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Buell Forum » 1125R Superbike Board » Stator/Voltage Regulator/Charging System subforum » Archive through June 24, 2012 » Battery or stator????? « Previous Next »

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Georgehitch17
Posted on Saturday, March 03, 2012 - 09:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey guys Im in need of some opinions!? I have a 2009 1125R with 12k miles and its on its fourth stator! this current stator was put in at 11,400 miles I road the bike around town for 200 miles before loading it and heading to Texas. I was told to keep the bike above 5k as much as possible. I hardly put it in 6th gear today and I rode it 450 miles and it hovers at 13.3-13.7 volts on the highway. the problem is in town it drops to 12.3 volts. Is this normal? after riding in town its hard to start if I shut it down... I was thinking maybe the battery isn't holding its charge. Im the second owner but this could be the original battery. Would A battery thats going bad cause these symptoms? being that im 1500 miles from home I would love some solid opinions! Thanks for reading guys!
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Dannybuell
Posted on Saturday, March 03, 2012 - 11:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

my first stator went at 2,000 miles with harness in place from day one. My warranty stator has 14,000 miles on it. Wavering voltages sounds very familiar. Do hot restarts barely work?

The 1125's electrical's are lousy in urban riding. I undid the harness several thousand miles ago, seems better in town. I have been told by bad web folk that I should hook the harness back up and replace the harness relay.
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Zac4mac
Posted on Sunday, March 04, 2012 - 02:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It took a while to get all the info straight.
If your harness is functioning, it will charge between idle and 2000 rpm and resume charging once above 4000 rpm.
The harness opens a leg of the 3Ø alternator @ 2000-4000 rpm.

So -
0-2000 rpm - 3Ø charging, but minimally
2000-4000 rpm - single phase, most likely discharging the battery
4000-10500rpm* - 3Ø charging

* race ECM goes to 11000 rpm

It's all about heat management in the stator.

Zack
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Curve__carver
Posted on Sunday, March 04, 2012 - 08:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Zac, you sure about that? The harness behaves differently for a cold vs warm motor. More to it than rpm.
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Brumbear
Posted on Sunday, March 04, 2012 - 08:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is easy to check disconnect you harness and see what the voltage does.
http://www.badweatherbikers.com/buell/messages/290 431/647864.html?1313549258
I did this and the voltage instantly went back to normal so I knew it was something in the harness doing it. I changed the relay in the harness and it seems ok now we will see.
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Georgehitch17
Posted on Sunday, March 04, 2012 - 07:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I went ahead and replaced the battery it fixed nothing... So im thinking stator or regulator. I took the harness off and I noticed no difference at all which I found strange! at Idle it doesn't charge at all. I run it at 3k+ rpm's unless its impossible but I was riding today in conditions where I could keep it above 5k for the most part. it stays at 13.4 consistently. It will hit 14+ only on a cold start and it trickles down to 13.5 within 5 miles. It will hold 12.8 or more as long as its above 2k rpm So in town or at stop lights I have to hold in the clutch and hold the throttle. Any ideas with this new info? Thanks for the responses guys I really appreciate it!
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Zac4mac
Posted on Sunday, March 04, 2012 - 07:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I believe those numbers came from Gemini looking at the code in the ECM.
I got those numbers from Timebandit and trust them, he is a very anal EE(I mean that in a good way, BTW) when it comes to electrical measurements.

Knowing what the harness is SUPPOSED to do, they make perfect sense to me.
Earlier I was thinking the alternator was single phase for everything under 4000 rpm.
Makes a LOT more sense the way TB explained it.

I have to trust a little here, I am worthless as a code monkey.

Zack
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Brumbear
Posted on Sunday, March 04, 2012 - 07:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When you say doesn't charge at all what do you mean the cluster is reading battery voltage? If the meter jumps up to 14 and slowly drops down to say 13 thats what it,s supposed to do. If your voltage didn't change when you disconnected your harness but will start to charge when your revs get higher I would test the stator cause that don't sound good. The VR would most probably not function at all if it were bad and the harness"fix" is disconnected.
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Georgehitch17
Posted on Sunday, March 04, 2012 - 07:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yes the voltage drops rapidly down to the 11.X's. What are your thoughts on the harness not changing anything regardless of being plugged in or not?
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Brumbear
Posted on Sunday, March 04, 2012 - 08:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I know this is a stupid question but did you unplug the harness and plug it back together or just unplug it?
If you did it correctly and I believe you did and it's only charging 11 volts test the stator I believe you will find a leg is failing I doubt it is a regulater if it works once the bike revs up the reg should either work or not.
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Georgehitch17
Posted on Sunday, March 04, 2012 - 08:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I unplugged it and plugged it in how they were originally setup from the factory. I just noticed another gentlemen in the thread above mine is experiencing the exact same issue. Also Brumbear This stator has done this since the day it was brand new I just did't realize it until I got down here to texas in stop and go traffic. I'm from a rural area so Im rarely going slow...
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Brumbear
Posted on Sunday, March 04, 2012 - 08:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'd test the stator I know there is a way to test the 3 phase with a multimeter but I have not done it. It shouldn't be to difficult though.
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Georgehitch17
Posted on Sunday, March 04, 2012 - 09:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've done it on previous stators but my multimeter is on ohio and i'm down in Texas!!
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Oldog
Posted on Sunday, March 04, 2012 - 09:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

20$ wall mart meter would suffice
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Pmjolly
Posted on Sunday, March 04, 2012 - 09:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

George, did you ride all the way down from Ohio? I'm not in Houston, but if you have issues headed back, I am in Arlington between Dallas and Fort Worth. I have probably any tool you might need, and a garage. I have spare 1125R parts, but no electrical parts. Mine is an '08. There is a dealer on the other side of my neighborhood, and they still have the Buell sign on the building. PM me if you are coming through and need help.
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Georgehitch17
Posted on Monday, March 05, 2012 - 09:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Pmjolly I appreciate the offer! What would you guys suggest I do from this point? contact HD they put this stator in under Warranty and its acted this way ever since...
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Georgehitch17
Posted on Monday, March 05, 2012 - 09:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Pmjolly I appreciate the offer! What would you guys suggest I do from this point? contact HD they put this stator in under Warranty and its acted this way ever since...
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Dannybuell
Posted on Monday, March 05, 2012 - 10:05 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Georgehitch17 ~ disconnect the harness and try it for a while. I was getting battery lights in urban riding all the time. It was so crappy my attitude shifted to 'what can I lose'. I disconnected the harness and haven't looked back since. Things are better, it is still a weak system. The bike is a keeper. When the need arises I will get the EBR rotor update and stator from the vendor with the best badweb reputation.
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Georgehitch17
Posted on Monday, March 05, 2012 - 10:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I disconnected the harness yesterday and noticed no difference in charging and discharging...
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Georgehitch17
Posted on Monday, March 05, 2012 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm going to buy a multimeter. I have the latest stator available from HD. I should be about 50 volts a leg at 5k rpm
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Pwillikers
Posted on Tuesday, March 06, 2012 - 12:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I suspect that the harness relay is bad. Pull the relay. Check continuity across the load side of the relay. Apply 12V across the control side. Check continuity across the load side again. Should be open then closed respectively.
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Brumbear
Posted on Tuesday, March 06, 2012 - 06:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Don't think so with the harness fix disconnected it makes no difference so I would think it rules that out.
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Georgehitch17
Posted on Tuesday, March 06, 2012 - 11:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think the stator is slowing killing itself every 200 miles its runs .1 volts lower its down to 13.3 when running 5k plus when I get back to ohio Im going to call hd once again and say hey your 5k+ rpm's didn't do jack S#@$!!!! And once again i'll ask for a 2008 stator! or they can keep replacing!
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Georgehitch17
Posted on Thursday, March 08, 2012 - 09:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

More news! Yesterday I rode for 200 miles and it was back up to 13.5-13.6 the whole time at stop lights it would trickle down to 12.0. Can anyone explain why every cold start it gets up to 14.4 for about two minutes and then starts to drop???? and with this new inf odoes anyone have a idea of what I have going on??? Thanks guys
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Pwillikers
Posted on Thursday, March 08, 2012 - 10:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is exactly the voltage behavior I saw while riding, for several thousand miles, with a bad harness relay. The up shoot is that it was running with only two of the three stator wires connected at all times. I also could never figure out why, when it was cold, it would charge up to 14V and never get close to that when it was hot, but it did.

When cruising at steady speed, when I'd turn the high beams on, the voltage would drop. And, with high beams off again, the voltage would go back up.

If this is your case, it's a sure sign of insufficient charging from an anemic stator.
Could you have one of the three stator wires broken, disconnected? Get that meter out and test your stator.
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Curve__carver
Posted on Thursday, March 08, 2012 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pw, how does it behave now? What did you change?
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Georgehitch17
Posted on Thursday, March 08, 2012 - 07:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think it might be a bad relay or possibly a broken wire on one of the legs! Im going to charge it tonight and test the legs in the am!
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Pwillikers
Posted on Saturday, March 17, 2012 - 12:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How does it behave? It now behaves as per the design specs for the harness that genesis posted a while back. In other words, it actually charges with all three stator legs when it's supposed to. And, it actually seems to work quite nicely.

If your voltage drops below 12.5 at idle, suspect your harness relay.
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