Hey James,
That switching circuit for the proto ZFM is looking good. Today starting the tuning work on the timing wheel and reed switch assembly that will trigger the firing and switching circuit. Looking forward to putting it all together over the next week or so. Appreciate your efforts on replicating the circuit from my crappy pics.
Made a dry run with the ZFM at 12 volts to see if the rotor would auto rotate - nope! Needed to nudge the shaft by hand to get it to move - perhaps a bit too much attractive force on the Neo aligning strip and too much resistance in the bearings. However, by increasing the voltage to 24 volts and then giving a momentary power up to the coils auto rotation was achieved. A modest and major step in this odyssey!
As far as Z's suggestion for inserting an iron core into the coils of this puppy, well it will have to wait until the preliminary proto test work is completed and the data reviewed. Once a baseline is established, then further modifications/options will be considered. BTW the two toroidal coils are relatively easily wound by hand, however making a nice and even looking coil with 4 strands requires some expertise and strong hands - beyond this builder's level of expertise. Next coils will be either 2 strand or single strand. More time to wind, but a better result is likely - a smoother and more consistent coil without the major speed bumps and lumps. The air gap between the rotor and coil windings needs to be as tight as practical. More detail on this at a later date.
Best to all,
Yaro



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