Muller Dynamo

[e2matrix]

Here's an update showing my current progress.

Video here: http://www.youtube.com/watch?v=2KaVcmXyktw

That's great lasersaber!  That's very encouraging to see those results at the stage you are at with your build.  Sounds like it is really spinning fast but 20K RPM is scary stuff.  Did someone put a digital tach on it?  I guess I'm wondering if it's really going that fast since Romero's was apparently running around 1200 to 1300 RPM at 12 volts.  What are you using for bearings?  I know you do top notch builds but just trying to understand why or how it's going that fast.   

There must be some fair current in your output coil voltage also to be able to even get a glow out of a 40 watt AC light bulb.  Sounds like you're well on your way to an OU unit when all the coils and magnets are in place and tuned. 

[mikestocks2006]

@lasersaber,

Good work. :-)

If you measure 345Hz at one coil then multiply by 60 and divide by number of magnets (
to get the RPM. (345 * 60) / 8 = 2587 RPM.

GL.

It sure sounds more than 2600 rpm

But even at that speed, should any of the mags get dislodged, it would fly out in excess of 150 fps… with its high-density it packs a lot of energy, and it may cause some serious damage.
A couple vertical Lexan panels, or at least full face shield may be warranted.
Great work as always.
Thanks for posting
Mike

[e2matrix]

@lasersaber,

Good work. :-)

If you measure 345Hz at one coil then multiply by 60 and divide by number of magnets (
to get the RPM. (345 * 60) / 8 = 2587 RPM.

GL.

That sounds safer and I'll be relieved if that is the actual speed as I could almost feel that unit exploding at 20,000 rpm despite lasersaber's quality builds.  That sort of rpm takes extreme precision balancing for an 8 inch diameter device.

[TEKTRON]

Hi Guys

Not sure if this has been 'gone over' before but I will post it anyway. It is a struggle keeping up with the posting during the week.

I have been busy with scissors and sheets of paper waiting for parts to arrive.

I have something to show regarding the 'event' travel. The 'event' being the single passing of a magnet and coil,

approach/TDC/recede

which has been shown to be magnified by the odd even arrangement of magnets/coils (number of magnets times segments of rotor)

Muller Dynamo. Comparison between numbers of coils and magnets

http://youtu.be/BaqRXKRSFOc

Conclusion
It does not matter if you have an odd or even number of rotor magnets, if you want 'Events' to travel 'with' the rotor direction you must have a lower number of stator coils.

I have a pdf of the sheets I used if anyone wants to play with the combinations.

All the best

Interesting Bourne, I would like to have the pdf to play with the patterns
Thanks, John 

[freenergy850]

Hi Guys

Not sure if this has been 'gone over' before but I will post it anyway. It is a struggle keeping up with the posting during the week.

I have been busy with scissors and sheets of paper waiting for parts to arrive.

I have something to show regarding the 'event' travel. The 'event' being the single passing of a magnet and coil,

approach/TDC/recede

which has been shown to be magnified by the odd even arrangement of magnets/coils (number of magnets times segments of rotor)

Muller Dynamo. Comparison between numbers of coils and magnets

http://youtu.be/BaqRXKRSFOc

Conclusion
It does not matter if you have an odd or even number of rotor magnets, if you want 'Events' to travel 'with' the rotor direction you must have a lower number of stator coils.

I have a pdf of the sheets I used if anyone wants to play with the combinations.

All the best

Thats very interesting. Good observation. Maybe thats part of the key here, "events" happening opposite the direction of rotor travel.