She died - Page 2 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

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post #11 of 29 (permalink) Old 09-09-2017, 05:18 PM
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There are some easy places you can check yourself. Check around the front neck where the wire harness comes up from the frame and into the headlight bucket.

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post #12 of 29 (permalink) Old 09-18-2017, 06:33 AM Thread Starter
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Wow.... Died again.

Was just this weekend making deals with someone with space and a motorcycle to work on our bikes during this winter to do some things (wire harnass among them). And this morning no luck with starting.

So started with help of my car, worked like a charm. Even started like never before.
After about 4 km riding, died again... called dutch AAA.

There recharged the battery and checked if the thing was charging.... NOT.
So he said: dynamo dead of regulation rectifier dead or maybe both.

Back to you: will a dead RR make this happen? Or is this definately the dynamo? (Should not be over 2 years old). And what is this staor thing I keep reading about in this forum?

Voltage regulators seem pretty expensive here (around 100$)
However, uncle Ali has one as well... https://nl.aliexpress.com/item/Volta...674864212.html

Anyone has experience with this one?

Regards
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post #13 of 29 (permalink) Old 09-18-2017, 09:09 AM
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The stator/rotor assembly is also known as the dynamo, generator, alternator, etc. It's the mechanical portion of the charging system for the bike. The rotor is attached to the crankshaft and rotates along with the engine. It has magnets in it which generate electrical current within the stator. The stator then sends that current to the regulator/rectifier (aka R/R) which then converts it into usable DC current in order to charge the battery.

The R/R is known to be a weak spot on these bikes, and the factory R/R is a very outdated model. You can test if the stator is good with a voltmeter, there is a good writeup somewhere in these forums. If the stator is good you can replace the R/R (or upgrade to a MOSFET/Series style R/R, which is a vast improvement and improves reliability)

Test your stator and let us know how it turns out. If it's still good, you can just replace/upgrade the R/R, as a dead R/R will not charge the bike at all.

If you do, though, DO NOT BUY THAT CHEAP R/R. Get a high-quality one, or else you will be replacing it again or possibly damaging other components.

Earshave+Rejet (38/135) – NGK Iridiums – MCCT Conversion – Slipstreamer S03 Windshield – Custom Extended Backrest – Custom Highway Bars – MOSFET R/R – LED Underglow – Volt+USB In-Dash – Two-Wire & Blue-Wire Mod – Satin Black Engine Paint – Dampers Parts - Jets: Main=99101-393(#132 stock)/Pilot=n424-22 Pilot(#38 stock)
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post #14 of 29 (permalink) Old 09-18-2017, 09:01 PM
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did you check the plug to the rectifier?

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post #15 of 29 (permalink) Old 09-18-2017, 10:54 PM
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Jumping from a running car can cook the R/R.

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post #16 of 29 (permalink) Old 09-18-2017, 11:40 PM
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Quote:
Originally Posted by Spockster View Post
Jumping from a running car can cook the R/R.
can also break your leg,or your arm,or your head...

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Support your local FREEBIRDS MC
1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
I am a BIKER and i'm proud.FREEBIRDS MC CENTRAL NY

lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
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post #17 of 29 (permalink) Old 09-25-2017, 10:27 AM Thread Starter
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Quote:
Originally Posted by OleDirtyDoc View Post
did you check the plug to the rectifier?

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Not yet. I really had no time past weeks (several personal/family issues). And besides I would not know how to ;-) I can use tools and dissamble and assemble things But the elecktronic stuff is kind of little known to me.
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post #18 of 29 (permalink) Old 09-25-2017, 10:33 AM Thread Starter
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Quote:
Originally Posted by ubertalldude View Post
The stator/rotor assembly is also known as the dynamo, generator, alternator, etc. It's the mechanical portion of the charging system for the bike. The rotor is attached to the crankshaft and rotates along with the engine. It has magnets in it which generate electrical current within the stator. The stator then sends that current to the regulator/rectifier (aka R/R) which then converts it into usable DC current in order to charge the battery.

The R/R is known to be a weak spot on these bikes, and the factory R/R is a very outdated model. You can test if the stator is good with a voltmeter, there is a good writeup somewhere in these forums. If the stator is good you can replace the R/R (or upgrade to a MOSFET/Series style R/R, which is a vast improvement and improves reliability)

Test your stator and let us know how it turns out. If it's still good, you can just replace/upgrade the R/R, as a dead R/R will not charge the bike at all.

If you do, though, DO NOT BUY THAT CHEAP R/R. Get a high-quality one, or else you will be replacing it again or possibly damaging other components.
Is this that Mosfet thingy?
SHINDENGEN MOSFET FH020AA REGULATOR/RECTIFIER KIT REPLACES FH012AA | eBay
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post #19 of 29 (permalink) Old 09-25-2017, 10:40 AM
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pull the connector off the r&r and check for corrosion or melting

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ONE RATS ASS GIVEN PER POST
Support your local FREEBIRDS MC
1986/5 Vn700/750 Frankenfook cross eyed bitch "Mellisa Fayhe"
I am a BIKER and i'm proud.FREEBIRDS MC CENTRAL NY

lowered with progessive 412 10" shocks
rejetted for K/N Pods part#rc 2340
sportster seat

'I didn't lose my mind.i gave it away

BRING BACK WOLFIE."Peace and Carrots"RIP
"And I'm free...as a bird"John Lennon Free as a Bird
"I only carry when I have my pants on"Joe Robinson RIP aka Old Dog
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post #20 of 29 (permalink) Old 09-25-2017, 11:26 AM
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That looks like a good MOSFET kit, yes. Roadstercycle is one of the best sellers, but with you being in the Netherlands that ebay link looks like a better option for you (because of shipping costs associated with buying from a US distributor)

Earshave+Rejet (38/135) – NGK Iridiums – MCCT Conversion – Slipstreamer S03 Windshield – Custom Extended Backrest – Custom Highway Bars – MOSFET R/R – LED Underglow – Volt+USB In-Dash – Two-Wire & Blue-Wire Mod – Satin Black Engine Paint – Dampers Parts - Jets: Main=99101-393(#132 stock)/Pilot=n424-22 Pilot(#38 stock)
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