Mmm i am pretty sure the coils are giving out pulsed waves not AC

Regarding magnet spacing I can't argue with anything konehead says since he's miles ahead of most of us in motor building but I do recall Romerouk said (or someone here recently stated Romoerouk said) that for this motor the best spacing between magnets is 2.5 times the diameter of the magnets. 

Quote from: e2matrix on June 24, 2011, 02:57:29 PM
Regarding magnet spacing I can't argue with anything konehead says since he's miles ahead of most of us in motor building but I do recall Romerouk said (or someone here recently stated Romoerouk said) that for this motor the best spacing between magnets is 2.5 times the diameter of the magnets.

not sure if you seen romerouk latest/last video where he has magnets one after another on a HD plate. 2.5 size my ass. I have a feeling he is still trying to find out the exact reason why this things works. Maybe he realized the process how to reproduce the results and not why it happens.

Quote from: e2matrix on June 24, 2011, 02:57:29 PM
Regarding magnet spacing I can't argue with anything konehead says since he's miles ahead of most of us in motor building but I do recall Romerouk said (or someone here recently stated Romoerouk said) that for this motor the best spacing between magnets is 2.5 times the diameter of the magnets.

actually after watching several videos i think he wanted to say the other way. The spacing between coils should be aprox 2.5 size of the magnets. So that the flux redirection from the generator coil can atrakt the incomming next magnet

Quote from: konehead on June 24, 2011, 01:44:12 PM
About the scope shot what happens is the front-edge of approaching magnet makes the actual peak, the back edge of magnet makes a sort of negative peak too -  this is seen as the flat-area after the peak,  in those scope shots, where the backedge of manget is reacting to coil and core.
substitute that flat area with another magnet in between of opposite polarity, (N-S-N-S rotor) and you will have AC signal now and that same flat area will instead be opposite polarity peak of sinewave.

Think of the hockey puck magnets instead like a square shaped block-magnets, and of course the leading edge has a pole, and the back edge has its own pole too.
when you drive a rotor magnet around with pulsed coil, its the EDGES of magnet where you to pop the motor coil when coil is centered to them, to have most power....and you can flip polarity of coil and both pull then push rotor manget around once after the other too if you want....
some of this doesnt make sense in mind, since it seems then like with hocky puck magnets you would want to spin them around first befgore mounting in rotor, in order to find how the magnet was "cut" to find those poles that go sideways, but this doesnt really work out if you try it... I think the flatsurface in hockeypuck magnets jsut overhwhelmes everything else is reason but dont know for sure...but at same time, those edges is where the power peaks are...

If you want an AC-signal run MOTOR in Muller flat-rotor configurations, make your rotor magnets same distance apart measured edge to edge as the width of your magnet, and any AC signal will hit the magnets push-pull-push-pull...this must be done with ALL N magnets or all S facing magnets...if N-S, now then it gets out of synch with AC fed signal runnign it as motor..
In this equal-spaced configuration, a rotor of only two magnets both facing N, will run at 1800rpm on 60hz signal as an example...
I have made quite a few motors like this  - its fun to run something with "no switching" just AC sinewave spinning it...most of time the motors draw goes down under loading of the shaft too - but no speed up since its runnign on constant AC signal speed.
Who knows maybe Romero has taken advantage of this (doubt it but could be) in his all-N rotors somehow and there is motor-effect happening maybe from the backemf but doubt it just more wild guessing...

With N-S-N-S rotor magnets, you can make a good AC sinewave, and be able to run stuff with it too, like AC induction motors (rotovertor - have done this alot too),  but you have to experiment with core size and coil widths and spacing  and rpms to make a perfect looking sinewave (squarewaves or edgy-peaked squarewaves run rotorvertors fine however).

Usually aircores with N-S mangets will show that double-hump "edgy" square wave, with peak sagging in middle, since the very center of rotor magnets to the very center of magnet is sort of like eye of hurricane and it is the EDGES of magnets that have the peak-power.

With cored-coils this is different, you dont get the sag so much but everything depends on eveyrthing like rpms and coils size and core size and spacing for what your scope shows.

This explains what you described.