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Does this stator look right to you?

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    #1

    Does this stator look right to you?



    Should there be so much copper wire showing? Isn't there supposed to be insulation around the copper wiring? This is off a 1978 GS550 that only has 12K miles on the odometer that I am currently doing the 550/650 build on. When I had it running a few years ago everything ran fine. Just wondering...
    sigpic

    1974 GT750 ...done, running and sold
    1974 GT550 .... under construction (done and sold)
    1978 GS550........all stock, running (going to do 550/650 build with it)
    1978 GS1000...another project (Given to son #2)
    1982 GS750EZ ...daily driver(given to son#1)
    1982 GS1100G...completed and traded to son #2 for the 750 back
    1982 GS750EZ...daily driver (got it back in trade with son #2)
    1983 GR650 Tempter.... engine rebuild completed (and sold)
    Tags: None
    #2
    There is insulation on the wiring it looks fine.

    Comment

      #3
      Ok, thanks. I thought the copper windings needed to be insulated too.
      sigpic

      1974 GT750 ...done, running and sold
      1974 GT550 .... under construction (done and sold)
      1978 GS550........all stock, running (going to do 550/650 build with it)
      1978 GS1000...another project (Given to son #2)
      1982 GS750EZ ...daily driver(given to son#1)
      1982 GS1100G...completed and traded to son #2 for the 750 back
      1982 GS750EZ...daily driver (got it back in trade with son #2)
      1983 GR650 Tempter.... engine rebuild completed (and sold)

      Comment

        #4
        Originally posted by Super View Post
        Ok, thanks. I thought the copper windings needed to be insulated too.
        They do need insulation; it is probably a clear insulation.

        In addition there should be a heavy epoxy on the windings to fix the wires that are exposed to mechanical forces due to the charging currents. If they are allowed to flex, with the rotation of the magnetic fields then they are sure to prematurely work harden and break.

        That is why I like the Electrosport stators for the ED; apparently not all of the Electrosport stators are made this way but the ones for my bike are.

        Last edited by posplayr; 05-31-2015, 04:47 PM.

        Comment

          #5
          Has your rotor been upgraded?

          The '78 550 (and all the other GSes with kick starters) had 12-pole stators, that one has 18.

          If your rotor has not been updated to match the 18-pole stator, you will get NO charging voltage.

          .
          sigpic
          mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
          hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
          #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
          #2 son: 1980 GS1000G
          Family Portrait
          Siblings and Spouses
          Mom's first ride
          Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
          (Click on my username in the upper-left corner for e-mail info.)

          Comment

            #6
            Take a screw driver and see how many poles your magnet has. If you take the screw driver and move it around the flywheel magnets it should grab 18 times in one full circle. If not then you have a mismatch as Steve indicated. If so, then you're good to go. Stator looks clean and relatively new. If it only grabs 12 times then you need to replace the flywheel with one that's correct for the stator or get a 12 pole stator.
            http://img633.imageshack.us/img633/811/douMvs.jpg
            1980 GS1000GT (Daily rider with a 1983 1100G engine)
            1998 Honda ST1100 (Daily long distance rider)
            1982 GS850GLZ (Daily rider when the weather is crap)

            Darn, with so many daily riders it's hard to decide which one to jump on next.;)

            JTGS850GL aka Julius

            GS Resource Greetings

            Comment

              #7
              Wow! This is why this site is such a great site. All the info is amazing! I had no idea that this bike should have a 12 pole stator. I will do what JTGS850GL said and check the flywheel magnets and post what I find out. Thanks everyone.
              sigpic

              1974 GT750 ...done, running and sold
              1974 GT550 .... under construction (done and sold)
              1978 GS550........all stock, running (going to do 550/650 build with it)
              1978 GS1000...another project (Given to son #2)
              1982 GS750EZ ...daily driver(given to son#1)
              1982 GS1100G...completed and traded to son #2 for the 750 back
              1982 GS750EZ...daily driver (got it back in trade with son #2)
              1983 GR650 Tempter.... engine rebuild completed (and sold)

              Comment

                #8
                12 magnets on the rotor. So naturally, my next question.... which is easier/cheaper to find... A 12 pole stator or an 18 magnet rotor? Also, would it be wiser to just upgrade to an 18 magnet rotor for the upgrade since the stator is in good shape?
                sigpic

                1974 GT750 ...done, running and sold
                1974 GT550 .... under construction (done and sold)
                1978 GS550........all stock, running (going to do 550/650 build with it)
                1978 GS1000...another project (Given to son #2)
                1982 GS750EZ ...daily driver(given to son#1)
                1982 GS1100G...completed and traded to son #2 for the 750 back
                1982 GS750EZ...daily driver (got it back in trade with son #2)
                1983 GR650 Tempter.... engine rebuild completed (and sold)

                Comment

                  #9
                  So looking at some parts fiche it appears that the 81 through 83 GS550's had 18 pole stators. Would a rotor from these years of 550's work as a bolt on swap? The pictures of them on ebay show 3 large magnets versus the 12 individual magnets on my current rotor.
                  sigpic

                  1974 GT750 ...done, running and sold
                  1974 GT550 .... under construction (done and sold)
                  1978 GS550........all stock, running (going to do 550/650 build with it)
                  1978 GS1000...another project (Given to son #2)
                  1982 GS750EZ ...daily driver(given to son#1)
                  1982 GS1100G...completed and traded to son #2 for the 750 back
                  1982 GS750EZ...daily driver (got it back in trade with son #2)
                  1983 GR650 Tempter.... engine rebuild completed (and sold)

                  Comment

                    #10
                    Originally posted by Steve View Post
                    Has your rotor been upgraded?

                    The '78 550 (and all the other GSes with kick starters) had 12-pole stators, that one has 18.

                    If your rotor has not been updated to match the 18-pole stator, you will get NO charging voltage.

                    .
                    It looks like a Pratt and Watneys R-6950 Double Bumble Radial Engine.
                    "Men will never be free until Mark learns to do The Twist."

                    -Denis D'shaker

                    79 GS750N

                    Comment

                      #11
                      Nice!!! I've always loved those big old radial engines!

                      Anyone else have any experience with upgrading to an 18 pole stator and rotor combo?
                      sigpic

                      1974 GT750 ...done, running and sold
                      1974 GT550 .... under construction (done and sold)
                      1978 GS550........all stock, running (going to do 550/650 build with it)
                      1978 GS1000...another project (Given to son #2)
                      1982 GS750EZ ...daily driver(given to son#1)
                      1982 GS1100G...completed and traded to son #2 for the 750 back
                      1982 GS750EZ...daily driver (got it back in trade with son #2)
                      1983 GR650 Tempter.... engine rebuild completed (and sold)

                      Comment

                        #12
                        I agree with you about the radial engines, but they were odd numbers of cylinders. That ties in with Harley whose design came from a two cylinder section of a radial engine. Perhaps that is why they like straight pipes, the radials had straight pipes. There are some interesting radial motorcycles on youtube if you like the bizarre.
                        http://www.thegsresources.com/_forum...ine=1440711157'78 GS1000E, Dyna-S ignition, Dyna Green Coils, K&N pods, Delkevic SS 4-1 exhaust, Dynojet Stage 3 jet kit, Russell SS Brake Lines, Progressive suspension, Compu-Fire series Regulator 55402 and Advmonster cree LED headlight conversion.

                        Comment

                          #13
                          *Gets out a hammer* I'll give you an odd number of cylinders lol.
                          "Men will never be free until Mark learns to do The Twist."

                          -Denis D'shaker

                          79 GS750N

                          Comment

                            #14
                            Replacing the stator with the correct 12 pole unit will be the easiest way to go. You already have the cover off and it will restore your charging system back to OEM. You can always sell your current stator and recoup some or all of the cost.

                            You can source out the correct rotor for the 18 pole stator as well, but you need to be careful as to which rotor you get in order to get it to bolt up and allow the starter clutch you have to work with it.
                            http://img633.imageshack.us/img633/811/douMvs.jpg
                            1980 GS1000GT (Daily rider with a 1983 1100G engine)
                            1998 Honda ST1100 (Daily long distance rider)
                            1982 GS850GLZ (Daily rider when the weather is crap)

                            Darn, with so many daily riders it's hard to decide which one to jump on next.;)

                            JTGS850GL aka Julius

                            GS Resource Greetings

                            Comment

                              #15
                              I agree with JTGS, getting a stator for your existing 12 pole rotor is likely the safest route, new ones likely run around $100. Match it up with a SH-775 r/r and eliminate separate rectifier and regulator if you still have them
                              1981 gs650L

                              "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

                              Comment

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