Hi Mariu
Looked at your video again - are you using "bidirecitonal mosfets"  - two at once, connected at the gates and source, with switching happeing between the two drains? With 10K "turn off" resistor across the double-gate over to the double-source leads? Cant tell from the video what yoru swithcing is...
also, what I am testing with the series-pairs of coils is a 60hz AC sinewave and the big 16" wide rotor with 8 wide spaced magnets only goes  250rpm, so when you only do .75millisecond pulse widht to coil-short it,  the percentage of the phase for the short is fairly low (one phase zero line to zero line at 60hz is 8.3milliseconds)..so figure I am around 11 or 10% "duty cycle" to a phase in how long to do the coil-short at peak.
But you are goig near 2000rpm, and with 8 magnets in small rotor that is much faster speed - not sure exactly right now but counting both pos and neg peaks you might have near 140hz (?) and your overall phase-lenght of a peak-period migh be only 3 or 4 milliseoncs not sure.... so the percentage of time to have coil short happen within the oveall phase-length would/could need to be shorter still, to be same proportion/ratio as the 10 to 11%..
 

Hi konehead
 -picture with the shorting circuit (hope the ingeniers will not scream at me)

Hi Maruiscivic,
I don't see any driver in your schematic for the MOFSETs, is that's normal? don't you use a 4421 or a 4422?

No driver Khwartz ; (i couldn't find any of 4421 or 4422) and it works fine just like that

hehe, cool cause cheaper and easier  Very thanks for having specified.
I'm not yet ready to replicate the devise but very interested to see where you'll go with, trying to understand what is going on before could be to try myself  So thanks for sharing  (even it's hard sometimes for not english tongue  )

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Here is a link about a vid, but it's about a part of the written comment that makes me much think to what Kone said about "TDC". Hope it could help

Hi Mariu
In the new video, I  will bet you are giving the backemf/recoil of the motor/drive coil "somewhere to go", besides backing itself up on the current pulsed into the motor coil, so it makes for that increased RPM...
Better to put it into DC cap, with a "Steering diode" off the source lead of the mosfet, since then you can pulse that cap out into a DC load (like a battery), to gain additional "normally wasted" power besides also helping the motor coil run better and faster like the AC does....
sothe AC cap makes it run better but i dont know what you can do with it when it fills up...T
That 220000uf cap is WAY too big...Mr Lenz's ghost is enjoying watching you suffer....
its like having a resistance across a small up cap while you try and fill it up and it doesnt work since the coil shorting event MUST  see no resistancw, or very very small resistance,  And the sistanc of cap that size is huge....he effect is snuffed-out like what is happening now when you try and fill a 22000uf cap......I know Romero could fill up cap like that, but he was doing a whole other thing! (not sure what still but it for sure wasnt coil shorting at peaks - if so, he would of told us the 8 days he was posting after it looped before he got threatened...his circuit have nothing to do with it that is for sure)
For the particular coil you are shorting, you need to find a good size cap that fills up fast, doesnt lug rotor and then after finding that out,  go higher and higher in uf value until you see the cap is too big and lugging and/or slow filling time starts to happen....then that is the limits of cap size you will have to work with...
Additional step you need to move up to, is to dump cap to a load while cap is disconnected from the coils (two stage circuit)
that big cap is like having a load on the shorting circuit, on the DC side of the FWBR, all the time, and its not going to work like that....tyr small uf caps on each of yoru 6 coils being shoted, then run them all in paralell to output, after they fill u[, when you get to stage of "two stage output circuit" if you want lots of power happening....
 
 
 
 
 

plyz posted  shematic circuit ...
thanks video...

is the romero driving circuit without the 1n4007.Then you have to find the right capacitor to put in paralel with the coil.
Today i have replaced the transistor with two mosfets. The bemf is so high that i can smell the ozone from the coil's wires and i'm not joking. The caps are charging like never before with the rising rpm and less curent consumed.

Hi Mariu
Are you pulsing your single motor coil with the two "bidirectional" connected mosfets?
they work great to pulse motor coils with too....I think high internal resistance of transistors kills lots of the bemf you can capture, jsut like with coil shorting its a similar thing.
can you try this out?
put a 2nd bidirectional mosfet switch onto just one of the AC legs of FWBR, the connects-disconnects tha tAC leg between the coil, and the FWBR - and with AC legs of this FWBR across the two DRAIN (switching) leads of the motor coil bidiretional mosfets...
Now fill up a big uf cap with DC out of FWBR....
thne find sweet spot in timing of that new 2nd switch on the FWBR so that it turns on-off about 5 degrees RETARDED as compared to the motor coil pulse....(like and ECHO).....have a bit of overlap in the ON-TIME of this 2nd swtich, with the ON-TIME of the motor coil pulse, jsut "BEFORE", and right "AT", and then jsut a bit "AFTER" the time the motor coil swtich OPENS (turns OFF)....so this 2nd swtich is times to catch the backemf RECOIL SPIKE for sure.... add another hall effect to controls this 2nd switch and drift it around abit until you find that sweet spot....this is the best way to take backemf out I think you will see dramatic speed up when you find sweet spot, and you are now filling "larger size" uf size cap without any lugging, and instead speed up.
Also another good thing about this technique, is that it becaomes very simple "two stage" output circuit for the backemf cap...since when that 2nd swtich is OFF, the backemf-cap is also now disconnected from the motor coil circuit...so anytime during the OFF period of the new 2nd swtihc, is when you can dump the cap to a load....
 
 
 

Hi Mariu
Are you pulsing your single motor coil with the two "bidirectional" connected mosfets?
they work great to pulse motor coils with too....I think high internal resistance of transistors kills lots of the bemf you can capture, jsut like with coil shorting its a similar thing.
can you try this out?
put a 2nd bidirectional mosfet switch onto just one of the AC legs of FWBR, the connects-disconnects tha tAC leg between the coil, and the FWBR - and with AC legs of this FWBR across the two DRAIN (switching) leads of the motor coil bidiretional mosfets...
Now fill up a big uf cap with DC out of FWBR....
thne find sweet spot in timing of that new 2nd switch on the FWBR so that it turns on-off about 5 degrees RETARDED as compared to the motor coil pulse....(like and ECHO).....have a bit of overlap in the ON-TIME of this 2nd swtich, with the ON-TIME of the motor coil pulse, jsut "BEFORE", and right "AT", and then jsut a bit "AFTER" the time the motor coil swtich OPENS (turns OFF)....so this 2nd swtich is times to catch the backemf RECOIL SPIKE for sure.... add another hall effect to controls this 2nd switch and drift it around abit until you find that sweet spot....this is the best way to take backemf out I think you will see dramatic speed up when you find sweet spot, and you are now filling "larger size" uf size cap without any lugging, and instead speed up.
Also another good thing about this technique, is that it becaomes very simple "two stage" output circuit for the backemf cap...since when that 2nd swtich is OFF, the backemf-cap is also now disconnected from the motor coil circuit...so anytime during the OFF period of the new 2nd swtihc, is when you can dump the cap to a load....

Hi konehead
right now i'm pulsing the coil with the two bidirectional mosfets. Is hard to me to visualize what you just asked me to try.Can you draw a circuit?
Thanks

Hi Mariu
In the top picture on this page from my site, is the circuit wtih a "AC leg of FWBR 2nd swtich"
http://sites.google.com/site/alternativeworldenergy/pulsed-dc-backemf-recoil-recovery-circuits
in the photo below it, you see 4 brushes, but  this a double-pulse thing going on, you only need 2 brushes really to show concept....this is a bit confusing with the 4 brushes...also circuit of it is underneath photo.
simple experiment I like to do for fun sometimes is run DC pulse motor on 24V and dump DC side of FWBR directly into battery bank of 12V batteries in paralell - no caps at all...batteries for sure get a good charge, and you can get a speed up if you find timing sweet spot, with that AC LEG 2nd switch...
This particular circuit shown at top of page has the AC legs of the FWBR across the motor coil swtihcing itself...not across the motor coils, but sometimes the AC legs work a little better across the coils, rather than the motor coil switching as shown, so experiment with where to stick the AC legs of the FWBR.
functions of S1 and S2 in this simple drawing is what I was trying to explain...S1 is your switch that drives the motor coil pulsing, and S2 is the swtich that connects the backemf/recoil into a cap...
the timing of it is S2 is about 5 degrees retarded to S1 - like an "echo"
since S2 is on AC leg of FWBR, you should use a bidirectional mosfet there, if using mosfets, since it is switching a spikey AC (sort of)  as this switch connects the FWBR..