Motorcycle Repair: Alternator not charging, carbon brushes, honda motorcycle

Question
I have a 1982 CB 900C Honda Motorcycle with less than 14,000 miles on it and the alternator does not charge.  I put a volt meter on battery and I am lucky to get above 11 1/2 volt with engine revved.  I have replaced rectifier regulator which did not help.  I removed statter and cover, brushes are fine and I put 12 volt to rotor and I do have magnetizm.  I have tried a new battery with no luck.  I have a manual and I've done tests according to the manual and I just can't find the problem.  Statter seems OK from what I can tell.  I've traced every wire that I can find.  Are the 900's known to have trouble with the charging system?  If so, do you have any suggestions.

Thanks,

Tim Kappes
kappes@gte.net

Answer
Hi Tim,

If the alternator's (stator) carbon brushes are within service limits, and the Reg/Rec tested ok, then the alternator is defective.

Visit Electro Sport's website and follow their Fault Finding Chart:

https://www.electrosport.com/electrosport_fault_finding.html

Respectfully,
Mark Shively