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FJR Motorcycle Forums
Technical & Mechanical Problems
How to check R/R voltage on a Gen II?
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<blockquote data-quote="Fred W" data-source="post: 1313946" data-attributes="member: 3828"><p>Yeah, sorry... it doesn't quite work that way.</p><p></p><p>As long as the output voltage from the alternator is higher than the battery internally stored voltage, all of the electric power (current) for running the bike and accessories is coming from the alternator and bypassing the battery altogether.</p><p></p><p>But it doesn't really matter. You have the right idea. The net current in and out of the battery is zero, but the net current from the alternator is whatever the load requires.</p><p></p><p>The second Gen alternator is capable of producing 590 watts, which is roughly 42 amps at 14VDC. I would want to have a bigger than 30 Amp circuit breaker in series with my alternator if I were to do that mod.</p><p></p><p>For the record, in the stock wiring configuration there is no circuit breaker or fuse in series with the full load current from the alternator. The loads split into separate fuses before they head off to the various loads.</p></blockquote><p></p>
[QUOTE="Fred W, post: 1313946, member: 3828"] Yeah, sorry... it doesn't quite work that way. As long as the output voltage from the alternator is higher than the battery internally stored voltage, all of the electric power (current) for running the bike and accessories is coming from the alternator and bypassing the battery altogether. But it doesn't really matter. You have the right idea. The net current in and out of the battery is zero, but the net current from the alternator is whatever the load requires. The second Gen alternator is capable of producing 590 watts, which is roughly 42 amps at 14VDC. I would want to have a bigger than 30 Amp circuit breaker in series with my alternator if I were to do that mod. For the record, in the stock wiring configuration there is no circuit breaker or fuse in series with the full load current from the alternator. The loads split into separate fuses before they head off to the various loads. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
How to check R/R voltage on a Gen II?
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