Thane Heins Perepiteia.

[i_ron]

Hello Ron

last word around the drum rotor idea .I enclose a picture of an other electric motor which is called "out runner" as the magnet are glued inside rhe rotating external drum-rotor ...see the ventilated laminated core between the coils

hope this helps

cheers

Laurent

Yes Laurent, very interesting and very helpful.The "out runner" in particular... who makes this?
Are the coils on any sort of core or is that core in between the coils the only one? Fascinating.
Can you give me a rough idea as to how big the rotor is?

Thanks,  Ron

[Yucca]

@Sparks,
Do you think this one toroid idea would stand a chance of working. I wonder if high spec components would give low enough impedance to make the highV coil do it's magic?

Edit: I wonder if these solid state ideas are clogging the Perepetia thread, maybe a new thread should be started for solid state versions like bitoroid etc?

[woopy]

high Ron

this motor is a BIG REX from a german producer (Flyware)

i got this one after one year of insisting and i don't know if they produce it any more but there is a lot of  brushless outrunner producer in this world. Look also with Google for "torque motor" perhaps you find something almost ready to use.

here  the answers to your questions , plus a picture of an original Lynch rotor

this is the same laminated core in and out the coils .This is a stack of  discs with slots to insert the coils. It seems that the cores outside the coils interacts with the magnets. They probably contribute to guide the flux to magnets next to the coil... but i am far from beeing an expert and may be wrong .

cheers

Laurent

[Yucca]

@Woopy,

WOW! big outrunner, here's my smallest outrunner:

[sparks]

@Yucca

   
       I think that it will be tricky to get the output circuit to look like a dead short.  The hv coil current needs to do two things.   One is desaturate the exciter torroid core.  This is the push that Thane is seeing on his rotor.  The other is to drive the load torroid.   Any voltage drop or impedance is going to be tricky.  The load output is going to have to be magnetically close coupled to the pulse from the exciter hv winding.  Otherwise the high voltage coil on the exciter is going to see the ouput primary coil as impeded and not truly a short circuit.  This will result in alot of current draw from the input as the exciter core will saturate before the signal has returned to O potential on the next input.  Of course this whole process can be actively controlled with core saturation feedback signals and pulse width modulation  etc.  As it is this circuit needs to be run at full load to work right therefore requiring feedback and input pulse regulation in response to load demand.