All you really need to do is figure out whether you're using more watts than your charging system can supply (on average) - if so, you're in trouble, if not your OK (subject to the amount of starting you do). Measuring voltage at the battery is essentially a proxy measure to determine whether the charging system has enough juice to charge the battery.
Basically, your battery's a bucket you trickle a hose into (charging) and pour out of (starting) plus a few steady leaks (ignition system, lights, etc).
PS you want about 5,000 rpm to take a meaningful charging voltage at the battery.
"Rally racing makes heroin addiction seem like a vague craving for something salty!"
(Apologies to Peter Egan)
The appropriate number of cylinders for any motorcycle is two.
Billy.B.F. screwed with this post 11-15-2010 at 02:47 AM