinking about it...
Cheers

Would increasing the distance between the magnets and the coils reduce this?  When I made one of my Bedini motors, I used a lead screw arrangement so I could adjust the distance between the coil and the magnets on the rotor.  I found that a little turn on the screw made a big difference in the cogging I was experiencing.  I was able to precisely adjust the gap to find the sweet spot between output and cogging.

Just my two cents.  That is a nice build you have on your videos.

Bill

[shinz62]

Would increasing the distance between the magnets and the coils reduce this?  When I made one of my Bedini motors, I used a lead screw arrangement so I could adjust the distance between the coil and the magnets on the rotor.  I found that a little turn on the screw made a big difference in the cogging I was experiencing.  I was able to precisely adjust the gap to find the sweet spot between output and cogging.

Just my two cents.  That is a nice build you have on your videos.

Bill

Good point! If you look at that Gary Effect video you will notice that he plotted the magnetic readings on his "rotor" iron against the distance to the magnets and he noticed that there were varying results with different magnet strengths and also that there was a "cross over" point, a distance where the poles swapped field orientation between north and south.


It seems like if you could get your iron rotor near that cross over point then with a little tuning you could flip the direction using the load coil. Then tune the distance, magnet strength, and load on this arrangement for the highest efficiency.

[Pirate88179]

Good point! If you look at that Gary Effect video you will notice that he plotted the magnetic readings on his "rotor" iron against the distance to the magnets and he noticed that there were varying results with different magnet strengths and also that there was a "cross over" point, a distance where the poles swapped field orientation between north and south.


It seems like if you could get your iron rotor near that cross over point then with a little tuning you could flip the direction using the load coil. Then tune the distance, magnet strength, and load on this arrangement for the highest efficiency.

Thank you.  Here is one of my videos that demonstrates a simple way to do this:

https://www.youtube.com/watch?v=cRO8Pdh35bA

That is a pretty coarse thread but, at least it did allow me to manipulate that gap in a somewhat precise manner to achieve the best balance.

Just tossing out ideas here.

Bill