Quote:
Originally Posted by BrianATX
With all the battery problem responses I am curious if this is a problem that can also occur when a weak battery is used to start a bike?
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Just because a bad battery was suggested several times as a cause of the problem doesn't mean it's really a problem. If a battery is really weak, it won't crank the engine over. In your case, the battery was plenty strong enough to shear off gear teeth because of the hydro-lock condition.
With respect to the dimming of dash lights in your case, it was not because of a failing battery. Rather, your stalled starter motor was allowing the closest thing to a dead short your battery will hopefully ever experience. The "battery voltage shouldn't drop below 10 or 11 volts during cranking" rule of thumb applies to an engine that can be cranked over in a normal fashion. You had a seriously abnormal condition and the battery voltage dropping (causing the dimmed dash lights) was not unreasonable.