voltage regulator killer - Page 2 - ZX6R Forum
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post #16 of 27 Old 06-22-2016, 01:57 AM
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I'm not new to bikes ive built countless gsxr s and r1/r6 with no problems if there is a odd problem i search then ask i dont want jokes or bs if i did id search jokes im asking for technical advice cause I haven't found the the obvious problems IE stator or voltage regulator or battery ....
Which is why you have been asked if you have a meter, and the manual.

The charging system is pretty simple; you have already replaced almost all the parts involved. Your mechanics may have some idea of what they are telling you -- the fixed magnets in the charging system could have been damaged in a fall. A sharp shock when they are hot will cause them to become weaker.

But you can only tell that, if you have a meter and make the measurement. Output from the alternator with the bike running is going to be in AC Volts. the points you need to make the reading at are identified in that shop manual. That gives you clear guidance on pass/fail.

You will eventually have to develop a table of what has been done and what remains to do.

If the parts you changed did not result in proper performance, then something you missed must be the cause, right? But we don't know without numbers.

This can be identified with Voltage readings, or resistance readings. Unlikely to find the issue with your eyes. -- you might get lucky and find a melted wire, or one that is burnt through.

Typically with these kinds of problems the first thing to do is to remove all of the homebrew modifications on the bike so you have a known baseline to work from.

Let me know if this is too smart ass for you.
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post #17 of 27 Old 06-22-2016, 04:07 PM Thread Starter
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Found the problem the flywheel was demagnetized
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post #18 of 27 Old 06-22-2016, 04:37 PM
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Found the problem the flywheel was demagnetized



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post #19 of 27 Old 06-22-2016, 04:55 PM
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If your only getting 12.5 volts it is your rectifier/regulator. I just replaced my stator and rectifier and I had the same exact problem. It ended up being my rectifier and I got a aftermarket one for 60 bucks. Bike has been running like a champ every since. Hope this helps. I guess I was wrong oh well. That sucks it is the flywheel though that is much harder to replace.
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post #20 of 27 Old 06-22-2016, 05:37 PM
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If your only getting 12.5 volts it is your rectifier/regulator. I just replaced my stator and rectifier and I had the same exact problem. It ended up being my rectifier and I got a aftermarket one for 60 bucks. Bike has been running like a champ every since. Hope this helps. I guess I was wrong oh well. That sucks it is the flywheel though that is much harder to replace.
It's not all that hard... But that's just me.


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post #21 of 27 Old 06-22-2016, 05:43 PM
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It's not all that hard... But that's just me.
Nah I wouldn't imagine it would be that hard, I replaced my stator by myself and that was pretty easy. But the rectifier is just plug and play.
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post #22 of 27 Old 06-22-2016, 05:45 PM
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Yooooooo I'm having a similar problem, how did you figure it was demagnetized? My bike won't charge, it's not the battery and I bought a rectifier and nothing changed. I wanted to assume it was the stator, but the readings I took weren't exact to what the manual said, but it said it could be a little higher reading and be fine (kind of vague).
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post #23 of 27 Old 06-22-2016, 06:42 PM
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Yooooooo I'm having a similar problem, how did you figure it was demagnetized? My bike won't charge, it's not the battery and I bought a rectifier and nothing changed. I wanted to assume it was the stator, but the readings I took weren't exact to what the manual said, but it said it could be a little higher reading and be fine (kind of vague).
What is the voltage reading on your battery when you hook up a multimeter?
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post #24 of 27 Old 06-23-2016, 02:00 PM
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What is the voltage reading on your battery when you hook up a multimeter?
12 and some change, I've even seen 11. It should be 13 and some change when its running right.

Sorry OP not here to thread jack lol
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post #25 of 27 Old 06-23-2016, 02:55 PM
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12 and some change, I've even seen 11. It should be 13 and some change when its running right.

Sorry OP not here to thread jack lol
To me that sounds like a rectifier problem. Most of the time if your reading below 14 volts its your rectifier and anything higher it is your stator, but that's not always the case. Its pretty easy to test the connections if you have a multimeter. That way you know exactly what to buy and replace. Trouble shooting with your paychecks can get very expensive.

I replaced both at the same time, because I heard it is good practice and more often than not when one goes out it will stress out the other part and cause some damage. I hope this helps.

I bought a Ricks stator for 120 and a rectifier from hornetsnest.com for 60 bucks. Both have been working great so far.
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post #26 of 27 Old 03-13-2017, 09:02 PM
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I had the same issues and it turned out to be the fly wheel.
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post #27 of 27 Old 03-14-2017, 07:24 AM
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Wow. Flywheel demagnetizing. This is the first I've heard of that. I can only imagine trying to chase that problem down! I'll have to file this bit of knowledge away!
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