charging ?

Discussion in 'Sportster Models' started by lordharold, Jul 1, 2011.

  1. lordharold

    lordharold Active Member

    191
    0
    2
    working on a late 84 xl manual calls for at least 60 volts ac output or change rotor. I am getting a range of 45 to 49 is there some leway here or not
     
  2. Hoople

    Hoople Account Removed

    7,198
    0
    34
    The A/C voltage output of a stator is a very indirect way to test a stator as being Good. The output is a function of RPM and magnet strength. The stator itself could be fine but the output could measure low due to weak magnets.
    Also the type of meter comes into play. A True RMS meter should be used.


    What RPM are you testing it at. Is your meter a True RMS meter.
     
    1 person likes this.
  3. lordharold

    lordharold Active Member

    191
    0
    2
    testing at 3600 what the manual is calling for, and using a fluke 78

    the stator is showing not grounded and has correct resistance
     
    Last edited by a moderator: Jul 1, 2011
  4. Hoople

    Hoople Account Removed

    7,198
    0
    34
    3600 RPM using a Fluke (most likely is True RMS),,, 45 volts sounds awful low to me. It could be from weak magnets.

    Back in 1984, magnet technology was not what it is today. If those magnets are 25 years old, I would not be surprised if they were weak. Weak magnets would result in low voltage.
    **The 60 volt spec you quote,,, is it from a 1984 manual.**

    Was the associated regulator to this bike found to be shorted.