help with stator charging system problems please - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 12 (permalink) Old 06-20-2012, 06:18 PM Thread Starter
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help with stator charging system problems please

Hello,

Here is a little insight on my ongoing saga with my 2001 VN750.

I had bad stator. Pulled the motor and replaced stock stator that was burnt up with an electrosport industries stator and a new R/R. Right after the install I was reading good output at the battery 14v+ at around 3000 rpm. All seemed to be good. I took the bike on a long ride about 100 miles and then as I was nearing home the bike died and the battery was dead. Put my spare battery in and it fired right up and I rode the bike the rest of the way home. The next morning I got up and started the bike and checked it to see if I was getting any charge and it was reading just under 14v. So I took it for a ride and again it died on me and the battery was dead. Got the bike back to the house and started testing again this time I am getting no charge at the battery. I tested the stator output and was getting only 12-13vac son two phases of the stator and .333vac on the third leg of the stator.

Anybody have any ideas about what might be happening? Did I just get a faulty stator? Or is there something that is causing the stators to go bad?

Please help

Thanks
Chris
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post #2 of 12 (permalink) Old 06-20-2012, 06:34 PM
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There have been cases when an electrosport stator was bad out of the box.

Verify your wiring is OK, and I'd have Tim Parrot rewind your stator.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #3 of 12 (permalink) Old 06-20-2012, 07:13 PM Thread Starter
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What wiring should I check exactly? I have checked wiring to the R/R. all the wiring tones out fine to the R/R. I checked the voltages from stator at the bullet connectors on the wires coming from stator.
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post #4 of 12 (permalink) Old 06-20-2012, 07:22 PM
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Quote:
Originally Posted by 4sound2mix0 View Post
What wiring should I check exactly? I have checked wiring to the R/R. all the wiring tones out fine to the R/R. I checked the voltages from stator at the bullet connectors on the wires coming from stator.
I was just thinking generally, for shorts, cuts, clean connectors.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #5 of 12 (permalink) Old 06-20-2012, 07:35 PM
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Did you replace the R/R? It's a system, stator, R/R, bat. One can effect the others and cause them to fail as well
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post #6 of 12 (permalink) Old 06-20-2012, 07:51 PM Thread Starter
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I changed the stator, R/R, and the battery.
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post #7 of 12 (permalink) Old 06-21-2012, 09:22 AM
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you need to test the stator outputs when cold AND when warmed up.....

It could be testing OK cold and then develop a short when the wiring gets hot internally on the stator.

I can't tell you exactly what voltages or resistances you should see since it may not be a stock stator.
The resistance should be similar on all 3 legs hot and cold.
The VAC output on each lead should be similar hot and cold
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post #8 of 12 (permalink) Old 06-21-2012, 09:23 AM
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AS THtanner suggests clean all the electrics first and check for something shorting out, bad grounds and loose wires don't go well with these bikes, once you have cleaned all the electrics put some di-electric grease on them to keep crud out, then check the charge again.
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post #9 of 12 (permalink) Old 06-21-2012, 02:29 PM Thread Starter
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So at this point I know that the new stator is bad.. Back to my original question... Is there something that could be causing the bike to burn up stators? Shouldn't the stator be isolated electronically from the rest of the bikes wiring by the rectifier circuit meaning that a short in the wiring elsewhere on the bike shouldn't affect the stator?
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post #10 of 12 (permalink) Old 06-22-2012, 04:11 PM
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Quote:
Originally Posted by 4sound2mix0 View Post
So at this point I know that the new stator is bad.. Back to my original question... Is there something that could be causing the bike to burn up stators? Shouldn't the stator be isolated electronically from the rest of the bikes wiring by the rectifier circuit meaning that a short in the wiring elsewhere on the bike shouldn't affect the stator?

Quote:
Originally Posted by 4sound2mix0 View Post
Hello,

Here is a little insight on my ongoing saga with my 2001 VN750.

I had bad stator. Pulled the motor and replaced stock stator that was burnt up with an electrosport industries stator and a new R/R. Right after the install I was reading good output at the battery 14v+ at around 3000 rpm. All seemed to be good. I took the bike on a long ride about 100 miles and then as I was nearing home the bike died and the battery was dead. Put my spare battery in and it fired right up and I rode the bike the rest of the way home. The next morning I got up and started the bike and checked it to see if I was getting any charge and it was reading just under 14v. So I took it for a ride and again it died on me and the battery was dead. Got the bike back to the house and started testing again this time I am getting no charge at the battery. I tested the stator output and was getting only 12-13vac son two phases of the stator and .333vac on the third leg of the stator.

Anybody have any ideas about what might be happening? Did I just get a faulty stator? Or is there something that is causing the stators to go bad?

Please help

Thanks
Chris
you answered your question your self...

Electrosport Stators don't last very long on our bikes... I don't have enough fingers and toes to count all the failed Electrosport Stators reported on this forum alone. that is why it is highly recommended to use TPE stators.
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