Stator Ohms Readings - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 10 (permalink) Old 07-20-2009, 10:51 AM Thread Starter
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Stator Ohms Readings

Have read the manual and it states that the stator cables should have a ohms rating of between 0.3~0.5 ohms
on mine im getting 0.7ohms on each set of yellow wires. would this explain the brake down in the voltage charge being put out by them only reaching 19VAC
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post #2 of 10 (permalink) Old 07-20-2009, 02:04 PM
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I am no electrical expert, but hopefully one will reply soon. I tested mine recently and got .6 ohms on all sets. I have put about 800 miles on since then and everything seems to be working ok. hopefully an electrical guru will chime in soon.

1990 vn-750
metzler 880's
r/r relocated
iridium plugs
ngk plug caps
mf agm battery
ballancer and stator replaced. (Lance328)
Pro Tac Backrest
progressive fork springs
fork seals replaced
2003 kdx 220
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post #3 of 10 (permalink) Old 07-20-2009, 02:48 PM
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More important, check each yellow wire to the engine case. This should be infinite. If not, you found the smoking gun.

Jon

93VN750, under re-construction
vn750.com Member # 828

Rick's Stator and R/R
MF AGM Battery
Coastered
Degoated
Shaved & Jetted
Iridium's
MAC Tapered Staggered Pipes
Battery/Temp/Clock Gauge
Stainless Steel Brake Lines
Dunlop D-404's
23,XXX miles and holding pending gasket change (underway!!!)
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post #4 of 10 (permalink) Old 07-20-2009, 03:59 PM Thread Starter
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Quote:
Originally Posted by 93VN750 View Post
More important, check each yellow wire to the engine case. This should be infinite. If not, you found the smoking gun.

Jon
its fine against the earth check nothing shorting out. really bugging me now stripped everything down. so stator might not be shot but only getting 18Vac from each wire.
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post #5 of 10 (permalink) Old 07-20-2009, 04:06 PM
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Quote:
Originally Posted by vogelrok View Post
its fine against the earth check nothing shorting out. really bugging me now stripped everything down. so stator might not be shot but only getting 18Vac from each wire.
Did you check that with the stator disconnected from the R/R? If not, do so and check it again. If you are measuring 0.7 yellow to yellow and infinite yellow to engine case (not earth or any other metal), then your stator should be good.

When they fail, they either short winding to winding reducing the output voltage or winding to core (engine case) even lower output.

Jon

93VN750, under re-construction
vn750.com Member # 828

Rick's Stator and R/R
MF AGM Battery
Coastered
Degoated
Shaved & Jetted
Iridium's
MAC Tapered Staggered Pipes
Battery/Temp/Clock Gauge
Stainless Steel Brake Lines
Dunlop D-404's
23,XXX miles and holding pending gasket change (underway!!!)
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post #6 of 10 (permalink) Old 07-21-2009, 08:59 AM Thread Starter
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yep disconnected it is infinity reading against the engine case.

so stator must be ok, but only get 18vac from it at the yellow leads when running at about 4000rpm 19vac max.

so could it be the pickup coils not working. ohms reading for wires from pickup coils was 470ohms. so well within the set limits.

just checked battery it seems to be holding a charge so no power lost over the past 4hrs.

i did strip the ignition switch and cleaned all contact points and soldered points. best to remove this from the bike.
whilst i was doing this the headlight bulb lost its outer ring that holds it in place. brought a new one today. now when i oull the fuse for the headlight i can get a charge of nearly 14volts.
so checked the black connector on the back of headlight, looks a little bit burnt. wonder if this could be the problem. its only a little bit burnt on the plastic connector but could this be the whole problem.
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post #7 of 10 (permalink) Old 07-21-2009, 09:15 AM
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The pick up coils have nothing to do with the charging system, they send a signal to the igniter to fire the igntion coil. Your stator readings are low but it's not dead yet, you will have to replace it to correct the charging problem.

What watt bulb do you have for the HL?


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

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post #8 of 10 (permalink) Old 07-21-2009, 10:04 AM Thread Starter
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its a h4 60/55watt.

im leading to the stator to 100% Lance. just wanted to make sure it wasn't anything else first.
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post #9 of 10 (permalink) Old 07-21-2009, 10:13 AM
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Once you install the new stator you'll be around 14.5v and above 50 VAC. Since the voltage does change with the HL fuse removed that means yor R/R is working, Just a dying stator.


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote

Last edited by lance328; 07-21-2009 at 10:36 AM.
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post #10 of 10 (permalink) Old 07-21-2009, 10:18 AM Thread Starter
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nice one cheers Lance for the help. sort of what i came up with that the ohms increase showed more resistance in the line. R/R is a new one

Last edited by vogelrok; 07-21-2009 at 10:23 AM.
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