| Author |
Message |
    
Wrongway2
| | Posted on Saturday, February 15, 2014 - 02:16 pm: | 
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I tried to do a search, but couldn't really narrow down my issue. I would be very grateful for any help I could get. Bike is a 2007 Ulysses. New Battery, New Stator, 2nd new Voltage Regulator. I cant find any bad ground or connection issues. At about 2800 RPM's My charging system goes up to between 17 and 18 volts. Sounds like a bad VR, but like I said I replaced it with another new one and it is still over charging. I made a harness to go straight from the VR at the 77 connector to the Battery and still have 17 to 18 volts. It sure sounds like a bad VR, but could I have gotten 2 bad ones in a row? |
Reepicheep
| | Posted on Saturday, February 15, 2014 - 04:12 pm: |
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Sounds like a VR, a VR ground, or a VR connection... what are the battery and associated connections like? |
Wrongway2
| | Posted on Sunday, February 16, 2014 - 10:45 am: |
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Battery is new. I have triple checked the connections. Like I said, I ran 2 wires with good connections straight from the VR 77 connector to the battery, which in my mind eliminated anything on the bike with the same result. I bought both new VR's from Al. Do you think the factory could have had a bad run?? At $180 a shot with shipping, I cant afford to buy too many more. |
Andersonhdj
| | Posted on Sunday, February 16, 2014 - 06:13 pm: |
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Just a dumb question / shot in the dark - What are you testing with? |
Mesozoic
| | Posted on Sunday, February 16, 2014 - 08:47 pm: |
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I had exactly the same problem with my '08, although I believe it has a different style stator than the pre-'08 models. Overvoltage was high enough that is caused my halogen lamps to blow out and made the engine run funny, throw erroneous codes, and finally set the battery voltage code. The issue was intermittent as well. I finally diagnosed mine by datalogging during a short ride.
The solution: Compufire voltage regulator. The definitive solution for '08 and later models is part number 55150. Perhaps a 55120 would be a good solution for the '07 and earlier models. Either way, no more worrying about the VR. |
Wrongway2
| | Posted on Monday, February 17, 2014 - 12:18 pm: |
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Andersonhdj, No such thing as a dumb question. I have a signal dynamics voltage monitor which is flashing green (meaning it is over 15 volts. Also have a digital voltmeter that plugs into the accessory plug which reads 17+ volts at 3000 rpms. Also checked with an Ideal and Fluke Multimeter's with the same results. |
Andersonhdj
| | Posted on Monday, February 17, 2014 - 01:57 pm: |
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Just had to ask! |
Sirvincentblack
| | Posted on Sunday, April 27, 2014 - 10:10 pm: |
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My 2006 uly xb12x has a new stator, New regulator, New battery (hd) New 77 connection. I get 18v at the 77 connector, I go to the battery and only find 12.2 volts. I've checked the starter positive cable is tight. Both terminals are clean and tight. Grounds clean of paint and tight. Stator three pin connector looks good. What am I missing? |
Reepicheep
| | Posted on Monday, April 28, 2014 - 07:55 am: |
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Wow, how the heck can that happen?
Is it a stock regulator? |
Sparky
| | Posted on Monday, April 28, 2014 - 01:45 pm: |
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Sir, how are you reading voltage at the 77 connector? If you disconnect it, it will be open circuit voltage not under load, thus approx 18 VDC, right? |
Sirvincentblack
| | Posted on Monday, April 28, 2014 - 02:56 pm: |
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With a multimeter on the regulator side of the 77.
Reepicheep, yes New stock regulator |
Reepicheep
| | Posted on Monday, April 28, 2014 - 03:44 pm: |
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That makes no sense. The VR voltage is too high, the battery voltage is too low.
If it were me at this point, I'd be trying to figure out how to test each part individually just to remove noise from the system. Stator would be easy, battery would be less hard (300 watt halogen shop light across terminals to put substantial load on battery to test). VR much harder to test independently.
That's a stumper. |
Andersonhdj
| | Posted on Monday, April 28, 2014 - 04:59 pm: |
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Just my 2cents - sounds like there's a break between the VR and the battery - not perhaps a break in a wire ?
Maybe not completely severed but enough to affect the amount of current reaching the battery.
You should be reading 13.5 - 8ish volts at the battery.
Also Grounds seem to be problematic from what i've read ,i know you.ve already done them but it's worth checking again.
(Message edited by andersonhdj on April 28, 2014) |
Buell_bert
| | Posted on Monday, April 28, 2014 - 06:59 pm: |
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Could you keep following the wiring back and find out where the voltage does drop? |
Reepicheep
| | Posted on Tuesday, April 29, 2014 - 08:28 am: |
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Good advice, but even then the VR should be shunting down to 14 volts or so, not 18. And maybe burning up in the process.
Maybe that's it. You fried the new VR because there is a break in the wire  |
Andersonhdj
| | Posted on Saturday, May 03, 2014 - 05:05 pm: |
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Any answers yet ? |
Sirvincentblack
| | Posted on Saturday, May 03, 2014 - 05:20 pm: |
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None, I assumed that the stator was good since I had recently changed it. It should have continuity but sadly it doesn't. I'm going to open up the primary a and see if the rotor bolts are touching the stator grounding it out. More to come |
Buell_bert
| | Posted on Saturday, May 03, 2014 - 06:27 pm: |
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Am I losing something here but this looks like 2 posts |
Sirvincentblack
| | Posted on Saturday, May 03, 2014 - 07:37 pm: |
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Two posts, similar symptoms. Sorry wrongway2 if I hijacked your post.did you figure your bike out? |
Reepicheep
| | Posted on Sunday, May 04, 2014 - 10:30 am: |
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Shorted stator should be producing low voltage, not high voltage.
High voltage should be only a result of a bad voltage regulator, or a bad voltage regulator connection, or a mistake in measuring voltage. |
Sirvincentblack
| | Posted on Sunday, May 04, 2014 - 01:03 pm: |
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True. I think now that you can't take a reliable reading at the 77 connector. |
Sirvincentblack
| | Posted on Tuesday, June 10, 2014 - 08:30 am: |
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So I took the rotor back off. The stator was fried. I guess the new stator wire harness was too tall and the pin was sheared off by the rotor bolts. I used the old one, put the rotor back on...spun it and heard noise I didn't like. Found the rotor was rubbing on one of bolt ports of the primary housing. Ground that down, put the primary case back together, fired it up...charging ! It must have been slowing down the rotor only allowing low voltage. I'm riding again! Thanks everyone for all the input and advice |
Reepicheep
| | Posted on Tuesday, June 10, 2014 - 10:04 am: |
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The rotor is part of the crank, so it couldn't have been slowing it down unless it sheared the splines on the crank.
Could have been a bad connector or ground somewhere.
Keep an eye on it though, the old stator might have an intermittent issue that could creep back up. |
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Charging System putting out 18 volts