Muller Dynamo

[yssuraxu_697]

In this video, I am demonstrating a very simple experiment that it is very possible and indeed very simple.

Very relevant. Did a pic to illustrate.
Guess it will work fine when both magnets are roughly same strength/distance.
(forget the conducting washers romerouk had at first)

[CLaNZeR]

@CLaNZeR

You might want to rethink the small magnets right outside the big magnets, it might become a very weak spot. As it spins, the big neos get very heavy... dont think you would want them come flying around. Besides, the small ones might disturb the magnetic field of the big ones.
As long as the small ones are 45 degrees apart it dont matter where you put them. You just move the hallsensors accordingly.

Hi Erik

Romero had his hall trigger magnets in line with the main rotor magnets as per picture attached.

The reason I have gone for slots is just to make it easier to cutout, rather than mounting on a turntable and drilling every 45 degrees.

The magnets I am using are 5mm x 2mm discs and the slots are going to be 8.5mm deep into the 12mm rotor and about 1mm from the edge, they will have to be press fitted in anyway, so now way will come out.

Thanks for the input/feedback, appreciatted as usual.

Regards

Sean.

[Aphasiac]

I'm a few pages behind but in case no one put this up here's the link for the big video at megaupload:
. . .

Here is Romero's first video available from any of the four below:
. . .

And this is the last one where he is carrying it around.  Available from any of the sites below:

. . .

@ E2M:  Thank you! I just noticed you did this now.

[Staffman]

At one point Romero said that he went through several rotors to find one that worked. Since some replicators will undoubtedly use different magnet sizes and numbers of EM's, I thought it would be necessary to find an equation that could scale Romero's design with these changing parameters. So, I did an analysis of Romero's setup and came up with an equation that anyone can use to calculate the rotor size for different size magnets (or different number of electromagnets).

Radius of Rotor = ((3 * Magnet Diameter * Number of Electromagnets) / (2 * Pi)) + Magnet Radius + 4mm

Radius to Centers of Magnets or Electromagnets = ((3 * Magnet Diameter * Number of Electromagnets) / (2 * Pi))

Be aware that the 4mm at the edge of the disk may be too small for large diameter rotors or rotors of a different material.

If anyone is interested how I came up with this equation let me know, I'll put together a PDF explaining.

[caccr2000]

tengo una inquietud romero utilizo 2 hallsensors y en las foto veo  el 1 hallsensors esta a un lado del rotor dando enteender que el motor esta en repulsion y 2 hallsensor encima del rotor casi al final del iman como dando entender que ese motor esta en atraccion, teniendo dos eventos muy diferentes o me equivoco coloco las imagenes teniendo en cuenta que el rotor gira al sentido de las manesillas del relog