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Discussion Starter #1
Decided to take the 'ol Vulcan out for a spin.Drove 10-12 miles from the house stopped at a STOP sign noticed my RPMs seemed a bit low...bike quit.Hit starter button heard "rrrr,rrrr....rrrr".Was like What the HE double L!!Sat there with seat off (figured "passer by" would think OK hes got some bike issue...not pulled over using cell whatever....) Twenty minutes in the 90 degree heat a young couple (20's?) pulled up said "You need help??" I was needing just a jump I figured...they had cables,got my jump...hauled a$$ home!!Put that bitch on charger...hope that fixes quit/start issue.Been driving it NO ISSUES for like few months.
 

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I'd guess, if the battery isn't shorted internally, then the charging system is down.

If jump starting from a car, leave the car engine off. Supposedly, the running car can cook the r/r.
 

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Feel for ya

I feel for you man. My bike left me stranded several times as I found out the PO sold me a bike with a bad stator. Then I found out wet batteries don't like being discharged over and over as mine bit the dust after less than a year. Now I am riding on a new AGM with no stator and I still have to wonder if I will make it home. I am seriously thinking about the small block chevy altenator mod. I have a brand new chrome alternator just sitting in the garage. If I was sure it would not leak oil where the shaft comes out the sidecover I would do it for sure. Do that, and my charging problems would be OVER FOR GOOD.

http://www.vn750.com/forum/70-projects-builds/46090-external-alternator-vn750-style-;.html

Sadly, the pics are broken on this whole thread for me ?
 

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I agree

I agree, and I carry a jump pack with me, it is just a hassle not knowing when you will die and hopefully have a place to get off the road to jump it. If I don't do the external alternator mod, my second choice is putting a second, smaller AGM where the goats belly used to be, switched so I can just switch over to it to get me home if my main battery dies.

One of the reasons I hesitate to just replace stator is that I finally got ahold of the PO and he said he just paid 500 bucks to have the stator changed, showed me the receipt, and it lasted 2 months.
 

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Discussion Starter #6
That's a cool little jump pack...I actually have room to carry cables...good info about the "donor" not running.Charged battery about 6-7 hours...starts fine since!!!(3-4 starts so far.)
 

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FREEBIRDS MC CENTRAL NY
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I agree, and I carry a jump pack with me, it is just a hassle not knowing when you will die and hopefully have a place to get off the road to jump it. If I don't do the external alternator mod, my second choice is putting a second, smaller AGM where the goats belly used to be, switched so I can just switch over to it to get me home if my main battery dies.

One of the reasons I hesitate to just replace stator is that I finally got ahold of the PO and he said he just paid 500 bucks to have the stator changed, showed me the receipt, and it lasted 2 months.
how's your rectifier and it's connections?

Sent from my LGL34C using Tapatalk
 

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New R/R

Hey Doc,

I put on a new stock R/R, the plug was fried, I put new terminal ends on the wires. I also removed the bullet connectors on the stator wires and soldered them. I checked every other electrical connection on the bike for corrosion or burnt signs. I did the two wire mod and the blue wire mod which helped my starting big time. I took the JB off and it looks fine, cleaned the two plugs on the JB real good with contact cleaner and the plugs look fine. I have AC output on all three stator wires but it is half what it should be and for some reason does not go up with throttle increase. The PO said he just paid a bike shop to fix it and has no idea what stator they put in it. I have a feeling that they put in a used stator, since there was no grommet on the stator wires where they leave the sidecase. Don't new stators have the grommet on the wires when you buy one?
 

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Yes, new stators come with a new grommet. What kind of shop does that sort of work?!!

What number did you get for AC volts? What do you get for DC volts at the battery now?

Thanks for the feedback on the Two-Wire Mod.
 

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15v

The stator legs were about 12 -15v AC . No short to ground, and all legs about the same. I am really considering the external alternator. Then, no more charging problems, and even if I am on a trip and the alternator goes out, I can pull into any auto parts store and change it in the parking lot, lol. I don't mind doing the stator job, but not knowing how long a new one will even last bothers me.

And as for the input on the two-wire and blue-wire mods:

I had no probs with cold starting before the 2-wire mod, but it does seem to start quicker, like almost instantly and I never have to choke, and never did.

I had probs before once in awhile with taking a few tries to start when hot, that seems to have been fixed by the 2-wire mod.

The blue wire mod worked fine for me, did not drain enough juice on start to notice slower cranking at all. I now run with no headlight or tail light fuse (Brake lights and signals still work) because I am riding with no stator and don't ride at night.


When and if I do the external Alternator mod, I will be getting rid of the JB with the help of the posts from this forum, and I have a service manual with all the wiring diagrams.
 

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Discussion Starter #12
'Course the 'ol VN 750 in the shop now...when the battery "dies"...the bike "DIES" too!!So was getting by with trickle charger...you know ride good few miles,12-15 then start'er up head home to the trickle charger.But I figure its only a matter of time and that style riding probably not good for the bike/system either.(Also who the HELL wants to ride here/there a little...hope to make it home??)
 

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Discussion Starter #13
Shop wants 650 to RnR that Stator...think they might be going with the "tilt" method.I say NO gonna pick it up do the frame mod.Hoping Mr Parrot can work with mine...requested his address through E_Mail.
 

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My frame is still perfect after 500 miles. Didn't expect any issues, but nice to know it's flexing is a non issue. I think my heat affected zones were very small. I've decided any more frame mods will be best using MIG with . 030 Lincoln SuperArc solid wire and C25 gas. The frame tube is thinner than expected. Good news for people more confident with MIG.
 

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Discussion Starter #15
My frame is still perfect after 500 miles. Didn't expect any issues, but nice to know it's flexing is a non issue. I think my heat affected zones were very small. I've decided any more frame mods will be best using MIG with . 030 Lincoln SuperArc solid wire and C25 gas. The frame tube is thinner than expected. Good news for people more confident with MIG.
Sweet...I have a non-gas wire fed MIG.So took my Vulcan to this shop,greasy lil corner shop been workin on bikes for 30 years (??)...told dude to check charge system...then showed him how nice/easy bike starts with full charged battery.He even commented "Sounds good".Week later he gives me a price on Stator RnR,I tell him nah,coming to get the bike...I go to pick up my bike...SUCKER AINT GONNA START/RUN...he cut the wires to my rectifier!!He showed me "melted plug" at rectifier...OK but still my bike was startin/runnin when brought to his shop!! :frown2: What the H....!!
 
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