Have you checked the AC voltage from the stator, between the wires coil wires not wire to earth? There is no earth connection in the stator
Many test the resistance of the stator coils and assume the stator is fine because the measurements are correct. I have seen mechanics replace regulator/rectifiers when the problem was the stator insulation breaking down load.
The insulation can break down under load and end up giving out only a couple volts ac instead of about 30v AC at idle and rise to over 60v AC maybe up to 90v AC at around 5000revs.
Unfortunately I do not know the measurements for the CBF.
Do the CBFs also suffer from cracked rotors like some of the other Hondas?
Locate the plug coming from the stator, there will probably be 3 wires of the same colour in it. Set your meter to over 100v AC. Remember you are check for AC voltage no DCPush the meter leads into the back of the connectorsstart the bike and check the voltage now rev it to about 5000 and check the voltage again.
This needs to be done 3 time to test the 3 coils.
Now do it with the heated grips switched on. If possible do it when the bike is warm as the insulation is more like to be a problem then
Many test the resistance of the stator coils and assume the stator is fine because the measurements are correct. I have seen mechanics replace regulator/rectifiers when the problem was the stator insulation breaking down load.
The insulation can break down under load and end up giving out only a couple volts ac instead of about 30v AC at idle and rise to over 60v AC maybe up to 90v AC at around 5000revs.
Unfortunately I do not know the measurements for the CBF.
Do the CBFs also suffer from cracked rotors like some of the other Hondas?
Locate the plug coming from the stator, there will probably be 3 wires of the same colour in it. Set your meter to over 100v AC. Remember you are check for AC voltage no DCPush the meter leads into the back of the connectorsstart the bike and check the voltage now rev it to about 5000 and check the voltage again.
This needs to be done 3 time to test the 3 coils.
Now do it with the heated grips switched on. If possible do it when the bike is warm as the insulation is more like to be a problem then