Charging System
#1
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This is a follow up to a prior thread I started about battery not charging. Anyway, new battery fully charged is in the bike a 2000 Fatboy. I tested the stator and it was putting out around 32 to 40 at 2500 rpm and I tested the regulator the way the book says and following some instructions given to me here and I determined it was bad. So put a new regulator on today and when I start the bike and read the DC voltage across the battery at 2000 rpm it reads 12.84 when I let off on the throttle it drops back to 12.72. So my question is that a normal reading or should it be something much higher than that?
Appreciate any thoughts, I'm stumped.
Louie
Appreciate any thoughts, I'm stumped.
Louie
#3
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#5
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The stator's output is determined by RPM. The regulator is a zener-type diode that is designed to limit output to around 14 vdc. Any stator output below this value is unregulated, anything above gets 'shunted' to frame ground. The regulator has cooling fins to prevent component overheating. It is important that the regulator is properly mounted to provide the grounding necessary for the zener circuit to function properly.
#6
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The stator's output is determined by RPM. The regulator is a zener-type diode that is designed to limit output to around 14 vdc. Any stator output below this value is unregulated, anything above gets 'shunted' to frame ground. The regulator has cooling fins to prevent component overheating. It is important that the regulator is properly mounted to provide the grounding necessary for the zener circuit to function properly.
#7
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#8
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Ensure u have a good meter ground, ie dead short. The stator windings have to be completely insulated from frame ground. Any reading in ohms between a stator lead and frame ground indicates a shorted winding. The output of the regulator can be checked at the battery. U have done that and it sounds like you have a defunct charging system. You have changed the regulator-what's left?
#9
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