VERY STRANGE Stator Problems YET AGAIN! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
Includes Electrical mods, Lights, Stator,
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post #1 of 11 (permalink) Old 06-19-2016, 10:53 PM Thread Starter
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VERY STRANGE Stator Problems YET AGAIN!

oK I Have had a ongoing Stator/charging problems.This is the second one i have put into the bike.The first one worked for like 3 days then stopped. Got a replacement that i ohm out before putting it in. i got 0.5 across all leads A to B, A to C, B to A,B to C so one and 0.5 to ground. i installed it it has worked for almost 3 weeks. I was getting 13.5 at the battery.All was good until Friday i was headed home from work and noticed that my digital volt gauge was not hitting 13.0 at best it was hitting 12.5. So i when i got home i did a retest on the stator and got the Same readings as before i installed it.Without load other than what was required to run the bike the best voltage i got was 13.0 at high rpm and only 12.5 with all load Lights so on. I checked the AC output from the stator and got 20.0 on 2 of the 3 the 3rd was like 9.0. Ok now for the really weird part as i was testing the volts at the battery and i kept hearing a kind of growling grinding sound it Sounded to me like gears meshing with out oil that type of sound. You could also FEEL it if you laid your hand on the outside part of the stator cover plate. So i broke it back down removed the stator and checked to see if there was any sign of rubbing on the stator or the drum the stator rides inside of and they Were fine no sign at all of rubbing on either.So i reinstalled the stator buttoned every thing back up and STILL same sound and can still feel it if you place ya hand on the cover.BUT the noise stops and you can feel nothing when the stator is unplugged! Any ideas ??

89 750 Vulcan(Heavy Performance Mods "Tresia Ann"
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post #2 of 11 (permalink) Old 06-19-2016, 11:07 PM
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Does the stator have continuity to ground? If so, wonder if the sound you hear is it arcing against the case? Amazing that the sound disappears when you disconnect the stator.

Cheaper (aka not OEM or TPE rewind) stators have lower quality coating and it fails quicker, or immediately.

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
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1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #3 of 11 (permalink) Old 06-19-2016, 11:18 PM Thread Starter
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Everything tests out fine
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post #4 of 11 (permalink) Old 06-20-2016, 08:34 AM
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Quote:
Originally Posted by Bane View Post
oi got 0.5 across all leads A to B, A to C, B to A,B to C so one and 0.5 to ground.
the way I read that, is 0.5 ohms across all legs (which would be correct), AND 0.5 ohms to the metal frame (ground)??

if so, that was bad when you put it in

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post #5 of 11 (permalink) Old 06-20-2016, 09:23 AM Thread Starter
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NO SORRY i miss typed there i got 0.00 to ground

89 750 Vulcan(Heavy Performance Mods "Tresia Ann"
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post #6 of 11 (permalink) Old 06-20-2016, 10:29 AM
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ok, 0.00 would still be bad..

should be open circuit (infinite) from any leg to ground
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post #7 of 11 (permalink) Old 06-21-2016, 10:47 PM Thread Starter
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IM sorry maybe i didn't put my question across the right way..... i understand the stator has gone bad that was easy to figure out when it started putting only 12.5 v/dc to the battery. i am asking more of what could be causing it to eat them so fast? and that noise after i thought about it i know a perfect match to the sound i hear...... the same sound a A/C compressor makes on a car when the clutch is activated. but the noise is constant on the bike. and 0.00 ohms on my meter means its infinite as it should be .

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post #8 of 11 (permalink) Old 06-22-2016, 08:30 AM
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I have NEVER seen an ohmmeter that reads 0.00 for infinite resistance... and I have been in the electronic/electrical field doing service for nearly 45 years...

0.00 ohms resistance means just that.. zero resistance.. not infinite.

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post #9 of 11 (permalink) Old 06-22-2016, 01:46 PM
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Reasons for stator failure:

- Buying a cheap (non OEM or TPE rewind) stator. They're pretty much all crap and can fail at any time.
- Excessive heat (under-filled oil)
- Protective coating on winding damaged during installation

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 #10 of 11 (permalink) Old 06-22-2016, 03:09 PM
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Quote:
Originally Posted by thtanner View Post
Reasons for stator failure:

- Buying a cheap (non OEM or TPE rewind) stator. They're pretty much all crap and can fail at any time.
- Excessive heat (under-filled oil)
- Protective coating on winding damaged during installation
Not sure that post is worded right.... TPE rewind is a good stator, the best I'd say.

Rick's, Caltric, etc. buy two, you'll need them both.

The Two Wire mod can cure certain charging problems, but the stator has to be working first.

My ohm meter reads OL when there's no continuity.

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