Hello.

I have a zenoah 260 pum. I want to know the inner workings of the pickup coil. Seems the flywheel has three magnets, how are they oriented, alternating polarity? Are there any electronics to handle the timing. Is there a capacitor to store the charge. Is the charge generated in one or two steps. How big is the capacitor, what voltage does it typically reach at what rpm. Is the electronics programmed to a rpm dependent ignition curve. The pulses through the coil has some shape and duration that will wary vith rpm, what is the trigger criteria used by the electronics to achieve consistent timing. When does the spark fire in relation to when the magnets passes the coil.

I guess I will not get answers to all the above questions. An alternative question could be: Are any of the below statements correct?

The flywheel has three magnets. The first set used to charge a capacitor and the second set used by the electronics to immediately discharge the charge through the transformer coil.

The flywheel has three magnets. Both sets charge the capacitor through a rectifier. The electronics has a rpm dependent delay after which it discharges the cap through the transformer.

When writing this I get the feeling the first statement is the most plausible.

Regards Patrik