Quote:
Originally Posted by Weldangrind
Are you saying that pin 7 & 8 are not used?
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Yes, instead of connecting to an exciter/source coil on the stator, the DC-CDI unit is connected to the 12V battery at pin #6. Pin #8 is not used, and pin #7 is either connected to ground, or not used.
I have a DC-CDI unit in my Honda XR650L, and I am
not a big fan of the DC-CDI units.
I prefer the AC-CDI units installed in both my Zong, and my Honda CRF250X.
The DC-CDI units have an internal transformer which boosts the 12V supplied by the battery to charge the capacitor. However, this internal transformer gets hot during operation, and the thermal cycling of this transformer can weaken the solder joints, or damage other components inside the DC-CDI unit.
If the hot engine oil damages the exciter/pulse coil on the stator, it will undoubtedly
also damage the pickup coil and the charging coils of the stator. Therefore, I don't think the DC-CDI unit is more reliable than the AC-CDI unit. Indeed, in my experience, the DC-CDI unit is
less reliable, because of the heat generated by the internal transformer. Therefore, I personally would not convert from an AC-CDI unit to a DC-CDI unit. I would rather replace the stator periodically, or whenever it begins to fail.