Quote from: e2matrix on June 06, 2011, 02:56:39 PM
Thanks teslaalset that's important info and I will assume it is why Romero had to add some small weaker magnets on top of some of the stator magnets to get them closer to equal strength.

Exactly!
The tweaking can be done in varous ways, RomeroUK probably used these additional ferrite magnets.
But in my sims, I simply alter the hight of the bias magnets.
This is probaly why romero used iron washers in the first place, so you can put some non magnetic materials in between while holding the bias magnets in place.

Quote from: nul-points on June 06, 2011, 03:30:15 PM

in the   ROMERO-UK   self-running device,


WOULD WE BE CORRECT IN THINKING THAT THE TWO DRIVE CIRCUITS ARE EFFECTIVELY PROVIDING COIL SHORTING ACTION - OF EACH OTHER - AND WITHIN THEMSELVES?


thanks in advance
np

I think that you tune the motor with the coils shorted.. then replace the short with your load.

conradelektro...   that is a good point but also the first most obvious thing that came to my mind.. so of course i instantly tried everything.. if that were the case in my experience where the slight loading of the coil speed up the rotor, then it would HAVE to be because of a lenz drag, because the increase only took place when a load was present, but a load of a certain size. i had done many tests to see if that were indeed the real culprit.. and i dont think it was.

in fact out of everything i tried, i could not for the life of me replicate that speeding up by any other means..   i WILL say i have had NO LUCK whatsoever with anything related to that since, whether coil shorting or whatever.. i used the coil shorting to feed the front batt and stopped there, but it always produced a lenz drag being that for pulses in time the inductor would really just be a hunk of copper catching "eddy currents", cause thats all it is when its being shorted.

Quote from: Magneticitist on June 06, 2011, 11:20:37 AM
http://www.youtube.com/watch?v=3GktBVbjrKk

this is the closest i have ever come to getting a speed increase under load.

and its a very small load.. same type of rotor arrangement as a lot of these mullers though..

however if you see the vid you can see my gen coil is pretty small in relation to the run coil. and if i direct short the coil, lenz kicks in full effect, BUT if i only draw so much as to light one or two LEDs the rotor actually speeds up a tiny bit as opposed to slowing down when loading the coil in any other location than directly across from the run coil.

i have not figured this out or even replicated it again myself.. but im wondering if theres any relation here to the Muller setup. maybe someone has their gens directly across from their runs so the gens and runs are "almost" sharing the same core with the rotor mags being the defining interaction between them.

Well, could be, that the LED just conducting the current only
in one direction helps to get this effect.
Would be interesting , if you solder 2 LEDs parallel, but each with
a different polarity and use 2 switches, so you can switch the polarity of the
the LEDs to see, if the polarity of the LED has an effect of it.
Also it is hard to see, how your setup is there.
DO you have magnets on both sides of the rotor disc ?
What material is your rotor disc ?
Regards, Stefan.

it should also be noted regarding "tuning under load".

a direct short does not necessarily mean it is identical to the coil drawing the most amount of current possible. a coil can be "loaded" more-so than a self-short. a bulb for example can load a coil much more than a direct short because its expelling energy freely.