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    Thanks for all the great info. Really useful stuff. I never really understood much about stators, R/Rs and their workings but I'm certainly getting an education now. I guess that's one good thing when you're trying to get a bike running properly.
    thanks again,
    baz

    Comment


      Hi Matchless,
      I know I'm really dragging this stuff out but I found a Hayabusa R/R at a good price in my area. It's from the 99 to 07 models and has 3 black wires, 1 white/black striped wire and 1 red wire, from what I'm told.
      Do you think that'll work on my 83 GS750ESD?
      thanks for all your help,
      baz

      Comment


        That one should work. No problem.

        Comment


          A friend asked me to fit one of these mosfet RR's, he got one from an 02 R1..

          Yamaha YZF-R1 02 Shindengen FH-001 12V 35 Amps / 200V rating 14.1V - 14.9V

          It has 6 connectors (unlike all the others I've seen before of this type). The extra connector is in the middle of the the +/- (or at least what is the +/- on the others I've fitted).

          Can anyone tell me what the 6th connection is for?

          Labelled "5" on this pic:

          1,2,3 are Stator - 4 is +ve, 6 is -ve I believe



          Dan
          1980 GS1000G - Sold
          1978 GS1000E - Finished!
          1980 GS550E - Fixed & given to a friend
          1983 GS750ES Special - Sold
          2009 KLR 650 - Sold - gone to TX!
          1982 GS1100G - Rebuilt and finished. - Sold
          2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

          www.parasiticsanalytics.com

          TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

          Comment


            Anything I can find on the web just tells me not to worry about that middle pin... just leave it disconnected. Still be interested to know what it's for though... must be for something!
            1980 GS1000G - Sold
            1978 GS1000E - Finished!
            1980 GS550E - Fixed & given to a friend
            1983 GS750ES Special - Sold
            2009 KLR 650 - Sold - gone to TX!
            1982 GS1100G - Rebuilt and finished. - Sold
            2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

            www.parasiticsanalytics.com

            TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

            Comment


              Dan,
              I suspect its similar to the FH009-1 where that pin is a sense wire.

              The beauty of the FET type sense wire is that if it is left disconnected it actually lowers the charging output instead of letting it run at full output as the SCR type does. This is a clever safety feature.

              Comment


                Does that mean that this RR will never output it's full potential?

                If so I should probably connect it up or tell the guy to send it back & get one of the 5 pin ones...

                It's important because the guy is upgrading to an FET mainly to try to gain extra capacity for his electronic vest..... (He also wants me to put an HID headlight in it too as they only drain 30w & he figures that will give him most of the extra output he needs for his vest).

                Dan
                1980 GS1000G - Sold
                1978 GS1000E - Finished!
                1980 GS550E - Fixed & given to a friend
                1983 GS750ES Special - Sold
                2009 KLR 650 - Sold - gone to TX!
                1982 GS1100G - Rebuilt and finished. - Sold
                2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                www.parasiticsanalytics.com

                TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                Comment


                  Dan,
                  No, it should work properly and regulate whatever the alternator sends to it. It just needs a sense wire connection to do that.

                  Not connecting the sense wire will activate that feature, which safeguards the battery from overcharging as I understand it.

                  You can happily install it, just hook up the sense wire as well.

                  Comment


                    He has bought the Eastern Beaver connectors & only has 5 connectors for them.... I think I'll try it against a FH010 that I have myself to see what it does on the same bike. If the output is the same I'll just leave well alone, if not I'll tell him to swap it over.

                    By the way - Can these Mosfet regulators better handle less than stock load?

                    For example if I eliminate the switching off one leg feature on my bike but at some stage forget to turn the light on will the FET cope better or is it still a big problem?

                    Dan
                    1980 GS1000G - Sold
                    1978 GS1000E - Finished!
                    1980 GS550E - Fixed & given to a friend
                    1983 GS750ES Special - Sold
                    2009 KLR 650 - Sold - gone to TX!
                    1982 GS1100G - Rebuilt and finished. - Sold
                    2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                    www.parasiticsanalytics.com

                    TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                    Comment


                      Originally posted by salty_monk View Post
                      By the way - Can these Mosfet regulators better handle less than stock load?

                      For example if I eliminate the switching off one leg feature on my bike but at some stage forget to turn the light on will the FET cope better or is it still a big problem?
                      Dan,
                      The main improvement on the new FET types is the higher current ratings. When talking about the FET types we are looking at the lowest at 35A and the highest at 50A, compared to the SCR type which was 35A highest current rating and I suspect that the GS OEM one was maybe 20A and then helped some by switching out a phase with the lights off.

                      I think you should be able to use that 35A FET one with the lights off as well. Theoretically the 50A type should be virtually indestructable when used on our bikes.

                      By the way we have light switches on our bikes here and cannot imagine having a bike without one and we also ride with lights on.

                      Comment


                        Thanks! So spare load will be "eat up" by the RR & not affect the stator. That's the answer I was looking for.

                        I have a 50A one to go on my bike, the 35A FH001 is one a friend picked up & is going to use on his bike.
                        1980 GS1000G - Sold
                        1978 GS1000E - Finished!
                        1980 GS550E - Fixed & given to a friend
                        1983 GS750ES Special - Sold
                        2009 KLR 650 - Sold - gone to TX!
                        1982 GS1100G - Rebuilt and finished. - Sold
                        2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                        www.parasiticsanalytics.com

                        TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                        Comment


                          Originally posted by Matchless View Post
                          Dan,
                          The main improvement on the new FET types is the higher current ratings. When talking about the FET types we are looking at the lowest at 35A and the highest at 50A, compared to the SCR type which was 35A highest current rating and I suspect that the GS OEM one was maybe 20A and then helped some by switching out a phase with the lights off.

                          I think you should be able to use that 35A FET one with the lights off as well. Theoretically the 50A type should be virtually indestructable when used on our bikes.

                          By the way we have light switches on our bikes here and cannot imagine having a bike without one and we also ride with lights on.
                          Matchless,
                          The FET is indistructable because the on resistance and therefore the voltage drop/power across the FET's is very low. Instead it is all shipped back to the stator which gets hotter with a FET based unit (same total power but less drop across the FET R/R.
                          Jim

                          Comment


                            Originally posted by posplayr View Post
                            Matchless,
                            The FET is indistructable because the on resistance and therefore the voltage drop/power across the FET's is very low. Instead it is all shipped back to the stator which gets hotter with a FET based unit (same total power but less drop across the FET R/R.
                            Jim
                            I've been struggling to understand how this works. The stator is basically part of a permanent magnet AC generator right? How can power be sent back to this unit? I thought current flow in one direction only?
                            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


                              Originally posted by Nessism View Post
                              I've been struggling to understand how this works. The stator is basically part of a permanent magnet AC generator right? How can power be sent back to this unit? I thought current flow in one direction only?

                              We covered that here. Just imagine what would happen if you shorted a pair of the windings (at the point they would have gone to the R/R) to each other and drove your bike around at 6000 RPM? How long would the stator last?

                              Comment


                                Originally posted by posplayr View Post
                                We covered that here. Just imagine what would happen if you shorted a pair of the windings (at the point they would have gone to the R/R) to each other and drove your bike around at 6000 RPM? How long would the stator last?

                                http://www.thegsresources.com/_forum...d.php?t=157589
                                The stator is not included in your flow diagram.
                                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

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