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Aftermarket charge rotors

Discussion in 'The Garage' started by KonigXS650, Aug 3, 2018.

  1. Anyone have experience with aftermarket charging rotors? Bought one from ricks motorsport electrical, went out within 30 minutes after install. Sent it in for warranty replacement, new one came yesterday and I got maybe an hour ride before it quit working. Worked fine from the start. Good ohms and 2000rpm volts at battery were 14.2. Into the ride my bar mount volt meter was slowly dropping. didn't pass the slap test and didn't pass ohm test when I got back home I have a new regulator, new rectifier and new battery. Should I try a used rotor? Not sure what I'm missing here
  2. Ozboy

    Ozboy XS650 Addict

  3. pamcopete

    pamcopete Ride.Enjoy.Life is Simple

    Custom Rewind
    2014 Pratt Hwy.
    Birmingham, AL

    800 798 7282
    delagem likes this.
  4. Superjet

    Superjet XS650 Junkie Top Contributor XS650.com Supporter

  5. They are going to thoroughly inspect a new unit and ship it out to me. Lets hope the 3rd time around is good. If not I think I'll source a good used rotor and see how that goes.
  6. mrtwowheel

    mrtwowheel Honda Etched On Brain Top Contributor

    I've had great experience with Rick's rotors on two different Honda's that have the same type rotors as the XS650. I would definitely buy from them again. Regulators have been an issue for me, lots of real junk out there, and as always, the wiring. Battery connections, battery, rotor, stator, wiring, wiring connections, brushes, reg/rec, it's ALL got to be right.

    Curious, are you slathering your connections with GREASE?

    Gator xs2 likes this.
  7. All connections have either been replaced or thoroughly cleaned. New brushes, regulator, rectifier and battery all with less than 2 hours total run time. Stator checked out good with a meter. I have not greased any connections
  8. Rick's rotors look nice but mine died within a week. Dead magnet. Wire coil was loose inside the rotor cage when it was hot. It rotated and pulled the wires off of the terminals.
  9. azman857

    azman857 '80 XS 650SG Rider Top Contributor

    I'm not thrilled about RMStator products. Bought one on ebay and in 2-3 months later it failed. They replaced it and I mounted it and still no charge. I'm going to replace the regulator and rectifier and check the wire harness (in place) and check the charging system again.
  10. mrtwowheel

    mrtwowheel Honda Etched On Brain Top Contributor

    Well, it was also banging on other parts because it was not tight to the crankshaft taper. That rotor took thousands and thousands of hits.

  11. Got my new rotor in. Thinking volt drop is the issue. When the battery is registering 12.50 the brush is showing 11.39. I've cleaned my ignition switch and the connections in the headlight bucket. Must be the the wire running from the switch to the brush. Going to trace it and see if there are any obvious issues, if not I'll cut it out and replace it.
  12. Bringing this back up. Bike sat for a good bit while I worked on more important things. Got a new rotor in and everything seemed fine. Went on a fairly decent daytime ride and volts held fine. However it was towards the evening when things went bad again. About 5 minutes into me turning the headlight on the volts dropped. Battery held out until I got home but again the rotor was fried. I am going to replace all the wires I can find leading to and from the headlight. If it pops another rotor I am at a loss as to where to go, just about everything electrical has been replaced.
  13. Jim

    Jim I have a plan. It's something to deviate from. Top Contributor XS650.com Supporter

    Best I can figure... quality on the Chinese rotors is hit and miss. You mighta' got a dud. I've got a rewound rotor here if you're interested.
    TwoManyXS1Bs and Greyandridin like this.
  14. I've been through 4 of them now. First 3 popped within the first 10 minutes of running the bike with the headlight on. Only difference between the first 3 and the 4th was I rode the bike 95% of the time with the headlight off, that's what makes me think its something within that system. Unless all 4 were just not up to par to handle the additional load of the headlight. i'd hate to throw a nice rotor in there and pop it too.
    Jim likes this.
  15. Machine

    Machine Race the wind Top Contributor

    Are these “popped rotor” symptoms likely a result from a failing rectifier ?
    ... following :popcorn:
    Jim likes this.
  16. I have a new reg and rectifier from oregon motorcycle parts.
    Jim likes this.
  17. 5twins

    5twins XS650 Guru Top Contributor

    I'm pretty sure a bad rectifier would rear it's ugly head all the time, not just when you turn the headlight on.
  18. Jim

    Jim I have a plan. It's something to deviate from. Top Contributor XS650.com Supporter

    Measure the voltage (key on engine off) at the battery and at the brown wire going to the regulator and let us know what you get. If you're over a .3V drop (difference), the regulator's gonna work the rotor harder. Turning the light on might be putting it over the top.
    gggGary likes this.
  19. I'll give that a shot after work today and post results
    gggGary and Jim like this.
  20. aldo5468

    aldo5468 Redleg XS650.com Supporter

    A couple thoughts re the headlight system: (1) if you still have the OEM fuseholder with glass cartridge fuses, check the integrity of the clamps at each end that hold the headlight fuse - they are known to get brittle and weaken, losing clamping force over time - worst case, even breaking off. If there's any problem with the headlight fuse clamps, the other fuseholders are suspect, too. (2) check you headlight wattages - OEM headlight is a 50/40 watt unit, not a real bright unit, but it may have been replaced sometime with a higher-rated unit that puts more demand on the charging system that it can supply after a charged-up battery has depleted.
    Jim likes this.

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