Quote:
Originally Posted by splocal
OK so twisting the wires does make a difference, the less capacitance the better right  guess its back to twisting and wrapping my coil again. I wonder if I used two trigger wires would I get more power or maybe two power wires would induce more current in the trigger  |
i'm using 2 triggers and 4 transistors at the moment. Adding the second trigger lets me use much much much weaker magnets but i am getting the same speed from the rotor (possibly faster, hard to tell)
it is much easier to start. Using magnets half the size i was using with 1 trigger (they were double stacked but now using just 1 layer) and have increased the gap between stator and rotor to 4 mm (was 1mm) and the sweet spot resistance is higher than i've got the resistors for at the moment! With one trigger the sweet spot was about 600ohms but now i have stuck every resistor i have on the trigger and it is now 2.4kilo ohms but i think the sweet spot is still higher than that.
Since increasing the gap the motor still spins at a several thousand rpm (no tach so just an estimate) and there is NO vibration from the mounting and the motor runs cold and silent.
I think it depends on your machine whether you need 2 triggers or not... i had to add a second one because 1 trigger coil wouldnt power that many transistors on my motor. Tried triple stacking the magnets but the motor didnt run as fast and was very jerky.
EDIT: forgot to mention the trigger coils are connected in series.