Avidtraveller
CB750 New member
Been having charging issues lately, and it seems to be the rotor, and I'm wondering what has killed two of them so far... Here's a rundown of the issues:
-new battery late last year, rode it about 200km total before parking it over the winter (with trickle charger on occasionally)
-wasnt charging at the beginning of this season, voltage across the battery at idle was ~11.6 And dropping
-replaced regulator/rectifier early May of this year, issue persisted
-checked brushes, still lots of life on them and no continuity issues
-metered 0.4 ohms across the slip rings of the existing Rotor, which research led me to believe was way too low.
-new rotor arrives, meter 4.5 ohms across the rings. Much better!
-after much struggling, get the old one off, new one on, meter 12.6V across battery @ idle, rising to 14.5v @5000 rpm and holding steady. Great!
-rode it about 4-5 times over the last two weeks (~200km total), and it dies on my commute home.
-check the rotor again, and the new one is now down to 0.4 ohms as well.
Is there anything can can cause a brand new rotor to fail that quickly? Could it be heat buildup? Did i just end up with a faulty new part? Keeping in mind the Reg/Rectifier was changed at the same time. I know I need to replace the rotor again, but I don't want to just replace a $200 part without sorting out the root cause.
Any ideas?
-new battery late last year, rode it about 200km total before parking it over the winter (with trickle charger on occasionally)
-wasnt charging at the beginning of this season, voltage across the battery at idle was ~11.6 And dropping
-replaced regulator/rectifier early May of this year, issue persisted
-checked brushes, still lots of life on them and no continuity issues
-metered 0.4 ohms across the slip rings of the existing Rotor, which research led me to believe was way too low.
-new rotor arrives, meter 4.5 ohms across the rings. Much better!
-after much struggling, get the old one off, new one on, meter 12.6V across battery @ idle, rising to 14.5v @5000 rpm and holding steady. Great!
-rode it about 4-5 times over the last two weeks (~200km total), and it dies on my commute home.
-check the rotor again, and the new one is now down to 0.4 ohms as well.
Is there anything can can cause a brand new rotor to fail that quickly? Could it be heat buildup? Did i just end up with a faulty new part? Keeping in mind the Reg/Rectifier was changed at the same time. I know I need to replace the rotor again, but I don't want to just replace a $200 part without sorting out the root cause.
Any ideas?