What's your stator got? - 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 #1 of 69 (permalink) Old 04-29-2016, 02:13 AM Thread Starter
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What's your stator got?

I could use all of the data possible among the crowd regarding their working stators. If any of you would like to pitch in and help and test your stator at the same time, i'd certainly appreciate it. It should only take a couple minutes. Thanks in advance.

Test requires a voltmeter with VAC 100 or better. If yours is manual, set the dial to at least 100 VAC. You might also need a helping hand to hold the throttle, or at least some alligator clips.

Procedure:

Get a pencil and paper and make a little form for yourself:

Idle: ____ rpm

wires 1-2: ___ vac
wires 1-3: ___ vac
wires 2-3: ___ vac

2000 rpm

wires 1-2: ___ vac
wires 1-3: ___ vac
wires 2-3: ___ vac

4000 rpm

wires 1-2: ___ vac
wires 1-3: ___ vac
wires 2-3: ___ vac


  1. Unplug the three yellow stator wires under the tank near the rear ignition coil. Make sure they keep the ends from touching the chassis or each other.
  2. Pick any of the three wires and name it "1". Put a mark on it.
  3. Pick any of the other two wires and name it "2". Put two marks on it.
  4. The unmarked wire we'll name "3".
  5. Start the bike.
  6. Read the tachometer and record your idle RPM
  7. Measure the vac across wires 1 and 2 and record the reading.
  8. Measure the vac across wires 1 and 3 and record the reading.
  9. Measure the vac across wires 2 and 3 and record the reading.
  10. Rev the bike to 2000 rpm and record all three measurements.
  11. Rev the bike to 4000 rpm and record all three measurements.
  12. Turn off the bike before reconnecting the wires.

Post your results here in this thread. You can copy/paste the form i made above to save you some hassle.

The results will be used in research and development of a better/cheaper regulator mod that people can build themselves.

Thanks again

1987 VN750 California - "Lydia"
Reupholstered leather seat w/matching lockbox.
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Relocated R/R
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post #2 of 69 (permalink) Old 04-29-2016, 02:30 AM
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I do not understand all the tech jargon about electrical topics, but wonder if you have seen this thread RH?
https://www.vn750.com/forum/19-electr...res-notes.html
The mosfet r/r seems to have solved the low voltage charging problem many vn750s experience.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
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July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #3 of 69 (permalink) Old 04-29-2016, 04:03 AM Thread Starter
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Quote:
Originally Posted by OlHossCanada View Post
I do not understand all the tech jargon about electrical topics, but wonder if you have seen this thread RH?
https://www.vn750.com/forum/19-electr...res-notes.html
The mosfet r/r seems to have solved the low voltage charging problem many vn750s experience.
Hey Hoss!

Yups, i read that thread quite awhile back.

Here's a couple of jargon notes for you:

A transistor is a rock crystal that a bunch of guys grew like a sugar-cube in a lab. Except they use silicon instead of sugar. That's all it is.

MOSFET is a rock crystal too, but it uses Metal Oxide instead of the old type of sugar.

Here is the difference between them. About 20 years of guys working in labs figuring out how to grow rocks.

The OEM regulator is 1960's technology.
The MOSFET is 1980's technology.

Now that means if you put a MOSFET regulator in your bike, you are more than likely missing out on 30 years of work that other people already did.

And here is the kicker.... the amount of progress of electronic technology that occurred between the 20 years of 1960 and 1980 is staggering. Be that as it may be, the 30 years between 1980 and 2010 saw four times as much technological advances in the same industry.

So now think about it this way... if MOSFET did such a great job with only 20 years of technology, then can you imagine what another 30 years would do? ( or 80 years, depending how you look at it ).

And the MOSFET is still using that big old heatsink and putting a strain on the stator and the engine when it don't need to do so....

It should make sense to replace that old thing with something about 1/4 the size that doesn't generate any heat worth noticing, and frees up the stator when it's supposed to ( which means more horsepower to the drive train ), right?

Ever heard of a thumb-drive? Back in the 80's we called them "rooms".


Hope this helps

1987 VN750 California - "Lydia"
Reupholstered leather seat w/matching lockbox.
Rebuilt battery cage
Relocated R/R
AGM battery
Murican MCCT
Redesigned Rear - LED Tag/Signals/Harness
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post #4 of 69 (permalink) Old 04-29-2016, 12:55 PM
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RoadHopper, honestly, you're putting a lot of effort into something that doesn't need another solution. Yes it's 1980s tech, but it works.. GREAT. It works so great every motorcycle manufacturer, from the Japanese to the Italians, use MOSFET regulators. Italy LOVES to throw money at stuff, so if there was something worth while doing, they would have done it for kicks on something that's $60,000.

I think you should add an external alternator if you want to improve charging on your bike. Stators, oil supply, and heat are the weak spot, not a MOSFET.

Not sure how you're going to beat a $20-30 mosfet regulator off eBay with a DIY application, either. The time involved will negate any savings, and I don't see any way it's going to improve charging so much that it'd warrant it.

I know projects are fun but sometimes you need to take a step back and look at the big picture.

I'd start by making simplified wiring harness. Rip out the junk, use quality thicker gauge wire composed of thin stranded copper. If you are unhappy at that point with the mosfet, then look at it.

I'm not trying to discourage creativity, just maybe the effort should be redirected elsewhere..

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 69 (permalink) Old 04-29-2016, 01:20 PM
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He likes reinventing the wheel.


Seriously if I spent that much time working on my bike I'd toss it off a cliff and get another one.....

"The results will be used in research and development of a better/cheaper regulator mod that people can build themselves."

Really?
And why should any of us go test their stators if they know they are working?

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Last edited by Knifemaker; 04-29-2016 at 01:26 PM.
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post #6 of 69 (permalink) Old 04-29-2016, 01:59 PM
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@Knifemaker he wants to see right around where everyone's readings are at
Spockster and RoadHopper like this.

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post #7 of 69 (permalink) Old 04-29-2016, 02:21 PM
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Quote:
Originally Posted by OleDirtyDoc View Post
@Knifemaker he wants to see right around where everyone's readings are at
Isn't this info already posted in the stator thread?

Or here:
https://www.vn750.com/forum/19-electr...eshooting.html

If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
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Last edited by Knifemaker; 04-29-2016 at 02:23 PM.
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post #8 of 69 (permalink) Old 04-29-2016, 02:45 PM
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Quote:
Originally Posted by Knifemaker View Post
Isn't this info already posted in the stator thread?

Or here:
https://www.vn750.com/forum/19-electr...eshooting.html
Probably but I think he just wants to get an idea where everyone else is at.I say go for it,Roadhopper.
Spockster and RoadHopper like this.

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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 #9 of 69 (permalink) Old 04-29-2016, 03:26 PM Thread Starter
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Quote:
Originally Posted by Knifemaker View Post
Isn't this info already posted in the stator thread?

Or here:
https://www.vn750.com/forum/19-electr...eshooting.html
What's your stator got?

1987 VN750 California - "Lydia"
Reupholstered leather seat w/matching lockbox.
Rebuilt battery cage
Relocated R/R
AGM battery
Murican MCCT
Redesigned Rear - LED Tag/Signals/Harness
RoadHopper is offline  
post #10 of 69 (permalink) Old 04-29-2016, 03:36 PM Thread Starter
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Quote:
Originally Posted by thtanner View Post
RoadHopper, honestly, you're putting a lot of effort into something that doesn't need another solution. Yes it's 1980s tech, but it works.. GREAT. It works so great every motorcycle manufacturer, from the Japanese to the Italians, use MOSFET regulators. Italy LOVES to throw money at stuff, so if there was something worth while doing, they would have done it for kicks on something that's $60,000.

I think you should add an external alternator if you want to improve charging on your bike. Stators, oil supply, and heat are the weak spot, not a MOSFET.

Not sure how you're going to beat a $20-30 mosfet regulator off eBay with a DIY application, either. The time involved will negate any savings, and I don't see any way it's going to improve charging so much that it'd warrant it.

I know projects are fun but sometimes you need to take a step back and look at the big picture.

I'd start by making simplified wiring harness. Rip out the junk, use quality thicker gauge wire composed of thin stranded copper. If you are unhappy at that point with the mosfet, then look at it.

I'm not trying to discourage creativity, just maybe the effort should be redirected elsewhere..

I appreciate where you're coming from TH, but then again, you haven't got a clue what 30 years of new technology has done for the electronics industry. Seriously. I don't mean that as a put-down or anything, it's just a fact.

And your MOSFET has a heat sink on it, right? Right.


1987 VN750 California - "Lydia"
Reupholstered leather seat w/matching lockbox.
Rebuilt battery cage
Relocated R/R
AGM battery
Murican MCCT
Redesigned Rear - LED Tag/Signals/Harness
RoadHopper is offline  
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