Stator Failing Symptoms... - Yamaha R6 Forum: YZF-R6 Forums
 
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post #1 of 6 (permalink) Old 05-14-2019, 08:20 AM Thread Starter
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Join Date: Nov 2013
Location: Vancouver, BC
Posts: 37
Bike: 08 R6
Stator Failing Symptoms...

I bought a QS a couple of years ago brand new. Long story short, the QS works when the bike is relatively cold (morning track sessions), after about the second or third sessions, the bike would stutter like crazy (QS cutting engine out) especially under hard acceleration. I had it returned and a new QS unit was sent to me, bike still does the same thing. I know the bike's stutter is due to the QS because once I disconnect the QS, the bike is normal again under all condition. Contacted QS manufacturer and was told that it might be my stator starting to fail when it heat soaks. Again, morning session bike is fine.

My question is: have anyone on here experience electrical issue caused by a failing stator?

I haven't check the stator's voltage or connection yet but will do soon. Battery seems fine, starts are no issue. Bike is a 08 R6 with about 25K kms.

Thanks
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post #2 of 6 (permalink) Old 05-15-2019, 04:20 PM
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Re: Stator Failing Symptoms...

the stator supplies power to the battery to keep it charged and to the electrical system. it's possible they are right but that is unlikely because they either stop supplying power or they don't cold or hot. i've never seen one slow down when it gets hot. in fact, none of my training at the dealership involved heat related diagnosis of the stator.
regardless you need to test it with a multimeter to find out. but usually the bike will not have a good battery anymore when the stator stops working.

Last edited by yamahacrazy; 05-15-2019 at 04:22 PM.
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post #3 of 6 (permalink) Old 05-16-2019, 09:43 PM Thread Starter
Just made this great wheelie.. did you see it?!
 
Join Date: Nov 2013
Location: Vancouver, BC
Posts: 37
Bike: 08 R6
Could it be the rectifier failing?
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post #4 of 6 (permalink) Old 05-16-2019, 10:35 PM
Just made this great wheelie.. did you see it?!
 
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Is this a dynojet quickshifter? If so what are your settings for it? If, when you disconnect the quickshifter is resolves the issue, and it is doing it with a new quickshifter as well, that points me directly to how the quickshifter is set up.
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post #5 of 6 (permalink) Old 05-17-2019, 04:48 PM Thread Starter
Just made this great wheelie.. did you see it?!
 
Join Date: Nov 2013
Location: Vancouver, BC
Posts: 37
Bike: 08 R6
It’s an annitori quickshifter. Talked to them and the settings seem to be okay. It works well when it does work.
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post #6 of 6 (permalink) Old 05-17-2019, 08:21 PM
I eat my R6
 
Join Date: Dec 2014
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Bike: 2008 Yamaha YZF-R6s Stock
Re: Stator Failing Symptoms...

Automatic transmissions in cars can experience shifting problems when there's an engine problem that affects power output. It throws people off because they're looking for a transmission problem when the problem is actually engine related.
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