Motorcycle Repair: Honda CT 90 chargeing, honda ct90, honda ct70

Question
Hey Mark, Generator puts out 25v ac @ idle, 90v+ ac @ high rpm. Voltage out of rectifier, 17v dc @ idle and skyrocketed with rpm. We have a good charged battery, new rectifier, grounds are good, all wires inspected and terminal ends cleaned.Is that typical ac voltage output for the generator? Seem a bit high for the higher rpm's. Will that high of voltage toast a 25 amp rectifier? Could there be a problem with the generator? We are trying to get the charging voltage to a reasonable 7.5v or so. Thanks for any input you or the other expert guys may have.    Mike

Answer
Hi Mike,

Sounds as if the generator is healthy. I suspect other charging system components are weak or defective. Refer to this question and answer by expert Bill Silver:

http://experts.about.com/q/Motorcycle-Repair-837/1970-honda-ct90.htm


Here's a few CT resources:

Honda CT70 Web Resources

www.oldhonda.com/trail702.htm

www.hondatrail70.com

www.hondatrail70.com/miniBikeBoy.htm



Honda CT70 Web Resources

www.oldhonda.com

www.hondaheaven.org/index.php?name=Sections&req=listarticles&secid=2

www.weightlessdog.com/ct90.nsf


Respectfully,
Mark Shively