Hi Chal

Yes I am still a bit confused still - you are saying to short at one peaks but "unshort" at other?
How can it unshort if its already been shorted at other peak??

do yoy mean to leave ON (closed)  the short for the whole sinewave??? 

then un-short at next sinewave peak??

sorry I ams ure it is simple I just dont get it...I guess not sure exactly what it means to "unshort"

Maybe you mean have the timing of the openinig of the swtihc be at one peak?
and the closing of the switch at the other peak,
but still wiht very short pulse width;
so one peak is slightly advanced (unshorted-switch opened) to TDC and other is slightly retarded to TDC (shorted- swithclosed)

Hi Kone,

I am not sure if it double latches or shorts and unshorts at the peaks of the wave. I was thinking it was shorting at the lower peak and unshorting at the upper peak because of the flattened out part inbetween. I had the high voltage spikes exactly at the upper and lower peak of the wave. It is more important to interpret or resemble the waveform I posted in the drawing above: one half from peak to peak is flat and the other one is near sine wave. I had exactly this waveform when I had best output using a reed switch. This was also when I had the speedup by shortin the DC output. If we can interpret the flat part as that there is then no magnetic field then there will be no drag at that point. If this is happening when the rotor magnet wants to escape I think this is what we want.

Hi Konehead
0.75 miliseconds=750microseconds right?
i still get drag for 200-150 microseconds. Also noticed that the spikes are not so high when shorting for 200 microseconds

Hi Chal

OK that is what I got when I tested your idea too, with a long pulse widht, you dont have the swtich closed at the peaks, shorting the coil, instead you have it start to OPEN there....(and close on the toehr too is your idea) and I see what you mean now - but I dont think this is good way to do it.
You should in konehead-logic and method,, have ultra-short puulse widht that just shorts at both the neg and pos peaks - all the rest of the time the switch is open..
Now, if you had a coil and motor for it that ACCELERATESS under a shorted load, then that is whole different ball game for sure! - in that case it is probably better to do as you did, leave the coil shorted for very long period, and find good spot to open swithc, if at all, such as filling a huge UF cap which works like a shorted-condition

Hi Mariu
1 second = 1000 milliseconds...microseconds is one-millionth of second (10 to the 6th):
http://en.wikipedia.org/wiki/Microsecond