MOSFET VS SERIES - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
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post #1 of 52 (permalink) Old 01-13-2015, 11:50 PM Thread Starter
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MOSFET VS SERIES

I am researching series regulators and they seem the be the best replacement for the VN750. Even the mosfet is a shunt type, so the stator is producing full output 100% of the time. So the heat built up in the stator is not changed from the installation of a mosfet. The Series type controls the output so the stator only generates what is needed. I have not found a reliable source to learn the wattage of a stock stator. The only number I found is that it produces 20A. Amazon has 22A series regs for $90, 32A for $112. Mosfet shunt type is $40 + shipping. Seems for a extra $40 the series would make the stator last much longer only producing the heat (power) as required by electrical system. Seems the extra $40 for only replacing it every 60K miles would be worth it.
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post #2 of 52 (permalink) Old 01-14-2015, 07:46 AM
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Explain to me how the stator gets "turned off" by the R/R. Isn't it always producing volts as long as it's spinning?

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post #3 of 52 (permalink) Old 01-14-2015, 07:55 AM
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It doesn't get shut off. The r/r communicates with the stator differently... It probably always takes 14v and puts it in the battery, and does magic to get rid of excess energy
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post #4 of 52 (permalink) Old 01-14-2015, 08:57 AM
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Yup,as long as the stator is spinning it is producing energy. We all know the rectifiers job is to deliver the energy to the battery / electrical system as needed and to discard what's not needed. Both style rectifiers do the same job in different ways. Everything I have read the MOSFET runs cooler and from experience I know it runs cooler and more efficient than the old style.
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post #5 of 52 (permalink) Old 01-14-2015, 10:11 AM
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The question becomes - where does the extra electricity go?
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post #6 of 52 (permalink) Old 01-14-2015, 10:55 AM
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Quote:
Originally Posted by crowley1027 View Post
The question becomes - where does the extra electricity go?
Nardia

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post #7 of 52 (permalink) Old 01-14-2015, 11:36 AM
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Narnia?
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post #8 of 52 (permalink) Old 01-14-2015, 12:14 PM
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To Ground, all do eventually and you can't regulate stator output on this system nor most motorcycle engines with a few notable exceptions. Engine rpm dictates stator output. Different style regulators deal with it differently but with a fixed winding in the middle of a rotating permanent magnet, voltage output of the stator is completely at the mercy of RPM. Just the Facts




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post #9 of 52 (permalink) Old 01-14-2015, 12:45 PM
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Some older Suzuki' s route it back to the stator(2 phase regulator like my gs 650 has)and submerge the stator in the engine oil keep it" cool"

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post #10 of 52 (permalink) Old 01-14-2015, 12:49 PM
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I as many found the mosfet did a more efficient job of lower rpm power output. Hence, one of the desires to upgrade.
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