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DT125R FORUM

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  4. electrics, electrics, electrics grrrrrrrr

electrics, electrics, electrics grrrrrrrr

Scheduled Pinned Locked Moved DTR
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  • S sward

    Thanks for the replies, just to be clear, it doesn't matter whether I have the side stand open or closed or kill switch open or closed or both open or both closed, with ignition on or off I always get a spark unless I connect the battery up, as soon as battery is connected the spark stops (with ignition on) with battery connected and ignition off I get a spark :-(, by the way I have checked and double checked the ignition switching and its working correctly (I am 100 5 certain, off disconnects all wires).

    NINJAN Offline
    NINJAN Offline
    NINJA
    wrote on last edited by
    #6

    @sward That doesn't make sense to me, are you saying that with no battery connected you get a spark, but when the battery is connected you get no spark? How would your electrics work with nothing to power them? If that's the case then you have a short somewhere and most likely its somewhere along the battery cables.

    SEDUCED BY THE DARK SIDE!!!

    CalumC 1 Reply Last reply
    0
    • NINJAN NINJA

      @sward That doesn't make sense to me, are you saying that with no battery connected you get a spark, but when the battery is connected you get no spark? How would your electrics work with nothing to power them? If that's the case then you have a short somewhere and most likely its somewhere along the battery cables.

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #7

      @NINJA Unlike an alternator, the DT uses a generator. Meaning, you don't need power to make power.

      Either way, I know the behaviour of the bike is different when the battery is low. But I've not gone experienced too much myself.

      Always Originate, Never Pirate!

      NINJAN declanD 2 Replies Last reply
      1
      • CalumC Calum

        @NINJA Unlike an alternator, the DT uses a generator. Meaning, you don't need power to make power.

        Either way, I know the behaviour of the bike is different when the battery is low. But I've not gone experienced too much myself.

        NINJAN Offline
        NINJAN Offline
        NINJA
        wrote on last edited by
        #8

        @Calum AAAHHH Well that explains it then - thank you. :thumbs_up_light_skin_tone:

        SEDUCED BY THE DARK SIDE!!!

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        • CalumC Calum

          @NINJA Unlike an alternator, the DT uses a generator. Meaning, you don't need power to make power.

          Either way, I know the behaviour of the bike is different when the battery is low. But I've not gone experienced too much myself.

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #9

          @Calum the bike will spark just fine with a dead battery you will have no power valve though

          CalumC 1 Reply Last reply
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          • declanD declan

            @Calum the bike will spark just fine with a dead battery you will have no power valve though

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #10

            @declan That's not true, the bike may not fire properly. As is the case with my DTR.

            The generator simply does not make enough power to power the lights, fire the ignition and operate the servo.

            Always Originate, Never Pirate!

            declanD 1 Reply Last reply
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            • CalumC Calum

              @declan That's not true, the bike may not fire properly. As is the case with my DTR.

              The generator simply does not make enough power to power the lights, fire the ignition and operate the servo.

              declanD Offline
              declanD Offline
              declan
              wrote on last edited by
              #11

              @Calum may not fire properly but it will always start and run

              CalumC 1 Reply Last reply
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              • declanD declan

                @Calum may not fire properly but it will always start and run

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #12

                @declan Well, never say always. If there is a heavy enough load on the electrical system then it may struggle to fire. But yes, my bike runs, just really poorly above 5k RPM

                Always Originate, Never Pirate!

                D declanD 2 Replies Last reply
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                • CalumC Calum

                  @declan Well, never say always. If there is a heavy enough load on the electrical system then it may struggle to fire. But yes, my bike runs, just really poorly above 5k RPM

                  D Offline
                  D Offline
                  DTR+NSR
                  wrote on last edited by
                  #13

                  There is two parts to the generator on a dt and most bikes. There is charging coils that produce Ac current that the regulator/rectifier converts to 12v dc, to charge the battery. The 2nd is ignition coils which are used to produce a spark at the coil. Most bikes will run fine with out a battery, but with out the battery there to 'buffer' the voltage from the reg/rec you run the risk of voltage spikes so not recommended.
                  I presume the ignition switch interrupts the main power feed ( red and brown wires) and a feed to the ignition system, through the other two wires. I would see if the bike sparks with these other two wires (blue I think) disconnected at the ignition switch, but with the ignition on.

                  1 Reply Last reply
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                  • CalumC Calum

                    @declan Well, never say always. If there is a heavy enough load on the electrical system then it may struggle to fire. But yes, my bike runs, just really poorly above 5k RPM

                    declanD Offline
                    declanD Offline
                    declan
                    wrote on last edited by
                    #14

                    @Calum yeah that’s about right

                    1 Reply Last reply
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                    • S Offline
                      S Offline
                      sward
                      wrote on last edited by
                      #15

                      I tracked down the issue to a broken wire in the loom, so all fixed and great to hear the bike running, I'm not going to identify the individual wire that was causing this as if people know they could just cut one wire and steal the bike, though in addition as many people talked about bad earths I also made sure they were all spot too, could have been a combination of two things. lol.

                      Thanks for all the suggestions and help,

                      Simon

                      NINJAN 1 Reply Last reply
                      1
                      • S sward

                        I tracked down the issue to a broken wire in the loom, so all fixed and great to hear the bike running, I'm not going to identify the individual wire that was causing this as if people know they could just cut one wire and steal the bike, though in addition as many people talked about bad earths I also made sure they were all spot too, could have been a combination of two things. lol.

                        Thanks for all the suggestions and help,

                        Simon

                        NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by
                        #16

                        @sward Glad your now sorted, post some pics or a vid of the bike running dude!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                        SEDUCED BY THE DARK SIDE!!!

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