You bring up a good point. Your OB has a Ring of coils, with a set of magnets whirling outside the poles of the Coils.
Exactly almost the same as an Ign Coil.
Normally to do what I want to do an Engineer would make a coil or set of coils inside the flywheel magnet with a narrow air gap.
I'm trying to Engineer an induction system to an engine that had none! It cannot charge a battery, just makes a big Spark.
It's a booger of a problem because there is speed involved.
If I made a coil around a very light but spring loaded Needle valve, I could pull the Needle shaft up with very little voltage. But those small voltages take time to develop.
At 3500 Rpm, the Needle would need to pulse 1700 times per minute and lift .030 for 250ms on each pulse.
At Idle (800Rpm) it would pulse 400 times a minute but only pull up the same .030 for 50ms.
You can see why I came to you guys for help. That's a lot of figgerin!