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    Burning through stators

    81 gs1100e
    Why do I keep burning up stators?

    oil doesn’t run dry or remarkably low, I keep it topped up when chasing the oil blow by issues… have a mosfet r/r. Good connections between…

    maybe this is just par for the course, but it looks like the insulation is breaking down and it’s gonna die eventually. Had a lithium batt in there for a few years, went back to AGM at the top of this season.

    Should they look new after a few years running on an optimized setup?
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    81 gs1100E
    81 gs550
    74 xlch 1000 custom
    03 ktm 525 exc supermoto
    76 honda cj360
    72 honda cl350
    2 green parrots

    #2
    What PN is your R/R? You need a SH775, to help protect your stator.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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      #3
      Are these new srators or salvage? The insulation probably ages even without heat. Even sitting on a shelf.


      1983 GS 550 LD
      2009 BMW K1300s

      Comment


        #4
        Originally posted by Nessism View Post
        What PN is your R/R? You need a SH775, to help protect your stator.
        It’s a 775 I believe. My memory isn’t that great but my research skills are, and I read a lot on this forum about them and the specific one to seek out. I do remember that i got this one from eBay from a salvaged bike that spec’d it as an OEM part.. something tells me it was a Yamaha R6 or something of the like.

        and this was a new stator, from caltric, I’m sure. They make some pretty good value stuff for the gs1100. Rear brake pads, also.
        81 gs1100E
        81 gs550
        74 xlch 1000 custom
        03 ktm 525 exc supermoto
        76 honda cj360
        72 honda cl350
        2 green parrots

        Comment


          #5
          My Caltrics look better after years of use with a SH775 or Compufire.
          Not new, but just a hint of oil baked on.
          Changing oil every year.

          Yours looks like it got quite hot, so maybe your SH775 was a fake after all ?
          Think that's why Ed asked for specifics on it.
          Rijk

          Top 10 Newbie Mistakes thread

          CV Carb rebuild tutorial
          VM Carb rebuild tutorial
          Bikecliff's website
          The Stator Papers

          "The thing about freedom - it's never free"

          Comment


            #6
            Originally posted by CincinnatiKid View Post

            It’s a 775 I believe. My memory isn’t that great but my research skills are, and I read a lot on this forum about them and the specific one to seek out. I do remember that i got this one from eBay from a salvaged bike that spec’d it as an OEM part.. something tells me it was a Yamaha R6 or something of the like.

            and this was a new stator, from caltric, I’m sure. They make some pretty good value stuff for the gs1100. Rear brake pads, also.
            The R6 didn't use a SH775. How about checking the writing on the top fin?
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment


              #7
              God god damnit damnit

              checked the scribe marks on the R/R and it’s a “FAxxxxx” so that’s definitely the issue.

              So I got one on eBay today for $36 that is definitely Sh775

              i saw that my last stator was purchased in oct 2021. And the gs is just one of 5 bikes so it doesn’t even get used full time!

              in theory, the sh775 ought to keep the amperage between stator and r/r low, and the wire disconnect points should keep from being overheated, right? Mine were stiff and the plastic jackets on the bullet connections were brittle.

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              This gallery has 1 photos.
              81 gs1100E
              81 gs550
              74 xlch 1000 custom
              03 ktm 525 exc supermoto
              76 honda cj360
              72 honda cl350
              2 green parrots

              Comment


                #8
                Wow super small pic… it’s a 775

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                This gallery has 1 photos.
                81 gs1100E
                81 gs550
                74 xlch 1000 custom
                03 ktm 525 exc supermoto
                76 honda cj360
                72 honda cl350
                2 green parrots

                Comment


                  #9
                  Good job, buying a SH775.

                  This is my recommended way to hook it up. Key element: wire the stator direct to the R/R, bypassing the factory harness.

                  SH775 Install by nessism, on Flickr
                  Ed

                  To measure is to know.

                  Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                  Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                  Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                  KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                  Comment


                    #10
                    Totally, thanks. That’s how I have the current one wired in.

                    wonder how long it will be until a new stator is needed now. Hopefully it can run the rest of the season with this new help.
                    81 gs1100E
                    81 gs550
                    74 xlch 1000 custom
                    03 ktm 525 exc supermoto
                    76 honda cj360
                    72 honda cl350
                    2 green parrots

                    Comment


                      #11
                      Nessism​ That post and picture should be a easily accessible "STICKY" somewhere. So many people are getting duped by these fake, junky R/R's. It's too bad EBAY doesn't do a dang thing about this.

                      Comment


                        #12
                        Originally posted by CincinnatiKid View Post
                        Totally, thanks. That’s how I have the current one wired in.

                        wonder how long it will be until a new stator is needed now. Hopefully it can run the rest of the season with this new help.
                        When I installed a 775, I deliberately left the slightly-cooked stator in place just to see how long it would last.
                        That was about 2015 - it's still working fine. Absolutely without a doubt it would have expired long since with the old regulator.
                        ---- Dave

                        Only a dog knows why a motorcyclist sticks his head out of a car window

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                          #13
                          Originally posted by Grimly View Post

                          When I installed a 775, I deliberately left the slightly-cooked stator in place just to see how long it would last.
                          That was about 2015 - it's still working fine. Absolutely without a doubt it would have expired long since with the old regulator.

                          big up

                          thanks for saving me $80!!
                          81 gs1100E
                          81 gs550
                          74 xlch 1000 custom
                          03 ktm 525 exc supermoto
                          76 honda cj360
                          72 honda cl350
                          2 green parrots

                          Comment


                            #14
                            Originally posted by CincinnatiKid View Post


                            big up

                            thanks for saving me $80!!
                            Yes, but; I keep a spare stator on a shelf just in case, and I rarely go out beyond battery re-home capacity, should the old stator stop working.
                            I think I've proved my point to myself, it's beyond time to hoik out the old stator.
                            ---- Dave

                            Only a dog knows why a motorcyclist sticks his head out of a car window

                            Comment


                              #15
                              CK, in your first post you mention that you have a MOSFET R/R and later show a picture of a 775.

                              With the proof that you have a 775, you need to adjust your thinking a bit, it is NOT a MOSFET R/R.

                              MOSFET is simply the type of transistor that is used in the R/R. It is more efficient than the typical silicon transistor, so it is a bragging point, but it would still be in a shunt-type R/R, which the 775 is not.
                              If you're not living on the edge, you're taking up too much space.

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