You may have fried it. So goes the experimentation process. Hate to think of all of them I've fried. Thats why I buy in bulk .
Jason

Ren,
Would it be helpful if I make a video showing the beginning to end process of putting together the motor you are working with using one transistor and some diodes. I would be happy to.
Jason

Ren,
I can run my coil with no moving magnets, and I get a high pitched sound from the coil resonating. This only happens if my trigger coil does have enough resistance, which can be solved with a resistor inline with my trigger coil.
Jason

well, i broke my coil. broke off the trigger coil wire. , time to rewind another coil. this might take awhile.
Jason

that sucks. I must have stolen your luck cause my halls just arrived. Used with transistor and fired up first time. Awesome. Can I hookup to collector and emmiter with diodes like your diagram to capture back emf? Hookup is like so.