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Did I fry my Compufire?

  • Thread starter Thread starter seano
  • Start date Start date
seano said:
Thanks I'm making some progress w/ all of this info. Just need to read it a few times slowly, maybe even sleep on it, and eventually the lightbulb will go off (pun intended).
Click to expand...

Well yes I understand that intuitively you would think that the R/R should be connected directly to the battery (both + and -). And that would be OK if there was no charging going on as then the battery would be the only source of power and all power would return back to the battery.

But when the bike is running and charging all the current doesn't return to the battery any more it returns back to it's source which is now the R/R. And so the R/R(-) is where the the single point ground needs to be attached.

The main benefit of this is so that the if implemented in one of the fashions described, the wire running from Battery(-) to SPG only carries the battery charging current (only about 3-4 amps) instead of R/R current which is closer to 15 amps.

This raises the charging voltage as measured at the battery because there will be less voltage drop due to contact corrosion.
 
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