Evobobber wrote: Problem solved. I got a new reg rect, done some tests and compared the old and new one. Looked like the readings with the old lack wire were suspect.
Put new one on and now it's working as it sould. A long test ride for me this weekend.
Thanks for the input and advice / help. Cheers
Good job.
What is the DC charging voltage at the battery at 4000rpm?
My 750 is very similar to your 650 but the charging system is 3 phase. The AC voltage from the stator was 75 VAC but the DC charging at the battery was still only 13.7 V until I got a new stator. The R/R was good. After replacing the stator the charging was back to normal at 14.5 VDC at 5000 rpm.