Hi Gyula and all
 
 I was trying to cancel the mag field from the backing magnet but didnt worked. Thinking more about the magnet neutralisation and orbo i had this briliant ideea to put in serie the small toroid with the driving coil. The result is succesfull: with a gen coil shorted(maximum lenz)  i have raised the rpm with 20 rpm's and also less curent input. This is good.
 While uploading this video i had another briliant ideea : to put the toroid in serie with the gen coil and a small light bulb; the result also succesfull : 10 more rpm's when finding the sweet spot near the rotor  .
 Here is the video
 http://www.youtube.com/watch?v=F_opz9_AHUo&feature=youtu.be

Hi Marius,

Very good results!   Have you tried putting a small cylinder magnet to the back of the toroid, and also changing the number of turns on the toroid, these are "fine tuning" possibilities.

Gyula

Hi Gyula and all
 
 I was trying to cancel the mag field from the backing magnet but didnt worked. Thinking more about the magnet neutralisation and orbo i had this briliant ideea to put in serie the small toroid with the driving coil. The result is succesfull: with a gen coil shorted(maximum lenz)  i have raised the rpm with 20 rpm's and also less curent input. This is good.
 While uploading this video i had another briliant ideea : to put the toroid in serie with the gen coil and a small light bulb; the result also succesfull : 10 more rpm's when finding the sweet spot near the rotor  .
 Here is the video
 http://www.youtube.com/watch?v=F_opz9_AHUo&feature=youtu.be

Hi Mariu
A guy named Kevin in Vancouver BC Canada ("Journey") is testing a small orbo-type motor very similar to what you are doing and he has some ferrite magnets at 90 degrees to his torroid coils, postioned at the sides of the torroids.....
here is his youtube channel with videos of it:
http://www.youtube.com/user/XoFFoX777?feature=mhee

he says these magnets makes the thing really race up huge in rpms -
I think it is around 70ma draw at 12V and 3000rpm he is gettig which is pretty good performance
.he has the magnets inside a  "T-shaped" PVC pipe that is positoned to the sides of the torroids...
Here is his description of his "helper magnets" setup: (taken from EVGRAY yahoo group from a few days ago message #59996)
EVGRAY discussion board link: http://groups.yahoo.com/group/EVGRAY/

here is Kevin's quote about the magnets beside the torroids;
"About the mags in the tubes ...
The ones in there right now are just plain old weak ferrite mags that
were cheap as Borscht so I grabbed a whole shit load of em. 3/4" and 1"
ferrites that I think are very low grade. So the tubes are just a
plumbing T with a 3/4" inner diameter which the 3/4" mags fit nicely in
there. Unfortunately, I can only get about 18 of those mags to fit in
there due to the other end of the T narrowing slightly. I will just have
to hone that other side out to get more mags in there. The more mags the
faster it goes. You can use just one stack on one drive coil but works
even better when using two on opposite towers. At first you have to find
out which pole of one stack makes the motor speed up. One pole will
speed it up the other will slow it down. So lets say just for example,
the north pole makes it go faster on the 1st tower, then you use the
north pole for the opposite tower. I'm not sure yet just exactly what
is going on but I do know that the inductance value of the coils changes
quit a bit when a magnet is close to the core. With the coil out of the
tower and not connected and a magnet stuck right against the coil, the L
value goes down a lot.
My ferrite cores have an Al value of 18,000 in case anyone is wondering.
The toroids inductance values are very high, 2 are at about 1.1 H and
the 3rd is 1.26 H and the 4th is 1.35 H. I also observed when they are
in circuit and the rotor is spun by hand with the inductance meter
measuring one or all coils L value changes up and down as well. Patrick
told me that this is a problem with the meter ... I'm not convinced tho.
So I have added on occasion a 3rd stack of magnets on the other open
tower #2 where there is still room and it speeds up yet some more. If my
silly pick up coil is moved I can add a 4th stack as well for more speed
I would assume. They also change the current draw. When I was using only
2 drive coils when the mags were applied the current draw would go down
quite considerably. I haven't checked lately what it's doing now that
there are 4 coils. I would imagine its the same.
Using very strong Noe mags produces a more speed but depends on the
diameter of those neos. The same 3/4" neos work better than the ferrites
but need a slightly different placement further away from the towers.
We have to realize that these fields from the external mags are
interacting with the rotor mags as well which could be adding
torque/speed. Cuz whenI use large stronger mags, you can really feel
and hear the extra energy ... it starts to vibrate and shudder, makes
more noise. So I'm sure there is an optimal field shape and strength
that works best for a given coil size and rotor mags size ... all a
balancing act."

Hi Marius,

I would suggest you reduce the 12V battery voltage for reducing input current, perhaps a variable voltage source like an LM317 linear regulator could be useful during the tests.  I know this regulator has a low efficiency but you can always consider real efficiency of a motor setup by considering such voltage regulator always has a stabil voltage output and you can surely measure the current as you have done so far.  This way, by sweeping the output from say 3V to 12V with a normal 5kOhm linear potmeter you can have a good test range for seeing how rpm, current, etc  changes.  Use some heat sink for the LM317 if there is a big difference between the input and output voltage, it has an 1 Amper max output current rating.
Here is a schematic but you surely know this regulator: http://www.electronics-lab.com/articles/LM317/   

Gyula

Hi hoptoad,
    Thanks for sharing! its very informative...

Hi all
Here is very latest pulsed-DC motor coil circuit, with bidirectional mosfets, and pulse-width control too,  plus look at the backemf/recoil collected with the steering-diodes going into 6 caps all at once - next step not shown is to pulse all those caps to a load when caps are disconnected from the drains of the mosfets whenever they hit a load in order to isolate them during the loading event of the caps
 - the load could be a run-cap running the motor in first place....
thanks to Gyula for this, since he told me to try and put the caps neg leg on positive feed to coil and diode to drain...already I had caps neg leg on negative/source, and diode to drain, so this is now doing it both sides of mosfet at once and it doubles the output  - this looks "redundant" but splitting up the caps like this in to six fairly small ones makes it so if all caps hit load in paralell that is 1320uf worth of cap hitiing a load and the caps of this size fill up to 100VDC in a few seconds...already if I pulse a battery into a run cap before every pulse, the run cap needs to be around 850uf at only 12V to run the motor at near same rpms as compared to drawing directly feom battery, so this means it should be possible to loop the motor itself just from the backemf/recoil (!?!!)
here is circuit tested it tonight it works doesnt affect draw to motor while caps fill up.
 

Hi Konehead

Thank you for your latest pulsed-DC motor coil circuit.
The orbo's driving principle is taking too much power; 10 times more than a normal driving circuit. Tried lots of toroids and it is much less efficient.
You know when searching for the hat and find the shoes? Thats what happened today. Got the speed up effect with a ferrite bifilar coil.
Short one winding and at the other one put a load. In my case, connecting 50 leds  is not affecting the rpm. When connecting  12V/5W light bulb rpm goes up and the filament starts to glow

Hey Marius

Is the bifi 2 strands wound together in the same direction, or 2 coils wound in opposite directions? 

Is it speed dependent as to when speedup happens?

Good job! ;]

Mags

Hi Mariu
 
Is that bifi coil that got the speed up, iis it a orbo torroid? I dont think so but just asking I assume it is a regular back and forth wound coil that works as gernator coil...
What is driving the rotor that spins past this bifi gencoil? Is it the orbo torroids?? I wonder if the ineffeciency is sort of being compensated for and that accouts for the speed up? (not likely but idea anyways)
So the bifilar - let me get this straight - one half of the bifilar is "dead" shorted with its leads together, and other half is the load? and loading this other half gives speed up?