MF battery or New Stator? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 10-21-2013, 11:54 AM Thread Starter
Member
 
Join Date: Jun 2013
Location: Eugene, Oregon
Posts: 37
iTrader: (0)
 
MF battery or New Stator?

I have a 1992 VN750 and it just doesn't seem to be charging the battery very well (hooked it up to a volt meter and it is only cranking like 13 at 5K rpm's...

The shop said there's no real good way to tell if the stator/rotor is bad except to just replace... they also say it's more often the stator rather than the rotor and the cost is $600-$700...

I am not sure if a MF battery will help "solve" the charging issue? Is it a bandaid step that will only last me a season? I don't mind spending the ~$80 for the MF battery if it means the bike starts for me every time I want to ride it next summer...

Can anyone offer suggestions as to which direction?
Orkron is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 10-21-2013, 11:57 AM
2014 KLR 650!
 
Goofyfoot2001's Avatar
 
Join Date: Jun 2013
Location: Tega Cay, SC
Posts: 3,359
iTrader: (1)
 
Quote:
Originally Posted by Orkron View Post
I have a 1992 VN750 and it just doesn't seem to be charging the battery very well (hooked it up to a volt meter and it is only cranking like 13 at 5K rpm's...

The shop said there's no real good way to tell if the stator/rotor is bad except to just replace... they also say it's more often the stator rather than the rotor and the cost is $600-$700...

I am not sure if a MF battery will help "solve" the charging issue? Is it a bandaid step that will only last me a season? I don't mind spending the ~$80 for the MF battery if it means the bike starts for me every time I want to ride it next summer...

Can anyone offer suggestions as to which direction?
Now I don't know if I have my voltmeter connected quite right but mine reads 13volts at 3k and above and I have a MF battery. I charged it yesterday and it only took maybe 30 minutes to be fully charged so my guess is it's your battery.

I'm also going to assume that if you are sending over 12volts to the battery then it's charging the battery if the battery is good no?

2014 Kawasaki KLR 650
Back to the Kawa World
Goofyfoot2001 is offline  
post #3 of 11 (permalink) Old 10-21-2013, 12:25 PM
Senior Member
 
BeeSea's Avatar
 
Join Date: May 2010
Location: Clayton, OH
Posts: 155
iTrader: (0)
 
See my thread named battery not staying charged. In the electrical section gives a pretty thourough chart on how to check electrical stuff and you can post results and get lots of help...

Sent from Motorcycle.com Free App

BeeSea
1986 750 Vulcan
Coastered
Relocate R/R to side cover
Re-did the engine
from the case up.(And it runs)
YOU CAN TOO!
BeeSea is offline  
 
post #4 of 11 (permalink) Old 10-21-2013, 12:33 PM
Senior Member
 
Spockster's Avatar
 
Join Date: Nov 2012
Location: WV
Posts: 6,635
iTrader: (5)
   
Your shop is full of hacks!

The stator and r/r can be tested with absolute certainty and the procedures are on this site.

I would want to see what your battery voltage is before the engine is started, then work from there. At 13v output, the charging system isn't quite dead yet, could be a weak battery pulling it down.

Don't think I have more than $250 in my stator, balancer, and r/r, but the labor was on me. The parts in my signature are the best ones to use.

PS- My setup runs 14.5v most of the time, a solid 15v when my battery cable came loose, oops.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf

Last edited by Spockster; 10-21-2013 at 12:35 PM.
Spockster is offline  
post #5 of 11 (permalink) Old 10-21-2013, 03:10 PM
2014 KLR 650!
 
Goofyfoot2001's Avatar
 
Join Date: Jun 2013
Location: Tega Cay, SC
Posts: 3,359
iTrader: (1)
 
So can someone post the link to the best way to hook up the voltmeter. THE BEST WAY for THE MOST ACCURATE reading to a SWITCHED connection. I would appreciate it. I have it coming off the right front running light now which is ok until you turn on a blinker or hit the brake.

2014 Kawasaki KLR 650
Back to the Kawa World
Goofyfoot2001 is offline  
post #6 of 11 (permalink) Old 10-21-2013, 03:19 PM
Senior Member
 
Spockster's Avatar
 
Join Date: Nov 2012
Location: WV
Posts: 6,635
iTrader: (5)
   
Mine is direct to the battery. With the ground going through a toggle switch mounted on the frame between the seat and left side cover. Slide a finger inside to flip it on.

I still see some fluctuation with signals, etc., should be expected.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
Spockster is offline  
post #7 of 11 (permalink) Old 10-21-2013, 03:28 PM
2014 KLR 650!
 
Goofyfoot2001's Avatar
 
Join Date: Jun 2013
Location: Tega Cay, SC
Posts: 3,359
iTrader: (1)
 
Quote:
Originally Posted by Spockster View Post
Mine is direct to the battery. With the ground going through a toggle switch mounted on the frame between the seat and left side cover. Slide a finger inside to flip it on.

I still see some fluctuation with signals, etc., should be expected.
I'm just such a dolt though and I know I would end up leaving it on and draining the battery.

2014 Kawasaki KLR 650
Back to the Kawa World
Goofyfoot2001 is offline  
post #8 of 11 (permalink) Old 10-21-2013, 03:48 PM
..have a vulcan good day!
 
WilliamTech's Avatar
 
Join Date: May 2011
Location: Pensacola, FL.
Posts: 4,508
iTrader: (17)
   
Quote:
Originally Posted by Goofyfoot2001 View Post
So can someone post the link to the best way to hook up the voltmeter. THE BEST WAY for THE MOST ACCURATE reading to a SWITCHED connection. I would appreciate it. I have it coming off the right front running light now which is ok until you turn on a blinker or hit the brake.
I wired mine to read the battery via the switched "Coil Mod" relay -
(the energized side of relay).
With Ignition switched "ON", Meter always reads the battery...same voltage available to the Ignition Coils. Easy to keep an eye on the charging circuit, thus not get stranded.


'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!

Last edited by WilliamTech; 10-21-2013 at 03:51 PM.
WilliamTech is offline  
post #9 of 11 (permalink) Old 10-21-2013, 03:52 PM
2014 KLR 650!
 
Goofyfoot2001's Avatar
 
Join Date: Jun 2013
Location: Tega Cay, SC
Posts: 3,359
iTrader: (1)
 
Quote:
Originally Posted by WilliamTech View Post
I wired mine to read the battery via the switched "Coil Mod" relay -
(the energized side of relay).
With Ignition switched "ON", Meter always reads the battery...same voltage available to the Ignition Coils. Easy to keep an eye on the charging circuit, thus not get stranded.

hmmm ah, I disconnected that particular mod because it wasn't really doing anything different, but I guess I could hook that back up. Or just the relay.

2014 Kawasaki KLR 650
Back to the Kawa World

Last edited by Goofyfoot2001; 10-21-2013 at 04:13 PM.
Goofyfoot2001 is offline  
post #10 of 11 (permalink) Old 10-21-2013, 04:34 PM
Senior Member
 
Spockster's Avatar
 
Join Date: Nov 2012
Location: WV
Posts: 6,635
iTrader: (5)
   
Quote:
Originally Posted by Goofyfoot2001 View Post
I'm just such a dolt though and I know I would end up leaving it on and draining the battery.
They really don't pull much, I've left mine on just to see, and no difference. But my battery is 101%. With all the dinking around with the key on setting up lights, it's still at 12.85v.

Somewhere I saw a post where they left it on all the time, so they could walk by and see how the battery was doing.

Been all day soldering three wires, and have to redo one, no ride today, too weak and dizzy.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
Spockster is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Tags
mf battery , rotor , sealed battery , stator

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome